Chapter 18: Cardiovascular System (Anatomy)
... Have unstable resting potentials called pacemaker potentials ...
... Have unstable resting potentials called pacemaker potentials ...
Chapter 18: Cardiovascular System
... Have unstable resting potentials called pacemaker potentials ...
... Have unstable resting potentials called pacemaker potentials ...
Heart 2
... – A deflection above or below the flat line means that there is an electrical signal of some kind – A positive (up) or negative (down) deflection is called a wave – The height of the wave reflects strength of the electrical signal ...
... – A deflection above or below the flat line means that there is an electrical signal of some kind – A positive (up) or negative (down) deflection is called a wave – The height of the wave reflects strength of the electrical signal ...
Chapter 18: Cardiovascular System (Anatomy)
... Have unstable resting potentials called pacemaker potentials ...
... Have unstable resting potentials called pacemaker potentials ...
PDA - Jantung Sehat
... • The increased pulmonary blood flow causes a mid systolic pulmonary flow murmur. • If PH has developed reduction of the leftto-right shunt, the pulmonary flow murmur disappears; there is a loud pulmonary component to the second heart sound • If Eisenmenger’s syndrome occurs centrally cyanosed, ...
... • The increased pulmonary blood flow causes a mid systolic pulmonary flow murmur. • If PH has developed reduction of the leftto-right shunt, the pulmonary flow murmur disappears; there is a loud pulmonary component to the second heart sound • If Eisenmenger’s syndrome occurs centrally cyanosed, ...
Body Organization: Working Together
... Remember from the skeletal system that your heart is made of special involuntary muscle. It is called cardiac muscle. The muscle in your heart works to pump you blood. Your heart is actually two pumps that work together to move your blood all around your body. One pump moves the blood from the upper ...
... Remember from the skeletal system that your heart is made of special involuntary muscle. It is called cardiac muscle. The muscle in your heart works to pump you blood. Your heart is actually two pumps that work together to move your blood all around your body. One pump moves the blood from the upper ...
1-Anatomy of the Heart
... Nerve supply of the heart o Autonomic Supply: by sympathetic & parasympathetic fibers via the cardiac plexus situated below arch of aorta. o The sympathetic fibres arise from the cervical & upper thoracic (1, 2, 3, 4) ganglia of sympathetic trunks. o The parasympathetic fibres arise from the vagus ...
... Nerve supply of the heart o Autonomic Supply: by sympathetic & parasympathetic fibers via the cardiac plexus situated below arch of aorta. o The sympathetic fibres arise from the cervical & upper thoracic (1, 2, 3, 4) ganglia of sympathetic trunks. o The parasympathetic fibres arise from the vagus ...
Autonomic Reactivity With Altered Thyroid Status
... playing on important role in the regulation of the function of sino-atrial node, the systolic and diastolic function of the myocardium and the peripheral resistance. They act directly by influence on protein-synthesis, the properties of cell membranes and indirectly by interactions with autonomic ne ...
... playing on important role in the regulation of the function of sino-atrial node, the systolic and diastolic function of the myocardium and the peripheral resistance. They act directly by influence on protein-synthesis, the properties of cell membranes and indirectly by interactions with autonomic ne ...
Ventricular Assist Devices
... and effective in children. Publications have reported positive outcomes for children using VADs as a bridge to transplantation. Using the UNOS database, Davies, et al. (2008) reported on use of VADs in pediatric patients undergoing heart transplantation. Their analysis concluded that pediatric patie ...
... and effective in children. Publications have reported positive outcomes for children using VADs as a bridge to transplantation. Using the UNOS database, Davies, et al. (2008) reported on use of VADs in pediatric patients undergoing heart transplantation. Their analysis concluded that pediatric patie ...
APPROACH TO AN INFANT WITH CYANOSIS –
... Cyanosis is the bluish discoloration of skin and mucus membranes of tongue, lips, buccal mucosa and conjunctiva resulting from deoxygenation of capillary blood. The term cyanosis has origin from a Greek word ‘Kaunosis’ meaning blueness. Perhaps the first description of a cyanotic heart disease comes ...
... Cyanosis is the bluish discoloration of skin and mucus membranes of tongue, lips, buccal mucosa and conjunctiva resulting from deoxygenation of capillary blood. The term cyanosis has origin from a Greek word ‘Kaunosis’ meaning blueness. Perhaps the first description of a cyanotic heart disease comes ...
Effect of Hyperoxia on Left Ventricular Function and Filling
... comparisons of baseline characteristics were made using a Student’s t test. Within-group comparisons of the responses to hyperoxia (control, hyperoxia, and recovery) were made with a one-way repeated-measures analysis of variance. The StudentNewman-Keuls test was used post hoc to identify significan ...
... comparisons of baseline characteristics were made using a Student’s t test. Within-group comparisons of the responses to hyperoxia (control, hyperoxia, and recovery) were made with a one-way repeated-measures analysis of variance. The StudentNewman-Keuls test was used post hoc to identify significan ...
Cardiovascular Physiology and Pharmacology
... Perioperative Medicine, Barts Heart Centre St. Bartholomew’s Hospital, Barts Healt NHS Queen Mary University of London and Department of Anaesthesiology and Intensive Care University Hospital Innsbruck, Austria ...
... Perioperative Medicine, Barts Heart Centre St. Bartholomew’s Hospital, Barts Healt NHS Queen Mary University of London and Department of Anaesthesiology and Intensive Care University Hospital Innsbruck, Austria ...
Ligation of the Outflow Graft of the Left Ventricular
... thromboses. A significant 6-month actuarial mortality (48.2%) was noted in those patients managed medically without heart transplant or pump exchange, underscoring the importance of surgical intervention. Treatment of pump thrombosis can include VAD exchange or explant, heart transplantation, or med ...
... thromboses. A significant 6-month actuarial mortality (48.2%) was noted in those patients managed medically without heart transplant or pump exchange, underscoring the importance of surgical intervention. Treatment of pump thrombosis can include VAD exchange or explant, heart transplantation, or med ...
Effect of Combined Sympathetic and Vagal Stimulation on Heart
... positive-pressure ventilation with 100% oxygen. A single-lead electrocardiogram was monitored on an oscilloscope throughout the procedure to assure that all measurements were made during a time when the animal had a normal sinus rhythm. The isolation and preparation of the sympathetic and vagus nerv ...
... positive-pressure ventilation with 100% oxygen. A single-lead electrocardiogram was monitored on an oscilloscope throughout the procedure to assure that all measurements were made during a time when the animal had a normal sinus rhythm. The isolation and preparation of the sympathetic and vagus nerv ...
Single Arterial Trunk - Heart
... trunk was a solitary pulmonary artery since it did not give rise to the coronary arteries. In their view, the commonest cause of a single ventricle with a single arterial trunk was atresia or aplasia of the mitral valve. In consequence, the left ventricle and aorta were bypassed and failed to develo ...
... trunk was a solitary pulmonary artery since it did not give rise to the coronary arteries. In their view, the commonest cause of a single ventricle with a single arterial trunk was atresia or aplasia of the mitral valve. In consequence, the left ventricle and aorta were bypassed and failed to develo ...
a PDF of this article. - Journal of Invasive Cardiology
... Severity of AS, aortic valve structure, and the aortic root were evaluated by transthoracic and transesophageal echocardiography (General Electric Vivid 7 GE Vingmed Ultrasound AS). Echocardiographic measurements were performed in the left lateral decubitus position according to the criteria of the ...
... Severity of AS, aortic valve structure, and the aortic root were evaluated by transthoracic and transesophageal echocardiography (General Electric Vivid 7 GE Vingmed Ultrasound AS). Echocardiographic measurements were performed in the left lateral decubitus position according to the criteria of the ...
Heart failure in patients with preserved and - Heart
... (SD) age 69.4 (11.7) years; 485 women, 767 men) who had been admitted to a cardiology service for CHF in the period 1991–2002 and whose LV systolic function had been echocardiographically evaluated within two weeks of admission. Data were collected on the main clinical findings, supplementary examin ...
... (SD) age 69.4 (11.7) years; 485 women, 767 men) who had been admitted to a cardiology service for CHF in the period 1991–2002 and whose LV systolic function had been echocardiographically evaluated within two weeks of admission. Data were collected on the main clinical findings, supplementary examin ...
INTERACTIVE CASE 4 CARDIAC B
... hypertrophy and dilated cardiomyopathy (beginning on the right,then left). Actuarial survival for untreated tetralogy of Fallot is approximately 75% after the first year of life, 60% by four years, 30% by ten years, and 5% by forty years. ...
... hypertrophy and dilated cardiomyopathy (beginning on the right,then left). Actuarial survival for untreated tetralogy of Fallot is approximately 75% after the first year of life, 60% by four years, 30% by ten years, and 5% by forty years. ...
External Cardiac Defibrillators for the Prevention of Sudden Death
... that deliver a countershock. The alarm module alerts the patient to certain conditions by lights or voice messages. The U.S. Food and Drug Administration (FDA) approved the Lifecor WCD® 2000 system via premarket application approval in December 2001 for “adult patients who are at risk for cardiac ar ...
... that deliver a countershock. The alarm module alerts the patient to certain conditions by lights or voice messages. The U.S. Food and Drug Administration (FDA) approved the Lifecor WCD® 2000 system via premarket application approval in December 2001 for “adult patients who are at risk for cardiac ar ...
Ventricular Premature Contractions in the Athlete
... - occurs without a short R-R interval - there is no family history of sudden death ...
... - occurs without a short R-R interval - there is no family history of sudden death ...
Studying Systemic Oxidative Stress in Heart Failure
... xidative stress in the cardiovascular system is characterized by the increased bioavailability of reactive oxygen species (ROS) in cardiac and vascular cells, due to an imbalance between their production by the various prooxidant enzymatic systems and their elimination by the endogenous antioxidant ...
... xidative stress in the cardiovascular system is characterized by the increased bioavailability of reactive oxygen species (ROS) in cardiac and vascular cells, due to an imbalance between their production by the various prooxidant enzymatic systems and their elimination by the endogenous antioxidant ...
Atrial fibrillation and outcomes in heart failure with preserved versus
... frequently complicates HF. We examined how AF has impacts on adverse outcomes in HF-PEF versus HF-REF within a large, contemporary cohort. Methods and Results-—We identified all adults diagnosed with HF-PEF or HF-REF based on hospital discharge and ambulatory visit diagnoses and relevant imaging resu ...
... frequently complicates HF. We examined how AF has impacts on adverse outcomes in HF-PEF versus HF-REF within a large, contemporary cohort. Methods and Results-—We identified all adults diagnosed with HF-PEF or HF-REF based on hospital discharge and ambulatory visit diagnoses and relevant imaging resu ...
Left Ventricle: Ischemia and Function Small Group Discussion
... SV = Area x VTI where area is the area of the LVOT or the aortic valve and VTI is the velocity time integral of blood passing through the respective area being measured. ...
... SV = Area x VTI where area is the area of the LVOT or the aortic valve and VTI is the velocity time integral of blood passing through the respective area being measured. ...
Improvement of Cardiac Performance by Intravenous Infusion of L
... rhythm, and none had active anginal syndrome, recent myocardial infarction, coronary artery bypass surgery or any systemic chronic disease. Doppler echocardiography, performed before the study to ensure adequate visualization, showed mild functional mitral regurgitation in 3 of the 12 patients. All ...
... rhythm, and none had active anginal syndrome, recent myocardial infarction, coronary artery bypass surgery or any systemic chronic disease. Doppler echocardiography, performed before the study to ensure adequate visualization, showed mild functional mitral regurgitation in 3 of the 12 patients. All ...
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.