Diagnosis and ablation of atypical atrial tachycardia and flutter
... the same ablation session, only a small proportion of patients had recurrent atrial fibrillation or atrial tachycardia during long-term follow-up. Because atrial tachycardias that occur after radiofrequency ablation of atrial fibrillation often are persistent, are difficult to suppress with rhythm c ...
... the same ablation session, only a small proportion of patients had recurrent atrial fibrillation or atrial tachycardia during long-term follow-up. Because atrial tachycardias that occur after radiofrequency ablation of atrial fibrillation often are persistent, are difficult to suppress with rhythm c ...
impact of isoprenaline and caffeine on development of left
... as an increase in mass and size of the left ventricle which frequently occurs as a result of an elevated resistance within the circulatory system. This increase in mass of the myocardium results from a chronically raised workload on the heart (1) and is taken as an early sign of cardiomyopathy, whic ...
... as an increase in mass and size of the left ventricle which frequently occurs as a result of an elevated resistance within the circulatory system. This increase in mass of the myocardium results from a chronically raised workload on the heart (1) and is taken as an early sign of cardiomyopathy, whic ...
Curriculum Vitae - The Royal Children`s Hospital
... importantly, I have clinical fellows from all countries of the world who come to learn the pediatric cardiac surgery as it is practiced at the Royal Children’s Hospital. As associate professor of pediatrics, I have rarely teaching assignments to medical students in the University of Melbourne. On th ...
... importantly, I have clinical fellows from all countries of the world who come to learn the pediatric cardiac surgery as it is practiced at the Royal Children’s Hospital. As associate professor of pediatrics, I have rarely teaching assignments to medical students in the University of Melbourne. On th ...
Full version (PDF file)
... papillary muscle contraction force at 0.1 mmol/l. Propofol did not affect action potential duration at any concentration studied. Our study suggests that mechanisms contributing to the impaired myocardial contraction during propofol anesthesia might include ...
... papillary muscle contraction force at 0.1 mmol/l. Propofol did not affect action potential duration at any concentration studied. Our study suggests that mechanisms contributing to the impaired myocardial contraction during propofol anesthesia might include ...
Outcome after mitral valve surgery for mitral valve regurgitation
... it permits an appropriate selection of patients for whom mitral valve surgery should be offered and by which technique. The European system for cardiac operative risk evaluation score (EuroSCORE) has been used and demonstrated worldwide to be a valid tool for the prediction of immediate postoperativ ...
... it permits an appropriate selection of patients for whom mitral valve surgery should be offered and by which technique. The European system for cardiac operative risk evaluation score (EuroSCORE) has been used and demonstrated worldwide to be a valid tool for the prediction of immediate postoperativ ...
Role of Vitamin D in Cardiovascular Health
... Vitamin D and peripheral vascular disease: Vitamin D levels have been inversely correlated with calf vascular resistance and positively correlated with calf blood flow.25 Similar associations were identified in the NHANES III study. After multivariate adjustment for demographics, comorbidities, phys ...
... Vitamin D and peripheral vascular disease: Vitamin D levels have been inversely correlated with calf vascular resistance and positively correlated with calf blood flow.25 Similar associations were identified in the NHANES III study. After multivariate adjustment for demographics, comorbidities, phys ...
Seclusion: a literature review Report from the Conflict and Containment
... they have been personally attacked, threatened, or made to feel unsafe while in hospital. This figure increased to 41% for clinical staff and 77% of nursing staff. Even 18% of visitors to the units reported that they have been personally attacked, threatened, or made to feel unsafe (Healthcare Commi ...
... they have been personally attacked, threatened, or made to feel unsafe while in hospital. This figure increased to 41% for clinical staff and 77% of nursing staff. Even 18% of visitors to the units reported that they have been personally attacked, threatened, or made to feel unsafe (Healthcare Commi ...
1 PULMONARY HYPERTENSION Robyn J. Barst, MD I
... capacity is lost, leading to increases in pulmonary artery pressure at rest and further elevations in pulmonary artery pressure with exercise. In response to this increased afterload, the right ventricle hypertrophies. Initially, the right ventricle is capable of sustaining normal cardiac output at ...
... capacity is lost, leading to increases in pulmonary artery pressure at rest and further elevations in pulmonary artery pressure with exercise. In response to this increased afterload, the right ventricle hypertrophies. Initially, the right ventricle is capable of sustaining normal cardiac output at ...
Exercise training prevents the exaggerated exercise pressor reflex
... General surgical preparation. Rats were anesthetized with isoflourane (Halocarbon Laboratories, River Edge, NY; 5% in O2). A jugular vein and the trachea were cannulated. After tracheal cannulation, the lungs were ventilated with an anesthetic mixture of 2–3% isoflourane and O2. The right carotid ar ...
... General surgical preparation. Rats were anesthetized with isoflourane (Halocarbon Laboratories, River Edge, NY; 5% in O2). A jugular vein and the trachea were cannulated. After tracheal cannulation, the lungs were ventilated with an anesthetic mixture of 2–3% isoflourane and O2. The right carotid ar ...
Ventricular structure, function, and mechanics at high altitude
... short-axis views obtained from the LV base at the level of the mitral valve and the LV apex. The LV apex was defined as the point just above end-systolic luminal obliteration and obtained by moving the transducer one to two intercostal spaces caudally from the basal position to align with the apical ...
... short-axis views obtained from the LV base at the level of the mitral valve and the LV apex. The LV apex was defined as the point just above end-systolic luminal obliteration and obtained by moving the transducer one to two intercostal spaces caudally from the basal position to align with the apical ...
Aortic Valve and Ascending Aorta Guidelines for Management and
... operation; (3) effective orifice area (EOA) including gradients and energy loss; and (4) long-term durability, with no difference in survival compared with other devices, but better than the untreated population. Clearly, there are few, if any medical procedures that are as effective in relieving sym ...
... operation; (3) effective orifice area (EOA) including gradients and energy loss; and (4) long-term durability, with no difference in survival compared with other devices, but better than the untreated population. Clearly, there are few, if any medical procedures that are as effective in relieving sym ...
Print - Circulation
... To evaluate this problem in the diseased heart we simulated an LVAD in the operating room by bypassing and unloading the left ventricle with the heart-lung machine before routine open heart surgery. Right ventricular function was assessed in 12 patients with preoperative left ventricular ejection fr ...
... To evaluate this problem in the diseased heart we simulated an LVAD in the operating room by bypassing and unloading the left ventricle with the heart-lung machine before routine open heart surgery. Right ventricular function was assessed in 12 patients with preoperative left ventricular ejection fr ...
Document
... Objective: To determine the effects of ventricular pacing on the normal contraction sequence of the helical ventricular myocardial band, and its’ impact on left ventricular function. Methods: Ten pigs (25—68 kg) underwent analysis of percent segmental shortening (%SS) by sonomicrometry, with crystal ...
... Objective: To determine the effects of ventricular pacing on the normal contraction sequence of the helical ventricular myocardial band, and its’ impact on left ventricular function. Methods: Ten pigs (25—68 kg) underwent analysis of percent segmental shortening (%SS) by sonomicrometry, with crystal ...
Special Report Vein of Galen Aneurysms: A Review and Current
... Developmental retardation is common with vein of Galen aneurysms and is often used as an argument against offering treatment to severely affected infants. Mechanisms implicated for such damage are arterial steal, ischemia caused by compression from engorged draining veins and an enlarged vein of Gal ...
... Developmental retardation is common with vein of Galen aneurysms and is often used as an argument against offering treatment to severely affected infants. Mechanisms implicated for such damage are arterial steal, ischemia caused by compression from engorged draining veins and an enlarged vein of Gal ...
REIMBURSEMENT ISSUES
... • Period between contraction of the atria or ventricles during which the blood enters the relaxed chambers *Lubb-longer and lower pitch Dubb-shorter and sharper pitch* *Murmur (swishing) can be normal or abnormal* Mosby items and derived items © 2011, 2007 by Mosby, Inc., an affiliate of Elsevier In ...
... • Period between contraction of the atria or ventricles during which the blood enters the relaxed chambers *Lubb-longer and lower pitch Dubb-shorter and sharper pitch* *Murmur (swishing) can be normal or abnormal* Mosby items and derived items © 2011, 2007 by Mosby, Inc., an affiliate of Elsevier In ...
design and development of a pulsatile axial flow left ventricular
... This thesis aims to merge the advantages of displacement pumps (pulsatile flow) and axial-flow pumps (continuous flow) into a novel left vertical assist device (LVAD), by designing a novel minimal invasive, miniature axial-flow pump producing pulsating outflow for the patients having early heart fai ...
... This thesis aims to merge the advantages of displacement pumps (pulsatile flow) and axial-flow pumps (continuous flow) into a novel left vertical assist device (LVAD), by designing a novel minimal invasive, miniature axial-flow pump producing pulsating outflow for the patients having early heart fai ...
8 15 17 `Working round my heart transplant gave me more to focus on`
... work. This subject often comes up and is one of many aspects of living with cardiomyopathy that we want to do more to help with. Dealing with these practical issues can help people feel more on top of their cardiomyopathy. So later this year at our first national conference for families we will be r ...
... work. This subject often comes up and is one of many aspects of living with cardiomyopathy that we want to do more to help with. Dealing with these practical issues can help people feel more on top of their cardiomyopathy. So later this year at our first national conference for families we will be r ...
Invasive Hemodynamic Characteristics of Low Gradient
... aortic stenosis despite preserved ejection fraction has sometimes been called “paradoxic.” Because both orifice area and gradients are in clinical practice usually derived from echocardiography, and especially valve area calculation by the continuity equation may be affected by several measurement e ...
... aortic stenosis despite preserved ejection fraction has sometimes been called “paradoxic.” Because both orifice area and gradients are in clinical practice usually derived from echocardiography, and especially valve area calculation by the continuity equation may be affected by several measurement e ...
Obesity and atrial electrical and mechanical remodeling
... obesity as risk factors for AF, the histological and electrophysiological basis for this remains undefined. Therefore to define any atrial structural and functional changes paralleling weight gain, it is important to examine the current established models to study AF. Hypertension The relationship b ...
... obesity as risk factors for AF, the histological and electrophysiological basis for this remains undefined. Therefore to define any atrial structural and functional changes paralleling weight gain, it is important to examine the current established models to study AF. Hypertension The relationship b ...
Subclinical Atrial Fibrillation and the Risk of Stroke
... There are more than 400,000 pacemakers and implantable cardioverter–defibrillators (ICDs) implanted each year in North America.13-15 Subclinical episodes of rapid atrial rate are detected in many of these patients,16,17 often in the absence of clinical evidence of atrial fibrillation. The rate of st ...
... There are more than 400,000 pacemakers and implantable cardioverter–defibrillators (ICDs) implanted each year in North America.13-15 Subclinical episodes of rapid atrial rate are detected in many of these patients,16,17 often in the absence of clinical evidence of atrial fibrillation. The rate of st ...
Differentiation of "AV Junctional Rhythms"
... junction have clearly demonstrated that all three zones of the A-V node (upper nodal [AN], midnodal [NI, and lower nodal [NH] regions) exhibit action potentials which are functionally different from those recorded in contiguous atrial and His bundle cells. In addition, the amplitude and rate of rise ...
... junction have clearly demonstrated that all three zones of the A-V node (upper nodal [AN], midnodal [NI, and lower nodal [NH] regions) exhibit action potentials which are functionally different from those recorded in contiguous atrial and His bundle cells. In addition, the amplitude and rate of rise ...
Fontan Operation - Hellenic Journal of Cardiology
... Subsequently, this role was questioned,3 and in the contemporary design of the Fontan operation the superior vena cava is anastomosed directly to the pulmonary artery and, using a conduit that is created inside the baffle, the inferior vena cava is also drained to the pulmonary artery (lateral tunne ...
... Subsequently, this role was questioned,3 and in the contemporary design of the Fontan operation the superior vena cava is anastomosed directly to the pulmonary artery and, using a conduit that is created inside the baffle, the inferior vena cava is also drained to the pulmonary artery (lateral tunne ...
How Harmful is Conventional Right Ventricular Apical Pacing
... pacing became imperative and there have been a multitude of studies of the hemodynamic, electrophysiological, electrocardiographic, and clinical effects of ventricular pacing at other sites. Pacing of the left ventricle singly or with biventricular pacing has emerged as an effective and safe therapy ...
... pacing became imperative and there have been a multitude of studies of the hemodynamic, electrophysiological, electrocardiographic, and clinical effects of ventricular pacing at other sites. Pacing of the left ventricle singly or with biventricular pacing has emerged as an effective and safe therapy ...
Cardiac sympathetic afferent stimulation impairs - AJP
... was opened through the left second intercostal space. The left ventral ansa, which contains cardiac sympathetic afferent nerves, was identified, tied, and ligated. A pair of stainless steel stimulation electrodes was placed on the central end of this nerve. The stimulus (7 V, 1 ms, 20 Hz) was delive ...
... was opened through the left second intercostal space. The left ventral ansa, which contains cardiac sympathetic afferent nerves, was identified, tied, and ligated. A pair of stainless steel stimulation electrodes was placed on the central end of this nerve. The stimulus (7 V, 1 ms, 20 Hz) was delive ...
Management of acute coronary syndrome
Management of acute coronary syndrome is targeted against the effects of reduced blood flow to the afflicted area of the heart muscle, usually because of a blood clot in one of the coronary arteries, the vessels that supply oxygenated blood to the myocardium. This is achieved with urgent hospitalization and medical therapy, including drugs that relieve chest pain and reduce the size of the infarct, and drugs that inhibit clot formation; for a subset of patients invasive measures are also employed (coronary angiography and percutaneous coronary intervention). Basic principles of management are the same for all types of acute coronary syndrome. However, some important aspects of treatment depend on the presence or absence of elevation of the ST segment on the electrocardiogram, which classifies cases upon presentation to either ST segment elevation myocardial infarction (STEMI) or non-ST elevation acute coronary syndrome (NST-ACS); the latter includes unstable angina and non-ST elevation myocardial infarction (NSTEMI). Treatment is generally more aggressive for STEMI patients, and reperfusion therapy is more often reserved for them. Long term therapy is necessary for prevention of recurrent events and complications.