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Depolarization and Repolarization
... of >1mm and longer than 80 milliseconds following the Jpoint. This measure has a false positive rate of 15-20% (which is slightly higher in women than men) and a false negative rate of 20-30%. • ST depression may be associated with hypokalemia or digitalis toxicity. ...
... of >1mm and longer than 80 milliseconds following the Jpoint. This measure has a false positive rate of 15-20% (which is slightly higher in women than men) and a false negative rate of 20-30%. • ST depression may be associated with hypokalemia or digitalis toxicity. ...
Atrial Fibrillation in Children
... 5. Atrial fibrillation in neonates The diagnosis of atrial fibrillation in the neonate is simpler than in the fetus due to the convenience of direct access to the patient. A 12-lead electrocardiogram can obtained and diagnostic accuracy greatly increased. Rarely is a neonatal invasive electrophysiol ...
... 5. Atrial fibrillation in neonates The diagnosis of atrial fibrillation in the neonate is simpler than in the fetus due to the convenience of direct access to the patient. A 12-lead electrocardiogram can obtained and diagnostic accuracy greatly increased. Rarely is a neonatal invasive electrophysiol ...
insight review articles
... and irregular activation of the atrium, for example, 400–600 pulses of the atrium muscular wall per minute in humans. The occurrence of AF increases with age, with a prevalence rising from 0.5% of people in their 50s to nearly 10% of the octogenarian population1,2. Several cardiac disorders predispo ...
... and irregular activation of the atrium, for example, 400–600 pulses of the atrium muscular wall per minute in humans. The occurrence of AF increases with age, with a prevalence rising from 0.5% of people in their 50s to nearly 10% of the octogenarian population1,2. Several cardiac disorders predispo ...
chronic congestive heart failure.
... buffered to pH 7.6 with phosphate. Diffusion coefficients were corrected to 200 C and to water as a solvent. Sedimentation constants were determined on all but one of the myosin preparations used for diffusion measurements. Viscosity was measured with a size II Ubbelohde viscosimeter with an outflow ...
... buffered to pH 7.6 with phosphate. Diffusion coefficients were corrected to 200 C and to water as a solvent. Sedimentation constants were determined on all but one of the myosin preparations used for diffusion measurements. Viscosity was measured with a size II Ubbelohde viscosimeter with an outflow ...
Syncope And Atrial Fibrillation - Journal of Atrial Fibrillation
... shorten with slowing of the heart rate. This paradoxical finding linked with an increase in atrial dispersion of refractoriness is the mechanism for vagal induction of atrial fibrillation.10 The patient population of vagal induced atrial fibrillation favors men over women (ratio 4:1) usually between ...
... shorten with slowing of the heart rate. This paradoxical finding linked with an increase in atrial dispersion of refractoriness is the mechanism for vagal induction of atrial fibrillation.10 The patient population of vagal induced atrial fibrillation favors men over women (ratio 4:1) usually between ...
Fiber tracking and fiber architecture description in cardiac DT
... CVDs in 2008, representing 30% of all global deaths. Over 80% of CVD deaths take place in low- and middle-income countries [Organization (2011)]. The number of people who die from CVDs, mainly from heart disease and stroke, will increase to reach 23.3 million by 2030 [Organization (2011), Mathers an ...
... CVDs in 2008, representing 30% of all global deaths. Over 80% of CVD deaths take place in low- and middle-income countries [Organization (2011)]. The number of people who die from CVDs, mainly from heart disease and stroke, will increase to reach 23.3 million by 2030 [Organization (2011), Mathers an ...
The Mammalian Ste20-like Kinase 2 (Mst2) Modulates Stress
... were obtained from Abcam. We used horseradish peroxidaselabeled secondary antibodies (Cell Signaling) for visualization. For immunofluorescence and immunohistochemistry, anti-␣actinin (Sigma), and anti Ser10 phospho-HH3 (Cell Signaling Technologies) were used. Anti Ki67 antibody (Abcam) and anti-pha ...
... were obtained from Abcam. We used horseradish peroxidaselabeled secondary antibodies (Cell Signaling) for visualization. For immunofluorescence and immunohistochemistry, anti-␣actinin (Sigma), and anti Ser10 phospho-HH3 (Cell Signaling Technologies) were used. Anti Ki67 antibody (Abcam) and anti-pha ...
Permanent Pacemaker
... Advanced Nursing Practice Educator, Cardiac Critical Care Unit, Labatt Family Heart Centre Hospital for Sick Children, Toronto Introduction A pacemaker is an electronic device which provides repetitive electrical stimuli to the right atrium (RA), right ventricle (RV) or both in the case of dual cham ...
... Advanced Nursing Practice Educator, Cardiac Critical Care Unit, Labatt Family Heart Centre Hospital for Sick Children, Toronto Introduction A pacemaker is an electronic device which provides repetitive electrical stimuli to the right atrium (RA), right ventricle (RV) or both in the case of dual cham ...
Exercise Training, Genetics And Heart Failure
... The aim of the present thesis was to examine the effects of exercise training, gene variants and the interaction between both on left ventricular function, left ventricular structure and exercise tolerance in heart failure patients. Heart failure patients with preserved, mild and moderate to severe ...
... The aim of the present thesis was to examine the effects of exercise training, gene variants and the interaction between both on left ventricular function, left ventricular structure and exercise tolerance in heart failure patients. Heart failure patients with preserved, mild and moderate to severe ...
In Vivo Measurements of Atrial Repolarization Alternans
... Intermittence of Re-ALT has been reported experimentally [3] and clinically [10]. Mirinov et al. [3] showed that intermittent Re-ALT was related to unstable nodal lines and slow APD accommodation following a change in pacing rate. Selvaraj et al. [10] showed spatially out of phase (i.e. discordant) ...
... Intermittence of Re-ALT has been reported experimentally [3] and clinically [10]. Mirinov et al. [3] showed that intermittent Re-ALT was related to unstable nodal lines and slow APD accommodation following a change in pacing rate. Selvaraj et al. [10] showed spatially out of phase (i.e. discordant) ...
the lethal hazard of prone restraint: positional asphyxiation
... possible contributing factor to the subject’s demise would be compressional asphyxia, as it is noted that several people were required to subdue the subject in a prone position, and it is possible respiratory efforts may have been interfered with. D. NORMAN H. Norman H. was a 35-year-old man with a ...
... possible contributing factor to the subject’s demise would be compressional asphyxia, as it is noted that several people were required to subdue the subject in a prone position, and it is possible respiratory efforts may have been interfered with. D. NORMAN H. Norman H. was a 35-year-old man with a ...
Practical diastology André Y Denault, Pierre Couture CITATION
... deceleration time, and a reduction of the E/A ratio. The PVF PW Doppler signal will show an increased S/D ratio. Tissue Doppler of the mitral annulus will demonstrate an Em/Am ratio < 1 while on color M-mode, propagation velocity (Vp) will be decreased. The delayed relaxation abnormality is the most ...
... deceleration time, and a reduction of the E/A ratio. The PVF PW Doppler signal will show an increased S/D ratio. Tissue Doppler of the mitral annulus will demonstrate an Em/Am ratio < 1 while on color M-mode, propagation velocity (Vp) will be decreased. The delayed relaxation abnormality is the most ...
Measurement of Left Ventricular Diameter In the Dog by Cardiac
... intravenously in a dose of 2 ml/kg. Supplemental anesthesia was given at evidence of arousal. Heart rate was controlled, as indicated in subsequent sections, by an external pacemaker connected to a bipolar pacing catheter in the right atrium. We exposed the femoral vessels in each dog and the right ...
... intravenously in a dose of 2 ml/kg. Supplemental anesthesia was given at evidence of arousal. Heart rate was controlled, as indicated in subsequent sections, by an external pacemaker connected to a bipolar pacing catheter in the right atrium. We exposed the femoral vessels in each dog and the right ...
The Only EKG Book You`ll Ever Need, 5th Edition
... Dedication For my mother, who will always live in my heart, and for Nancy, Ali, and Jon, still and always the heart of m y matter. ...
... Dedication For my mother, who will always live in my heart, and for Nancy, Ali, and Jon, still and always the heart of m y matter. ...
Effect of Right Ventricular Pacing on Ventricular Rhythm During
... in preventing all anterogradely originated complexes. The right ventricular pacing cycles at which these phenomena occur vary from patient to patient and are clearly related to the ventricular intervals before pacing (Fig. 5). Sex, age, medication (such as digitalis) , clinical indication for pacing ...
... in preventing all anterogradely originated complexes. The right ventricular pacing cycles at which these phenomena occur vary from patient to patient and are clearly related to the ventricular intervals before pacing (Fig. 5). Sex, age, medication (such as digitalis) , clinical indication for pacing ...
cellular update From syncitium to regulated pump: a cardiac muscle
... this end, many have adopted a combined approach of using the cardiovascular learning objectives associated with Americal Physiological Society (APS) Medical Physiology Curriculum Objectives (http://www.the-aps.org/education/MedPhysObj/) in conjunction with supplementing assigned textbook readings wi ...
... this end, many have adopted a combined approach of using the cardiovascular learning objectives associated with Americal Physiological Society (APS) Medical Physiology Curriculum Objectives (http://www.the-aps.org/education/MedPhysObj/) in conjunction with supplementing assigned textbook readings wi ...
THE EFFECT OF EXERCISE TRAINING ON THE AUTONOMIC
... include physical exercise as part of the treatment prescription of patients with class I and II RA. ...
... include physical exercise as part of the treatment prescription of patients with class I and II RA. ...
Catheter Ablation as a Treatment for Atrial Fibrillation
... and/or the myocardial substrate that maintains the aberrant rhythm. The maze procedure, an open surgical procedure often combined with other cardiac surgeries ( e.g., valve repair) is an ablative treatment involving sequential atriotomy incisions designed to create electrical barriers that prevent t ...
... and/or the myocardial substrate that maintains the aberrant rhythm. The maze procedure, an open surgical procedure often combined with other cardiac surgeries ( e.g., valve repair) is an ablative treatment involving sequential atriotomy incisions designed to create electrical barriers that prevent t ...
the left atrium in hypertension: a symbol of mortality and morbidity?
... atrial size is more closely related to ambulatory, rather than office, blood pressure measurements, and a high mean night time blood pressure is a powerful marker of left atrial enlargement in arterial hypertension [21]. Whether left atrial enlargement in hypertension is a direct result of hypertens ...
... atrial size is more closely related to ambulatory, rather than office, blood pressure measurements, and a high mean night time blood pressure is a powerful marker of left atrial enlargement in arterial hypertension [21]. Whether left atrial enlargement in hypertension is a direct result of hypertens ...
Recommendations for the Evaluation of Left Ventricular Diastolic
... for the maximum time for LV filling. This theoretically optimal situation is approached by the cyclic interaction of myofilaments and assumes competent mitral and aortic valves. Diastole starts at aortic valve closure and includes LV pressure fall, rapid filling, diastasis (at slower heart rates), a ...
... for the maximum time for LV filling. This theoretically optimal situation is approached by the cyclic interaction of myofilaments and assumes competent mitral and aortic valves. Diastole starts at aortic valve closure and includes LV pressure fall, rapid filling, diastasis (at slower heart rates), a ...
EXPERIMENTS ON THE CAUSATION AND AMELIORATION
... resulted; the pressure in the pulmonary artery was also raised as shown by its dilatation; and still further proof of increased pressure in the pulmonary circulation is furnished by the development of hemorrhages during inspection of the lung. As these experiments were necessarily carried out under ...
... resulted; the pressure in the pulmonary artery was also raised as shown by its dilatation; and still further proof of increased pressure in the pulmonary circulation is furnished by the development of hemorrhages during inspection of the lung. As these experiments were necessarily carried out under ...
Cardiac surgery
![](https://commons.wikimedia.org/wiki/Special:FilePath/Coronary_artery_bypass_surgery_Image_657B-PH.jpg?width=300)
Cardiovascular (heart) surgery is surgery on the heart or great vessels performed by cardiac surgeons. Frequently, it is done to treat complications of ischemic heart disease (for example, coronary artery bypass grafting), correct congenital heart disease, or treat valvular heart disease from various causes including endocarditis, rheumatic heart disease and atherosclerosis. It also includes heart transplantation.