Electrical Activity in the Heart Model 1: The Excitation
... About 99% of the cardiac muscle fibers in oneʼs heart contract to pump blood. The other 1% are specialized cells called “pacemaker cells” that conduct electrical impulses and can even spontaneously generate action potentials. Although pacemaker cells in different regions of the heart have different ...
... About 99% of the cardiac muscle fibers in oneʼs heart contract to pump blood. The other 1% are specialized cells called “pacemaker cells” that conduct electrical impulses and can even spontaneously generate action potentials. Although pacemaker cells in different regions of the heart have different ...
Update on Percutaneous Mitral Valve Therapy
... “The MitraClip Clip Delivery System is indicated for the percutaneous reduction of significant symptomatic mitral regurgitation (MR ≥ 3+) due to primary abnormality of the mitral apparatus [degenerative MR] in patients who have been determined to be at prohibitive risk for mitral valve surgery by a ...
... “The MitraClip Clip Delivery System is indicated for the percutaneous reduction of significant symptomatic mitral regurgitation (MR ≥ 3+) due to primary abnormality of the mitral apparatus [degenerative MR] in patients who have been determined to be at prohibitive risk for mitral valve surgery by a ...
婦產部院際部際聯合討論會 April, 11, 2007
... One third of patients with TGA, the coronary artery anatomy is abnormal left circumflex coronary arising from the right coronary artery (22%) single right coronary artery (9.5%) single left coronary artery (3%) inverted origin of the coronary arteries (3%) ...
... One third of patients with TGA, the coronary artery anatomy is abnormal left circumflex coronary arising from the right coronary artery (22%) single right coronary artery (9.5%) single left coronary artery (3%) inverted origin of the coronary arteries (3%) ...
Workshop – EssayTwo
... the next morning to have a complete Tetralogy repair! We had never gone over the details of his surgery because we thought it would be when he was almost a year old so I didn’t even know what they were going to do to him. All I knew was they were going to cut open my son’s chest, pull apart his rib ...
... the next morning to have a complete Tetralogy repair! We had never gone over the details of his surgery because we thought it would be when he was almost a year old so I didn’t even know what they were going to do to him. All I knew was they were going to cut open my son’s chest, pull apart his rib ...
Pharmacologic and Nonpharmacologic Treatments of Ischemic
... effective in reducing the risk of death in patients with chronic HFrEF: bisoprolol and sustainedrelease metoprolol (succinate), which selectively block beta-1–receptors; and carvedilol, which blocks alpha-1–, beta-1–, and beta-2–receptors. • Beta blockers should be prescribed to all patients with st ...
... effective in reducing the risk of death in patients with chronic HFrEF: bisoprolol and sustainedrelease metoprolol (succinate), which selectively block beta-1–receptors; and carvedilol, which blocks alpha-1–, beta-1–, and beta-2–receptors. • Beta blockers should be prescribed to all patients with st ...
Transient Ischaemic Attack (TIA)
... every risk factor listed below to see how you can change your lifestyle: Smoking – Chemicals in tobacco damage arteries so try to cut down or stop smoking. High blood pressure – This damages the artery wall so get checked at least once a year and if you are prescribed medication make sure you ta ...
... every risk factor listed below to see how you can change your lifestyle: Smoking – Chemicals in tobacco damage arteries so try to cut down or stop smoking. High blood pressure – This damages the artery wall so get checked at least once a year and if you are prescribed medication make sure you ta ...
Heart Disease and Pregnancy
... usually apparent in childhood and offspring should continue to be screened well into adulthood, unless there is a known genetic marker that can exclude the inheritance. Fetal deaths have been reported. ...
... usually apparent in childhood and offspring should continue to be screened well into adulthood, unless there is a known genetic marker that can exclude the inheritance. Fetal deaths have been reported. ...
aortic valve opens.
... CO is the amount of blood pumped by each ventricle in one minute CO is the product of heart rate (HR) and stroke volume (SV) HR is the number of heart beats per minute SV is the amount of blood pumped out by a ventricle with each beat Cardiac reserve is the difference between resting and maximal CO ...
... CO is the amount of blood pumped by each ventricle in one minute CO is the product of heart rate (HR) and stroke volume (SV) HR is the number of heart beats per minute SV is the amount of blood pumped out by a ventricle with each beat Cardiac reserve is the difference between resting and maximal CO ...
outline25321
... (1) Increased blood viscosity and altered red blood cells (2) Tiredness, depression, vertigo, tinnitus (3) Associated with hypertension, angina, intermittent claudication b) Sickle cell disease (1) Genetic mutation changes hemoglobin so that the cells become more rigid and change shape ...
... (1) Increased blood viscosity and altered red blood cells (2) Tiredness, depression, vertigo, tinnitus (3) Associated with hypertension, angina, intermittent claudication b) Sickle cell disease (1) Genetic mutation changes hemoglobin so that the cells become more rigid and change shape ...
Brain and CranialNerves
... CO is the amount of blood pumped by each ventricle in one minute CO is the product of heart rate (HR) and stroke volume (SV) HR is the number of heart beats per minute SV is the amount of blood pumped out by a ventricle with each beat Cardiac reserve is the difference between resting and maximal CO ...
... CO is the amount of blood pumped by each ventricle in one minute CO is the product of heart rate (HR) and stroke volume (SV) HR is the number of heart beats per minute SV is the amount of blood pumped out by a ventricle with each beat Cardiac reserve is the difference between resting and maximal CO ...
The circulatory system The cardiovascular system consists of two
... blood through the capillary bed. 2. Here the exchange of O2, nutrients, and metabolic by products between the working tissue and blood take place. 3. If the lack of O2 or the accumulation of metabolites require high blood flow, smooth muscles that encircle the fine blood vessels remain relaxed, allo ...
... blood through the capillary bed. 2. Here the exchange of O2, nutrients, and metabolic by products between the working tissue and blood take place. 3. If the lack of O2 or the accumulation of metabolites require high blood flow, smooth muscles that encircle the fine blood vessels remain relaxed, allo ...
CARDIVASCULAR DRUGS
... Basic cardiovascular physiology and pathology depends on the control of heart rate, cardiac output, blood pressure, blood flow, ionic composition, RAAS, vascular endothelium, regulation of tissue perfusion, hypertension, dislipidaemias, atherosclerosis, blood clotting, ischaemic heart disease, cardi ...
... Basic cardiovascular physiology and pathology depends on the control of heart rate, cardiac output, blood pressure, blood flow, ionic composition, RAAS, vascular endothelium, regulation of tissue perfusion, hypertension, dislipidaemias, atherosclerosis, blood clotting, ischaemic heart disease, cardi ...
Cardiac 2010
... Coronary arteries will be repaired Hypertrophy of right heart should remodel within a few months when pressure in right side is reduced ...
... Coronary arteries will be repaired Hypertrophy of right heart should remodel within a few months when pressure in right side is reduced ...
Topic 6: Transport Take Home Quiz Name 1. Which chamber of the
... Which part of the brain has a role in the control of the heartbeat and how are messages passed from this part of the brain to the heart? Part of the brain ...
... Which part of the brain has a role in the control of the heartbeat and how are messages passed from this part of the brain to the heart? Part of the brain ...
I. Auscultatory Valve Area
... – In early diastole, the blood through into ventricle from atrium in failing myocardium, the ventricular wall tension is poor, produce vibration. Reflex that the ventricular function • Auscultation character of S3 gallop: – lower in pitch – After S2 – Best hear at apex – Loudest at the end of expi ...
... – In early diastole, the blood through into ventricle from atrium in failing myocardium, the ventricular wall tension is poor, produce vibration. Reflex that the ventricular function • Auscultation character of S3 gallop: – lower in pitch – After S2 – Best hear at apex – Loudest at the end of expi ...
Rapid Heart Rate - Milliken Animal Clinic
... • Pets with sustained, rapid heart rates (supraventricular tachycardia) or signs of congestive heart failure should be hospitalized until stable; CHF signs include cough; difficulty breathing (dyspnea); bluish discoloration of the skin and moist tissues (mucous membranes) of the body caused by inade ...
... • Pets with sustained, rapid heart rates (supraventricular tachycardia) or signs of congestive heart failure should be hospitalized until stable; CHF signs include cough; difficulty breathing (dyspnea); bluish discoloration of the skin and moist tissues (mucous membranes) of the body caused by inade ...
rapid_heart_rate
... • Pets with sustained, rapid heart rates (supraventricular tachycardia) or signs of congestive heart failure should be hospitalized until stable; CHF signs include cough; difficulty breathing (dyspnea); bluish discoloration of the skin and moist tissues (mucous membranes) of the body caused by inade ...
... • Pets with sustained, rapid heart rates (supraventricular tachycardia) or signs of congestive heart failure should be hospitalized until stable; CHF signs include cough; difficulty breathing (dyspnea); bluish discoloration of the skin and moist tissues (mucous membranes) of the body caused by inade ...
Heart
... CAD is a serious medical problem that annually affects about 7 million people. Responsible for nearly three quarters of a million deaths in the United States each year, it is the leading cause of death for both men and woman. CAD is defined as the effects of accumulation of atherosclerotic plaques ( ...
... CAD is a serious medical problem that annually affects about 7 million people. Responsible for nearly three quarters of a million deaths in the United States each year, it is the leading cause of death for both men and woman. CAD is defined as the effects of accumulation of atherosclerotic plaques ( ...
expertessay5
... pumping blood to the lungs or around the body. These contractions are both spontaneous and myogenic, meaning that they will continue for a short time after the ...
... pumping blood to the lungs or around the body. These contractions are both spontaneous and myogenic, meaning that they will continue for a short time after the ...
ANPS 020 Black 01-24
... Begins with initiation of action potential at SA node Produces action potentials in cardiac muscle cells (contractile cardiac cells) of Atria Both Atria begin contracting = Atrial Systole Signal is transmitted through conducting system (conducting cardiac cells of AV node, Bundle branches, Purkinje ...
... Begins with initiation of action potential at SA node Produces action potentials in cardiac muscle cells (contractile cardiac cells) of Atria Both Atria begin contracting = Atrial Systole Signal is transmitted through conducting system (conducting cardiac cells of AV node, Bundle branches, Purkinje ...
Cardiovascular System
... • Located between the left ventricle and the aorta (the largest artery in the body). • Closes when the left ventricle is finished contracting and pushing blood into the aorta. • Prevents blood from flowing back into the left ...
... • Located between the left ventricle and the aorta (the largest artery in the body). • Closes when the left ventricle is finished contracting and pushing blood into the aorta. • Prevents blood from flowing back into the left ...
Contact: Kristi Bruno, , 773/750
... “Prompt medical care is needed in suspected cases of pulmonary embolism. Signs and symptoms of pulmonary embolism can include difficulty breathing, sharp chest pain that worsens after taking deep breaths, coughing up blood, light-headedness, and fainting. DVT and PE contribute to more than 100,000 d ...
... “Prompt medical care is needed in suspected cases of pulmonary embolism. Signs and symptoms of pulmonary embolism can include difficulty breathing, sharp chest pain that worsens after taking deep breaths, coughing up blood, light-headedness, and fainting. DVT and PE contribute to more than 100,000 d ...
ECG
... potential. For example, the ECG does not record a potential at all when the ventricular muscle is either completely depolarized or completely repolarized; both electrodes are viewing the same potential, so no difference in potential between the two electrodes is ...
... potential. For example, the ECG does not record a potential at all when the ventricular muscle is either completely depolarized or completely repolarized; both electrodes are viewing the same potential, so no difference in potential between the two electrodes is ...
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.