Intrinsic changes on automatism, conduction
... each stimulation period the train frequency was increased by 40 beats/min. Several trains were used until the maximum frequency with auricular capture was reached. The pause between two consecutive trains was 30 s. 2) Atrial stimulation with a short train of eight stimuli at a rate slightly higher t ...
... each stimulation period the train frequency was increased by 40 beats/min. Several trains were used until the maximum frequency with auricular capture was reached. The pause between two consecutive trains was 30 s. 2) Atrial stimulation with a short train of eight stimuli at a rate slightly higher t ...
Sutureless aortic valve replacement in patients with severe aortic
... There were no intra-procedural deaths. Five patients (2%) died during the hospital stay; however, none were considered to be valve-related. Twenty patients died during followup but it was not specified how many deaths were valve-related. Nine patients (4%) experienced peri-operative PVL, seven of w ...
... There were no intra-procedural deaths. Five patients (2%) died during the hospital stay; however, none were considered to be valve-related. Twenty patients died during followup but it was not specified how many deaths were valve-related. Nine patients (4%) experienced peri-operative PVL, seven of w ...
A Comparison of Mathematical Models of Left Ventricular
... assumption of a “fixed” aortic diameter has demonstrated that the EDM provides a useful approximation of both SV and subsequent CO [4, 5]. In addition, this information can be provided to the clinician on a near-instantaneous basis. Furthermore, although the EDM cannot measure EDV, both the velocity ...
... assumption of a “fixed” aortic diameter has demonstrated that the EDM provides a useful approximation of both SV and subsequent CO [4, 5]. In addition, this information can be provided to the clinician on a near-instantaneous basis. Furthermore, although the EDM cannot measure EDV, both the velocity ...
Recommendations for participation in leisure
... more comprehensive diagnostic evaluation is warranted to exclude underlying structural heart disease, which will be more often present in these patients. Moreover, associated ventricular tachyarrhythmias should be excluded, by Holter, exercise testing and sometimes even an invasive electrophysiologi ...
... more comprehensive diagnostic evaluation is warranted to exclude underlying structural heart disease, which will be more often present in these patients. Moreover, associated ventricular tachyarrhythmias should be excluded, by Holter, exercise testing and sometimes even an invasive electrophysiologi ...
Hands Only CPR
... • When a teen or adult suddenly collapses with cardiac arrest, his or her lungs and blood contain enough oxygen to keep vital organs healthy for the first few minutes, AS LONG AS someone provides high-quality chest compressions with minimal interruption to pump blood to the heart and brain! ...
... • When a teen or adult suddenly collapses with cardiac arrest, his or her lungs and blood contain enough oxygen to keep vital organs healthy for the first few minutes, AS LONG AS someone provides high-quality chest compressions with minimal interruption to pump blood to the heart and brain! ...
Feline Systemic Hypertension
... resolve hypertension. In certain cases, such as hyperthyroidism, antihypertensive medication will be initiated but decreased or discontinued once the primary disease has stabilized. When BP is elevated only mildly or moderately, specific antihypertensive therapy may not be necessary. Conversely, cat ...
... resolve hypertension. In certain cases, such as hyperthyroidism, antihypertensive medication will be initiated but decreased or discontinued once the primary disease has stabilized. When BP is elevated only mildly or moderately, specific antihypertensive therapy may not be necessary. Conversely, cat ...
Name That Murmur — Eponyms for the Astute
... ISSUE: explaThe Englishman Carey Coombs was a rheumatic Sutton’s law: bankJOB:robber fever specialist whose book, Rheumatic Heart Dis- nation that he robbed banks because “that’s eases (1924), was based on more than 600 of his where the money is.” Dock taught that if “the cases.16 The Carey Coombs m ...
... ISSUE: explaThe Englishman Carey Coombs was a rheumatic Sutton’s law: bankJOB:robber fever specialist whose book, Rheumatic Heart Dis- nation that he robbed banks because “that’s eases (1924), was based on more than 600 of his where the money is.” Dock taught that if “the cases.16 The Carey Coombs m ...
Central Pulse Pressure and Mortality in End
... Because CV and non-CV deaths are generally difficult to differentiate in the absence of autopsy— especially in ESRD subjects, in whom numerous CV and non-CV pathologies are often associated— and because CV cause is the leading cause of death in this population, only overall mortality was considered ...
... Because CV and non-CV deaths are generally difficult to differentiate in the absence of autopsy— especially in ESRD subjects, in whom numerous CV and non-CV pathologies are often associated— and because CV cause is the leading cause of death in this population, only overall mortality was considered ...
The hemudynamic effects of ventrkuiar pacing with and
... During baseline ventricular pacing and durlng ventricular pa&g at 130 pulses/mln with and wlthout dobutamlne, both groups of patlents had a significant decrease in cardiac index, stroke volume index, and stroke work index when the AV pacing interval was decreased from 130 to 0 msec. The observed dec ...
... During baseline ventricular pacing and durlng ventricular pa&g at 130 pulses/mln with and wlthout dobutamlne, both groups of patlents had a significant decrease in cardiac index, stroke volume index, and stroke work index when the AV pacing interval was decreased from 130 to 0 msec. The observed dec ...
Evidence of Incomplete Left Ventricular Relaxation in the Dog
... these conditions. Thus, an increase in end diastolic pressure relative to diastolic volume may result from incomplete relaxation under conditions of sufficiently rapid heart rate or sufficiently prolonged ventricular relaxation. Incomplete relaxation does not occur when the next beat begins more tha ...
... these conditions. Thus, an increase in end diastolic pressure relative to diastolic volume may result from incomplete relaxation under conditions of sufficiently rapid heart rate or sufficiently prolonged ventricular relaxation. Incomplete relaxation does not occur when the next beat begins more tha ...
Document
... skeleton of heart, the AV node provides only pathway for depolarizations to flow from atria to ventricles. • E. The AV bundle or bundle of His develops from a ringlike cluster of cells found at the AV ...
... skeleton of heart, the AV node provides only pathway for depolarizations to flow from atria to ventricles. • E. The AV bundle or bundle of His develops from a ringlike cluster of cells found at the AV ...
Long-Term Effects of Benidipine Hydrochloride on Severe Left
... rate（Table 1）. Percentage changes of the LVMI and free TIMP-1 to MMP-1 ratio were significantly larger in patients with severe LVH（−27% and −54%）than in patients with mild LVH（−12% and −25%）and no LVH（−4% and −11%）, respectively（p ＜ 0.05 ; Tables 2, 3）. Changes of the systolic blood pressure, but no ...
... rate（Table 1）. Percentage changes of the LVMI and free TIMP-1 to MMP-1 ratio were significantly larger in patients with severe LVH（−27% and −54%）than in patients with mild LVH（−12% and −25%）and no LVH（−4% and −11%）, respectively（p ＜ 0.05 ; Tables 2, 3）. Changes of the systolic blood pressure, but no ...
Original Contributions
... blockade with L-propranolol (0.01 and 0.05 mg/kg) on ischemia-induced VF vulnerability was evaluated in the psychologically stressed pig model and compared with Ringer's solution and D-propranolol (0.05 mg/kg). The ischemia of a maximum 15-minute left anterior descending coronary artery occlusion wa ...
... blockade with L-propranolol (0.01 and 0.05 mg/kg) on ischemia-induced VF vulnerability was evaluated in the psychologically stressed pig model and compared with Ringer's solution and D-propranolol (0.05 mg/kg). The ischemia of a maximum 15-minute left anterior descending coronary artery occlusion wa ...
Ventricular Tachycardia during Treatment with Modafinil
... isoenzymes and consequently has the potential to interact with drugs from all classes [5]. In placebo-controlled clinical trials and in post-marketing surveillance, neither drug-related ECG abnormalities nor cardiac arrhythmias were documented. We found in the literature one case report on frequent ...
... isoenzymes and consequently has the potential to interact with drugs from all classes [5]. In placebo-controlled clinical trials and in post-marketing surveillance, neither drug-related ECG abnormalities nor cardiac arrhythmias were documented. We found in the literature one case report on frequent ...
Restrictive Cardiomyopathy, Constrictive Pericarditis, and Cardiac
... (31). Therefore, clinicians must consider the diagnosis among patients seeking treatment with symptoms that may be consistent with the condition. The clinical presentation of patients with constrictive pericarditis may be nonspecific and indolent in the early stages. Symptoms may include fatigue or ...
... (31). Therefore, clinicians must consider the diagnosis among patients seeking treatment with symptoms that may be consistent with the condition. The clinical presentation of patients with constrictive pericarditis may be nonspecific and indolent in the early stages. Symptoms may include fatigue or ...
Implantable Ventricular Assist Devices and Total
... offered the following observations and conclusions: The available evidence comes from a single, well-designed and rigorously conducted randomized trial, known as the REMATCH study. (25) The study was a cooperative effort of Thoratec, Columbia University, and the National Institutes of Health. The ra ...
... offered the following observations and conclusions: The available evidence comes from a single, well-designed and rigorously conducted randomized trial, known as the REMATCH study. (25) The study was a cooperative effort of Thoratec, Columbia University, and the National Institutes of Health. The ra ...
Lecture 56: Development of Heart II
... Conducting system of the heart • A. At week 5, cardiac myocytes in sinus venosus region of primitive heart tube begin to undergo spontaneous electrical depolarizations at a faster rate than cardiac myocytes in other regions. • B. As dextral looping occurs, sinus venous becomes incorporated into ...
... Conducting system of the heart • A. At week 5, cardiac myocytes in sinus venosus region of primitive heart tube begin to undergo spontaneous electrical depolarizations at a faster rate than cardiac myocytes in other regions. • B. As dextral looping occurs, sinus venous becomes incorporated into ...
Cath-lab Crashes and postcardiotomy Failure
... – Direct PA cannula or graft – Cannulation of the acute margin of the right ventricle with a transpulmonic cannula ...
... – Direct PA cannula or graft – Cannulation of the acute margin of the right ventricle with a transpulmonic cannula ...
Ventricular long axis function: amplitudes and timings
... The burden of cardiovascular diseases will increase substantially in the most affluent nations of the world as more people live longer [1]. The ageing process and coronary artery disease (CAD) have a synergistic effect on the human heart. At the extremes of both conditions are two profoundly unique ...
... The burden of cardiovascular diseases will increase substantially in the most affluent nations of the world as more people live longer [1]. The ageing process and coronary artery disease (CAD) have a synergistic effect on the human heart. At the extremes of both conditions are two profoundly unique ...
Right ventricular cardiac myxoma. Histopathology diagnosis in
... Attar MN, Moore RK, Khan S. Left atrial myxoma presenting with ventricular fibrillation. J Cardiovasc Med 2008; 282-284. Cina SJ, Smialek JE, Burke AP, Virmani R, Hutchis GM. Primary cardiac tumors causing sudden death: a review of the literature. Am J ...
... Attar MN, Moore RK, Khan S. Left atrial myxoma presenting with ventricular fibrillation. J Cardiovasc Med 2008; 282-284. Cina SJ, Smialek JE, Burke AP, Virmani R, Hutchis GM. Primary cardiac tumors causing sudden death: a review of the literature. Am J ...
Treatment of arrhythmogenic right ventricular
... The growing knowledge regarding arrhythmic outcome, risk factors, and life-saving therapeutic interventions, make it particularly timely to critically address and place into perspective the issues relevant to the clinical management of ARVC/D patients. The present ITF consensus statement is a compre ...
... The growing knowledge regarding arrhythmic outcome, risk factors, and life-saving therapeutic interventions, make it particularly timely to critically address and place into perspective the issues relevant to the clinical management of ARVC/D patients. The present ITF consensus statement is a compre ...
Fulltext: english,
... them also had an associated peripheral pulmonar stenosis, none had phenotype characteristics of WilliamsBeuren syndrome. Other authors also reported cases with supravalvular aortic stenosis and peripheral pulmonary stenosis; M c K u s i c k on the basis of personal communication (4), C h i a r e l l ...
... them also had an associated peripheral pulmonar stenosis, none had phenotype characteristics of WilliamsBeuren syndrome. Other authors also reported cases with supravalvular aortic stenosis and peripheral pulmonary stenosis; M c K u s i c k on the basis of personal communication (4), C h i a r e l l ...
Hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy (HCM) is a primary disease of the myocardium (the muscle of the heart) in which a portion of the myocardium is hypertrophied (thickened) without any obvious cause, creating functional impairment of the cardiac muscle. It is a leading cause of sudden cardiac death in young athletes.The occurrence of hypertrophic cardiomyopathy is a significant cause of sudden unexpected cardiac death in any age group and as a cause of disabling cardiac symptoms. Younger people are likely to have a more severe form of hypertrophic cardiomyopathy.HCM is frequently asymptomatic until sudden cardiac death, and for this reason some suggest routinely screening certain populations for this disease.A cardiomyopathy is a disease that affects the muscle of the heart. With HCM, the myocytes (cardiac contractile cells) in the heart increase in size, which results in the thickening of the heart muscle. In addition, the normal alignment of muscle cells is disrupted, a phenomenon known as myocardial disarray. HCM also causes disruptions of the electrical functions of the heart. HCM is most commonly due to a mutation in one of nine sarcomeric genes that results in a mutated protein in the sarcomere, the primary component of the myocyte (the muscle cell of the heart). These are predominantly single-point missense mutations in the genes for beta-myosin heavy chain (MHC), myosin-binding protein C, cardiac troponinT, or tropomyosin. These mutations cause myofibril and myocyte structural abnormalities and possible deficiencies in force generation. Not to be confused with dilated cardiomyopathy or any other cardiomyopathy.While most literature so far focuses on European, American, and Japanese populations, HCM appears in all ethnic groups. The prevalence of HCM is about 0.2% to 0.5% of the general population.