This document discusses cardiovascular involvement in various collagen vascular disorders, including systemic lupus erythematosus (SLE). It notes that up to 70% of SLE patients show cardiovascular involvement upon autopsy or echocardiography. Common manifestations include pericardial disease, valvular disease, coronary artery disease, and myocardial disease. Pericarditis is the most common cardiovascular manifestation in SLE, occurring in 22-54% of patients. Valvular abnormalities like thickening and regurgitation are also common. The document further discusses cardiovascular involvement in other disorders like antiphospholipid antibody syndrome, systemic sclerosis, and drug-induced lupus.
most of the glomerular diseases , either primary or secondary..touching all the aspects including light microscopy, electron microscopy and immunoflourescence.
most of the glomerular diseases , either primary or secondary..touching all the aspects including light microscopy, electron microscopy and immunoflourescence.
Collagen is most abundant protein in mammals, the main fibrous component of skin, bone, tendon and cartilage.
Collagen comprises one- third of the total protein, accounts for three-quarters of the dry weight of skin, and is the most prevalent component of the extracellular matrix.
The collagen family consists of 28 members and these are classified by Roman numbers on the basis of their chronology of discovery.
Systemic lupus erythematosus (SLE) is an autoimmune disease. In this disease, the immune system of the body mistakenly attacks healthy tissue. It can affect the skin, joints, kidneys, brain, and other organs.
Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
Prix Galien International 2024 Forum ProgramLevi Shapiro
June 20, 2024, Prix Galien International and Jerusalem Ethics Forum in ROME. Detailed agenda including panels:
- ADVANCES IN CARDIOLOGY: A NEW PARADIGM IS COMING
- WOMEN’S HEALTH: FERTILITY PRESERVATION
- WHAT’S NEW IN THE TREATMENT OF INFECTIOUS,
ONCOLOGICAL AND INFLAMMATORY SKIN DISEASES?
- ARTIFICIAL INTELLIGENCE AND ETHICS
- GENE THERAPY
- BEYOND BORDERS: GLOBAL INITIATIVES FOR DEMOCRATIZING LIFE SCIENCE TECHNOLOGIES AND PROMOTING ACCESS TO HEALTHCARE
- ETHICAL CHALLENGES IN LIFE SCIENCES
- Prix Galien International Awards Ceremony
New Drug Discovery and Development .....NEHA GUPTA
The "New Drug Discovery and Development" process involves the identification, design, testing, and manufacturing of novel pharmaceutical compounds with the aim of introducing new and improved treatments for various medical conditions. This comprehensive endeavor encompasses various stages, including target identification, preclinical studies, clinical trials, regulatory approval, and post-market surveillance. It involves multidisciplinary collaboration among scientists, researchers, clinicians, regulatory experts, and pharmaceutical companies to bring innovative therapies to market and address unmet medical needs.
These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
Knee anatomy and clinical tests 2024.pdfvimalpl1234
This includes all relevant anatomy and clinical tests compiled from standard textbooks, Campbell,netter etc..It is comprehensive and best suited for orthopaedicians and orthopaedic residents.
Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
4. SYSTEMIC LUPUS ERYTHEMATOSUS
autoimmune multisystem disease.
prevalence 1 in 2,000.
female to male 9 to 1;
peak age 15-40 years.
immune complex
deposition, autoantibodies, and ANAs.
photosensitive skin
eruptions, serositis, renal, hematological,
CNS and CV involvement.
5. CARDIOVASCULAR INVOLVEMENT
noted in up to 70% of patients by autopsy as well as
by echocardiography.
• Pericardial disease
• Valvular disease
• Coronary artery diseases.
• Myocardial disease.
• Conduction System Disease and arrhythmias.
6. PERICARDIAL INVOLVEMENT
The most common cardiovascular manifestation of
SLE.
Meta-analysis of 26 studies (Mayo Clin Proc 1999;74:255)
Prevalence by Echo : 22 – 54% (Control; 0 – 10%)
may be detected at any point in the disease.
are usually asymptomatic.
7. PERICARDIAL INVOLVEMENT
may occur as the initial manifestation.
Can occur as a complication of chronic renal
disease.
Acute pericarditis → 20% - 30% of pts.
Rarely, may be associated with cardiac tamponade.
8. PERICARDIAL INVOLVEMENT
chronic pericarditis may occasionally lead to
constriction.
It is important to differentiate lupus pericarditis
from infectious causes in the setting of
concomitant immunosuppressive therapy.
Pericardial fluid
neutrophil predominance,
elevated protein level, and
low or normal glucose concentration.
Low complement level ( non-specific).
9. PERICARDIAL INVOLVEMENT
Treatment:
depends on its severity.
symptomatic, acute pericarditis:
NSAIDs or corticosteroids.
Acute lupus pericarditis of moderate severity
or worse
prednisone - 40 to 60 mg daily f/b a subsequent
taper
10. VALVULAR DISEASE ASSOCIATED
WITH SLE
Valve masses or Libman-Sacks
vegetation.
Leaflet thickening-
most common echo finding.
Valvular regurgitation.
Valvular stenosis.
11. LIBMAN-SACKS VEGETATION
Found in >50% of patients by TEE.
generally localize on the
atrial side of the MV.
arterial side of the AoV.
are usually nonmobile.
o < 1 cm2 in size
o Irregular borders
o Heterogenous echo density
o Associated with thickening or regurgitation and less commonly
with stenosis.
12. ABNORMAL LEAFLET THICKENING IN SLE
Mitral and aortic valves.
Generally diffuse but predominant on the mid and tip
portions.
Commonly associated with valve regurgitation or valve
masses or both.
Valve stenosis is rare (<3%).
Leaflet calcification is uncommon.
Involvement of the annular and subvalvular apparatus is
rare (1%).
13. VALVULAR REGURGITATION IN SLE
Moderate-to-severe regurgitation in 7% to
41%.
MV>TV>AV>PV.
Moderate or severe regurgitation is almost
always accompanied by leaflet thickening.
14. THERAPY OF VALVULAR DISEASE IN SLE
Prosthetic valve replacement or valve repair.
a/w higher morbidity and mortality.
Steroid or cytotoxic therapy has no effect on the
presence or the evolution.
Antiplatelet therapy
15. CORONARY ARTERY DISEASES
Coronary arteritis→ischemic syndromes,
occurs rarely.
Additional causes of ACS in SLE:
thrombosis, often related to the presence of APLAs and,
very rarely, embolism from nonbacterial vegetative
endocarditis (Libman-Sacks).
Treatment:
coronary arteritis →high-dose corticosteroids ±
cyclophosphamide or azathioprine.
thrombotic disease related to APLAs →long-term
anticoagulation.
16. CORONARY ARTERY DISEASES
Recent data suggest that subclinical
atherosclerosis is highly prevalent amongst SLE
patients.
Women with SLE between 35-44 years of age are
50 times more likely to have a MI than controls.
pro-inflammatory forms of HDL (piHDL) →increased
risk for atherosclerosis.
17. MYOCARDIAL DISEASE IN SLE
Multifactorial.
result from
immunologic injury,
CAD,
valvular disease, or
coexistent problems such as HTN.
Acute myocarditis
is infrequent,
but can be the initial presentation.
should be suspected in presence of new-onset arrhythmia, fever,
dyspnea, and chest pain.
Patients with peripheral skeletal myositis →increased risk for
myocarditis.
18. MYOCARDIAL DISEASE
Noninvasive studies:
abnormal systolic and diastolic function →often reverse with
control of disease activity.
Endomyocardial biopsy: Nonspecific→
patches of myocardial fibrosis.
sparse interstitial mononuclear cell infiltrates, and
occasional myocyte necrosis with immune complex deposition.
Treatment:
Unexplained acute LVF→
trial of corticosteroid therapy ± cyclophosphamide or azathioprine.
Hydroxychloroquine-induced cardiomyopathy should be
considered in patients on this drug.
19. CONDUCTION SYSTEM DISEASE AND
NEONATAL LUPUS
Not expected in adults with SLE.
But seen in infants born to mothers with SLE.
pathogenic mechanism :
transmission of maternal anti-Ro and anti-La ab in
utero→myocardial inflammation and fibrosis of the
conduction system.
˂5% of women with these antibodies will give birth to
infants with congenital heart block.
20. CONDUCTION SYSTEM DISEASE AND
NEONATAL LUPUS
Screening for antibodies prior to pregnancy is
recommended.
If present → serial USG of the fetus to detect fetal
conduction abnormality or hydrops.
AV block:
usually appears early in pregnancy
almost always irreversible.
If recognized early→
dexamethasone or
plasma exchange may reverse fetal myocarditis in utero.
Data to support this intervention are limited.
21. ARRHYTHMIA IN SLE
Sinus tachycardia may be the earliest manifestation of
myocarditis.
Atrial fibrillation and flutter may be associated with
Pericarditis.
Abnormal heart rate variability may be caused by
autonomic dysfunction or occult myocarditis.
Unexplained sinus tachycardia →
in active SLE, even when evidence of cardiac dysfunction is
absent .
resolves with treatment of SLE.
Occult pulmonary embolism should be considered as a cause
of tachycardia, especially in the presence of APLAs.
22. DRUG-INDUCED LUPUS
Rare complication of certain medications
procainamide,
quinidine, and
hydralazine.
Other medications:isoniazid, minocycline,
clindamycin, and phenytoin.
Affects males and females equally.
a/w anti-histone antibodies.
23. DRUG-INDUCED LUPUS
Common signs and symptoms:
pericarditis,
pleuritis,
arthralgia, and
fever.
Rarely cause renal or neurologic complications.
usually resolve
on its own
after a short course of prednisone and
discontinuation of the offending medication.
25. ANTI PHOSPHOLIPID ANTIBODY SYNDROME
primary or secondary.
characterized by the clinical triad of :
recurrent arterial or venous thrombosis,
pregnancy loss, and
thrombocytopenia.
Serologically
anticardiolipin antibodies,
anti-β 2 glycoprotein antibodies, or
a positive lupus anticoagulant.
hemolytic anemia, and livedo reticularis are commonly present.
In a study by Soltész and colleagues,
Lupus anticoagulant →venous thrombosis,
anticardiolipin antibodies →carotid, peripheral, and coronary artery disease.
26. ANTIPHOSPHOLIPID ANTIBODY SYNDROME
10% to 30% of SLE pts have APLAs,
although not all these patients will exhibit the clinical
syndrome.
Valvular disease →most common CV manifestation
(30% of patients):
leaflet thickening,
thrombotic masses extending from the valve ring or
leaflets, or
vegetations.
mitral valve > aortic valve
regurgitation >> stenosis .
The first manifestation may be a thromboembolic event
(stroke).
27. ANTIPHOSPHOLIPID ANTIBODY SYNDROME
Primary APLAS is not a/w pericarditis, myocarditis,
or conduction disease.
Other CV features:
thrombotic CAD,
intracardiac thrombi, and
nonbacterial endocarditis.
Pulmonary hypertension:
secondary to chronic thromboembolic disease, or
pulmonary arteriolar intimal proliferation.
28. ANTIPHOSPHOLIPID ANTIBODY SYNDROME
Differential Diagnosis:
SLE,
TTP,
ITP,
occult neoplasia.
Treatment:
clinically significant valvular or intracardiac thrombotic masses :
high-dose anticoagulation with heparin and then
chronic warfarin ± aspirin.
Vegetations may resolve
with anticoagulation therapy over several months, or
spontaneously.
↑ MI and reocclusion following coronary intervention or
bypass grafting → Perioperative aggressive prophylactic
anticoagulation.
30. SYSTEMIC SCLEROSIS
characterized by:
microvascular occlusive disease, and
excessive fibrotic changes that affects skin and multiple
organ systems.
Epidemiology :
rare disease.
Age of onset → 45 - 65 years of age.
Children are infrequently affected.
Among younger individuals, there is a female bias
(approx. 7 : 1 vs 3 : 1 for entire scleroderma cohorts).
31. CLINICAL FEATURES OF SYSTEMIC SCLEROSIS
Raynaud phenomenon:
in > 90% of patients,
usually precedes skin hardening .
arthralgias (>90%),
esophageal dysmotility (>80%),
Telangiectasias:
90% with CREST,
approx. 60% with generalized disease.
32. CLINICAL FEATURES OF SYSTEMIC SCLEROSIS
pulmonary fibrosis:
35% of CREST,
70% generalized.
Renal crisis:
20-fold more common in generalized disease than
in CREST (20% versus 1%).
Calcinosis :
may occur in both subtypes, but
twice as common in the CREST variant (40%
versus 20%).
33. CARDIOVASCULAR INVOLVEMENT IN SYSTEMIC
SCLEROSIS
Pericardial involvement:
common in PSS:
fibrinous pericarditis →70% of pts at autopsy.
symptomatic pericarditis:
approx. 16% in diffused.
approx. 30% in limited scleroderma.
Echocardiography:
small pericardial effusions(<40%).
Acute pericarditis syndrome:
large effusions.
may require corticosteroid therapy.
(BUT corticosteroids→ scleroderma renal crisis ).
34. CARDIOVASCULAR INVOLVEMENT IN SYSTEMIC
SCLEROSIS
Myocardial Disease:
LV diastolic dysfunction is a frequent manifestation.
but it is rarely severe.
when severe, diastolic dysfunction may worsen PAH.
Epicardial coronary arteries:
generally angiographically normal.
Fixed perfusion defects on nuclear imaging in
80% of PSS and
65% of CREST patients.
MIs can occur with angiographically normal coronary
arteries.
35. CARDIOVASCULAR INVOLVEMENT IN SYSTEMIC
SCLEROSIS
Arrhythmias:
The most frequent →PVCs (> 60% )
Transient AF, atrial flutter, and PSVT →20 - 30% of patients.
NSVT in 7% to 13%,
conduction abnormalities:
Ventricular conduction abnormalities (bundle and fascicular
blocks) are common .
can be found throughout the conduction system.
sudden death:
in Patients with a history of palpitations or syncope.
risk ↑ in patients with coexistent skeletal myositis.
Primary valvular disease is not common.
36. CARDIOVASCULAR INVOLVEMENT IN SYSTEMIC
SCLEROSIS
Renal crisis→extreme hypertension:
rapidly rising creatinine level,
microangiopathy,
thrombocytopenia, and
left ventricular failure.
Treatment is with ACE inhibitors, and other antiHT,—not
with corticosteroids.
37. CARDIOVASCULAR INVOLVEMENT IN SYSTEMIC
SCLEROSIS
o PAH:
• Primary pulmonary arteriopathy → commonly in limited
cutaneous form.
• clinically apparent disease in ˂ 10% ,
• although at autopsy, histopathologic changes of PAH→
65% -80% of patients.
• In comparison to idiopathic PAH:
• worse prognosis. (untreated 2-year survival rate as low as
40%).
• less favorable outcome with therapy.
• Lung /heart lung transplantation is controversial.
• Gastrointestinal dysmotility and associated gastroesophageal
reflux →aspiration →chronic allograft rejection.
39. POLYMYOSITIS AND DERMATOMYOSITIS
Weakness of prox. >distal skeletal muscles.
The CK level is usually ↑.
Respiratory muscles can be clinically involved.
Both conditions can be associated with
fever,
interstitial lung disease, and sometimes
myalgias.
40. POLYMYOSITIS AND DERMATOMYOSITIS
Dermatomyositis has characteristic skin lesions:
extensor surface and extensor tendon erythema;
Gottron papules overlying the knuckles, elbows, and
knees;
edema of the eyelids; and
photosensitive diffuse papular eruption with scaling.
Dermatomyositis → paraneoplastic syndrome (>40
yrs of age).
41. POLYMYOSITIS AND DERMATOMYOSITIS
Epidemiology
incidence → 2-10 new cases/1,000,000 population
annually.
People of all races and ethnicities.
female dominance; F:M=2.5 : 1.
Pathogenesis
cause unknown.
Involved muscles are infiltrated with lymphocytes, and
the lymphocyte subsets.
42. CARDIAC INVOLVEMENT
Pericarditis:
in overlap syndrome.
Cardiomyopathy:
Localized or generalized myocardial dysfunction.
but infrequently causes clinical heart failure.
steroid-responsive.
Corticosteroid myopathy, can mimic PM.
although with a normal CK level,
generally affects skeletal but not respiratory or cardiac muscle.
43. CARDIAC INVOLVEMENT
conduction system disorders:
conduction block, which can occur in the absence of
cardiomyopathy.
Mitral valve prolapse → in up to 50% cases.
Pulmonary hypertension →related to interstitial
lung disease.
Acute alveolitis can at times mimic acute heart
failure.
45. SERONEGATIVE SPONDYLOARTHROPATHIES
group of multisystem inflammatory diseases
sharing common features:
spinal or sacroiliac involvement,
enthesitis
absence of serum rheumatoid factor,
and a high incidence of HLA-B27.
Includes:
ankylosing spondylitis,
reactive arthritis,
psoriatic arthritis, and
IBD–associated arthritis.
46. SERONEGATIVE SPONDYLOARTHROPATHIES
Among the group of spondyloarthropathies,
ankylosing spondylitis and
reactive arthritis
-are the most frequently associated with cardiovascular
manifestations.
The two most prevalent cardiovascular
manifestations:
conduction system disease and
aortitis, with or without aortic insufficiency.
47. CONDUCTION SYSTEM DISEASE IN
SERONEGATIVE SPONDYLOARTHROPATHIES
presents mainly as heart block,
occurs more commonly in males that are HLA-B27
positive;
often requires permanent pacemaker implantation.
Electrophysiologic studies reveal the block to be at
the level of the AV node; it is usually not fascicular.
48. AORTIC ROOT DISEASE AND VALVE DISEASE
IN SERONEGATIVE SPONDYLOARTHROPATHIES
Associated with HLA-B27 in patients with ankylosing spondylitis and
reactive arthritis.
• Pathology:
Inflammation predominantly of the adventitia and intima of the
aortic root →
fibroblastic reparative response and
vascularized fibrous tissue thickening.
• Aortic valvulitis:
Cusp thickening and retraction.
Thickening of the aorto-mitral junction or subaortic bump.
Proximal aortitis leading to aortic root thickening and dilation.
Aortic and mitral regurgitation.
49. AORTIC ROOT DISEASE AND VALVE DISEASE
IN SERONEGATIVE SPONDYLOARTHROPATHIES
• Prevalence
Autopsy studies; 24 to 100%
Echo studies
TTE → 8 - 31%
TEE → 82%
• Echo findings
Nonspecific thickening of aortic and mitral
valves
Increased echogenicity of the posterior aortic
wall and membraneous interventricular septum
Mild-to-moderate AR.
50. SERONEGATIVE SPONDYLOARTHROPATHIES
Less common cardiac manifestations:
clinically insignificant diastolic dysfunction,
SVTs, esp. AF,
myocarditis, and
pericarditis.
Treatment:
limited to NSAIDs and physical therapy.
TNF inhibitors:
unknown effect on cardiovascular manifestations.
Surgery:
for managing severe aortic regurgitation.
52. RHEUMATOID ARTHRITIS
Most common of the systemic autoimmune diseases (with a
worldwide prevalence of 0.5% to 1%).
female-predominant disease.
characterized by:
chronic symmetrical polyarthritis.
Approx. 3/4th of patients are positive for serum rheumatoid
factor or anti-CCP.
Pathogenesis:
chronic inflammatory infiltrate in the synovial tissues.
↑ production of proinflammatory mediators: TNF, IL-1, and IL-6,
as well as many chemokines.
53. CARDIOVASCULAR MANIFESTATIONS OF
RHEUMATOID ARTHRITIS
Pericarditis:
Autopsy studies→ 54% of cases.
Acute, symptomatic pericarditis→ ˂10%of patients with severe
RA.
Pericardial effusion→
90% of acute pericarditis cases by echo.
significant pericardial effusion: < 3%.ericardial effusion; < 3%
Aspiration of the pericardial fluid reveals:
↑ WBC count with neutrophilic predominance, ↑protein, and ↑ LDH;
↓ glucose levels;
presence of rheumatoid factor (but doesn't confirm the ‘Δ’),
low complement;
Aspiration not usually required for diagnosis in the appropriate
clinical setting.
54. VALVULAR HEART DISEASE ASSOCIATED
WITH RHEUMATOID ARTHRITIS
Constrictive pericarditis:
rare
higher mortality rates.
requires an urgent intervention.
must be distinguished from restrictive
cardiomyopathy→secondary amyloidosis in patients with long-
standing RA.
Clinically significant valvular disease is relatively uncommon.
Valvular diseases:
Valvular thickening
Valvular regurgitation (commonly MR).
Valvular granulomas
55. Unique to RA
Small (<0.5 cm2)
Oval in shape
Well-defined border
Homogenous reflectance
Not calcified
Usually single
VALVULAR NODULES ASSOCIATED WITH
RHEUMATOID ARTHRITIS
(Cardiol Clin
1998;16;531) (Cardiol Clin
56. VALVULAR HEART DISEASE ASSOCIATED
WITH RHEUMATOID ARTHRITIS
A higher prevalence of valvular disease in pts with:
erosive polyarticular and nodular disease,
systemic vasculitis, and
high titers of RA factor.
Therapy
A few cases of significant improvement of severe
valvulitis with the use of steroids or cytotoxic therapy.
Mitral and aortic valve replacement in severe
regurgitation.
57. CARDIOMYOPATHY IN RHEUMATOID ARTHRITIS
characterized by focal granulomatous inflammation of the
myocardium.
Granulomas may involve the conduction system → 1°, 2°, or 3°
heart block→ usually persists despite immunosuppressive Rx.
3–30% of RA patients in postmortem studies.
Some cases associated with drugs used in RA.
Rarely, may result from secondary amyloidosis.
cMRI may be used to differentiate the different causes of
cardiomyopathy.
58. ARRHYTHMIAS IN RHEUMATOID ARTHRITIS
important cause of mortality in RA.
may be secondary to:
ischaemia,
conduction abnormalities due to rheumatoid nodules,
amyloidosis or
congestive heart failure.
RA patients may have an ↑ sympathetic activity→ ventricular
tachy-arrhythmias.
QT-dispersion and corrected QT-dispersion intervals:
significantly longer in RA compared with healthy controls,
related to disease duration.
59. ACCELERATED CORONARY ARTERY
ATHEROSCLEROSIS AND CHF IN RA.
Strong link between RA and accelerated
atherosclerosis, highlighting it as an important risk
factor for cardiovascular disease.
40% of deaths in RA →cardiovascular disease.
prevalence of cardiovascular disease was
comparable to that of pts with diabetes.
60. ACCELERATED CORONARY ARTERY
ATHEROSCLEROSIS IN RA.
Atherosclerosis is an inflammatory process driven by many of the same
mediators that are associated with rheumatoid inflammation.
61. ACCELERATED CORONARY ARTERY
ATHEROSCLEROSIS AND CHF IN RA.
Additionally, RA appears to be an independent risk
factor for multivessel CAD,
Nurses Health Study, women with RA have a two-fold
higher rate of myocardial infarctions compared with
controls.
RA patients are less likely to be symptomatic from
IHD as non-RA controls
twice as likely to have sudden death and unrecognized
myocardial infarction.
62. CHF IN RHEUMATOID ARTHRITIS.
Congestive heart failure →excess cardiovascular mortality in
RA.
LV systolic dysfunction was 3 times more common in RA
patients compared with the gen. population.
Both RV and LV diastolic dysfunction has been documented.
Mechanisms →unclear.
Less likely to have
a history of ischemic heart disease,
obesity,
or hypertension,
yet they have significantly increased mortality.
63. MANAGEMENT AND PREVENTION OF
CARDIOVASCULAR DISEASE IN RA
There is currently a lack of evidence-based guidelines.
Primary goal is tight control of joint inflammation by
using conventional disease modifying antirheumatic
agents.
TNF inhibitors are generally avoided in RA patients with
a history of heart failure.
studies show ↑ morbidity and mortality in non-RA patients
with CHF.
Traditional CV risk factors should be aggressively
managed.
SLE is an autoantibody and immune complex disorder, with immunoglobulin and complement deposition in involved organs, including the heart. The serologic findings may be detectable years before clinical disease manifests. However, the view of SLE as only an immune complex disorder is an oversimplification. Some animal models of SLE have been associated with retroviral infections, but there are no consistently demonstrable viral agents in humans with SLE. Studies of twins have suggested a role for genetic factors, and recent data support the involvement of IFN-α in SLE pathogenesis.
When effusions occur in the setting of chronic renal failure, it is difficult to distinguish uremic from SLE pericarditis. Pericarditis, as well as tamponade, can occur with drug-induced lupus.
Complications of valvularvegetations included cerebral and coronary artery thromboembolism,although the absolute risk is very low
Valvulitis (Fig. 89-7), with valve fenestrations and rapidly progressing dysfunction, can occur. The nonbacterial vegetations rarely embolize and cause stroke syndromes. Several studies have demonstrated an increased prevalence of cardiac valve dysfunction in the presence of APLA, with or without SLE.
The distinction between atherosclerotic CAD, which is far more common, and coronary arteritis has been inferred from sequential angiographic studies that show more rapid changes in luminal images with arteritis than those characteristic of CAD.
Young women with SLE may have several risk factors for coronary atherosclerosis, such as hypertension, which may be secondary to renal disease and diabetes brought about or worsened by corticosteroid exposure. Normal functioning HDL-C has several anti-atherogenic properties. HDL transports excesscholesterol from cells in artery walls to the liver for disposal (10,24), removes reactiveoxygen species from OxLDL, prevents OxLDL-mediated recruitment of inflammatorymediators and monocytes into the vessel wall (25), and inhibits endothelial cell expressionof adhesion molecules (26) and release of chemokines/cytokines (27). Several componentsof HDL contribute to these protective effects, including apoA-1 and the enzymeparaoxonase (28).Conversely, piHDL cannot prevent oxidation of LDL-C and actually increase it, leading toimpairment of reverse cholesterol transport, increased recruitment of monocytes, andprobably an enhanced inflammatory response (11,19). Multiple mechanisms confer proinflammatorycharacteristics on HDL molecules (29). In acute inflammation, hepaticsynthesis of the protective lipoproteins in HDL-C, including apoA-1 and antioxidantenzymes such as PON1, decrease (28). Additionally, protective components in the HDLparticles, such as apoA-1, are partly replaced with pro-oxidant acute phase reactants such asserum amyloid A and ceruloplasmin (29) (30). Furthermore, HDL-C and apoA-1 can bereadily oxidized during periods of inflammation by myeloperoxidase, a product of whiteblood cell activation (30); oxidation of HDL probably contributes to its dysfunction.Oxidized HDL has pro-inflammatory characteristics (29,30), and upregulates the expressionof pro-inflammatory genes such as cyclo-oxygenase-2 (31) and plasminogen activatorinhibitor-1 (32) in endothelial cells.
Measurement of troponin I may help in the assessment of cardiac involvement, but the MB fraction of creatine kinase (CK) may be significantly elevated in the presence of skeletal myositis, even in the absence of myocarditis.
Measurement of troponin I may help in the assessment of cardiac involvement, but the MB fraction of creatine kinase (CK) may be significantly elevated in the presence of skeletal myositis, even in the absence of myocarditis.
However, women with systemic autoimmune diseases known to be associated with this antibody should be screened for its presence prior to pregnancy.
However, women with systemic autoimmune diseases known to be associated with this antibody should be screened for its presence prior to pregnancy.
10% to 30% of SLE patients have APLAs.although not all these patients will exhibit the clinical syndrome. Low to moderate levels of APLA can also accompany a number of infectious and other autoimmune diseases, usually without clinical consequence. In the absence of an underlying systemic disease, APLAS is termed primary. The presence of APLA or a lupus anticoagulant, in the absence of sequelae, does not routinely warrant therapy.
10% to 30% of SLE patients have APLAs.although not all these patients will exhibit the clinical syndrome. Low to moderate levels of APLA can also accompany a number of infectious and other autoimmune diseases, usually without clinical consequence. In the absence of an underlying systemic disease, APLAS is termed primary. The presence of APLA or a lupus anticoagulant, in the absence of sequelae, does not routinely warrant therapy.Management of heparin dosing, in the setting of a lupus anticoagulant, which prolongs the baseline partial thromboplastin time (PTT), may require consultation with the coagulation laboratory[41] and use of special assays
10% to 30% of SLE patients have APLAs.although not all these patients will exhibit the clinical syndrome. Low to moderate levels of APLA can also accompany a number of infectious and other autoimmune diseases, usually without clinical consequence. In the absence of an underlying systemic disease, APLAS is termed primary. The presence of APLA or a lupus anticoagulant, in the absence of sequelae, does not routinely warrant therapy.Management of heparin dosing, in the setting of a lupus anticoagulant, which prolongs the baseline partial thromboplastin time (PTT), may require consultation with the coagulation laboratory[41] and use of special assays
SLE can involve the heart, as discussed earlier. TTP can cause myocardial ischemia, but not valvular disease; occult neoplasia is associated with nonbacterial thrombotic endocarditis.10% to 30% of SLE patients have APLAs.although not all these patients will exhibit the clinical syndrome. Low to moderate levels of APLA can also accompany a number of infectious and other autoimmune diseases, usually without clinical consequence. In the absence of an underlying systemic disease, APLAS is termed primary. The presence of APLA or a lupus anticoagulant, in the absence of sequelae, does not routinely warrant therapy.Management of heparin dosing, in the setting of a lupus anticoagulant, which prolongs the baseline partial thromboplastin time (PTT), may require consultation with the coagulation laboratory[41] and use of special assays
Pathogenesis cause - unknown. An increased frequency of autoimmune disorders and autoantibodies in relatives of patients ->genetic factors. environmental factors. Earliest lesions -> mononuclear infiltrates, primarily T lymphocytes, surrounding small arteries. Endothelial injury and vascular leak -> edema seen in the early stages. Immunocyte and endothelial cell activation yields release of cytokines (e.g., TGF-β, PDGF, IL-4) -> fibroblast production of types I and III collagen and glycosaminoglycans. Over 90% of patients are ANA-positive in both PSS and CREST variant.
Generalized PSS is distinguished by proximal cutaneous fibrosis.Thus, the term limited is not meant to indicate the absence of risk of visceral disease, but only refers to the distribution of skin involvement. The pattern of visceral involvement differs somewhat between CREST and PSS..
Generalized PSS is distinguished by proximal cutaneous fibrosis.Thus, the term limited is not meant to indicate the absence of risk of visceral disease, but only refers to the distribution of skin involvement. The pattern of visceral involvement differs somewhat between CREST and PSS..
In children, there is less sex bias (1 : 1), but when myositis coexists with other autoimmune diseases (e.g., SLE, scleroderma—overlap syndromes), the bias is enhanced (10 : 1 females). When myositis coexists with malignancy in the adult population (mean age, 60 years), it is not sex-biased. Inflammatory myositis can affect patients of all ages. Juvenile dermatomyositis has no association with malignancy, but may be associated with arteritis, which can cause bowel ischemia.Pathogenesis cause unknown. Involved muscles are infiltrated with lymphocytes, and the lymphocyte subsets and histopathologic pattern of inflammation differ between the two disorders. PM is characterized by endomysial mononuclear cell infiltration, although in dermatomyositis there is a greater amount of perivascular inflammation and perifascicular atrophy is seen. Autoantibodies are demonstrable, and certain antibody profiles may be associated with specific clinical patterns of presentation of PM and response to therapy; currently, however, these autoantibodies cannot be used to dictate therapeutic decisions.
enthesitis (inflammation at the sites where tendons and ligaments insert onto bones),Although most patients with ankylosing spondylitis will test positive for HLA-B27, it should be noted that the majority of patients with HLA-B27 do not have a spondyloarthropathy.
Treatment of the spondyloarthropathies was previously limited to nonsteroidal anti-inflammatories and physical therapy. More recent studies clearly demonstrate the clinical efficacy of TNF inhibitors for treating symptoms of spondylitis. It is unknown whether the TNF inhibitors will ameliorate cardiovascular manifestations of the spondyloarthropathies. Surgery has been successful for managing severe aortic regurgitation in this setting.
Pathogenesis: chronic inflammatory infiltrate (T cells, B cells, macrophages, fibroblasts, and mast cells) in the synovial tissues.↑ production of proinflammatory mediators: TNF, IL-1, and IL-6, as well as many chemokines-> stimulate proliferation of synovial fibroblasts, up-regulate expression of adhesion molecules on blood vessels, and promote angiogenesis.
RA patients with acute pericarditis are clinically indistinguishable from those with pericardial disease secondary to nonrheumatic conditions. Symptoms of positional chest pain or a pericardial friction rub may be elicited in up to 55% to 65% of patients.6,7 Although in this setting electrocardiograms are often normal, 5% to 10% of patients may manifest abnormalities classically associated with acute pericarditis. Imaging may be useful in confirming the diagnosis of pericarditis. In one series, echocardiography revealed a pericardial effusion in 90% of patients with this clinical diagnosis.6 Aspiration of the pericardial fluid, which is not usually required for diagnosis in the appropriate clinical setting, reveals an elevated white blood cell count, protein, and lactate dehydrogenase; decreased glucose levels; the presence of rheumatoid factor, and a low complement7; these features may help to differentiate it from other causes of pericarditis.
Furthermore, some drugs used in the treatment of RA have also been associated with cardiomyopathy, for instance, corticosteroids and anti-malarialscMRI showing delayed enhancement with gadolinium display a characteristic diffuse endocardialhyperenhancement pattern that may suggest cardiac amyloidosis.16
Systemic effects of inflammation in rheumatoid arthritis. The rheumatoid joint expresses high levels of various proinflammatory mediators, including tumor necrosis factor (TNF) , interleukin (IL) 1, and IL-6, that amplify the inflammatory response. T helper cells secrete interferon- (IFN-) and IL-17, which in turn activate the cellular constituents of the synovial tissue. These cytokines, which are also found in the vascular endothelium of the atherosclerotic blood vessel, serve to promote coronary artery disease and plaque rupture. Additionally, up-regulation of these cytokines influence other cardiovascular risk factors by affecting skeletal muscle, adipose tissue, and the liver, leading to insulin resistance, dyslipidemia, and increased levels of C-reactive protein (CRP), fibrinogen, and plasminogen activator inhibitor-1 (PAI-1), respectively.
There is currently a lack of evidence-based guidelines for the management and prevention of cardiovascular disease in RA patients. In treating RA, the primary goal is tight control of joint inflammation, which is done using conventional disease modifying antirheumatic agents (eg, methotrexate) as well as biologic therapy (eg, TNF inhibitors, tocilizumab, abatacept). TNF inhibitors are generally avoided in RA patients with a history of heart failure because of studies showing increased morbidity and mortality in non-RA patients with congestive heart failure who were treated with a TNF inhibitor.33 In general, traditional cardiovascular risk factors should be aggressively managed in patients with RA until further studies have evaluated the relative benefits and risks of this approach.33