Patent Ductus Arteriosus
... Blood flow within the fetal heart is very similar to blood flow in the heart after birth. However, within the fetal circulation there are two shunts that direct blood flow away from the lungs. Blood must bypass the lungs because prior to birth the fetal lungs are not fully developed. These shunts a ...
... Blood flow within the fetal heart is very similar to blood flow in the heart after birth. However, within the fetal circulation there are two shunts that direct blood flow away from the lungs. Blood must bypass the lungs because prior to birth the fetal lungs are not fully developed. These shunts a ...
Sheep Heart Dissection
... for three flaps of membrane. These membranes form the tricuspid valve between the right atrium and the right ventricle. The membranes are connected to flaps of muscle called the papillary muscles by tendons called the chordae tendinae or "heartstrings." This valve allows blood to enter the ventricle ...
... for three flaps of membrane. These membranes form the tricuspid valve between the right atrium and the right ventricle. The membranes are connected to flaps of muscle called the papillary muscles by tendons called the chordae tendinae or "heartstrings." This valve allows blood to enter the ventricle ...
Drugs for Hypertension Expanded Key Concepts
... High blood pressure is one of the most common diseases. (Management of hypertension is essential to the prevention of disorders such as stroke, heart attack and heart failure. Early treatment is essential as the long-term cardiovascular damage caused by hypertension may be irreversible if the diseas ...
... High blood pressure is one of the most common diseases. (Management of hypertension is essential to the prevention of disorders such as stroke, heart attack and heart failure. Early treatment is essential as the long-term cardiovascular damage caused by hypertension may be irreversible if the diseas ...
VITAL SIGNS - 龍紋天珠,STERLINGWEAR OF BOSTON
... Biot Respiration: Consists of somewhat irregular respirations varying in depth and interrupted by intervals of apnea. It is usually associated with severe and persistent increase intracranial pressure, respiratory compromise resulting from drug poisoning, or brain damage at the level of the medulla. ...
... Biot Respiration: Consists of somewhat irregular respirations varying in depth and interrupted by intervals of apnea. It is usually associated with severe and persistent increase intracranial pressure, respiratory compromise resulting from drug poisoning, or brain damage at the level of the medulla. ...
2-StLouis_ presentation
... • Only 35% of hypertensive patients on treatment are under control. • For those age 40-70, each increased increment of 20 mmHg in systolic BP or 10 mmHg in diastolic BP doubles the risk of CVD across the entire BP range of 115/75 to 185/115. ...
... • Only 35% of hypertensive patients on treatment are under control. • For those age 40-70, each increased increment of 20 mmHg in systolic BP or 10 mmHg in diastolic BP doubles the risk of CVD across the entire BP range of 115/75 to 185/115. ...
Causes of Left-Sided Heart Enlargement
... not appreciably enlarged. Because the hypertrophy is concentric, the outside contour of the heart may be minimally enlarged. The disease usually progresses to include eccentric hypertrophy of both the atrium and ventricle, resulting in obvious enlargement of both chambers. ...
... not appreciably enlarged. Because the hypertrophy is concentric, the outside contour of the heart may be minimally enlarged. The disease usually progresses to include eccentric hypertrophy of both the atrium and ventricle, resulting in obvious enlargement of both chambers. ...
Blood Flow The rate and distribution of blood flow through the
... Blood pressure is defined as the force exerted by the blood against the vessel wall. Blood pressure is highest in arteries and gradually decreases as it passes through arterioles, capillaries, venules and finally, veins. Blood pressure is also variable and can increase due to exercise where the card ...
... Blood pressure is defined as the force exerted by the blood against the vessel wall. Blood pressure is highest in arteries and gradually decreases as it passes through arterioles, capillaries, venules and finally, veins. Blood pressure is also variable and can increase due to exercise where the card ...
Lab Topic 28 Investigating Circulatory Systems General
... cells? What is the function of red blood cells? Why are they red? The most common leukoycytes are ____ which are instrumental in consuming cell debris and bacteria and ________ which are important to the immune response. Platelets represent another cellular element, or at least a cell fragment in bl ...
... cells? What is the function of red blood cells? Why are they red? The most common leukoycytes are ____ which are instrumental in consuming cell debris and bacteria and ________ which are important to the immune response. Platelets represent another cellular element, or at least a cell fragment in bl ...
Circulatory System
... vesicle of the cell), then moved out into tissue fluid by exocytosis (emptied out of the vesicle when it ‘joins’ the outside cell membrane). The balance between blood and osmotic pressure also moves materials. At the arterial end of a capillary, blood pressure is higher than osmotic pressure, so mat ...
... vesicle of the cell), then moved out into tissue fluid by exocytosis (emptied out of the vesicle when it ‘joins’ the outside cell membrane). The balance between blood and osmotic pressure also moves materials. At the arterial end of a capillary, blood pressure is higher than osmotic pressure, so mat ...
Arrhythmia - British Heart Foundation
... Join our fight for every heartbeat in the UK. Every pound raised, minute of your time and donation to our shops will help make a difference to people’s lives. ...
... Join our fight for every heartbeat in the UK. Every pound raised, minute of your time and donation to our shops will help make a difference to people’s lives. ...
Slide 11.2a
... The function of the cardiovascular system is to deliver oxygen and nutrients and to remove carbon dioxide and other waste products Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings ...
... The function of the cardiovascular system is to deliver oxygen and nutrients and to remove carbon dioxide and other waste products Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings ...
File
... In the lung, oxygen is delivered to red blood cells and carbon dioxide, a waste product of metabolism, is removed. The oxygenated blood returns to the left atrium where it travels through the mitral valve into the left ventricle. The systolic heartbeat also causes the left side of the heart to contr ...
... In the lung, oxygen is delivered to red blood cells and carbon dioxide, a waste product of metabolism, is removed. The oxygenated blood returns to the left atrium where it travels through the mitral valve into the left ventricle. The systolic heartbeat also causes the left side of the heart to contr ...
Snímek 1
... • First detected signs of defense after insult are local and generalized hemodynamic changes (vasodilatation, vasoconstriction). Regulation of hemodynamic changes • systemic sympathic-adrenal activation (changes in organ blood distribution of minute volume) • local microcirculatory changes - mediato ...
... • First detected signs of defense after insult are local and generalized hemodynamic changes (vasodilatation, vasoconstriction). Regulation of hemodynamic changes • systemic sympathic-adrenal activation (changes in organ blood distribution of minute volume) • local microcirculatory changes - mediato ...
General Features of the Heart
... relatively thin walls, and receives blood that is returning through two large veins: the superior vena cava and the inferior vena cava. ...
... relatively thin walls, and receives blood that is returning through two large veins: the superior vena cava and the inferior vena cava. ...
Total anomalous pulmonary venous return
... defect) which is helpful as it allows blood to reach the left ventricle for pumping around the body. ...
... defect) which is helpful as it allows blood to reach the left ventricle for pumping around the body. ...
4-CardiovascularSystem-Med
... o It is composed of the heart and blood vessels. o The heart is cone shaped, covered by pericardium and composed of four chambers. o The blood vessels are the arteries, veins and capillaries. o Arteries transport the blood from the heart. o The terminal branches of the arteries can anastomose with e ...
... o It is composed of the heart and blood vessels. o The heart is cone shaped, covered by pericardium and composed of four chambers. o The blood vessels are the arteries, veins and capillaries. o Arteries transport the blood from the heart. o The terminal branches of the arteries can anastomose with e ...
Long Distance Runner with Dilated Cardiomyopathy and Excellent
... dilatation and impaired systolic function. The present patient presented two risk factors for the development of dilated cardiomyopathy, family history (father and mother who died of sudden death before 40 years old) and infection by Chagas disease. Chagas disease is a parasitic disease transmitted ...
... dilatation and impaired systolic function. The present patient presented two risk factors for the development of dilated cardiomyopathy, family history (father and mother who died of sudden death before 40 years old) and infection by Chagas disease. Chagas disease is a parasitic disease transmitted ...
circulatory systems
... Birds, mammals and crocodiles are warm-blooded (endotherms) and thus require much greater rates of cellular respiration (thus more O2) to meet ...
... Birds, mammals and crocodiles are warm-blooded (endotherms) and thus require much greater rates of cellular respiration (thus more O2) to meet ...
Chap 23 — CV System, Part 1
... Birds, mammals and crocodiles are warm-blooded (endotherms) and thus require much greater rates of cellular respiration (thus more O2) to meet ...
... Birds, mammals and crocodiles are warm-blooded (endotherms) and thus require much greater rates of cellular respiration (thus more O2) to meet ...
Pig Heart Dissection
... right atrium into the right ventricle during diastole (period when the heart is relaxed). When the heart begins to contract (systole phase), ventricular pressure increases until it is greater than the pressure in the atrium causing the tricuspid to snap closed. ...
... right atrium into the right ventricle during diastole (period when the heart is relaxed). When the heart begins to contract (systole phase), ventricular pressure increases until it is greater than the pressure in the atrium causing the tricuspid to snap closed. ...
The Heart
... Exchange of oxygen and carbon dioxide takes place. Blood is pushed into the pulmonary arteries and into the left and right lungs. Deoxygenated blood flows into the right ventricle of the heart. Deoxygenated blood enters the right atrium of the heart. Oxygenated blood from the lungs flows to the left ...
... Exchange of oxygen and carbon dioxide takes place. Blood is pushed into the pulmonary arteries and into the left and right lungs. Deoxygenated blood flows into the right ventricle of the heart. Deoxygenated blood enters the right atrium of the heart. Oxygenated blood from the lungs flows to the left ...
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.