This document discusses patient-prosthesis mismatch (PPM) after aortic valve replacement (AVR). PPM occurs when the effective orifice area (EOA) of the implanted prosthetic valve is too small relative to the patient's body size, leading to higher-than-expected gradients. PPM is associated with worse outcomes including reduced exercise capacity, less regression of left ventricular hypertrophy, and reduced long-term survival. The document outlines methods for assessing and differentiating PPM from valve stenosis using echocardiography parameters. It also discusses strategies for preventing PPM including proper valve sizing and the potential role of transcatheter valve-in-valve procedures for treating PPM in failed biopro
Cardiac catheteriztion, Oximetery study in a patient with VSDPRAVEEN GUPTA
In this ppt i am going to discuss how to do cardiac catheterisation study, oximetry study and how to analyse its data in a patient with VSD who came to our hospital
preop TEE assessment of atrial septal defect is very important for making decision for device closure, properly assessed adequate rims of ASD will reduce risk of device embolization to almost nil.
Cardiac catheteriztion, Oximetery study in a patient with VSDPRAVEEN GUPTA
In this ppt i am going to discuss how to do cardiac catheterisation study, oximetry study and how to analyse its data in a patient with VSD who came to our hospital
preop TEE assessment of atrial septal defect is very important for making decision for device closure, properly assessed adequate rims of ASD will reduce risk of device embolization to almost nil.
Speckle tracking echocardiography (STE) is an echocardiographic imaging technique that analyzes the motion of tissues in the heart by using the naturally occurring speckle pattern in the myocardium or blood when imaged by ultrasound.
In this ppt i am going to discuss various spotters, including ECG, X-ray, fluroscopy images and there answers. These spotter now days asked in various DM cardiology exam conducted all over India, so it will help you in your DM Cardiology exam preperationn.
ECHOCARDIOGRAPHIC EVALUATION OF MITRAL VALVE DISEASEPraveen Nagula
MITRAL VALVE ANATOMY , M MODE FINDINGS IN MITRAL STENOSIS,EVALUATION OF THE SEVERITY OF LESION,CALCIFIC MS,CCMA,CONGENITAL LESIONS,GUIDELINES ALL IN DETAIL....
Speckle tracking echocardiography (STE) is an echocardiographic imaging technique that analyzes the motion of tissues in the heart by using the naturally occurring speckle pattern in the myocardium or blood when imaged by ultrasound.
In this ppt i am going to discuss various spotters, including ECG, X-ray, fluroscopy images and there answers. These spotter now days asked in various DM cardiology exam conducted all over India, so it will help you in your DM Cardiology exam preperationn.
ECHOCARDIOGRAPHIC EVALUATION OF MITRAL VALVE DISEASEPraveen Nagula
MITRAL VALVE ANATOMY , M MODE FINDINGS IN MITRAL STENOSIS,EVALUATION OF THE SEVERITY OF LESION,CALCIFIC MS,CCMA,CONGENITAL LESIONS,GUIDELINES ALL IN DETAIL....
This presentation is all about patient prosthetic mismatch.what is PPM?.
Diameters of heart valve
Effective orifice area of different heart valves
How to avoid PPM
How to manage increased gradients across the heart valve
Which CTO should be treated by PCI or CABG & The specific problems of PCI for...Euro CTO Club
Which CTO should be treated by PCI or CABG & The specific problems of PCI for post CABG patients
Gerald S. Werner, Darmstadt, Germany
11th Experts Live CTO
The annual Euro CTO meeting
September 13th –14th, 2019 - Berlin, Germany
Evaluation of prosthetic valve function and clinical utility.Ramachandra Barik
Many of the prosthesis-related complications can be prevented or their impact minimized through optimal prosthesis selection in the individual patient and careful medical management and follow-up after implantation.
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Acute scrotum is a general term referring to an emergency condition affecting the contents or the wall of the scrotum.
There are a number of conditions that present acutely, predominantly with pain and/or swelling
A careful and detailed history and examination, and in some cases, investigations allow differentiation between these diagnoses. A prompt diagnosis is essential as the patient may require urgent surgical intervention
Testicular torsion refers to twisting of the spermatic cord, causing ischaemia of the testicle.
Testicular torsion results from inadequate fixation of the testis to the tunica vaginalis producing ischemia from reduced arterial inflow and venous outflow obstruction.
The prevalence of testicular torsion in adult patients hospitalized with acute scrotal pain is approximately 25 to 50 percent
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
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Couples presenting to the infertility clinic- Do they really have infertility...Sujoy Dasgupta
Dr Sujoy Dasgupta presented the study on "Couples presenting to the infertility clinic- Do they really have infertility? – The unexplored stories of non-consummation" in the 13th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2024) at Manila on 24 May, 2024.
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
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5th edition of the Diagnostic and Statistical Manual of Mental Disorders
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The four main behavioral effects of AUD are impaired control over
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Title: Sense of Smell
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 primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
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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
5. What is PPM?
• Literally, a mismatch between the patient and implanted prosthesis
• Remember, Gradient (or Velocity) = Flow (volume per unit time) ➗
Area (AVA)
• Flow, in any given haemodynamic environment, is proportional to
metabolic needs
• Hyperdynamic states (high flow): anaemia, fever, thyrotoxicosis, exercise
• Resting metabolic requirements: size of the patient (obesity paradox BMI >
30kg/m2)
• Hence Velocity/Gradient increases when (1) flow increases, or (2)
area decreases
6. Why is PPM so important?
• 2-20% of AVR patients may have severe PPM (defined as indexed EOA
< 0.65cm2/m2)
• Patients with severe PPM:
• Worse functional class and exercise capacity
• Reduced regression of LVH
• More HF related rehospitalization
• Reduced medium to long term survival
• Faster structural degeneration of bioprosthetic SAVR
• TAVR (esp self-expanding version) a/w less PPM than SAVR, but >
pacemaker and PVR
8. Tasca G et al. Impact of valve prosthesis-patient mismatch on left ventricular mass regression
following aortic valve replacement. Ann Thorac Surg 2005;79:505–10.
9. Head S et al. The impact of prosthesis-patient mismatch on long term survival after aortic valve replacement: a systematic review and meta-
analysis of 34 observational studies comprising 27,186 patients with 133, 141 patient-years. Eur Heart J 2012;33:1518–29.
10. Fallon JM, DeSimone JP, Brennan JM, et al. The incidence and consequence of prosthesis-patient
mismatch after surgical aortic valve replacement. Ann Thorac Surg 2018;106:14–22.
11. Fallon JM, DeSimone JP, Brennan JM, et al. The incidence and consequence of prosthesis-patient
mismatch after surgical aortic valve replacement. Ann Thorac Surg 2018;106:14–22.
12. Fallon JM, DeSimone JP, Brennan JM, et al. The incidence and consequence of prosthesis-patient
mismatch after surgical aortic valve replacement. Ann Thorac Surg 2018;106:14–22.
13. Fallon JM, DeSimone JP, Brennan JM, et al. The incidence and consequence of prosthesis-patient
mismatch after surgical aortic valve replacement. Ann Thorac Surg 2018;106:14–22.
15. Bleiziffer S, Eichinger WB, Hettich I, et al. Impact of prosthesis-patient mismatch on exercise
capacity in patients after bioprosthetic aortic valve replacement. Heart 2008;94:637–41.
17. Pibarot et al. Incidence and sequelae of prosthesis-patient mismatch in transcatheter versus surgical
valve replacement in high-risk patients with severe aortic stenosis: a PARTNER trial cohort A
analysis. J Am Coll Cardiol 2014;64:1323–34.
18. Takagi H, Yamamoto H, Iwata K, Goto SN, Umemoto T. A meta-analysis of effects of prosthesis-
patient mismatch after aortic valve replacement on late mortality. Int J Cardiol 2012; 159:150–4.
24. Dayan V et al. Predictors and outcomes of prosthesis patient mismatch after aortic valve replacement. J Am Coll Cardiol Img 2016;9: 924–33.
25. How to prevent PPM?
• Knowledge of size and model of prosthesis → reference against
published EOA values (EACVI 2016) → divide this EOA by patient’s BSA
Lancellotti P, Pibarot P, Chambers J, et al. Recommendations for the imaging assessment of prosthetic heart valves: a report from the European
Association of Cardiovascular Imaging endorsed by the Chinese Society of Echocardiography, the Interamerican Society of Echocardiography
and the Brazilian Department of Cardiovascular Imaging. Eur Heart J Cardiovasc Imaging 2016;17:589–90.
26. What to do if predicted iEOA = PPM?
1. Change to another model of prosthetic valve with larger predicted
iEOA
2. Enlarge aortic root / annulus to accommodate larger sized valve
(depends on anatomy of aortic root)
3. TAVR instead of SAVR
• Again, need to predict iEOA pre-op
• 3D TEE or MDCT to identify pts with small Ao annulus whereby mod-large
sized valve may be difficult even after debridement
27. TAVR – “1-size-fits-all”
• Final TAVR prosthesis size is determined by native annular size and not
TAVR size itself
• A single-size transcatheter valve can be implanted across a range of
different annular sizes, and expanded to fill the annular space
• Any given model/label size of a TAVR valve thus provides a larger EOA when
fully deployed in a larger annulus
• Reference the normal values
Hahn RT, Leipsic J, Douglas PS, et al. Comprehensive echocardiographic assessment of normal transcatheter
valve function. J Am Coll Cardiol Img 2018 Jun 13.
31. Beware the Russian Doll
• Transcatheter valve-in-valve procedure for degenerative bioprosthesis
have shown positive results in functional, haemodynamic and clinical
outcomes
• However, if high gradient was due to PPM in the first place,
telescoping another valve inside the prosthesis will not solve the PPM
oKey is to distinguish etiology of elevated gradient: stenosis / valve
degeneration, regurgitation, PPM, or combination of above
oUsage of oversized non-compliant balloon to fracture pre-existing
bioprosthetic stent to accommodate larger TAVR valve
oNewer gen SAVR valves have expandable frame (e.g. INSPIRIS Resilia AV,
Edwards LifeSciences), which does not require frame breaking
oTAVR valve with supra-annular design: high implant depth (0-2mm below
bioprosth stent) may also help increase EOA post TAVR
32.
33. Pibarot P, Simonato M, Barbanti M, et al. Impact of pre-existing prosthesis-patient mismatch on survival following aortic valve-
in- valve procedures. J Am Coll Cardiol Intv 2018;11: 133–41.
34. Pibarot P, Simonato M, Barbanti M, et al. Impact of pre-existing prosthesis-patient mismatch on survival following aortic valve-
in- valve procedures. J Am Coll Cardiol Intv 2018;11: 133–41.
35. Simonato M, Azadani AN, Webb J, et al. In vitro evaluation of implantation depth in valve-in-valve using different transcatheter
heart valves. EuroIntervention 2016;12:909–17.
36. Simonato M et al. Transcatheter replacement of failed bioprosthetic valves: Large multicenter assessment of the effect of
implantation depth on hemodynamics after aortic valve-in-valve. Circ Cardiovasc Interv 2016; 9:e003651.
37. Simonato M et al. Transcatheter replacement of failed bioprosthetic valves: Large multicenter assessment of the effect of
implantation depth on hemodynamics after aortic valve-in-valve. Circ Cardiovasc Interv 2016; 9:e003651.
38. Simonato M et al. Transcatheter replacement of failed bioprosthetic valves: Large multicenter assessment of the effect of
implantation depth on hemodynamics after aortic valve-in-valve. Circ Cardiovasc Interv 2016; 9:e003651.
43. Lancellotti P, Pibarot P, Chambers J, et al. Recommendations for the imaging assessment of prosthetic heart valves: a report from the Euro-
pean Association of Cardiovascular Imaging endorsed by the Chinese Society of Echocardiog- raphy, the Interamerican Society of Echocardiog-
raphy and the Brazilian Department of Cardiovascular Imaging. Eur Heart J Cardiovasc Imaging 2016;17:589–90.
44. Doppler Parameters
• Accurate derivation of the EOA from continuity equation MANDATES
the precise measurements of LVOT diameter and position of PW
sample of LVOT VTI
LVOT diameter measured from outer border to outer border of stent/ring
PW sample immediately below apical border of stent (no opening/closing
clicks should be seen)
• Multi-modality imaging – CT measurement of LVOT area
45. Doppler Parameters
• Measured EOA difference
If >0.3cm2 difference between measured and reference value → suspect
stenosis
If >0.6cm2 difference between measured and reference value → sig stenosis
• Doppler Velocity Index (DVI): ratio of LVOT VTI to AV VTI
<0.35 → mild to mod stenosis
<0.25 → severe stenosis
• Ratio of accel time to ejection time
<0.32 → PPM
>0.32 → stenosis
46. Serial Changes
• Compare velocity and gradients to baseline measurements post op
(pre-discharge echo)
Recommended 1 month post AVR
PPM → at valve implantation →stable over time;
PrAV stenosis → post op increase in gradient / velocity over time
• Post op increase in MPG, with stable or increase in EOA and DVI →
likely from systolic function recovery and improved flow (do not
misinterpret this as stenosis)
• Remember that PPM and PrAV stenosis are not mutually exclusive –
both can co-exist in the same patient
51. Management of PPM
• Consider valve reintervention when
PPM severe
MPG > 30mmHg
HF
Drop in LVEF
• Options
Re-do SAVR with larger sized prosthesis
Transcatheter ViV with self-expanding valve and supra-annular design +
fracturing of first SAVR valve
52. Summary
• PREVENTION
• Understand PPM – strategize pre-operatively to avoid it by sizing the
prosthesis appropriately
• DETECTION
• Recognize PPM and differentiate it from valve stenosis
• INTERVENTION
• Emerging role of ViV TAVR in managing PrAV PPM
53. Causes of High MPG
Obstruction High Flow PPM Pressure
Recovery
Gradients ↑ ↑ ↑ ↑
DVI ↓ Normal Normal ↓
EOA ↓ Normal Normal ↓
iEOA ↓ Normal ↓ ↓
Change in EOA
or DVI over
baseline?
Yes No No No
Abnormal
leaflet motion
Yes No No No