Supplemental Text Box 2 Parasympathetic Innervation of the Heart
... modulation of esophageal tone in synchrony with respiration10—suggest complex functional interactions between the NA and DMN. In other words, although the main text of the article presents the NA and DMN as functionally distinct, some functional overlap, as yet undetermined, appears likely. Other is ...
... modulation of esophageal tone in synchrony with respiration10—suggest complex functional interactions between the NA and DMN. In other words, although the main text of the article presents the NA and DMN as functionally distinct, some functional overlap, as yet undetermined, appears likely. Other is ...
Anatomy and Physiology
... and more overlapping of actin and myosin. also why with increased volume (EDV-end diastolic volume) cause increased contraction because stretch out sarcomere and have more to come back to resting. - there are NO graded contractions in cardiac muscle Functional syncytium – often used to describe myoc ...
... and more overlapping of actin and myosin. also why with increased volume (EDV-end diastolic volume) cause increased contraction because stretch out sarcomere and have more to come back to resting. - there are NO graded contractions in cardiac muscle Functional syncytium – often used to describe myoc ...
Tachycardia-induced cardiomyopathy in a cat
... At a recheck 1 week later the cat was reportedly behaving normally. Heart rate was between 200 and 280 min–1, the rhythm was still irregularly irregular, and the remainder of the physical examination unremarkable. Institution of additional antiarrhythmic treatments such as digoxin or diltiazem was d ...
... At a recheck 1 week later the cat was reportedly behaving normally. Heart rate was between 200 and 280 min–1, the rhythm was still irregularly irregular, and the remainder of the physical examination unremarkable. Institution of additional antiarrhythmic treatments such as digoxin or diltiazem was d ...
c34f30ef92c9b40
... • Are the P waves regular ? • Is the P wave normal and upright in lead II ? • Do all P waves look alike ...
... • Are the P waves regular ? • Is the P wave normal and upright in lead II ? • Do all P waves look alike ...
Cardiac Tamponade Avi Patel, M.D. August 1, 2005 Introduction The
... The pericardium is made of two layers: the inner visceral pericardium closely opposed to the heart and outer, fiberous parietal pericardium. About 20-50cc of fluid is usually present in the potential space between these two layers. Expansion of this space with hemodynamic compromise is a medical eme ...
... The pericardium is made of two layers: the inner visceral pericardium closely opposed to the heart and outer, fiberous parietal pericardium. About 20-50cc of fluid is usually present in the potential space between these two layers. Expansion of this space with hemodynamic compromise is a medical eme ...
A Prediction Rule to Identify Low-risk Patients with Heart Failure
... the ED during the study period. Only the first hospitalization of each patient in 1999 was included to obtain independent observations for the statistical modeling. We excluded patients who did not have pulse, systolic blood pressure, and respiratory rate data available from the ED. We used administ ...
... the ED during the study period. Only the first hospitalization of each patient in 1999 was included to obtain independent observations for the statistical modeling. We excluded patients who did not have pulse, systolic blood pressure, and respiratory rate data available from the ED. We used administ ...
Epicardial Approach: Technique to Prevent Complications
... of the Watchman clinical trials and the carefully considered FDA approval of the therapy in the USA have firmly positioned Watchman as a key therapy consideration for all patients with atrial fibrillation." Dr Karen Phillips of Heart Care Partners, Brisbane Australia is reassured by the latest publi ...
... of the Watchman clinical trials and the carefully considered FDA approval of the therapy in the USA have firmly positioned Watchman as a key therapy consideration for all patients with atrial fibrillation." Dr Karen Phillips of Heart Care Partners, Brisbane Australia is reassured by the latest publi ...
Congestive heart failure symptoms in patients with
... registry we retrospectively defined a clinical subset of patients with significant congestive heart failure and well preserved left ventricular systolic function and determined their long-term survival . The goals ofthis CASS registry analysis are twofold: 1) to compare the clinical characteristics ...
... registry we retrospectively defined a clinical subset of patients with significant congestive heart failure and well preserved left ventricular systolic function and determined their long-term survival . The goals ofthis CASS registry analysis are twofold: 1) to compare the clinical characteristics ...
Chapter 17 The cardivascular system I the heart
... A. An impulse in a ventricular contractile fiber is characterized by rapid depolarization, plateau, and repolarization. B. The refractory period of a cardiac muscle fiber (the time interval when a second contraction cannot be triggered) is longer than the contraction itself. XII. ELECTROCARDIOGRAM A ...
... A. An impulse in a ventricular contractile fiber is characterized by rapid depolarization, plateau, and repolarization. B. The refractory period of a cardiac muscle fiber (the time interval when a second contraction cannot be triggered) is longer than the contraction itself. XII. ELECTROCARDIOGRAM A ...
New oral anticoagulants and antiplatelet use: Stroke prevention in
... Use of the HAS-BLED score should be used to identify modifiable bleeding risks that need to be addressed, but should not be used on its own to exclude patients from OAC therapy (LoE = B). ...
... Use of the HAS-BLED score should be used to identify modifiable bleeding risks that need to be addressed, but should not be used on its own to exclude patients from OAC therapy (LoE = B). ...
Chapter 18 Heart
... • Contraction of a cardiac muscle cell is produced by an increase in calcium ion concentration around myofibrils 20% of calcium ions required for a contraction enter cell membrane through slow channels during plateau phase This extracellular Ca2+ triggers release of calcium ion reserves from sarco ...
... • Contraction of a cardiac muscle cell is produced by an increase in calcium ion concentration around myofibrils 20% of calcium ions required for a contraction enter cell membrane through slow channels during plateau phase This extracellular Ca2+ triggers release of calcium ion reserves from sarco ...
The clinical application of ACE inhibitors in coronary artery disease
... months and, at the end of this time, there was no difference in the restenosis rates. The ‘big brother’ of MERCATOR was MARCATOR.4 This studied 1,436 post-angioplasty subjects, who received 2, 10 or 20 mg/day cilazapril or placebo for six months, beginning at angioplasty. These larger doses are 2–4 ...
... months and, at the end of this time, there was no difference in the restenosis rates. The ‘big brother’ of MERCATOR was MARCATOR.4 This studied 1,436 post-angioplasty subjects, who received 2, 10 or 20 mg/day cilazapril or placebo for six months, beginning at angioplasty. These larger doses are 2–4 ...
Right Ventricular Failure in Idiopathic Pulmonary Arterial - VU-dare
... maintain cardiac output. For this, RV O2 consumption (MVO2) must increase by augmentation of O2 supply and/or improvement of mechanical efficiency–ratio of power output to MVO2. In IPAH with overt RV failure, however, there is evidence that O2 supply (perfusion) reserve is reduced, leaving only incr ...
... maintain cardiac output. For this, RV O2 consumption (MVO2) must increase by augmentation of O2 supply and/or improvement of mechanical efficiency–ratio of power output to MVO2. In IPAH with overt RV failure, however, there is evidence that O2 supply (perfusion) reserve is reduced, leaving only incr ...
Electrical Storm: Incidence, Prognosis and Therapy
... shocks. After one to three ablations, 89% of patients did not have any inducible clinical VT by programmed electrical stimulation. At a median follow-up of 22 months, 92% of patients was free of electrical storm and 66% was free of VT recurrence.48 Recently, Deneke et al. studied 32 electrical storm ...
... shocks. After one to three ablations, 89% of patients did not have any inducible clinical VT by programmed electrical stimulation. At a median follow-up of 22 months, 92% of patients was free of electrical storm and 66% was free of VT recurrence.48 Recently, Deneke et al. studied 32 electrical storm ...
Management of patients with ventricular tachycardia in Europe
... biopsy, and genetic testing were seldom employed. Magnetic resonance imaging was frequently used in patients with less defined substrate, which is in line with the guidelines.2,4 Meanwhile, EP study was employed in only half the centres, which was less frequent compared with the results of an earlie ...
... biopsy, and genetic testing were seldom employed. Magnetic resonance imaging was frequently used in patients with less defined substrate, which is in line with the guidelines.2,4 Meanwhile, EP study was employed in only half the centres, which was less frequent compared with the results of an earlie ...
Outcome in cardiac arrest patients found to have cardiac standstill
... are brought to the ED for continued management. Resuscitation of a patient in cardiac arrest requires a great deal of time and ED resources. The dilemma with patients presenting with ongoing CPR is when to cease unsuccessful resuscitative efforts. Departmental guidelines are often based on the durat ...
... are brought to the ED for continued management. Resuscitation of a patient in cardiac arrest requires a great deal of time and ED resources. The dilemma with patients presenting with ongoing CPR is when to cease unsuccessful resuscitative efforts. Departmental guidelines are often based on the durat ...
BIOL242Chap18HeartOCT2012
... cardiac cycle shorten, but particularly ventricular diastole (less time spent ...
... cardiac cycle shorten, but particularly ventricular diastole (less time spent ...
Arryhythmias post-TOF repair surgical repair
... Anti-arrhythmic drugs – Procainamide – Amiodarone – Esmolol ...
... Anti-arrhythmic drugs – Procainamide – Amiodarone – Esmolol ...
Coronary Artery Bypass Grafting in Patients With Low Ejection Fraction
... postoperative morbidity and mortality compared with patients with normal left ventricular function.3,7 However, previous reports have been limited by inadequate sample sizes. This study reviews a large, mandatory statewide database to evaluate the risk factors and outcomes of CABG patients with poor ...
... postoperative morbidity and mortality compared with patients with normal left ventricular function.3,7 However, previous reports have been limited by inadequate sample sizes. This study reviews a large, mandatory statewide database to evaluate the risk factors and outcomes of CABG patients with poor ...
PDF - Circulation: Cardiovascular Imaging
... Syndrome at 3 months old presented to a pediatric cardiologist at 5 years of age after experiencing a near-syncopal event involving pallor, dizziness, and nausea. Her medical history was only significant for multiple surgical resections of soft tissue tumors in the umbilical and in the vaginal areas ...
... Syndrome at 3 months old presented to a pediatric cardiologist at 5 years of age after experiencing a near-syncopal event involving pallor, dizziness, and nausea. Her medical history was only significant for multiple surgical resections of soft tissue tumors in the umbilical and in the vaginal areas ...
Heart
... high as 100, that of a infant may be as high as 120, and that of a near term fetus as high of a 140 beats per minute. These higher rates are not related to age, but to rather to size; the smaller the individual the faster the rate. ...
... high as 100, that of a infant may be as high as 120, and that of a near term fetus as high of a 140 beats per minute. These higher rates are not related to age, but to rather to size; the smaller the individual the faster the rate. ...
CYCLE III:
... Arterial pressure – results from the extension of the elastic walls of the arterial vessels by the blood present in their bed. This blood volume depends on the output of the left ventricle of the heart and the possibility of outflow through resistance vessels. Jugular venous pulse – phlebogram. Phys ...
... Arterial pressure – results from the extension of the elastic walls of the arterial vessels by the blood present in their bed. This blood volume depends on the output of the left ventricle of the heart and the possibility of outflow through resistance vessels. Jugular venous pulse – phlebogram. Phys ...
Predictive Value of Beat-to-Beat QT Variability across Continuum of
... patients with LVEF between 35% and 40% (14)] and (2) predominantly decreased heart rate variability and out-of-proportion unchanged or mildly increased QT variance [e.g., as reported in MADIT II females (25)]. The second scenario was observed in MUSIC HF patients in this study. Importantly, in this ...
... patients with LVEF between 35% and 40% (14)] and (2) predominantly decreased heart rate variability and out-of-proportion unchanged or mildly increased QT variance [e.g., as reported in MADIT II females (25)]. The second scenario was observed in MUSIC HF patients in this study. Importantly, in this ...
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.