Homeostatic Regulation of the Vascular System
... • Discuss the mechanisms involved in the neural regulation of vascular homeostasis • Describe the contribution of a variety of hormones to the renal regulation of blood pressure • Identify the eects of exercise on vascular homeostasis • Discuss how hypertension, hemorrhage, and circulatory shock a ...
... • Discuss the mechanisms involved in the neural regulation of vascular homeostasis • Describe the contribution of a variety of hormones to the renal regulation of blood pressure • Identify the eects of exercise on vascular homeostasis • Discuss how hypertension, hemorrhage, and circulatory shock a ...
The Pathophysiology of Cardiovascular Disease and Diabetes
... the autonomic nervous system, the endothelium, and local metabolism, all of which can result in microvascular disease. Diabetic autonomic neuropathy (DAN) is one factor associated with impaired autoregulation of blood flow in a variety of vascular beds, including the skin and the heart.17,18 Patient ...
... the autonomic nervous system, the endothelium, and local metabolism, all of which can result in microvascular disease. Diabetic autonomic neuropathy (DAN) is one factor associated with impaired autoregulation of blood flow in a variety of vascular beds, including the skin and the heart.17,18 Patient ...
HEART RATE,HAEMATOLOGICAL AND BIOCHEMICAL
... horses. The rate of decrease of heart rate following exercise and the time required to reach resting levels depends upon the severity of the exercise even in fit horses. Heart rate falls rapidly over the first minute and then more slowly over the ensuing 10 to 15 minutes period. In this study the me ...
... horses. The rate of decrease of heart rate following exercise and the time required to reach resting levels depends upon the severity of the exercise even in fit horses. Heart rate falls rapidly over the first minute and then more slowly over the ensuing 10 to 15 minutes period. In this study the me ...
Mitral ValVe - Advocate Health Care
... Diagnostic tests available include: Electrocardiogram (EKG) A test that records the electrical activity of the heart and detects heart muscle damage may also reveal arrhythmias and/or chamber enlargement. Echocardiography Creates a two-dimensional picture of the cardiovascular system and can also pr ...
... Diagnostic tests available include: Electrocardiogram (EKG) A test that records the electrical activity of the heart and detects heart muscle damage may also reveal arrhythmias and/or chamber enlargement. Echocardiography Creates a two-dimensional picture of the cardiovascular system and can also pr ...
Ventricular Septal Defect
... Obstructive pulmonary arteriolar disease does not occur due to small ventricular defects. Infective endocarditis is the only risk in those patients in whom the defect remains patent. If endocarditis occurs, the site is usually on the right ventricular wall or on the tricuspid valve. Aortic regurgita ...
... Obstructive pulmonary arteriolar disease does not occur due to small ventricular defects. Infective endocarditis is the only risk in those patients in whom the defect remains patent. If endocarditis occurs, the site is usually on the right ventricular wall or on the tricuspid valve. Aortic regurgita ...
Abnormal Left Ventricular Relaxation in Hypertensive Patients
... in a grey zone; study of their haemodynamic data showed that they differed from other hypertensive patients in the group by a higher cardiac index (> 3.6 litres min-' m-*) and shorter mean transit time (< 7 s) indicative of hyperkinetic circulations. Therefore they were considered separately in the ...
... in a grey zone; study of their haemodynamic data showed that they differed from other hypertensive patients in the group by a higher cardiac index (> 3.6 litres min-' m-*) and shorter mean transit time (< 7 s) indicative of hyperkinetic circulations. Therefore they were considered separately in the ...
Q21 Define preload and describe the determinants
... Preload is defined as the stretch on myocardial fibres just prior to contraction. The Frank Starling mechanism states that the force of cardiac contraction is dependent on the initial stretch of the myoc ...
... Preload is defined as the stretch on myocardial fibres just prior to contraction. The Frank Starling mechanism states that the force of cardiac contraction is dependent on the initial stretch of the myoc ...
Dissection and Contraction of Frog Heart
... is also shown nicely through a series of images in the web site curry.edschool.virginia.edu/go/frog/Frog1/menu.html. Go to the point of the Layer One section and focus on the heart. The point here is not to perform a detailed dissection but to make you familiar with the general anatomy and comforta ...
... is also shown nicely through a series of images in the web site curry.edschool.virginia.edu/go/frog/Frog1/menu.html. Go to the point of the Layer One section and focus on the heart. The point here is not to perform a detailed dissection but to make you familiar with the general anatomy and comforta ...
3D printing, heart
... In this article, the author explains the various ways that scientists have succeeded in bioprinting of living tissues such as kidneys, and livers which will help those patients who are on waiting lists for organs. The organs are made with the patient’s own cells so as to reduce the chance of rejecti ...
... In this article, the author explains the various ways that scientists have succeeded in bioprinting of living tissues such as kidneys, and livers which will help those patients who are on waiting lists for organs. The organs are made with the patient’s own cells so as to reduce the chance of rejecti ...
Goldman MJ (1986): Principles of Clinical Electrocardiography, 12th
... through its effect on the sinus node, causes an increase in heart rate during inspiration and a decrease during expiration. The effect is particularly pronounced in children. Note, that in all of the preceding rhythms the length of the cardiac activation cycle (the P-QRS-T-waves together) is less th ...
... through its effect on the sinus node, causes an increase in heart rate during inspiration and a decrease during expiration. The effect is particularly pronounced in children. Note, that in all of the preceding rhythms the length of the cardiac activation cycle (the P-QRS-T-waves together) is less th ...
Overview of implantable cardioverter defibrillator
... fraction of ≤ 35%; and NYHA Class II or III status, with good functional capacity or life expectancy of more than one year (for patients with ischaemic LV dysfunction, the index acute myocardial infarction should be 40 days or longer). European guidelines further recommend that patients should be on ...
... fraction of ≤ 35%; and NYHA Class II or III status, with good functional capacity or life expectancy of more than one year (for patients with ischaemic LV dysfunction, the index acute myocardial infarction should be 40 days or longer). European guidelines further recommend that patients should be on ...
Cardiac cycle
... It is the events which take place during one heart beat (systole & diastole) and are repeated during the next. (Note: Systole & diastole are referred to ( )تستخدم لـthe ventricle in general). The time for it is 0.8 sec when the heart rate is 75 beats/min. (Note: The relation between Heart rate and ...
... It is the events which take place during one heart beat (systole & diastole) and are repeated during the next. (Note: Systole & diastole are referred to ( )تستخدم لـthe ventricle in general). The time for it is 0.8 sec when the heart rate is 75 beats/min. (Note: The relation between Heart rate and ...
Document
... R C Turner, H Millns, H A W Neil, I M Stratton, S E Manley, D R Matthews, and R R Holman. Risk factors for coronary artery disease in non-insulin dependent diabetes mellitus: United Kingdom prospective diabetes ...
... R C Turner, H Millns, H A W Neil, I M Stratton, S E Manley, D R Matthews, and R R Holman. Risk factors for coronary artery disease in non-insulin dependent diabetes mellitus: United Kingdom prospective diabetes ...
Full text (PDF file)
... The assessment of ventricular function is an important task in the evaluation of patients with known or suspected heart disease. There are several parameters that can be used to evaluate ventricular function but most of them are relatively dependent on afterload and preload. The maximum rate of rise ...
... The assessment of ventricular function is an important task in the evaluation of patients with known or suspected heart disease. There are several parameters that can be used to evaluate ventricular function but most of them are relatively dependent on afterload and preload. The maximum rate of rise ...
HYPERTROPHIC CARDIOMYOPATHY
... Individuals presenting before the age of one year have the most diverse etiologies and poorest outcomes. Hypertrophy can be septal, apical, or concentric; asymmetrical ventricular hypertrophy is most common. Obstructive HCM occurs when ventricular outflow is compromised. HCM can be associated with s ...
... Individuals presenting before the age of one year have the most diverse etiologies and poorest outcomes. Hypertrophy can be septal, apical, or concentric; asymmetrical ventricular hypertrophy is most common. Obstructive HCM occurs when ventricular outflow is compromised. HCM can be associated with s ...
Things you need to know
... • Clinic staff will send your child or family member to the hospital to confirm if they have acute rheumatic fever. • Your child/family member may need to stay in hospital for a few days/weeks to have tests such as an ultrasound of the heart and blood tests. • Hospital staff will also treat the f ...
... • Clinic staff will send your child or family member to the hospital to confirm if they have acute rheumatic fever. • Your child/family member may need to stay in hospital for a few days/weeks to have tests such as an ultrasound of the heart and blood tests. • Hospital staff will also treat the f ...
Abbott Announces CE Mark for TactiCath™ Contact Force Ablation
... for physicians to more effectively treat atrial fibrillation (AF), a condition in which the upper chambers of the heart beat too fast. When integrated with Abbott's EnSite Precision™ cardiac mapping system, physicians are able to utilize dual impedance and magnetic technologies to help more precisel ...
... for physicians to more effectively treat atrial fibrillation (AF), a condition in which the upper chambers of the heart beat too fast. When integrated with Abbott's EnSite Precision™ cardiac mapping system, physicians are able to utilize dual impedance and magnetic technologies to help more precisel ...
Exercise Training and Atrial Fibrillation
... with no significant change in the control group. Of the exercise group, 38% of patients experienced a decline in their arrhythmia burden in comparison with only 20% of the control group. Increased AF burden was more common in the control patients (64%) than in the exercise group (12%). Importantly, ...
... with no significant change in the control group. Of the exercise group, 38% of patients experienced a decline in their arrhythmia burden in comparison with only 20% of the control group. Increased AF burden was more common in the control patients (64%) than in the exercise group (12%). Importantly, ...
A comparative study of contractility of the heart ventricle in some
... not statistically significant. Possible causes for these differences are discussed. We suppose a large variety in ventricular contractility among amphibian and reptilian species having the same ventricular activation pattern. This variety may be conditioned by heart anatomy, intracardiac shunting, l ...
... not statistically significant. Possible causes for these differences are discussed. We suppose a large variety in ventricular contractility among amphibian and reptilian species having the same ventricular activation pattern. This variety may be conditioned by heart anatomy, intracardiac shunting, l ...
Protein Engineering for Cardiovascular Therapeutics
... development and plays an important role in cardiovascular disease.88 The cardioprotective potential of NRG has been well-established in preclinical models,89,90 and enthusiasm for future therapeutic application of NRG in heart failure increased on the report of its potential ability to induce cardio ...
... development and plays an important role in cardiovascular disease.88 The cardioprotective potential of NRG has been well-established in preclinical models,89,90 and enthusiasm for future therapeutic application of NRG in heart failure increased on the report of its potential ability to induce cardio ...
Myocardial infarction
Myocardial infarction (MI) or acute myocardial infarction (AMI), commonly known as a heart attack, occurs when blood flow stops to a part of the heart causing damage to the heart muscle. The most common symptom is chest pain or discomfort which may travel into the shoulder, arm, back, neck, or jaw. Often it is in the center or left side of the chest and lasts for more than a few minutes. The discomfort may occasionally feel like heartburn. Other symptoms may include shortness of breath, nausea, feeling faint, a cold sweat, or feeling tired. About 30% of people have atypical symptoms, with women more likely than men to present atypically. Among those over 75 years old, about 5% have had an MI with little or no history of symptoms. An MI may cause heart failure, an irregular heartbeat, or cardiac arrest.Most MIs occur due to coronary artery disease. Risk factors include high blood pressure, smoking, diabetes, lack of exercise, obesity, high blood cholesterol, poor diet, and excessive alcohol intake, among others. The mechanism of an MI often involves the rupture of an atherosclerotic plaque, leading to complete blockage of a coronary artery. MIs are less commonly caused by coronary artery spasms, which may be due to cocaine, significant emotional stress, and extreme cold, among others. A number of tests are useful to help with diagnosis, including electrocardiograms (ECGs), blood tests, and coronary angiography. An ECG may confirm an ST elevation MI if ST elevation is present. Commonly used blood tests include troponin and less often creatine kinase MB.Aspirin is an appropriate immediate treatment for a suspected MI. Nitroglycerin or opioids may be used to help with chest pain; however, they do not improve overall outcomes. Supplemental oxygen should be used in those with low oxygen levels or shortness of breath. In ST elevation MIs treatments which attempt to restore blood flow to the heart are typically recommended and include angioplasty, where the arteries are pushed open, or thrombolysis, where the blockage is removed using medications. People who have a non-ST elevation myocardial infarction (NSTEMI) are often managed with the blood thinner heparin, with the additional use angioplasty in those at high risk. In people with blockages of multiple coronary arteries and diabetes, bypass surgery (CABG) may be recommended rather than angioplasty. After an MI, lifestyle modifications, along with long term treatment with aspirin, beta blockers, and statins, are typically recommended.Worldwide, more than 3 million people have ST elevation MIs and 4 million have NSTEMIs each year. STEMIs occur about twice as often in men as women. About one million people have an MI each year in the United States. In the developed world the risk of death in those who have had an STEMI is about 10%. Rates of MI for a given age have decreased globally between 1990 and 2010.