ECG - De Gasperis
... In mirror-image dextrocardia, the axes of P wave, QRS complex and T wave are directed to the right and inferior. This results in positive P waves in leads III and aVF and negative P waves in leads I and aVL. Not only the P wave, but QRS complex and T waves are also negative in lead I. In dextrocardi ...
... In mirror-image dextrocardia, the axes of P wave, QRS complex and T wave are directed to the right and inferior. This results in positive P waves in leads III and aVF and negative P waves in leads I and aVL. Not only the P wave, but QRS complex and T waves are also negative in lead I. In dextrocardi ...
branching patterns of left coronary artery among north indians
... artery variations including origin, as a cause of coronary heart disease are gaining consideration in the diagnostic workup in clinical conditions such as sudden death (Basso et al., 2000). Hence the need to establish diagnostic screening protocols for athletes and other young individuals subjected ...
... artery variations including origin, as a cause of coronary heart disease are gaining consideration in the diagnostic workup in clinical conditions such as sudden death (Basso et al., 2000). Hence the need to establish diagnostic screening protocols for athletes and other young individuals subjected ...
Geometrical considerations in cardiac electrophysiology and
... This says that the ionic current is equal to the product of membrane capacitance and the rate of change of transmembrane potential (with an opposite sign). Thus, we can estimate net ionic current from the first derivative of the membrane potential waveform. This is the methodology used by Bányász et ...
... This says that the ionic current is equal to the product of membrane capacitance and the rate of change of transmembrane potential (with an opposite sign). Thus, we can estimate net ionic current from the first derivative of the membrane potential waveform. This is the methodology used by Bányász et ...
Conus Artery in Coronary CT Angiography
... the conus artery exists. Sankari et al. (8) examined 30 cadaveric hearts and 20 angiograms and showed that the most frequent occurrence was a single ostium from the right sinus of Valsalva/RCA (23.30%; 76.7%) and the double ostium, which indicated the RCA and the conus artery (5.30% ; 16.7%). In our ...
... the conus artery exists. Sankari et al. (8) examined 30 cadaveric hearts and 20 angiograms and showed that the most frequent occurrence was a single ostium from the right sinus of Valsalva/RCA (23.30%; 76.7%) and the double ostium, which indicated the RCA and the conus artery (5.30% ; 16.7%). In our ...
Congenital coronary artery anomalies: a bridge from embryology to
... EPDCs critically contribute to the morphogenesis of the coronary vascular system as they incorporate to the intimal, medial, and adventitial layers of developing coronary blood vessels. However, while the participation of EPDCs in formation of the avian CA endothelium is widely accepted, disagreemen ...
... EPDCs critically contribute to the morphogenesis of the coronary vascular system as they incorporate to the intimal, medial, and adventitial layers of developing coronary blood vessels. However, while the participation of EPDCs in formation of the avian CA endothelium is widely accepted, disagreemen ...
Optical mapping of activation patterns in an animal - AJP
... nodal conduction abnormalities. In this regard, Brucato et al. (5) recently reported similar sinus bradycardia in infants born to mothers seropositive to antiSSA/Ro antibodies, suggesting that the spectrum of conduction abnormalities associated with maternal IgG extend beyond the AV node. The electr ...
... nodal conduction abnormalities. In this regard, Brucato et al. (5) recently reported similar sinus bradycardia in infants born to mothers seropositive to antiSSA/Ro antibodies, suggesting that the spectrum of conduction abnormalities associated with maternal IgG extend beyond the AV node. The electr ...
No Slide Title
... causing the heart to contract and relax. During contraction, blood is forced out of the heart into the arteries. This creates a pressure wave that can be felt as a pulse. During relaxation, the heart re-fills with with blood. ...
... causing the heart to contract and relax. During contraction, blood is forced out of the heart into the arteries. This creates a pressure wave that can be felt as a pulse. During relaxation, the heart re-fills with with blood. ...
the bronchial arteries in pulmonary emphysema
... avascular, and in three cases no adhesions were present in spite of the total obliteration of the visceral pleural arteries. (3) Anastomoses between Bronchial and Pulmonary Arteries in an Obliterated Peripheral Bronchial Arterial Circulation.-In four instances there was radiological evidence of prec ...
... avascular, and in three cases no adhesions were present in spite of the total obliteration of the visceral pleural arteries. (3) Anastomoses between Bronchial and Pulmonary Arteries in an Obliterated Peripheral Bronchial Arterial Circulation.-In four instances there was radiological evidence of prec ...
In-vivo measurement of swine myocardial resistivity
... on epicardium. This method can also be used to hold a plunge probe. One problem of this method is that, if the suction is too strong, there will be a bruise under the suction cup; this has unknown effect on the measured resistivity. In a measurement with a plunge probe, if we just insert the electro ...
... on epicardium. This method can also be used to hold a plunge probe. One problem of this method is that, if the suction is too strong, there will be a bruise under the suction cup; this has unknown effect on the measured resistivity. In a measurement with a plunge probe, if we just insert the electro ...
Living With Your ICD
... A person with bradycardia may feel very tired because their body is not getting enough oxygen. They may also feel light-headed or dizzy. Pacemakers correct bradycardia by speeding up the heartbeat to a more normal rate. ...
... A person with bradycardia may feel very tired because their body is not getting enough oxygen. They may also feel light-headed or dizzy. Pacemakers correct bradycardia by speeding up the heartbeat to a more normal rate. ...
as a PDF
... the heart contractility and pressure via vasodialatation. Its acute administration in the chick embryo exhibits dose-dependent lethality (Ostadal et al., 1987) and results in general growth retardation. It is not yet clear whether it is a direct systemic effect (Jaffee & Jaffee, 1989) or a result of ...
... the heart contractility and pressure via vasodialatation. Its acute administration in the chick embryo exhibits dose-dependent lethality (Ostadal et al., 1987) and results in general growth retardation. It is not yet clear whether it is a direct systemic effect (Jaffee & Jaffee, 1989) or a result of ...
Design Alternatives
... The mitral valve is a bi-leaflet valve and is the passageway between the left atrium and the left ventricle of the heart. The chordae tendineae are tendon-like chords that anchor the mitral valve leaflets to the papillary muscles. The chords prevent the leaflets from prolapsing into the left atrium. ...
... The mitral valve is a bi-leaflet valve and is the passageway between the left atrium and the left ventricle of the heart. The chordae tendineae are tendon-like chords that anchor the mitral valve leaflets to the papillary muscles. The chords prevent the leaflets from prolapsing into the left atrium. ...
EMBLEM™ S-ICD System
... A test used to measure your heart’s pumping function (ejection fraction). Ejection fraction The percentage of blood ejected from the left ventricle with each heartbeat. A healthy ejection fraction is usually higher than 55%, although this can vary depending on the individual. Patients with a low eje ...
... A test used to measure your heart’s pumping function (ejection fraction). Ejection fraction The percentage of blood ejected from the left ventricle with each heartbeat. A healthy ejection fraction is usually higher than 55%, although this can vary depending on the individual. Patients with a low eje ...
Heart Disease and Stroke
... from heart disease and stroke are falling. According to the National Heart, Lung and Blood Institute (NHLBI), if death rates were the same as those of 30 years ago, 815,000 more Americans would die of heart disease annually and 250,000 more would die of stroke. This reduction in death rates is “one ...
... from heart disease and stroke are falling. According to the National Heart, Lung and Blood Institute (NHLBI), if death rates were the same as those of 30 years ago, 815,000 more Americans would die of heart disease annually and 250,000 more would die of stroke. This reduction in death rates is “one ...
Pacemaker Therapy - Boston Scientific
... In most people, the heart beats 60 to 100 times per minute when at rest. One of the most common reasons people need a pacemaker is when their heartbeat is abnormally slow. This can be due to many causes. When the heart beats too slowly, the body does not get enough blood and oxygen for it to functio ...
... In most people, the heart beats 60 to 100 times per minute when at rest. One of the most common reasons people need a pacemaker is when their heartbeat is abnormally slow. This can be due to many causes. When the heart beats too slowly, the body does not get enough blood and oxygen for it to functio ...
177 - Yamamoto et al. - Daniel Burkhoff MD PhD
... Transmyocardial laser revascularization (TMR) is a new therapy being evaluated to treat patients with refectory angina not amenable to traditional therapies (1). Clinical studies of TMR have shown an average two-class reduction in angina (2–4). In addition, results of some nuclear flow studies have ...
... Transmyocardial laser revascularization (TMR) is a new therapy being evaluated to treat patients with refectory angina not amenable to traditional therapies (1). Clinical studies of TMR have shown an average two-class reduction in angina (2–4). In addition, results of some nuclear flow studies have ...
Aortic Dissection - Society of Cardiovascular Anesthesiologists
... regurgitation in a patient with IMR caused by papillary muscle dysfunction or displacement may only manifest in the presence of myocardial ischemia. In another common scenario, a patient with significant IMR while in decompensated heart failure or during exercise stress testing may only manifest mil ...
... regurgitation in a patient with IMR caused by papillary muscle dysfunction or displacement may only manifest in the presence of myocardial ischemia. In another common scenario, a patient with significant IMR while in decompensated heart failure or during exercise stress testing may only manifest mil ...
EMBLEMTM S-ICD System Patient Handbook
... When you experience VF, very little blood is pumped from your heart to the rest of your body. When your heart is in VF, you will become unconscious very quickly. Like ventricular tachycardia, VF can be treated with a defibrillator. The defibrillator produces an electrical shock that passes through ...
... When you experience VF, very little blood is pumped from your heart to the rest of your body. When your heart is in VF, you will become unconscious very quickly. Like ventricular tachycardia, VF can be treated with a defibrillator. The defibrillator produces an electrical shock that passes through ...
sample - Test Bank Exam
... Chest pain resulting from blood flow being held back from heart muscle Drug used to treat angina, hypertension, and arrhythmias by blocking the action of epinephrine at receptor sites on cells Pain, tension, and weakness in a leg after walking has begun Device that enables ventricles to beat togethe ...
... Chest pain resulting from blood flow being held back from heart muscle Drug used to treat angina, hypertension, and arrhythmias by blocking the action of epinephrine at receptor sites on cells Pain, tension, and weakness in a leg after walking has begun Device that enables ventricles to beat togethe ...
ISOPROTERENOL TOXICITY INDUCED ECG ALTERATIONS IN WISTAR RATS: ROLE OF
... electrocardiography (ECG) segments and heart rate of rat which are characteristic of myocardial infarction. Methods: We administered positive control carvedilol (10 mg/kg), H3R agonist imetit (5 and 10 mg/kg), H3R antagonist thioperamide (5mg/kg), imetit (5 and 10 mg/kg) with combination of thiopera ...
... electrocardiography (ECG) segments and heart rate of rat which are characteristic of myocardial infarction. Methods: We administered positive control carvedilol (10 mg/kg), H3R agonist imetit (5 and 10 mg/kg), H3R antagonist thioperamide (5mg/kg), imetit (5 and 10 mg/kg) with combination of thiopera ...
Simulating the blood-muscle-valve mechanics of the heart by an
... the vicinity of the heart valves) and comparatively coarse resolution is employed where it suffices. In the present work, we introduce a new adaptive and parallel version of the ...
... the vicinity of the heart valves) and comparatively coarse resolution is employed where it suffices. In the present work, we introduce a new adaptive and parallel version of the ...
Physical Fitness and Risk for Heart Failure and Coronary Artery
... vascular disease mortality. In contrast, little is known about associations of fitness with nonfatal cardiovascular events. Methods and Results—Linking individual participant data from the Cooper Center Longitudinal Study with Medicare claims files, we studied 20 642 participants (21% women) with fi ...
... vascular disease mortality. In contrast, little is known about associations of fitness with nonfatal cardiovascular events. Methods and Results—Linking individual participant data from the Cooper Center Longitudinal Study with Medicare claims files, we studied 20 642 participants (21% women) with fi ...
Reduced Systolic Torsion in Chronic “Pure” Mitral Regurgitation
... Background—Global left ventricular (LV) torsion declines with chronic ischemic mitral regurgitation (MR), which may accelerate the LV remodeling spiral toward global cardiomyopathy; however, it has not been definitively established whether this torsional decline is attributable to the infarct, the M ...
... Background—Global left ventricular (LV) torsion declines with chronic ischemic mitral regurgitation (MR), which may accelerate the LV remodeling spiral toward global cardiomyopathy; however, it has not been definitively established whether this torsional decline is attributable to the infarct, the M ...
Full Text
... leaflet variants and are easily closed (Fig. 1D). Many regurgitant MVs of any etiology can have abnormally open clefts due to annular dilation. These also can be sutured closed to improve the repair. Edge-to-edge repair. Alfieri et al. (33) described a technique first applied in 1992 in which leafle ...
... leaflet variants and are easily closed (Fig. 1D). Many regurgitant MVs of any etiology can have abnormally open clefts due to annular dilation. These also can be sutured closed to improve the repair. Edge-to-edge repair. Alfieri et al. (33) described a technique first applied in 1992 in which leafle ...
An Emerging Antiarrhythmic Target: Late Sodium Current
... therapies using ion channel blockers led to conflicting results. Many seemingly promising drugs turned out to be proarrhythmic. Clinical experiences by many physicians sum up to two important observations: (1) Ion channels blockers are risky, and some exacerbate arrhythmias. (2) Relatively successfu ...
... therapies using ion channel blockers led to conflicting results. Many seemingly promising drugs turned out to be proarrhythmic. Clinical experiences by many physicians sum up to two important observations: (1) Ion channels blockers are risky, and some exacerbate arrhythmias. (2) Relatively successfu ...