Modeling the Action Potential in a Cell
... • As an electrical circuit – Capacitance (the membrane’s ability to store a charge) – Current (the ions flowing through the membrane) – Resistance to (conductance of) Na+, K+, and other ions – Equilibrium potential for each type of ion ...
... • As an electrical circuit – Capacitance (the membrane’s ability to store a charge) – Current (the ions flowing through the membrane) – Resistance to (conductance of) Na+, K+, and other ions – Equilibrium potential for each type of ion ...
Aborted Sudden Cardiac Death Associated with Short QT Syndrome
... consciousness recovered to a normal level. He underwent coronary angiography, ventriculography, and a myocardial biopsy for further examination of the etiology of his pathological status. The biopsy specimen was obtained from the right ventricular septum. There was no evidence of abnormal coronary a ...
... consciousness recovered to a normal level. He underwent coronary angiography, ventriculography, and a myocardial biopsy for further examination of the etiology of his pathological status. The biopsy specimen was obtained from the right ventricular septum. There was no evidence of abnormal coronary a ...
Anatomy Review the Heart
... • The heart consists of two side by side pumps. The blood vessels are the "pipes" that carry blood throughout the body. The right atrium and right ventricle pump oxygen-poor, CO2-rich blood to the lungs. In the lungs the blood receives oxygen, eliminates carbon dioxide, and travels back to the left ...
... • The heart consists of two side by side pumps. The blood vessels are the "pipes" that carry blood throughout the body. The right atrium and right ventricle pump oxygen-poor, CO2-rich blood to the lungs. In the lungs the blood receives oxygen, eliminates carbon dioxide, and travels back to the left ...
PR Intervals (Fast and Easy ECGs, Shade / Wesley)
... • 1st-degree AV heart block is the most common cause of longer PR intervals. • In wandering atrial pacemaker the pacemaker site moves from beat to beat causing the P’ waves to appear different and the P’R intervals to vary. ...
... • 1st-degree AV heart block is the most common cause of longer PR intervals. • In wandering atrial pacemaker the pacemaker site moves from beat to beat causing the P’ waves to appear different and the P’R intervals to vary. ...
Cardiopulmonary System
... • The atria and ventricles are separated by a wall of tissue called the septum. • The heart has three layers that make it up: the endocardium (inside the heart); the myocardium (middle, muscular layer); and the pericardium, a sac that surrounds the heart. • The pericardium has two layers; the viscer ...
... • The atria and ventricles are separated by a wall of tissue called the septum. • The heart has three layers that make it up: the endocardium (inside the heart); the myocardium (middle, muscular layer); and the pericardium, a sac that surrounds the heart. • The pericardium has two layers; the viscer ...
Familial Subvalvular Aortic Stenosis in Rottweilers
... Auscultation Screening • Auscultation screening is a good first step – Dogs that pass are unlikely to have SAS – Dogs that fail may or may not have SAS – Echocardiography can help differentiate dogs with functional murmurs from those with SAS ...
... Auscultation Screening • Auscultation screening is a good first step – Dogs that pass are unlikely to have SAS – Dogs that fail may or may not have SAS – Echocardiography can help differentiate dogs with functional murmurs from those with SAS ...
Position of the Heart and the
... sternal plate and before intrathoracic contents were disturbed, the pericardium was carefully opened and a thin, sharply pointed metal spear was gently thrust anterior-posteriorly through the heart, perpendicular to the autopsy table. Then, another spear was passed from left to right through the che ...
... sternal plate and before intrathoracic contents were disturbed, the pericardium was carefully opened and a thin, sharply pointed metal spear was gently thrust anterior-posteriorly through the heart, perpendicular to the autopsy table. Then, another spear was passed from left to right through the che ...
Cardiopulmonary System
... • The atria and ventricles are separated by a wall of tissue called the septum. • The heart has three layers that make it up: the endocardium (inside the heart); the myocardium (middle, muscular layer); and the pericardium, a sac that surrounds the heart. • The pericardium has two layers; the viscer ...
... • The atria and ventricles are separated by a wall of tissue called the septum. • The heart has three layers that make it up: the endocardium (inside the heart); the myocardium (middle, muscular layer); and the pericardium, a sac that surrounds the heart. • The pericardium has two layers; the viscer ...
Atherosclerosis
... Pericarditis and cardiac tamponade Pericarditis is the inflammation of pericardium which can case fluid accumulation in the pericardial space Cardiac tamponade is an urgent condition characterized by huge amount of fluid accumulation within the pericardial space , and case cardiac diastolic dysfunc ...
... Pericarditis and cardiac tamponade Pericarditis is the inflammation of pericardium which can case fluid accumulation in the pericardial space Cardiac tamponade is an urgent condition characterized by huge amount of fluid accumulation within the pericardial space , and case cardiac diastolic dysfunc ...
Document
... • A physiological measure of how much oxygen the body uses at rest or during activity • Increases in proportion to intensity of exercise/physical activity and will plateau when maximal ability for oxygen delivery is reached, which is maximal oxygen consumption (V·O2 max). • Maximal oxygen consumptio ...
... • A physiological measure of how much oxygen the body uses at rest or during activity • Increases in proportion to intensity of exercise/physical activity and will plateau when maximal ability for oxygen delivery is reached, which is maximal oxygen consumption (V·O2 max). • Maximal oxygen consumptio ...
Lourdes Cardiology Today 2015
... Afib is the most commonly occurring cardiac dysrhythmia, affecting millions in the United States. The lifetime risk over age 40 is approximately 25 percent. Incidence of Afib may double between 2010 and 2030, due partly to better surveillance, an aging population and ability to treat related cardiac ...
... Afib is the most commonly occurring cardiac dysrhythmia, affecting millions in the United States. The lifetime risk over age 40 is approximately 25 percent. Incidence of Afib may double between 2010 and 2030, due partly to better surveillance, an aging population and ability to treat related cardiac ...
Left ventricular systolic function assessment in patients with dilated
... is able to evaluate wall motion of the ventricles and other physical characteristics of the heart under stress. Echocardiography can also be used to detect tumours or clots within the heart and other congenital abnormalities. It is completely non contact, therefore eliminates any pain or risk during ...
... is able to evaluate wall motion of the ventricles and other physical characteristics of the heart under stress. Echocardiography can also be used to detect tumours or clots within the heart and other congenital abnormalities. It is completely non contact, therefore eliminates any pain or risk during ...
vPad A1 Performance Notes
... Neonatal Mode: ECG QRS width is reduced from 80ms to 40ms. Artifact: 50Hz, 60Hz, muscle, baseline, respiration Axis Deviation: Normal , horizontal, and vertical. ECG Performance Testing: Square Wave: 0.125, 2, 2.5Hz Triangle Wave: 0.125, 2, 2.5Hz Pulse: 30, 60 BPM with 60ms pulse Sine Waves: 0.05 - ...
... Neonatal Mode: ECG QRS width is reduced from 80ms to 40ms. Artifact: 50Hz, 60Hz, muscle, baseline, respiration Axis Deviation: Normal , horizontal, and vertical. ECG Performance Testing: Square Wave: 0.125, 2, 2.5Hz Triangle Wave: 0.125, 2, 2.5Hz Pulse: 30, 60 BPM with 60ms pulse Sine Waves: 0.05 - ...
Chapter 9 The Circulatory System
... e. Red marrow replaced by yellow marrow; new blood cell formation may decrease ...
... e. Red marrow replaced by yellow marrow; new blood cell formation may decrease ...
Heart Murmur Black and White - Seattle Veterinary Specialists
... the heart is enlarged which will let your vet know if the murmur is due to significant heart disease. If the images from the chest x-ray are unclear or if the heart appears significantly enlarged, they may recommend an echocardiogram and consultation with a cardiologist. • Electrocardiogram (ECG). I ...
... the heart is enlarged which will let your vet know if the murmur is due to significant heart disease. If the images from the chest x-ray are unclear or if the heart appears significantly enlarged, they may recommend an echocardiogram and consultation with a cardiologist. • Electrocardiogram (ECG). I ...
Heart Murmur color - Seattle Veterinary Specialists
... the heart is enlarged which will let your vet know if the murmur is due to significant heart disease. If the images from the chest x-ray are unclear or if the heart appears significantly enlarged, they may recommend an echocardiogram and consultation with a cardiologist. • Electrocardiogram (ECG). I ...
... the heart is enlarged which will let your vet know if the murmur is due to significant heart disease. If the images from the chest x-ray are unclear or if the heart appears significantly enlarged, they may recommend an echocardiogram and consultation with a cardiologist. • Electrocardiogram (ECG). I ...
Cardiac Defects: Ventricular Septal Defect
... • heart murmur—the heart sounds abnormal when a doctor listens with a stethoscope. How is a VSD diagnosed? VSD might be diagnosed before birth with a fetal echocardiogram. In this case, your baby’s providers will prepare a plan for care after birth. In some cases, a VSD might be diagnosed soon afte ...
... • heart murmur—the heart sounds abnormal when a doctor listens with a stethoscope. How is a VSD diagnosed? VSD might be diagnosed before birth with a fetal echocardiogram. In this case, your baby’s providers will prepare a plan for care after birth. In some cases, a VSD might be diagnosed soon afte ...
Sheep Heart Dissection
... pointed toward you. The anterior side of the heart should be on your left and the posterior side of the heart should be on your right. Draw a dotted red line bisecting the anterior and posterior sides of the heart. Have Mrs. Dunigan check to make sure that you have labeled this correctly. 7. Flip th ...
... pointed toward you. The anterior side of the heart should be on your left and the posterior side of the heart should be on your right. Draw a dotted red line bisecting the anterior and posterior sides of the heart. Have Mrs. Dunigan check to make sure that you have labeled this correctly. 7. Flip th ...
The Heart
... which is called the stroke volume output. The remaining volume in each ventricle, about 40 to 50 ml, is called the end-systolic volume. One complete heartbeat is composed of one systole and one diastole and lasts about 0.8 seconds. ...
... which is called the stroke volume output. The remaining volume in each ventricle, about 40 to 50 ml, is called the end-systolic volume. One complete heartbeat is composed of one systole and one diastole and lasts about 0.8 seconds. ...
aortopulmonary window: a rare congenital heart disease acebdf
... and additional type to this classification – type IV for intermediate defect with adequate superior and inferior rims. Aortopulmonary window produces a large and usually unrestricted leftto-right shunt that worsens as pulmonary vascular resistance falls during the newborn period. Con gestive heart ...
... and additional type to this classification – type IV for intermediate defect with adequate superior and inferior rims. Aortopulmonary window produces a large and usually unrestricted leftto-right shunt that worsens as pulmonary vascular resistance falls during the newborn period. Con gestive heart ...
Analog Computer Model of the Vectoreardiogram
... summing amplifiers then summed all the 20 individual X. Y, and Z axis voltages. A record of each of the three usual projections (horizontal, frontal, and sagittal) was obtained by proper selection of the summed X, Y, and Z voltages. An ink-writing X-Y plotter was used instead of the more familiar os ...
... summing amplifiers then summed all the 20 individual X. Y, and Z axis voltages. A record of each of the three usual projections (horizontal, frontal, and sagittal) was obtained by proper selection of the summed X, Y, and Z voltages. An ink-writing X-Y plotter was used instead of the more familiar os ...
Southwestern Illinois EMS System
... • Prevent backflow of blood from aorta, pulmonary arteries into ventricles • Close as ventricular contraction ends, pressure in pulmonary artery, aorta exceeds that of ventricles • Chordae tendinae, connective tissue, attached to AV ...
... • Prevent backflow of blood from aorta, pulmonary arteries into ventricles • Close as ventricular contraction ends, pressure in pulmonary artery, aorta exceeds that of ventricles • Chordae tendinae, connective tissue, attached to AV ...
Pediatric and Congenital Heart Surgery Outcomes
... Penn State Hershey Children’s Hospital Heart Surgery program • Two pediatric and congenital heart surgeons who are both board-certified in cardiothoracic and congenital heart surgery, with a total of thirty-nine years of experience. • Dedicated pediatric cardiac operating room and four pediatric car ...
... Penn State Hershey Children’s Hospital Heart Surgery program • Two pediatric and congenital heart surgeons who are both board-certified in cardiothoracic and congenital heart surgery, with a total of thirty-nine years of experience. • Dedicated pediatric cardiac operating room and four pediatric car ...
Core Clinical Problem 52: Murmur Summary ΔΔ (Index Conditions
... o Fixed widely split second heart sound o In AVSD- pansystolic apical murmur (AV valve regurgitation) Investigations CXR: Cardiomegaly, enlarged pulmonary arteries, increased pulmonary vascular markings. ECG: Secondum: Partial right bundle branch block, right axis deviation Partial AVSD: Left ‘super ...
... o Fixed widely split second heart sound o In AVSD- pansystolic apical murmur (AV valve regurgitation) Investigations CXR: Cardiomegaly, enlarged pulmonary arteries, increased pulmonary vascular markings. ECG: Secondum: Partial right bundle branch block, right axis deviation Partial AVSD: Left ‘super ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.