1. The study analyzed blood pressure data from over 11,500 participants aged 25-64 years in 7 major Latin American cities.
2. Results showed that the prevalence of hypertension ranged from 9% in Quito to 29% in Buenos Aires. One quarter to one half of hypertension cases were previously undiagnosed.
3. Blood pressure increased with age in both men and women, though the increase was more pronounced in women. Most hypertensive patients also had additional cardiovascular risk factors.
Atherothrombotic Disease, Traditional Risk Factors, and 4-Year Mortality in a...Erwin Chiquete, MD, PhD
Erwin Chiquete, MD, PhD
Background: Atherothrombosis is becoming the leading cause of chronic morbidity in developing countries. This
epidemiological transition will represent an unbearable socioeconomic burden in the near future. We investigated
factors associated with 4-year all-cause mortality in a Latin American population at high risk.
Hypothesis: Largely modifiable risk factors as well as polyvascular disease are the main predictors of 4-year all-cause and
cardiovascular mortality in this Latin American cohort.
Methods: We analyzed 1816 Latin American stable outpatients (62.3% men, mean age 67 years) with symptomatic
atherothrombosis (87.1%) or with multiple risk factors only (12.9%), in the Reduction of Atherothrombosis for Continued
Health registry.
Results: Of patients with symptomatic atherothrombosis, 57.3% had coronary artery disease, 32% cerebrovascular disease,
and 11.7% peripheral artery disease at baseline (9.1% polyvascular). The main risk factors were hypertension (76%),
hypercholesterolemia (60%), and smoking (52.3%) in patients with established atherothrombosis; and hypertension
(89.7%), diabetes (80.8%), and hypercholesterolemia (73.9%) in those with risk factors only. Four-year all-cause mortality
steeply increased with none (6.8%), 1 (9.2%), 2 (15.5%), and 3 (29.2%) symptomatic arterial disease locations. In patients
with only 1 location, cardiovascular mortality was significantly higher with peripheral artery disease (11.3%) than with
cerebrovascular disease (6%) or coronary artery disease (5.1%). Significant baseline predictors of 4-year all-cause mortality
were congestive heart failure (hazard ratio [HR]: 3.81), body mass index<20 (HR: 2.32), hypertension (HR: 1.84), polyvascular
disease (HR: 1.69), and age ≥65 years (HR: 1.47), whereas statin use (HR: 0.49) and body mass index ≥30 (HR: 0.58) were
associated with a reduced risk.
Conclusions: Hypertension was the main modifiable risk factor for atherothrombosis and all-cause mortality in this Latin
Addison’s Disease (AD) or primary adrenal insuffi ciency has been thought a rare disease for a long time, but recent epidemiological studies have reported a rising prevalence in developed countries. Among the causes of apparently idiopathic forms, autoimmunity plays a relevant role. This review will be focused on several aspects of autoimmune AD, which may manifest either as an isolated disorder or associated with other autoimmune diseases among the autoimmune polyglandular syndromes. HLA plays a key role in determining. T cell responses to antigens, and various HLA alleles have been shown to be associated with many T cell-mediated autoimmune
disorders, but the mechanism by which the adrenal cortex is destroyed in AD is still discussed. Cytotoxic T lymphocytes are thought. to be the most important effector cells in mediating the autoimmune tissue destruction, because Adrenal Cortex Autoantibodies (ACA) and/or autoantibodies against 21 idroxylase (21-OHAb) do not seem to be directly involved in the pathogenesis, being considered only good marker of the disease both in clinical and in preclinical stage. In fact, subclinical autoimmune AD can evolve trough 5 functional
stages from stage 0 (only presence of autoantibodies) to stage 4 (clinically overt disease). All the fi ve stages are characterized by the presence of these antibodies but only when they are present at high titre in subclinical stages are associated with the progression towards clinically overt autoimmune AD, whereas a spontaneous remission of subclinical adrenal dysfunction with their disappearance may occur when they are present at low titres. Treatment of AD is based on the use of hydrocortisone or cortisone for symptomatic patients; fl udrocortisone should be used as substitute for mineral-corticosteroids. In some cases, an early replacement therapy has been shown to be helpful to interrupt the progression towards the clinical stage with disappearance of these autoantibodies and recovery of adrenal
function. In addition, a life-threatening adrenal crisis in patients with chronic adrenal insuffi ciency under established replacement therapy. may occur. Clinical medicine must pay attention to these situations because an untreated Addisonian crisis is a medical emergency that requires hospitalization, and if not caught early can be fatal.
Atherothrombotic Disease, Traditional Risk Factors, and 4-Year Mortality in a...Erwin Chiquete, MD, PhD
Erwin Chiquete, MD, PhD
Background: Atherothrombosis is becoming the leading cause of chronic morbidity in developing countries. This
epidemiological transition will represent an unbearable socioeconomic burden in the near future. We investigated
factors associated with 4-year all-cause mortality in a Latin American population at high risk.
Hypothesis: Largely modifiable risk factors as well as polyvascular disease are the main predictors of 4-year all-cause and
cardiovascular mortality in this Latin American cohort.
Methods: We analyzed 1816 Latin American stable outpatients (62.3% men, mean age 67 years) with symptomatic
atherothrombosis (87.1%) or with multiple risk factors only (12.9%), in the Reduction of Atherothrombosis for Continued
Health registry.
Results: Of patients with symptomatic atherothrombosis, 57.3% had coronary artery disease, 32% cerebrovascular disease,
and 11.7% peripheral artery disease at baseline (9.1% polyvascular). The main risk factors were hypertension (76%),
hypercholesterolemia (60%), and smoking (52.3%) in patients with established atherothrombosis; and hypertension
(89.7%), diabetes (80.8%), and hypercholesterolemia (73.9%) in those with risk factors only. Four-year all-cause mortality
steeply increased with none (6.8%), 1 (9.2%), 2 (15.5%), and 3 (29.2%) symptomatic arterial disease locations. In patients
with only 1 location, cardiovascular mortality was significantly higher with peripheral artery disease (11.3%) than with
cerebrovascular disease (6%) or coronary artery disease (5.1%). Significant baseline predictors of 4-year all-cause mortality
were congestive heart failure (hazard ratio [HR]: 3.81), body mass index<20 (HR: 2.32), hypertension (HR: 1.84), polyvascular
disease (HR: 1.69), and age ≥65 years (HR: 1.47), whereas statin use (HR: 0.49) and body mass index ≥30 (HR: 0.58) were
associated with a reduced risk.
Conclusions: Hypertension was the main modifiable risk factor for atherothrombosis and all-cause mortality in this Latin
Addison’s Disease (AD) or primary adrenal insuffi ciency has been thought a rare disease for a long time, but recent epidemiological studies have reported a rising prevalence in developed countries. Among the causes of apparently idiopathic forms, autoimmunity plays a relevant role. This review will be focused on several aspects of autoimmune AD, which may manifest either as an isolated disorder or associated with other autoimmune diseases among the autoimmune polyglandular syndromes. HLA plays a key role in determining. T cell responses to antigens, and various HLA alleles have been shown to be associated with many T cell-mediated autoimmune
disorders, but the mechanism by which the adrenal cortex is destroyed in AD is still discussed. Cytotoxic T lymphocytes are thought. to be the most important effector cells in mediating the autoimmune tissue destruction, because Adrenal Cortex Autoantibodies (ACA) and/or autoantibodies against 21 idroxylase (21-OHAb) do not seem to be directly involved in the pathogenesis, being considered only good marker of the disease both in clinical and in preclinical stage. In fact, subclinical autoimmune AD can evolve trough 5 functional
stages from stage 0 (only presence of autoantibodies) to stage 4 (clinically overt disease). All the fi ve stages are characterized by the presence of these antibodies but only when they are present at high titre in subclinical stages are associated with the progression towards clinically overt autoimmune AD, whereas a spontaneous remission of subclinical adrenal dysfunction with their disappearance may occur when they are present at low titres. Treatment of AD is based on the use of hydrocortisone or cortisone for symptomatic patients; fl udrocortisone should be used as substitute for mineral-corticosteroids. In some cases, an early replacement therapy has been shown to be helpful to interrupt the progression towards the clinical stage with disappearance of these autoantibodies and recovery of adrenal
function. In addition, a life-threatening adrenal crisis in patients with chronic adrenal insuffi ciency under established replacement therapy. may occur. Clinical medicine must pay attention to these situations because an untreated Addisonian crisis is a medical emergency that requires hospitalization, and if not caught early can be fatal.
Blood pressure at hospital admission and outcome after primary intracerebral ...Erwin Chiquete, MD, PhD
Introduction: The importance of the admission blood pressure (BP) for intracerebral
hemorrhage (ICH) outcome is not completely clear. Our objective was to
analyze the clinical impact of BP at hospital arrival in patients with primary ICH.
Material and methods: We studied 316 patients (50% women, mean age:
64 years, 75% with hypertension history) with acute primary ICH. The first BP reading
at admission was evaluated for its association with neuroimaging findings
and outcome. A Cox proportional hazards model and Kaplan-Meier analyses
were constructed to evaluate factors associated with in-hospital mortality.
Results: Intraventricular irruption occurred in 52% of cases. A high frequency
of third ventricle extension was observed in patients with BP readings in the
upper quartiles of the distribution (systolic, diastolic, or mean arterial pressure).
Blood pressure readings did not correlate with hematoma volumes. In-hospital
case fatality rate was 46% (63% among those with ventricular irruption). Systolic
BP (SBP) > 190 mm Hg was independently associated with in-hospital mortality
in supratentorial (n = 285) ICH (hazard ratio: 1.19, 95% confidence interval:
1.02-1.38, for the highest vs. the lowest quartile) even after adjustment for
known strong predictors (age, ICH volume, Glasgow coma scale and ventricular
extension). Blood pressure was not significantly associated with ventricular
extension or outcome in patients with infratentorial ICH.
Conclusions: A high BP on admission is associated with an increased risk of
intraventricular extension and early mortality in patients with supratentorial
ICH. However, a significant proportion of patients with high BP readings without
ventricular irruption still have an increased risk of death.
Hypertension is a silent, invisible killer that rarely causes symptoms. Increasing public awareness is key, as is access .Raised blood pressure is a warning sign that significant lifestyle changes are urgently needed. People need to know why raised blood pressure is dangerous, and how to take steps to control it.
The goal of this webinar is to educate physicians and healthcare professionals about hospice eligibility and benefits for patients with advanced cardiac disease (ACD) who have a prognosis of ≤6 months. Through evidence-based data and a review of case studies, attendees understand the benefits of advance care planning, complex modalities for high-acuity cardiac patients, how to manage symptoms, address pain and provide comfort and dignity near the end of life.
Heart failure is the leading cause of death in the US, yet accounts for less than 20 percent of hospice admissions. The goal of this webinar is to teach healthcare professionals to recognize what were once routine and manageable exacerbations as signs of unstable terminal illness, and to understand why hospice improves quality of life when proven treatments no longer can can.
Blood pressure at hospital admission and outcome after primary intracerebral ...Erwin Chiquete, MD, PhD
Introduction: The importance of the admission blood pressure (BP) for intracerebral
hemorrhage (ICH) outcome is not completely clear. Our objective was to
analyze the clinical impact of BP at hospital arrival in patients with primary ICH.
Material and methods: We studied 316 patients (50% women, mean age:
64 years, 75% with hypertension history) with acute primary ICH. The first BP reading
at admission was evaluated for its association with neuroimaging findings
and outcome. A Cox proportional hazards model and Kaplan-Meier analyses
were constructed to evaluate factors associated with in-hospital mortality.
Results: Intraventricular irruption occurred in 52% of cases. A high frequency
of third ventricle extension was observed in patients with BP readings in the
upper quartiles of the distribution (systolic, diastolic, or mean arterial pressure).
Blood pressure readings did not correlate with hematoma volumes. In-hospital
case fatality rate was 46% (63% among those with ventricular irruption). Systolic
BP (SBP) > 190 mm Hg was independently associated with in-hospital mortality
in supratentorial (n = 285) ICH (hazard ratio: 1.19, 95% confidence interval:
1.02-1.38, for the highest vs. the lowest quartile) even after adjustment for
known strong predictors (age, ICH volume, Glasgow coma scale and ventricular
extension). Blood pressure was not significantly associated with ventricular
extension or outcome in patients with infratentorial ICH.
Conclusions: A high BP on admission is associated with an increased risk of
intraventricular extension and early mortality in patients with supratentorial
ICH. However, a significant proportion of patients with high BP readings without
ventricular irruption still have an increased risk of death.
Hypertension is a silent, invisible killer that rarely causes symptoms. Increasing public awareness is key, as is access .Raised blood pressure is a warning sign that significant lifestyle changes are urgently needed. People need to know why raised blood pressure is dangerous, and how to take steps to control it.
The goal of this webinar is to educate physicians and healthcare professionals about hospice eligibility and benefits for patients with advanced cardiac disease (ACD) who have a prognosis of ≤6 months. Through evidence-based data and a review of case studies, attendees understand the benefits of advance care planning, complex modalities for high-acuity cardiac patients, how to manage symptoms, address pain and provide comfort and dignity near the end of life.
Heart failure is the leading cause of death in the US, yet accounts for less than 20 percent of hospice admissions. The goal of this webinar is to teach healthcare professionals to recognize what were once routine and manageable exacerbations as signs of unstable terminal illness, and to understand why hospice improves quality of life when proven treatments no longer can can.
Artificial intelligence (AI) is everywhere, promising self-driving cars, medical breakthroughs, and new ways of working. But how do you separate hype from reality? How can your company apply AI to solve real business problems?
Here’s what AI learnings your business should keep in mind for 2017.
Effects of a Community Population Health Initiative onBlood .docxgidmanmary
Effects of a Community Population Health Initiative on
Blood Pressure Control in Latinos
James R. Langabeer II, PhD, EdD; Timothy D. Henry, MD, FACC; Carlos Perez Aldana, MS; Larissa DeLuna; Nora Silva, MPA;
Tiffany Champagne-Langabeer, PhD, RD
Background-—Hypertension remains one of the most important, modifiable cardiovascular risk factors. Yet, the largest minority
ethnic group (Hispanics/Latinos) often have different health outcomes and behavior, making hypertension management more
difficult. We explored the effects of an American Heart Association–sponsored population health intervention aimed at modifying
behavior of Latinos living in Texas.
Methods and Results-—We enrolled 8071 patients, and 5714 (65.7%) completed the 90-day program (58.5 years �11.7; 59%
female) from July 2016 to June 2018. Navigators identified patients with risk factors; initial and final blood pressure (BP) readings
were performed in the physician’s office; and interim home measurements were recorded telephonically. The intervention
incorporated home BP monitoring, fitness and nutritional counseling, and regular follow-up. Primary outcomes were change in
systolic BP and health-related quality of life. Using a univariate paired-samples pre–post design, we found an average 5.5% (7.6-
mm Hg) improvement in systolic BP (139.1 versus 131.5, t=10.32, P<0.001). Quality of life measured by the European quality of
life 5-dimension visual analog scale improved from 0.79 to 0.82 (t=31.03, P<0.001). After multivariate regression analyses,
improvements in quality of life and overall body mass index were significantly associated with reductions in systolic BP.
Conclusions-—A noninvasive, population health initiative that encourages routine engagement in patients’ own BP control was
associated with improvements in systolic BP and quality of life for this largely Latino community. (J Am Heart Assoc. 2018;7:
e010282. DOI: 10.1161/JAHA.118.010282.)
Key Words: blood pressure measurement/monitoring • ethnicity • hypertension • population
H ypertension remains a major but modifiable risk factorfor cardiovascular disease (CVD) and stroke in the
United States. It is estimated that the hypertension preva-
lence rates based on current guidelines affect 46% of the
population, or nearly 115 million adults in the United States
alone.1 The American Heart Association (AHA) established
strategic impact goals aimed at reducing CVD and stroke
deaths by 20% by the year 2020.2 The strategy introduced a
concept for cardiovascular health that is characterized by 7
metrics known as “Life’s Simple 7.”3 These metrics focus on
the patient’s self-engagement in monitoring their health and
key measures and emphasizes 4 health behaviors and 3
health factors, including blood pressure (BP) reduction.
Cardiovascular health has been shown to have ethnic and
racial variation due to genetic, culture, nutritional, socioeco-
nomic, and other factors.4,5 Hispanic and Latino people
(Latinos) compose the largest ...
Effects of a Community Population Health Initiative onBlood .docxtoltonkendal
Effects of a Community Population Health Initiative on
Blood Pressure Control in Latinos
James R. Langabeer II, PhD, EdD; Timothy D. Henry, MD, FACC; Carlos Perez Aldana, MS; Larissa DeLuna; Nora Silva, MPA;
Tiffany Champagne-Langabeer, PhD, RD
Background-—Hypertension remains one of the most important, modifiable cardiovascular risk factors. Yet, the largest minority
ethnic group (Hispanics/Latinos) often have different health outcomes and behavior, making hypertension management more
difficult. We explored the effects of an American Heart Association–sponsored population health intervention aimed at modifying
behavior of Latinos living in Texas.
Methods and Results-—We enrolled 8071 patients, and 5714 (65.7%) completed the 90-day program (58.5 years �11.7; 59%
female) from July 2016 to June 2018. Navigators identified patients with risk factors; initial and final blood pressure (BP) readings
were performed in the physician’s office; and interim home measurements were recorded telephonically. The intervention
incorporated home BP monitoring, fitness and nutritional counseling, and regular follow-up. Primary outcomes were change in
systolic BP and health-related quality of life. Using a univariate paired-samples pre–post design, we found an average 5.5% (7.6-
mm Hg) improvement in systolic BP (139.1 versus 131.5, t=10.32, P<0.001). Quality of life measured by the European quality of
life 5-dimension visual analog scale improved from 0.79 to 0.82 (t=31.03, P<0.001). After multivariate regression analyses,
improvements in quality of life and overall body mass index were significantly associated with reductions in systolic BP.
Conclusions-—A noninvasive, population health initiative that encourages routine engagement in patients’ own BP control was
associated with improvements in systolic BP and quality of life for this largely Latino community. (J Am Heart Assoc. 2018;7:
e010282. DOI: 10.1161/JAHA.118.010282.)
Key Words: blood pressure measurement/monitoring • ethnicity • hypertension • population
H ypertension remains a major but modifiable risk factorfor cardiovascular disease (CVD) and stroke in the
United States. It is estimated that the hypertension preva-
lence rates based on current guidelines affect 46% of the
population, or nearly 115 million adults in the United States
alone.1 The American Heart Association (AHA) established
strategic impact goals aimed at reducing CVD and stroke
deaths by 20% by the year 2020.2 The strategy introduced a
concept for cardiovascular health that is characterized by 7
metrics known as “Life’s Simple 7.”3 These metrics focus on
the patient’s self-engagement in monitoring their health and
key measures and emphasizes 4 health behaviors and 3
health factors, including blood pressure (BP) reduction.
Cardiovascular health has been shown to have ethnic and
racial variation due to genetic, culture, nutritional, socioeco-
nomic, and other factors.4,5 Hispanic and Latino people
(Latinos) compose the largest .
Diagnosis of Early Risks, Management of Risks, and Reduction of Vascular Dise...asclepiuspdfs
In a recent issue of the Journal of Circulation, American Heart Association has published a scientific statement, related to the excess heart disease and acute vascular events in South Asians living in the USA. The same group of experts, also have published a complementary article in Circulation titled, “call to action: Cardiovascular disease (CVD) in Asian Americans.”I being a South Asian immigrant living in the USA, have always wondered as to why we do not have the same benefits as the other resident Americans in terms of the advantages of living in a highly advanced country? According to a study done in 2013, cardiovascular mortality has declined and diabetes mortality has increased in high-income countries. The study done in 26 industrialized nations, estimated the potential role of trends in population, for body mass index, systolic blood pressure, serum total cholesterol, and smoking, the modifiable risk factors identified as the promoters of CVD, and acute vascular events, by the Framingham Heart Study (FHS) group.
application of epidemiology in htn in community.pptxanjalatchi
Hypertension is when blood pressure is too high. Blood pressure is written as two numbers. The first (systolic) number represents the pressure in blood vessels when the heart contracts or beats. The second (diastolic) number represents the pressure in the vessels when the heart rests between beats.
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
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.
HOT NEW PRODUCT! BIG SALES FAST SHIPPING NOW FROM CHINA!! EU KU DB BK substit...GL Anaacs
Contact us if you are interested:
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Protonitazene (hydrochloride) CAS: 119276-01-6
Flubrotizolam CAS: 57801-95-3
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Samples will be sent for your evaluation!If you are interested in, please contact me, let's talk details.
We specializes in exporting high quality Research chemical, medical intermediate, Pharmaceutical chemicals and so on. Products are exported to USA, Canada, France, Korea, Japan,Russia, Southeast Asia and other countries.
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
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
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.
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
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 simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
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.
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.
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