CIRCULATION
... HEARTS PUMPING RHYTHYM BY SETTING THE RATE AT WHICH ALL THE MUSCLE CELLS OF THE HEART CONTRACT • PACEMAKER GENERATES ELECTRICAL SIGNALS • SIGNALS SPREAD THROUGHOUT ATRIA; 0.1 SEC TO REACH AV (ATRIOVENTRICULAR) NODE • SPECIALIZED MUSCLE FIBERS RELAY SIGNALS AND CAUSE VENTRICLE CONTRACTION THAT PUMPS ...
... HEARTS PUMPING RHYTHYM BY SETTING THE RATE AT WHICH ALL THE MUSCLE CELLS OF THE HEART CONTRACT • PACEMAKER GENERATES ELECTRICAL SIGNALS • SIGNALS SPREAD THROUGHOUT ATRIA; 0.1 SEC TO REACH AV (ATRIOVENTRICULAR) NODE • SPECIALIZED MUSCLE FIBERS RELAY SIGNALS AND CAUSE VENTRICLE CONTRACTION THAT PUMPS ...
Cardiac Resynchronization Therapy
... pacing The NYHA functional status and ejection fraction were measured after a 3 month trial of optimal medical therapy NOTE to provider: Optimal medical therapy, now referred to as “Guideline-directed medical therapy” (GDMT), may include use of the following medications either individually or in com ...
... pacing The NYHA functional status and ejection fraction were measured after a 3 month trial of optimal medical therapy NOTE to provider: Optimal medical therapy, now referred to as “Guideline-directed medical therapy” (GDMT), may include use of the following medications either individually or in com ...
The Cardiovascular System: Blood
... – Sympathetic HR & force of contraction – Parasympathetic HR ...
... – Sympathetic HR & force of contraction – Parasympathetic HR ...
Circulatory System
... • Lack of iron in diet or poor absorption ability Treatment/Prevention • Eat iron rich foods or take iron supplement (pill) ...
... • Lack of iron in diet or poor absorption ability Treatment/Prevention • Eat iron rich foods or take iron supplement (pill) ...
Blood vessels - INAYA Medical College
... Hormones: Adrenaline secreted by the adrenal gland during sympathetic nervous system activation ….. ↑ HR Ions: Balance between intracellular & extracellular ions must be maintained for normal heart function ...
... Hormones: Adrenaline secreted by the adrenal gland during sympathetic nervous system activation ….. ↑ HR Ions: Balance between intracellular & extracellular ions must be maintained for normal heart function ...
CHAPTER 23 Circulation
... • The force that blood exerts against the walls of your blood vessels is called blood pressure – Blood pressure is the main force driving the blood from the heart to the capillary beds – A pulse is the rhythmic stretching of the arteries caused by the pressure of blood forced into the arteries durin ...
... • The force that blood exerts against the walls of your blood vessels is called blood pressure – Blood pressure is the main force driving the blood from the heart to the capillary beds – A pulse is the rhythmic stretching of the arteries caused by the pressure of blood forced into the arteries durin ...
A Look Into Congestive Heart Failure
... • Beta-blockers stop the sympathetic nervous system from activating. • This will prevent the release of catecholamines, which in turn will reduce heart rate, blood pressure, and contractility. ...
... • Beta-blockers stop the sympathetic nervous system from activating. • This will prevent the release of catecholamines, which in turn will reduce heart rate, blood pressure, and contractility. ...
GCE AS/A level 1661/01-A APPLIED SCIENCE
... statins, she said, people with cardiovascular risks should eat a Mediterranean diet, rich in olive oil, fruit, vegetables, fish and nuts. She pointed to a recent study that showed that adopting a Mediterranean diet after a heart attack is three times more effective in preventing further illness than ...
... statins, she said, people with cardiovascular risks should eat a Mediterranean diet, rich in olive oil, fruit, vegetables, fish and nuts. She pointed to a recent study that showed that adopting a Mediterranean diet after a heart attack is three times more effective in preventing further illness than ...
Hemodynamics
... Preload increases to improve contractility (increased CO) Heart rate increase to improve CO (sympathetic stimulation) Afterload (resistance) constriction of the vessels to improve BP and blood flow Autoregulation of individual organs ...
... Preload increases to improve contractility (increased CO) Heart rate increase to improve CO (sympathetic stimulation) Afterload (resistance) constriction of the vessels to improve BP and blood flow Autoregulation of individual organs ...
The Human Cardiovascular System
... • Optimal blood pressure for adults is below 120 systolic and below 80 diastolic. • High blood pressure is persistent systolic blood pressure higher than 140 and/or diastolic blood pressure higher than 90. – It is also called hypertension. ...
... • Optimal blood pressure for adults is below 120 systolic and below 80 diastolic. • High blood pressure is persistent systolic blood pressure higher than 140 and/or diastolic blood pressure higher than 90. – It is also called hypertension. ...
cardiac cycle, ECG presentation
... Heart Conduction System Intrinsic Conduction (conduction from within) Heart contractions occur independently of the nervous system. Cardiac muscle fibers connected in 2 networks: 1) in atrial walls, 2) in ventricular walls. When any part of a network is stimulated, all fibers in it contract as ...
... Heart Conduction System Intrinsic Conduction (conduction from within) Heart contractions occur independently of the nervous system. Cardiac muscle fibers connected in 2 networks: 1) in atrial walls, 2) in ventricular walls. When any part of a network is stimulated, all fibers in it contract as ...
Unit 2 The Circulatory System and The Lymphatic System
... • Where materials are exchanged between blood and body’s cells. • Diffusion- when particles move from high to low concentration. ...
... • Where materials are exchanged between blood and body’s cells. • Diffusion- when particles move from high to low concentration. ...
UNIT 13 STUDY GUIDE KEY CARDIOVASCULAR SYSTEM: THE
... c. Valvular insufficiency—one or more cusps are too short to close the valve and blood can flow the wrong way d. Mitral valve prolapse—one or more cusps just do not work correctly and the valve does not close properly and blood can flow the wrong way 16. How does hypertension cause more atherosclero ...
... c. Valvular insufficiency—one or more cusps are too short to close the valve and blood can flow the wrong way d. Mitral valve prolapse—one or more cusps just do not work correctly and the valve does not close properly and blood can flow the wrong way 16. How does hypertension cause more atherosclero ...
Circulatory System
... All the blood vessels in the body joined end to end would stretch 62,000 miles or two and a half times around the earth. The heart circulates the body’s supply about 1,000 times each day. The heart pumps the equivalent of 5,000 to 6,000 quarts of blood each day. ...
... All the blood vessels in the body joined end to end would stretch 62,000 miles or two and a half times around the earth. The heart circulates the body’s supply about 1,000 times each day. The heart pumps the equivalent of 5,000 to 6,000 quarts of blood each day. ...
... • Blood exits the ventricle into an artery – Aorta: blood exits the left ventricle which delivers blood into systemic circulation. – Pulmonary trunk: de-oxygenated blood is carried to the lungs (pulmonary circulation) • Arteries become more numerous and smaller in diameter as the get further from th ...
Pregnancy and Heart Disease
... use and superior bioavailability Deaths have been reported with its use, however, usually associated with maternal ...
... use and superior bioavailability Deaths have been reported with its use, however, usually associated with maternal ...
Cardiovascular Endurance
... blood to the muscles tissue for repair and rebuilding. 8. Lower blood pressure & blood lipids - reduces major risk factor for stroke & coronary heart disease - lower levels of fats (such as cholesterol and triglycerides) ...
... blood to the muscles tissue for repair and rebuilding. 8. Lower blood pressure & blood lipids - reduces major risk factor for stroke & coronary heart disease - lower levels of fats (such as cholesterol and triglycerides) ...
Role of the Autonomic Nervous System in Mild
... returned to the normal range. This occurred through normalization of both heart rate and stroke volume. Heart rate decreased to a greater degree after propranolol in borderline hypertensive patients than in the normal subjects. This is presumed to indicate the existence of increased sympathetic chro ...
... returned to the normal range. This occurred through normalization of both heart rate and stroke volume. Heart rate decreased to a greater degree after propranolol in borderline hypertensive patients than in the normal subjects. This is presumed to indicate the existence of increased sympathetic chro ...
Asymptomatic coarctation in an adult female 1.Dr.P.Mohamed
... Medical clinic. A 26 year old female was referred from Primary care centre to our medical clinic for management of hypertension. She presented to primary care centre with abscess of the axilla and was found to be hypertensive. She did not have any other symptoms. Clinical examination showed moderate ...
... Medical clinic. A 26 year old female was referred from Primary care centre to our medical clinic for management of hypertension. She presented to primary care centre with abscess of the axilla and was found to be hypertensive. She did not have any other symptoms. Clinical examination showed moderate ...
Principles of cardiovascular measurement I and II
... • Directed parallel to flow of blood eg down suprasternal notch into ascending aorta • Wavelength of sound is altered as it is reflects off moving red blood cells • Change in pitch indicates velocity of red blood cells • Estimate of aortic cross-section gives blood flow ie cardiac output • Pseudo-co ...
... • Directed parallel to flow of blood eg down suprasternal notch into ascending aorta • Wavelength of sound is altered as it is reflects off moving red blood cells • Change in pitch indicates velocity of red blood cells • Estimate of aortic cross-section gives blood flow ie cardiac output • Pseudo-co ...
Cardiophysiology - Sinoe Medical Association
... Contractility - cardiac cell contractile force due to factors other than EDV Increase in contractility comes from: ▪ Increased sympathetic stimuli ▪ Certain hormones ▪ Ca2+ and some drugs Agents/factors that decrease contractility: ▪ Acidosis ▪ Increased extracellular K+ ▪ Calcium channel blocke ...
... Contractility - cardiac cell contractile force due to factors other than EDV Increase in contractility comes from: ▪ Increased sympathetic stimuli ▪ Certain hormones ▪ Ca2+ and some drugs Agents/factors that decrease contractility: ▪ Acidosis ▪ Increased extracellular K+ ▪ Calcium channel blocke ...
Anatomy of the Cardiovascular System
... • Causes layers of visceral and parietal layers of the serous pericardium to rub, causes severe chest pain • Fluid, pus, or blood may accumulate in the space between the two pericardial layers and impair pumping of the heart (pericardial effusion)— may lead to compression of the heart nown as cardia ...
... • Causes layers of visceral and parietal layers of the serous pericardium to rub, causes severe chest pain • Fluid, pus, or blood may accumulate in the space between the two pericardial layers and impair pumping of the heart (pericardial effusion)— may lead to compression of the heart nown as cardia ...
Introduction to cardiovascular physiology
... are called inotropes; those increasing rate and force of contractility have a positive inotropic action, those that decrease contractility have a negative inotropic action. The most important determinant of contractility is the sympathetic nervous system. It acts directly, or via the release of cate ...
... are called inotropes; those increasing rate and force of contractility have a positive inotropic action, those that decrease contractility have a negative inotropic action. The most important determinant of contractility is the sympathetic nervous system. It acts directly, or via the release of cate ...
Cardio IQ Advanced Cardiovascular Tests
... detect what HDL (good) and LDL (bad) cholesterol are, so hopefully you can reduce your risk of a possible cardiac event such as a heart attack. Nearly half of all heart attack patients were found to have no prior risk which would indicate they were heading toward an attack. Quest Diagnostics offers ...
... detect what HDL (good) and LDL (bad) cholesterol are, so hopefully you can reduce your risk of a possible cardiac event such as a heart attack. Nearly half of all heart attack patients were found to have no prior risk which would indicate they were heading toward an attack. Quest Diagnostics offers ...
Antihypertensive drug
Antihypertensives are a class of drugs that are used to treat hypertension (high blood pressure). Antihypertensive therapy seeks to prevent the complications of high blood pressure, such as stroke and myocardial infarction. Evidence suggests that reduction of the blood pressure by 5 mmHg can decrease the risk of stroke by 34%, of ischaemic heart disease by 21%, and reduce the likelihood of dementia, heart failure, and mortality from cardiovascular disease. There are many classes of antihypertensives, which lower blood pressure by different means. Among the most important and most widely used drugs are thiazide diuretics, calcium channel blockers, ACE inhibitors, angiotensin II receptor antagonists (ARBs), and beta blockers.Which type of medication to use initially for hypertension has been the subject of several large studies and resulting national guidelines. The fundamental goal of treatment should be the prevention of the important endpoints of hypertension, such as heart attack, stroke and heart failure. Patient age, associated clinical conditions and end-organ damage also play a part in determining dosage and type of medication administered. The several classes of antihypertensives differ in side effect profiles, ability to prevent endpoints, and cost. The choice of more expensive agents, where cheaper ones would be equally effective, may have negative impacts on national healthcare budgets. As of 2009, the best available evidence favors the thiazide diuretics as the first-line treatment of choice for high blood pressure when drugs are necessary. Although clinical evidence shows calcium channel blockers and thiazide-type diuretics are preferred first-line treatments for most people (from both efficacy and cost points of view), an ACE inhibitor is recommended by NICE in the UK for those under 55 years old.