Differences in coronary flow and myocardial metabolism at
... cath Corp.) was introduced into the right atrium through the right internal jugular vein. The great cardiac vein, which is the recipient of blood from the left anterior descending artery system, was cannulated through the coronary sinus. Hand injections of contrast dye were recorded on cine film, de ...
... cath Corp.) was introduced into the right atrium through the right internal jugular vein. The great cardiac vein, which is the recipient of blood from the left anterior descending artery system, was cannulated through the coronary sinus. Hand injections of contrast dye were recorded on cine film, de ...
- highlights for sports medicine from the European
... The FIFA SCA protocol places great emphasis, and hence practical training, on the removal of the collapsed player, both with ROSC ( pulse) or pulseless requiring CPR, from the field of play. The ERC makes reference to the removal of a player with ROSC from the field of play: “(The)…field of play is oft ...
... The FIFA SCA protocol places great emphasis, and hence practical training, on the removal of the collapsed player, both with ROSC ( pulse) or pulseless requiring CPR, from the field of play. The ERC makes reference to the removal of a player with ROSC from the field of play: “(The)…field of play is oft ...
AHA/ACC Scientific Statement
... Copies: This document is available on the World Wide Web sites of the American Heart Association (my.americanheart.org) and the American College of Cardiology (www.acc.org). A copy of the document is available at http://my.americanheart.org/statements by selecting either the “By Topic” link or the “ ...
... Copies: This document is available on the World Wide Web sites of the American Heart Association (my.americanheart.org) and the American College of Cardiology (www.acc.org). A copy of the document is available at http://my.americanheart.org/statements by selecting either the “By Topic” link or the “ ...
Correspondence Latent pre-excitation: exposure of
... tricular node who were matched for anterograde through the His-Purkinje system." Concealed conrefractory period showed similar ventricular rates duction of atrial extrasystoles can be explained on the during atrial fibrillation. They had expected a slower basis of hyperpolarisation of the pacemaker ...
... tricular node who were matched for anterograde through the His-Purkinje system." Concealed conrefractory period showed similar ventricular rates duction of atrial extrasystoles can be explained on the during atrial fibrillation. They had expected a slower basis of hyperpolarisation of the pacemaker ...
Use of vasopressin in in-hospital cardiac arrest
... The purpose of this study is to evaluate the potential USE of vasopressin as an adjunct to epinephrine in the resuscitation of patients who experience cardiac arrest. Approximately half a million people each year suffer from sudden cardiac death in this country [1]. The outcome of resuscitation effo ...
... The purpose of this study is to evaluate the potential USE of vasopressin as an adjunct to epinephrine in the resuscitation of patients who experience cardiac arrest. Approximately half a million people each year suffer from sudden cardiac death in this country [1]. The outcome of resuscitation effo ...
Changes to Echocardiography-Derived Left Ventricular Filling
... growing elderly patient population and a major risk factor for heart failure (HF) 1,2 3,4,5 In the United States, more Medicare dollars are spent on the diagnosis and treatment of HF than any other diagnosis. 6 A recent study of 1000 elderly surgical patients found that LVDD was found preoperatively ...
... growing elderly patient population and a major risk factor for heart failure (HF) 1,2 3,4,5 In the United States, more Medicare dollars are spent on the diagnosis and treatment of HF than any other diagnosis. 6 A recent study of 1000 elderly surgical patients found that LVDD was found preoperatively ...
Dual-source cardiac computed tomography
... image reconstruction window starting at 70% of the R-toR-interval provided optimal image quality. Similarly, Johnson et al. [21] published early results of 24 patients with heart rates between 44 and 92 bpm and did not find significiant impairment of image quality at high heart rates. They reported ...
... image reconstruction window starting at 70% of the R-toR-interval provided optimal image quality. Similarly, Johnson et al. [21] published early results of 24 patients with heart rates between 44 and 92 bpm and did not find significiant impairment of image quality at high heart rates. They reported ...
Effects of calcium, parathyroid hormone and
... Ninety-nine percent of total body calcium is located in the skeleton, and only one percent of this is rapidly exchangeable with the nonosseon extracellular calcium. This calcium pool, in turn, is in equilibrium with the intracellular calcium of the body. In blood, 35-40 % of calcium is bound to prot ...
... Ninety-nine percent of total body calcium is located in the skeleton, and only one percent of this is rapidly exchangeable with the nonosseon extracellular calcium. This calcium pool, in turn, is in equilibrium with the intracellular calcium of the body. In blood, 35-40 % of calcium is bound to prot ...
Response of the oxygen pulse during exercise in
... The oxygen pulse (oxygen uptake divided by heart rate) equals stroke volume multiplied by the arterial-venous oxygen difference. In healthy subjects, the oxygen pulse continuously increases during exercise (Wasserman’s Principles of Exercise Testing and Interpretation: Including Pathophysiology and ...
... The oxygen pulse (oxygen uptake divided by heart rate) equals stroke volume multiplied by the arterial-venous oxygen difference. In healthy subjects, the oxygen pulse continuously increases during exercise (Wasserman’s Principles of Exercise Testing and Interpretation: Including Pathophysiology and ...
View PDF - CiteSeerX
... upstroke of the action potential. Dynamics of the recovery phase and restitution properties of the action potential are determined by the time course of r, which is primarily controlled by the term ðe þ ðm1 rÞ=ðm2 þ V ÞÞ: Apart from the threshold parameter, a, the parameters of this model (k, m1, m2 ...
... upstroke of the action potential. Dynamics of the recovery phase and restitution properties of the action potential are determined by the time course of r, which is primarily controlled by the term ðe þ ðm1 rÞ=ðm2 þ V ÞÞ: Apart from the threshold parameter, a, the parameters of this model (k, m1, m2 ...
Pdf version
... with metabolic syndrome (MS) and TDS on autonomic balance assessed by heart rate variability (HRV) in 24‑hour Holter monitoring. Patients and methods The study included 80 men divided into 3 groups: with MS and TDS (MS+TDS+, n = 30), with MS and without TDS (MS+TDS–, n = 25), and healthy controls ...
... with metabolic syndrome (MS) and TDS on autonomic balance assessed by heart rate variability (HRV) in 24‑hour Holter monitoring. Patients and methods The study included 80 men divided into 3 groups: with MS and TDS (MS+TDS+, n = 30), with MS and without TDS (MS+TDS–, n = 25), and healthy controls ...
THE EFFECTS OF EPHEDRINE ON THE HEART RATE OF THE EMBRYO
... calcium into the cardiac muscle cells. • The calcium influx leads to an increase in heart rate and in cardiac muscle contraction. • The vasodilatation of coronary arteries results in increased cardiac blood flow as well. ...
... calcium into the cardiac muscle cells. • The calcium influx leads to an increase in heart rate and in cardiac muscle contraction. • The vasodilatation of coronary arteries results in increased cardiac blood flow as well. ...
Myxoma of the Left Atrium
... was in excellent health until 3 months prior to admission. Her first symptom was a nonproductive cough which led her to consult a physician, who heard an opening snap and diastolic rumble typical of mitral stenosis. Mild anemia was present, and a course of oral iron therapy was prescribed. Although ...
... was in excellent health until 3 months prior to admission. Her first symptom was a nonproductive cough which led her to consult a physician, who heard an opening snap and diastolic rumble typical of mitral stenosis. Mild anemia was present, and a course of oral iron therapy was prescribed. Although ...
Chapter 9
... Pulmonary arterial hypertension is a condition with a poor prognosis. Nevertheless, life expectancy may vary widely among patients [1]. Assessment of patient prognosis has gradually shifted from evaluation of histopathology [2], and hemodynamics [1] towards evaluation of exercise capacity [3], non-i ...
... Pulmonary arterial hypertension is a condition with a poor prognosis. Nevertheless, life expectancy may vary widely among patients [1]. Assessment of patient prognosis has gradually shifted from evaluation of histopathology [2], and hemodynamics [1] towards evaluation of exercise capacity [3], non-i ...
the slide set
... Results on predictors for stent restenosis Several predictors for stent restenosis have been identified. Among these predictors, diabetes mellitus, current smoking, stent diameter and length, and age have been shown to stimulate restenosis, while trimetazidine has been shown to prevent restenosis. ...
... Results on predictors for stent restenosis Several predictors for stent restenosis have been identified. Among these predictors, diabetes mellitus, current smoking, stent diameter and length, and age have been shown to stimulate restenosis, while trimetazidine has been shown to prevent restenosis. ...
Evolution of Paroxysmal Atrial Fibrillation to Persistent or Permanent
... Introduction: Paroxysmal atrial fibrillation (PAF) eventually progresses to persistent and permanent AF. The predictors of progression from PAF to persistent and permanent AF are poorly understood. Methods: Electronic medical records of 437 patients with PAF were reviewed in a retrospective cohort s ...
... Introduction: Paroxysmal atrial fibrillation (PAF) eventually progresses to persistent and permanent AF. The predictors of progression from PAF to persistent and permanent AF are poorly understood. Methods: Electronic medical records of 437 patients with PAF were reviewed in a retrospective cohort s ...
Assessment of Cardiac Autonomic Regulation in Children with
... been used as a marker of sympathovagal balance in some studies (Malliani 1999), however, because LF power can reflect both sympathetic and parasympathetic activity, this interpretation can at times be misleading (Eckberg 1997). Although the majority of the total power in the 24-hour HRV power spectr ...
... been used as a marker of sympathovagal balance in some studies (Malliani 1999), however, because LF power can reflect both sympathetic and parasympathetic activity, this interpretation can at times be misleading (Eckberg 1997). Although the majority of the total power in the 24-hour HRV power spectr ...
Three-dimensional and molecular analysis of the developing human
... Data Supplement (accessible at http://circ.ahajournals.org). Formation and Growth of the Primary Heart Tube First we analyzed the formation and growth of the primary heart tube in one stage 9, four stage 10 and three stage 11 embryos, which correspond to approximately 20-25 days of human development ...
... Data Supplement (accessible at http://circ.ahajournals.org). Formation and Growth of the Primary Heart Tube First we analyzed the formation and growth of the primary heart tube in one stage 9, four stage 10 and three stage 11 embryos, which correspond to approximately 20-25 days of human development ...
PCI farahani ersali
... However more studies requisiteness to confirm these justifications. All improvements observed in this study were more significant in comparison to similar previous studies in the literature. This discrepancy may be difference in basic ventricular diastolic dysfunction and ...
... However more studies requisiteness to confirm these justifications. All improvements observed in this study were more significant in comparison to similar previous studies in the literature. This discrepancy may be difference in basic ventricular diastolic dysfunction and ...
All Hands Meeting 2005
... Why model the heart? Heart disease is an important health problem. Worldwide, cardiovascular disease causes 19 million deaths annually, over 5 million between the ages of 30 and 69 years. Spectrum of acquired and congenital heart disease, multiple disease mechanisms. All disease mechanisms a ...
... Why model the heart? Heart disease is an important health problem. Worldwide, cardiovascular disease causes 19 million deaths annually, over 5 million between the ages of 30 and 69 years. Spectrum of acquired and congenital heart disease, multiple disease mechanisms. All disease mechanisms a ...
A Patient`s Guide - Amarillo Heart Group
... Following a heart attack, the damaged heart may not pump as well as a normal heart. This may lead to heart failure. In heart failure, fluid tends to build up in the lungs and other parts of the body. Common symptoms of heart failure include shortness of breath, swelling of the feet and legs, and fat ...
... Following a heart attack, the damaged heart may not pump as well as a normal heart. This may lead to heart failure. In heart failure, fluid tends to build up in the lungs and other parts of the body. Common symptoms of heart failure include shortness of breath, swelling of the feet and legs, and fat ...
Ectopia Cordis in a Male Holstein Friesian Calf
... and assumed that these abnormalities were caused by the mechanical action of the EC [15]. Abnormal ossifications of the manubrium is reported in calves affected with several kinds of congenital anomalies [16, 17]. Malformation of the sternum suggested that the manner of attachment of the bilateral c ...
... and assumed that these abnormalities were caused by the mechanical action of the EC [15]. Abnormal ossifications of the manubrium is reported in calves affected with several kinds of congenital anomalies [16, 17]. Malformation of the sternum suggested that the manner of attachment of the bilateral c ...
Cardiac contractility modulation
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Cardiac contractility modulation (CCM) is a treatment for patients with moderate to severe left ventricular systolic heart failure (NYHA class II–IV). The short- and long-term use of this therapy enhances both the strength of ventricular contraction and the heart’s pumping capacity. The CCM mechanism is based on stimulation of the cardiac muscle by non-excitatory electrical signals (NES). CCM treatment is delivered by a pacemaker-like device that applies the NES, adjusted to and synchronized with the electrical action in the cardiac cycle.In CCM therapy, electrical stimulation is applied to the cardiac muscle during the absolute refractory period. In this phase of the cardiac cycle, electrical signals cannot trigger new cardiac muscle contractions, hence this type of stimulation is known as a non-excitatory stimulation. However, the electrical CCM signals increase the influx of calcium ions into the cardiac muscle cells (cardiomyocytes). In contrast to other electrical stimulation treatments for heart failure, such as pacemaker therapy or implantable cardioverter defibrillators (ICD), CCM does not affect the cardiac rhythm directly. Rather, the aim is to enhance the heart’s natural contraction (the native cardiac contractility) sustainably over long periods of time. Furthermore, unlike most interventions that increase cardiac contractility, CCM is not associated with an unfavorable increase in oxygen demand by the heart (measured in terms of Myocardial Oxygen Consumption or MVO2). This may be explained by the beneficial effect CCM has in improving cardiac efficiency. A meta-analysis in 2014 and an overview of device-based treatment options in heart failure in 2013 concluded that CCM treatment is safe, that it is generally beneficial to patients and that CCM treatment increases the exercise tolerance (ET) and quality of life (QoL) of patients. Furthermore, preliminary long-term survival data shows that CCM is associated with lower long-term mortality in heart failure patients when compared with expected rates among similar patients not treated with CCM.