The Cardiac Cycle
... the intrinsic ability to contract without nervous stimulation, provided they have a supply of the raw materials for the production of ATP. In order for the heart beat to be regular, the contractions of the cardiac muscle cells must be controlled and co-ordinated. This is the function of a specialise ...
... the intrinsic ability to contract without nervous stimulation, provided they have a supply of the raw materials for the production of ATP. In order for the heart beat to be regular, the contractions of the cardiac muscle cells must be controlled and co-ordinated. This is the function of a specialise ...
Atrioventricular Valve Dysplasia
... • Heart murmur; with severe disease, may be able to feel vibrations caused by abnormal blood flow (known as “thrills”) when placing hand against the chest wall, or may hear a sequence of three heart sounds (known as a “gallop rhythm”) when listening to the heart with a stethoscope; heartbeat sounds ...
... • Heart murmur; with severe disease, may be able to feel vibrations caused by abnormal blood flow (known as “thrills”) when placing hand against the chest wall, or may hear a sequence of three heart sounds (known as a “gallop rhythm”) when listening to the heart with a stethoscope; heartbeat sounds ...
role of angiotensin converting enzyme (ace
... controlled study, applied to 12 218 patients with an average age of 65 years that monitored the revelation of long term effects (3-4 years) of perindopril in reducing cardiovascular events in patients with stable coronary disease, without apparent heart failure [31]. The results showed a risk reduct ...
... controlled study, applied to 12 218 patients with an average age of 65 years that monitored the revelation of long term effects (3-4 years) of perindopril in reducing cardiovascular events in patients with stable coronary disease, without apparent heart failure [31]. The results showed a risk reduct ...
The PQRSTs of ECGs
... represents the time it takes the sinus signal to reach the A/V node and go through the Bundle of His. The Q wave is the first negative deflection after the P wave and represents ventricular septal depolarization. The R wave is the first positive waveform after the Q wave which marks ventricular depo ...
... represents the time it takes the sinus signal to reach the A/V node and go through the Bundle of His. The Q wave is the first negative deflection after the P wave and represents ventricular septal depolarization. The R wave is the first positive waveform after the Q wave which marks ventricular depo ...
File
... • Hypertension can only be detected by having it checked from a health professional. Checks should occur at least once annually. • Hypertension is measured by a Sphygmomanometer, which records two readings: Systolic – ‘Is the highest pressure against the arteries as the heart pumps.’ Diastolic – ‘Is ...
... • Hypertension can only be detected by having it checked from a health professional. Checks should occur at least once annually. • Hypertension is measured by a Sphygmomanometer, which records two readings: Systolic – ‘Is the highest pressure against the arteries as the heart pumps.’ Diastolic – ‘Is ...
Physiology I – Concise Lecture Outline
... F. Transmission into cardiac muscle G. Depolarization pattern in the ventricles related to the cardiac conduction system ...
... F. Transmission into cardiac muscle G. Depolarization pattern in the ventricles related to the cardiac conduction system ...
The heart is responsible for generating the pressure that propels
... rest, both parasympathetic and sympathetic neurons are releasing neurotransmitters onto the heart, but the parasympathetic branch is dominant. During stress, exercise, and excessive heat the sympathetic influence is dominant. Hormones such as epinephrine (released by the adrenal medulla), thyroxine ...
... rest, both parasympathetic and sympathetic neurons are releasing neurotransmitters onto the heart, but the parasympathetic branch is dominant. During stress, exercise, and excessive heat the sympathetic influence is dominant. Hormones such as epinephrine (released by the adrenal medulla), thyroxine ...
WEEK 1 SUPPLEMENT HEART HEALTH
... that they can carry more oxygen and they are a biconcave shape (a bit like a doughnut) so that they can squeeze through tiny blood vessels. Red blood cells are the most common blood cell. In one drop there are about 500 million of them! B) The white blood cells are involved in the immune system, def ...
... that they can carry more oxygen and they are a biconcave shape (a bit like a doughnut) so that they can squeeze through tiny blood vessels. Red blood cells are the most common blood cell. In one drop there are about 500 million of them! B) The white blood cells are involved in the immune system, def ...
androgenic anabolic steroids induced dilated cardiomyopathy
... left-sided weakness, slurred speech and left facial droop. He had shortness of breath with activity and occasional palpatations for a few weeks prior to the admission. An initial CT scan of the brain did not show any acute process. He was given tPA upon arrival to the hospital. An echocardiogram sho ...
... left-sided weakness, slurred speech and left facial droop. He had shortness of breath with activity and occasional palpatations for a few weeks prior to the admission. An initial CT scan of the brain did not show any acute process. He was given tPA upon arrival to the hospital. An echocardiogram sho ...
In order to reach as many professionals as possible, GiM has also
... „Myokardhypertrophie“ (FOR 1054). The research group assembles 8 working groups of excellent scientists of Charité-Universitätsmedizin Berlin, the German Heart Institute Berlin (DHZB) and Max-Delbrück-Center for Molecular Medicine (MDC) and achieved successfully the second funding period. The main g ...
... „Myokardhypertrophie“ (FOR 1054). The research group assembles 8 working groups of excellent scientists of Charité-Universitätsmedizin Berlin, the German Heart Institute Berlin (DHZB) and Max-Delbrück-Center for Molecular Medicine (MDC) and achieved successfully the second funding period. The main g ...
Non-Atherosclerotic Arterial Obstructive disease
... – Carotid body: 1X1 mm, in adventitia at carotid bifurcation, a component of the autonomic nervous system that helps control arterial PH, blood gas level, and blood pressure. – A paraganglioma, low incidence of malignance, highly vascular. – Located most often between ECA and ICA. – Causes palpable ...
... – Carotid body: 1X1 mm, in adventitia at carotid bifurcation, a component of the autonomic nervous system that helps control arterial PH, blood gas level, and blood pressure. – A paraganglioma, low incidence of malignance, highly vascular. – Located most often between ECA and ICA. – Causes palpable ...
REQUEST FOR FINANCIAL ASSISTANCE
... Dr. Hanley has proposed to perform the major open heart surgery within the next 4 months, due to the above mentioned deterioration of the lung capacity and Cara’s general high risk health condition. He will combine the four or five major collaterals (MAPCAs) that Cara has into one single one (unifoc ...
... Dr. Hanley has proposed to perform the major open heart surgery within the next 4 months, due to the above mentioned deterioration of the lung capacity and Cara’s general high risk health condition. He will combine the four or five major collaterals (MAPCAs) that Cara has into one single one (unifoc ...
Obstetrics. Lecture 14 Ultrasound Evaluation of the Fetal Heart
... the hemoglobin in the blood; this is normal during exercise but when resting this is quite dangerous. Second, when the heart beats too rapidly, it may pump blood less efficiently as there is less time for the myocardium to relax between contractions. Third, the faster the heart beats, the more oxyge ...
... the hemoglobin in the blood; this is normal during exercise but when resting this is quite dangerous. Second, when the heart beats too rapidly, it may pump blood less efficiently as there is less time for the myocardium to relax between contractions. Third, the faster the heart beats, the more oxyge ...
Journal Club - NYU Langone Medical Center
... reports sudden sub-sternal chest pain at rest with associated diaphoresis, shortness of breath and a 30-second syncopal episode. • Pain was relieved with 3 sublingual nitroglycerin, but pain returned within a few minutes. An additional 3 sublingual nitroglycerin provided no relief. UNITED STATES DEP ...
... reports sudden sub-sternal chest pain at rest with associated diaphoresis, shortness of breath and a 30-second syncopal episode. • Pain was relieved with 3 sublingual nitroglycerin, but pain returned within a few minutes. An additional 3 sublingual nitroglycerin provided no relief. UNITED STATES DEP ...
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... 4. You have about 5 litres of blood in your body; when you donate blood you give up about half a litre. 5. Your heart is about the size of an apple. 6. Your heart pumps about 70 times a minute, which equates to over 100,000 times a day! 7. When exercising your heart-rate doubles to about 140 times a ...
... 4. You have about 5 litres of blood in your body; when you donate blood you give up about half a litre. 5. Your heart is about the size of an apple. 6. Your heart pumps about 70 times a minute, which equates to over 100,000 times a day! 7. When exercising your heart-rate doubles to about 140 times a ...
Diagnostic and Therapeutic Procedures
... standards document notes that when an exercise stress is performed, the number of metabolic equivalent tasks (METS) achieved, the nature of induced chest pain, the maximum amount of ST-segment depression, changes in heart rate and blood pressure, and other parameters should be recorded as structured ...
... standards document notes that when an exercise stress is performed, the number of metabolic equivalent tasks (METS) achieved, the nature of induced chest pain, the maximum amount of ST-segment depression, changes in heart rate and blood pressure, and other parameters should be recorded as structured ...
454 The Cardiovascular System tractions and relaxations of the atria
... decrease rapidly. Diastole starts when the ventricular pressures become lower than the atrial pressures. The pressure difference between the atria and the ventricles then opens the AV valves and blood flows into the relaxed ventricles. Because blood has accumulated in the atria during systole, the v ...
... decrease rapidly. Diastole starts when the ventricular pressures become lower than the atrial pressures. The pressure difference between the atria and the ventricles then opens the AV valves and blood flows into the relaxed ventricles. Because blood has accumulated in the atria during systole, the v ...
The Heart - USD Biology
... During diving, the pulmonary system is not required. When the animal dives, the heart rate decreases. Crocodilians have a valve called the founs in the aperture region of the pulmonary artery which, when closed, increases resistance in the pulmonary aorta. When the right ventricular pressure exceed ...
... During diving, the pulmonary system is not required. When the animal dives, the heart rate decreases. Crocodilians have a valve called the founs in the aperture region of the pulmonary artery which, when closed, increases resistance in the pulmonary aorta. When the right ventricular pressure exceed ...
INTRODUCTION TO SPORT SCIENCE
... pressure in the aorta and pulmonary artery the semilunar valves are forced open and the cusps are flattened against the arterial walls and blood flows past ...
... pressure in the aorta and pulmonary artery the semilunar valves are forced open and the cusps are flattened against the arterial walls and blood flows past ...
Tachycardia (Fast Heart Rhythm)
... Common causes of arrhythmias include stress, caffeine, tobacco, alcohol, diet pills, and cough and cold medicines. If your heart tissue is damaged as a result of acquired heart disease such as myocardial infarction (heart attack) or congenital heart disease you may also be at risk of developing arrh ...
... Common causes of arrhythmias include stress, caffeine, tobacco, alcohol, diet pills, and cough and cold medicines. If your heart tissue is damaged as a result of acquired heart disease such as myocardial infarction (heart attack) or congenital heart disease you may also be at risk of developing arrh ...
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... digestive system to cells. 2. Carries O2 from lungs to cells. 3. Carries waste products to the urinary system. 4. Carries CO2 from cells to lungs 5. Carries immune cells that help fight disease. ...
... digestive system to cells. 2. Carries O2 from lungs to cells. 3. Carries waste products to the urinary system. 4. Carries CO2 from cells to lungs 5. Carries immune cells that help fight disease. ...
Test 2 - spring 2005
... 25. The pressure that draws fluid into capillaries because of proteins in the blood is called: a. blood hydrostatic pressure b. interstitial fluid hydrostatic pressure c. blood osmotic pressure d. interstitial fluid osmotic pressure 26. If mean arterial pressure goes up: a. then cardiac output incr ...
... 25. The pressure that draws fluid into capillaries because of proteins in the blood is called: a. blood hydrostatic pressure b. interstitial fluid hydrostatic pressure c. blood osmotic pressure d. interstitial fluid osmotic pressure 26. If mean arterial pressure goes up: a. then cardiac output incr ...
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.