Isorhythmic AV Dissociation
... frequent position of the P wave was in the ST segment (as in the last five beats in strip A). However, the R-P interval occasionally became more prolonged so that the P wave appeared just before the summit of the T wave (as in the first several beats of strip A). During the 35 sec which elapsed betw ...
... frequent position of the P wave was in the ST segment (as in the last five beats in strip A). However, the R-P interval occasionally became more prolonged so that the P wave appeared just before the summit of the T wave (as in the first several beats of strip A). During the 35 sec which elapsed betw ...
Cardiac Resynchronization Therapy for€Mild Heart Failure
... differences in study designs, the results of these trials are complementary, demonstrating the short-term benefit of CRT (1–3). With the publication of the long-term follow-up of ...
... differences in study designs, the results of these trials are complementary, demonstrating the short-term benefit of CRT (1–3). With the publication of the long-term follow-up of ...
Grade 3: Lesson PLan 1 - Texas Heart Institute
... and close, making the lub-dub sound that you hear when you listen to the chest. Ask what instrument doctors and nurses use when they listen to the heart. Using an actual stethoscope (or a model made from rubber tubing and a funnel or the top section of a plastic bottle), allow students to listen to ...
... and close, making the lub-dub sound that you hear when you listen to the chest. Ask what instrument doctors and nurses use when they listen to the heart. Using an actual stethoscope (or a model made from rubber tubing and a funnel or the top section of a plastic bottle), allow students to listen to ...
nuclear blood pool imaging, cardiac blood pool, heart - e
... Cardiac blood pool imaging, gated equilibrium: planar, single study at rest or stress (exercise and/or pharmacologic), wall motion study plus ejection fraction, with or without additional quantitative processing ...
... Cardiac blood pool imaging, gated equilibrium: planar, single study at rest or stress (exercise and/or pharmacologic), wall motion study plus ejection fraction, with or without additional quantitative processing ...
Electrophysiology research includes MR
... often originating in the pulmonary veins, causes electrical and mechanical dysfunction of the atria. Blood pools in the atria, thereby promoting clot formation and raising the risk of stroke. One solution is to electrically isolate the pulmonary veins from the atria with radiofrequency (RF) ablation ...
... often originating in the pulmonary veins, causes electrical and mechanical dysfunction of the atria. Blood pools in the atria, thereby promoting clot formation and raising the risk of stroke. One solution is to electrically isolate the pulmonary veins from the atria with radiofrequency (RF) ablation ...
Autonomic Consequences of Cerebral Hemisphere Infarction
... Table 1 shows the age and sex distribution of the patients in each of the two groups. Consecutive patients were admitted to the study if they fulfilled the following criteria: (1) the time of onset of the stroke was precisely known; (2) computerized tomography scan of the brain confirmed a single ce ...
... Table 1 shows the age and sex distribution of the patients in each of the two groups. Consecutive patients were admitted to the study if they fulfilled the following criteria: (1) the time of onset of the stroke was precisely known; (2) computerized tomography scan of the brain confirmed a single ce ...
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... an essential role in BAS-induced facilitation of DADmediated triggered activity (Figure 2) and, in addition to I Ca,L , it was essential for the facilitation of arrhythmogenesis under the influence of BAS. Thus, G406R Cav1.2 channel mutation confers not only a trigger but also a substrate for the de ...
... an essential role in BAS-induced facilitation of DADmediated triggered activity (Figure 2) and, in addition to I Ca,L , it was essential for the facilitation of arrhythmogenesis under the influence of BAS. Thus, G406R Cav1.2 channel mutation confers not only a trigger but also a substrate for the de ...
4-coronary-heart-disease-1
... blocked blood vessels that supply blood to your legs. • A stent is a small, metal mesh tube that keeps the artery open. • CABG a harvested great saphenous vein of the leg, attaching the proximal end to the aorta or one of its major branches, and the distal end to immediately beyond a partially obstr ...
... blocked blood vessels that supply blood to your legs. • A stent is a small, metal mesh tube that keeps the artery open. • CABG a harvested great saphenous vein of the leg, attaching the proximal end to the aorta or one of its major branches, and the distal end to immediately beyond a partially obstr ...
Adult Congenital Heart Disease
... Recommending treatment or other patient care Assessing risk, determining prognosis, and applying principles from epidemiologic studies Understanding the underlying pathophysiology of disease and basic science knowledge applicable to patient care ...
... Recommending treatment or other patient care Assessing risk, determining prognosis, and applying principles from epidemiologic studies Understanding the underlying pathophysiology of disease and basic science knowledge applicable to patient care ...
Heart Rate Turbulence in Patients after Percutaneous Coronary
... onset (TO) and turbulence slope (TS) values among patients with acute ST-elevation myocardial infarction (STEMI) underwent revascularization by means of primary PCI or fibrinolytic. We hypothesized that the values of TO and TS were different in two kinds of revascularization treatment. The subjects ...
... onset (TO) and turbulence slope (TS) values among patients with acute ST-elevation myocardial infarction (STEMI) underwent revascularization by means of primary PCI or fibrinolytic. We hypothesized that the values of TO and TS were different in two kinds of revascularization treatment. The subjects ...
Atrial Dissociation and Uniatrial Fibrillation
... fibrillation. By ligating the left anterior atrial artery he produced atrial dissociation on 2 occasions with sinus rhythm persisting in the right atrium and controlling the ventricles, while the left atrium was fibrillating. The tracing of Lombardini and Aviles7 shows a remarkable, rapid and regula ...
... fibrillation. By ligating the left anterior atrial artery he produced atrial dissociation on 2 occasions with sinus rhythm persisting in the right atrium and controlling the ventricles, while the left atrium was fibrillating. The tracing of Lombardini and Aviles7 shows a remarkable, rapid and regula ...
sympTOmATOlOgy AnD sTRuCTuRAl HeART AbnORmAlITIes In
... (ECG) finding which may or may not be associated with overt heart disease at the time of diagnosis. This study was conducted to determine the pattern of clinical presentation and structural abnormalities in heart as diagnosed on Transthoracic Echocardiography in patients with left bundle branch bloc ...
... (ECG) finding which may or may not be associated with overt heart disease at the time of diagnosis. This study was conducted to determine the pattern of clinical presentation and structural abnormalities in heart as diagnosed on Transthoracic Echocardiography in patients with left bundle branch bloc ...
Copyright © 2001 T - TangHua2012-2013
... _______) each time they contract Must have elastic, expandable walls The force of blood against the blood vessel walls is known as ________ ____________ Blood Pressure is not constant The term __________ ___________ (or Systole) refers to the blood pressure when the ventricles ...
... _______) each time they contract Must have elastic, expandable walls The force of blood against the blood vessel walls is known as ________ ____________ Blood Pressure is not constant The term __________ ___________ (or Systole) refers to the blood pressure when the ventricles ...
Murmurs on Murmurs, When to ECHO, When to Refer
... severe left-sided valve lesions. It is critical to be able to distinguish benign murmurs from serious potentially life-threatening problems. Echocard- What are we listening for? iography has become the logical test to check valve function after a physical exam has raised The vast majority of concern ...
... severe left-sided valve lesions. It is critical to be able to distinguish benign murmurs from serious potentially life-threatening problems. Echocard- What are we listening for? iography has become the logical test to check valve function after a physical exam has raised The vast majority of concern ...
Cardiovascular Topics Dysrhythmogenic potential in acute admissions to psychiatric hospitals and clinics 140
... important that clinicians in general should be aware of the possibility of a higher risk when working with psychiatric patients. This is all the more important in view of the fact that many of the medications prescribed to psychiatric patients are known to influence cardiovascular function.15-17 Thi ...
... important that clinicians in general should be aware of the possibility of a higher risk when working with psychiatric patients. This is all the more important in view of the fact that many of the medications prescribed to psychiatric patients are known to influence cardiovascular function.15-17 Thi ...
Fetal CHF
... Pulsatility Index • A Doppler-derived measure of placental vascular resistance (PVR) • Obtained by Doppler interrogation of the umbilical artery • Calculated as maximum systolic – end-diastolic velocity/ mean velocity (normal mean 2.46 +/0.52) • When there is a low, absent, or even reversed diastol ...
... Pulsatility Index • A Doppler-derived measure of placental vascular resistance (PVR) • Obtained by Doppler interrogation of the umbilical artery • Calculated as maximum systolic – end-diastolic velocity/ mean velocity (normal mean 2.46 +/0.52) • When there is a low, absent, or even reversed diastol ...
JVP
... the right atrium and consists of three positive waves and two negative troughs Simultaneous palpation of the left carotid artery aids the examiner in relating the venous pulsations to the timing of the cardiac cycle. ...
... the right atrium and consists of three positive waves and two negative troughs Simultaneous palpation of the left carotid artery aids the examiner in relating the venous pulsations to the timing of the cardiac cycle. ...
Cardiac Cycle - Uplift Education
... aortic/pulmonary closed 2. Early ventricular systole – atria relax, ventricles contract, ALL VALVES CLOSED 3. Late ventricular systole – atria relax, ventricles contract, tricuspid/bicuspid closed, aortic/pulmonary open ...
... aortic/pulmonary closed 2. Early ventricular systole – atria relax, ventricles contract, ALL VALVES CLOSED 3. Late ventricular systole – atria relax, ventricles contract, tricuspid/bicuspid closed, aortic/pulmonary open ...
Atrial arrhythmias in the young: early onset atrial arrhythmias
... and a ventricular rate of 42 b.p.m. with apparent regular R–R intervals (Figure 3A). Echocardiography revealed normal LV function but severe bi-atrial enlargement. No intracardiac shunts were evident. Doppler recordings across the AV valves showed complete absence of A-waves, indicating loss of righ ...
... and a ventricular rate of 42 b.p.m. with apparent regular R–R intervals (Figure 3A). Echocardiography revealed normal LV function but severe bi-atrial enlargement. No intracardiac shunts were evident. Doppler recordings across the AV valves showed complete absence of A-waves, indicating loss of righ ...
cardiovascular changes during pregnancy
... cardiac output, which peaks at 140% of pre-pregnancy levels by 20-28 weeks of gestation (5). During labour, without analgesia, cardiac output increases by approximately 30% with contractions due to an increase in stroke volume (6). This acute increase in cardiac output may be alleviated with effecti ...
... cardiac output, which peaks at 140% of pre-pregnancy levels by 20-28 weeks of gestation (5). During labour, without analgesia, cardiac output increases by approximately 30% with contractions due to an increase in stroke volume (6). This acute increase in cardiac output may be alleviated with effecti ...
Ventricular Assist Devices (VAD)
... developed for selected therapeutic or diagnostic services found to be safe, but proven effective in a limited, defined population of patients or clinical circumstances. They include concise clinical coverage criteria based on current literature review, consultation with practicing physicians in the ...
... developed for selected therapeutic or diagnostic services found to be safe, but proven effective in a limited, defined population of patients or clinical circumstances. They include concise clinical coverage criteria based on current literature review, consultation with practicing physicians in the ...
sample
... 10. T or F. The semilunar valves are the aortic and mitral valves. 11. T or F. The job of the heart valves is to prevent backflow of blood. 12. T or F. The vena cava is a large artery that carries blood from the right ventricle to the lungs. 13. T or F. The three main coronary arteries are the aort ...
... 10. T or F. The semilunar valves are the aortic and mitral valves. 11. T or F. The job of the heart valves is to prevent backflow of blood. 12. T or F. The vena cava is a large artery that carries blood from the right ventricle to the lungs. 13. T or F. The three main coronary arteries are the aort ...
Case Redlands August
... • If third degree AV block occurs within the AV node, about two-thirds of the escape rhythms have a narrow QRS complex, ie, a junctional or AV nodal rhythm • Block at the level of the bundle of His is also typically associated with a narrow QRS complex • Patients with trifascicular block have a sub- ...
... • If third degree AV block occurs within the AV node, about two-thirds of the escape rhythms have a narrow QRS complex, ie, a junctional or AV nodal rhythm • Block at the level of the bundle of His is also typically associated with a narrow QRS complex • Patients with trifascicular block have a sub- ...
The heart by boardworks
... The blood vessels on the outside of the heart carry oxygen-rich blood to the heart muscle cells. Oxygen-poor blood is then carried away from these cells by outer blood vessels and back into the heart. 3 of 49 ...
... The blood vessels on the outside of the heart carry oxygen-rich blood to the heart muscle cells. Oxygen-poor blood is then carried away from these cells by outer blood vessels and back into the heart. 3 of 49 ...
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.