Genotype-phenotype correlation in long QT syndrome
... which results in shorter ventricular repolarization at fast heart rates, which prevents afterdepolarization caused by b1-adrenergic stimulation. Hence it is not surprising that patients with LQT1, who have diminished IKs are prone to develop prolonged ventricular repolarization during exercise, wher ...
... which results in shorter ventricular repolarization at fast heart rates, which prevents afterdepolarization caused by b1-adrenergic stimulation. Hence it is not surprising that patients with LQT1, who have diminished IKs are prone to develop prolonged ventricular repolarization during exercise, wher ...
Waldenström macroglobulinemia and amyloid cardiomyopathy—an
... Amyloid cardiomyopathy is especially devastating for WM patients, especially primary light chain (AL) amyloidosis. Cardiac amyloidosis is characterized by progressive diastolic and systolic dysfunction and arrhythmia. Cardiac amyloidosis symptom is similar to restrictive cardiomyopathy. The symptom ...
... Amyloid cardiomyopathy is especially devastating for WM patients, especially primary light chain (AL) amyloidosis. Cardiac amyloidosis is characterized by progressive diastolic and systolic dysfunction and arrhythmia. Cardiac amyloidosis symptom is similar to restrictive cardiomyopathy. The symptom ...
PDF - Cardio
... the dynamic pacing protocol yielded significant differences in restitution kinetics between patients with and patients without structural heart disease, but no significant difference was observed using the S2 pacing protocol. The authors speculated that the dynamic protocol may improve the predictiv ...
... the dynamic pacing protocol yielded significant differences in restitution kinetics between patients with and patients without structural heart disease, but no significant difference was observed using the S2 pacing protocol. The authors speculated that the dynamic protocol may improve the predictiv ...
Pediatric Pulseless Ventricular Tachycardia
... symptoms of pulseless ventricular tachycardia in a child with a history of heart transplantation presenting with syncopal episode. In addition, learners will review stabilization using PALS algorithms and medical management of a patient with ventricular tachycardia. Furthermore, learners will review ...
... symptoms of pulseless ventricular tachycardia in a child with a history of heart transplantation presenting with syncopal episode. In addition, learners will review stabilization using PALS algorithms and medical management of a patient with ventricular tachycardia. Furthermore, learners will review ...
Heart Size Evaluation of Indonesian Domestic House Cat by Motion
... similar compared with those in other cat breeds with the same average weight. The left atrium internal diameter and the aorta diameter of the Indonesian DHC were relatively smaller. However, the left atrium and aorta diameter ratio were similar to the result in other cat breeds with the same average ...
... similar compared with those in other cat breeds with the same average weight. The left atrium internal diameter and the aorta diameter of the Indonesian DHC were relatively smaller. However, the left atrium and aorta diameter ratio were similar to the result in other cat breeds with the same average ...
Cardiovascular Complications of Cocaine Abuse
... Usually no other cardiac risk factors Toxicology screen EKG: STEMI, T-wave changes, arrhythmias, LVH, LAD ...
... Usually no other cardiac risk factors Toxicology screen EKG: STEMI, T-wave changes, arrhythmias, LVH, LAD ...
Complex intracardiac nervous system
... cord segments from Th1 to Th5 (10, 13). Sympathetic nerves possesse also sensory fibers that transmit information from nociceptors through dorsal root ganglia to the spinal cord and consequently to the brain (14). Parasympathetic innervation of the heart by vagus nerve originate in neurons localized ...
... cord segments from Th1 to Th5 (10, 13). Sympathetic nerves possesse also sensory fibers that transmit information from nociceptors through dorsal root ganglia to the spinal cord and consequently to the brain (14). Parasympathetic innervation of the heart by vagus nerve originate in neurons localized ...
4.4. Mitral valve prosthesis vs. plasty and final result of the
... Atrial fibrillation (AF) is one of the most common heart rhythm disturbances. The prevalence of this disorder in general population is 0.4 – 0.9%. AF incidence depends on the age of the patient: the incidence of AF in patients older than 60 years increases twofold every decade and in patients over 6 ...
... Atrial fibrillation (AF) is one of the most common heart rhythm disturbances. The prevalence of this disorder in general population is 0.4 – 0.9%. AF incidence depends on the age of the patient: the incidence of AF in patients older than 60 years increases twofold every decade and in patients over 6 ...
Comparison of QT Dispersion With Left Ventricular Mass Index in
... the presence of this association (6) that was in agreement with our results; however, our results had less scattering that revealed a stronger association between them. Moreover, diagnostic values of electrocardiographic indices were not investigated in the aforementioned study. Our study showed tha ...
... the presence of this association (6) that was in agreement with our results; however, our results had less scattering that revealed a stronger association between them. Moreover, diagnostic values of electrocardiographic indices were not investigated in the aforementioned study. Our study showed tha ...
A New Index for Quantitative Ballistocardiog
... mass equals body weight and velocity may be derived from the ballistocardiogram by measuring the distance traveled by the body and the time employed to cover it. In reality the ballistocardiogram shows that the movement of the body during systole is not unidirectional, inasmuch as it is recorded as ...
... mass equals body weight and velocity may be derived from the ballistocardiogram by measuring the distance traveled by the body and the time employed to cover it. In reality the ballistocardiogram shows that the movement of the body during systole is not unidirectional, inasmuch as it is recorded as ...
Pericardium - mStudyGroup.com
... diaphragm, the fibrous pericardium is made of tough connective tissue and is relatively no distensible. This rigidity prevents rapid overfilling of the heart, but can have several serious clinical consequences (cardiac tamponade).It is firmly attached below to central tendon of Diaphragm. It is atta ...
... diaphragm, the fibrous pericardium is made of tough connective tissue and is relatively no distensible. This rigidity prevents rapid overfilling of the heart, but can have several serious clinical consequences (cardiac tamponade).It is firmly attached below to central tendon of Diaphragm. It is atta ...
haemodynamics in tresus nuttallii and certain other bivalves
... not noticeable until the ventricle is drastically stretched. The wall of the aortic bulb, which at first looks like the unstretched ventricle, in uniformly thick with no membranous 'windows' between muscle strands. Perhaps because valves are not conspicuous unless observed in a beating heart, we fou ...
... not noticeable until the ventricle is drastically stretched. The wall of the aortic bulb, which at first looks like the unstretched ventricle, in uniformly thick with no membranous 'windows' between muscle strands. Perhaps because valves are not conspicuous unless observed in a beating heart, we fou ...
Cardiac Emergency
... Why? an endogenous purine nucleoside used to slow conduction through the AV node; to interrupt AV nodal reentry pathways and to restore normal sinus rhythm from PSVT When? administered for the conversion of PSVT How? Give 6mg IVP over 1 - 3 seconds; then if indicated, give12mg IVP. May repeat a seco ...
... Why? an endogenous purine nucleoside used to slow conduction through the AV node; to interrupt AV nodal reentry pathways and to restore normal sinus rhythm from PSVT When? administered for the conversion of PSVT How? Give 6mg IVP over 1 - 3 seconds; then if indicated, give12mg IVP. May repeat a seco ...
Tetrology of fallot
... aorta dextroposition, and RV hypertrophy. The mortality rate in untreated patients reaches 50% by age 6 years, but in the present era of cardiac surgery, children with simple forms of tetralogy of Fallot enjoy good long-term survival with an excellent quality of life ...
... aorta dextroposition, and RV hypertrophy. The mortality rate in untreated patients reaches 50% by age 6 years, but in the present era of cardiac surgery, children with simple forms of tetralogy of Fallot enjoy good long-term survival with an excellent quality of life ...
Sunao Tawara: Discoverer of the atrioventricular conduction system
... in 1906, not only solved the problem of the mechanism for a synchronous contraction of four cardiac chambers, but also gave Einthoven and other electrocardiographers a powerful theoretical basis for interpreting the electrocardiogram. Tawara’s discovery of the AV conduction system aided the rapid po ...
... in 1906, not only solved the problem of the mechanism for a synchronous contraction of four cardiac chambers, but also gave Einthoven and other electrocardiographers a powerful theoretical basis for interpreting the electrocardiogram. Tawara’s discovery of the AV conduction system aided the rapid po ...
Role of Sodium Channel on Cardiac Action Potential
... worldwide. In most cases, it's caused by abnormal action potential propagation that leads to cardiac arrhythmia. The aim of this article is to study the abnormal action potential ...
... worldwide. In most cases, it's caused by abnormal action potential propagation that leads to cardiac arrhythmia. The aim of this article is to study the abnormal action potential ...
Rate vs rhythm control in patients with atrial fibrillation
... By screening of records obtained Medline and CENTRAL we found 198 citations. One-hundred fifty eight records were not relevant and/ or did not have the required design (RCT). Remaining 40 studies were selected for full-text assessment and some were excluded for the following reasons: seventeen did no ...
... By screening of records obtained Medline and CENTRAL we found 198 citations. One-hundred fifty eight records were not relevant and/ or did not have the required design (RCT). Remaining 40 studies were selected for full-text assessment and some were excluded for the following reasons: seventeen did no ...
Heart rate variability by Poincaré plot and spectral analysis in young
... In this study we have found that young IDDM patients, compared to healthy people, have reduced HRV. This is a known phenomenon but the new message is that the reduced HRV in IDDM patients can also be found with the use of PP analysis. Moreover, it appears that PP analysis was more sensitive than spe ...
... In this study we have found that young IDDM patients, compared to healthy people, have reduced HRV. This is a known phenomenon but the new message is that the reduced HRV in IDDM patients can also be found with the use of PP analysis. Moreover, it appears that PP analysis was more sensitive than spe ...
Atrial Fibrillation: Upstream Therapies
... Tachy-pacing downregulated L-type calcium channel alpha subunit expression was greatly attenuated by simvastatin. Retrospective meta-analysis have suggested a beneficial effect in AF in man Statin therapy has also been found to reduce the risk for first ventricular arrhythmia in pts with CAD a ...
... Tachy-pacing downregulated L-type calcium channel alpha subunit expression was greatly attenuated by simvastatin. Retrospective meta-analysis have suggested a beneficial effect in AF in man Statin therapy has also been found to reduce the risk for first ventricular arrhythmia in pts with CAD a ...
Advances In Cardiology, Interventional Cardiology, and
... Adult Centers Focused on CHD “There are about 35 or more abnormalities of the heart that can occur during fetal development,” says Marlon S. Rosenbaum, MD, Director of the Schneeweiss Adult Congenital Heart Center at NewYork-Presbyterian/Columbia, who came to Columbia in 1987 to create one of the fi ...
... Adult Centers Focused on CHD “There are about 35 or more abnormalities of the heart that can occur during fetal development,” says Marlon S. Rosenbaum, MD, Director of the Schneeweiss Adult Congenital Heart Center at NewYork-Presbyterian/Columbia, who came to Columbia in 1987 to create one of the fi ...
Sudden death
... Affects males over 60 years old or younger with bicuspid V. Ventricular hypertrophy > 700 g Aortic Stenosis + Ventricular hypertrophy Blood insufficient ...
... Affects males over 60 years old or younger with bicuspid V. Ventricular hypertrophy > 700 g Aortic Stenosis + Ventricular hypertrophy Blood insufficient ...
Application of Lower Sternal Incision with On
... Since the 1990s, the technique, which includes incision of the skin in the lower sternum, partial splitting of the upper sternum and maintaining an intact upper part of the sternum, has been used for clinical purposes. This technique was initially applied in off-pump coronary artery bypass graft. Si ...
... Since the 1990s, the technique, which includes incision of the skin in the lower sternum, partial splitting of the upper sternum and maintaining an intact upper part of the sternum, has been used for clinical purposes. This technique was initially applied in off-pump coronary artery bypass graft. Si ...
Long-term prognosis after a normal exercise stress Tc
... been studied. The aim of this study was to evaluate the incidence and predictors of mortality and cardiac events at long-term follow-up after a normal exercise stress sestamibi study. Methods and Results. We studied 218 patients (mean age, 53 ⴞ 10 years, 108 men) who had normal myocardial perfusion ...
... been studied. The aim of this study was to evaluate the incidence and predictors of mortality and cardiac events at long-term follow-up after a normal exercise stress sestamibi study. Methods and Results. We studied 218 patients (mean age, 53 ⴞ 10 years, 108 men) who had normal myocardial perfusion ...
Grampians Acute Cardiac Care Framework Oct_2014
... (NSTEMI) and unstable angina pectoris. The term non ST elevation myocardial infarction – acute coronary syndrome or non STEACS (NSTEACS) has also been introduced to cover both NSTEMI and unstable angina pectoris because the differential diagnosis is dependent on biomarkers that may not be available ...
... (NSTEMI) and unstable angina pectoris. The term non ST elevation myocardial infarction – acute coronary syndrome or non STEACS (NSTEACS) has also been introduced to cover both NSTEMI and unstable angina pectoris because the differential diagnosis is dependent on biomarkers that may not be available ...
Electrocardiography
Electrocardiography (ECG or EKG*) is the process of recording the electrical activity of the heart over a period of time using electrodes placed on a patient's body. These electrodes detect the tiny electrical changes on the skin that arise from the heart muscle depolarizing during each heartbeat.In a conventional 12 lead ECG, ten electrodes are placed on the patient's limbs and on the surface of the chest. The overall magnitude of the heart's electrical potential is then measured from twelve different angles (""leads"") and is recorded over a period of time (usually 10 seconds). In this way, the overall magnitude and direction of the heart's electrical depolarization is captured at each moment throughout the cardiac cycle. The graph of voltage versus time produced by this noninvasive medical procedure is referred to as an electrocardiogram (abbreviated ECG or EKG).During each heartbeat, a healthy heart will have an orderly progression of depolarization that starts with pacemaker cells in the sinoatrial node, spreads out through the atrium, passes through the atrioventricular node down into the bundle of His and into the Purkinje fibers spreading down and to the left throughout the ventricles. This orderly pattern of depolarization gives rise to the characteristic ECG tracing. To the trained clinician, an ECG conveys a large amount of information about the structure of the heart and the function of its electrical conduction system. Among other things, an ECG can be used to measure the rate and rhythm of heartbeats, the size and position of the heart chambers, the presence of any damage to the heart's muscle cells or conduction system, the effects of cardiac drugs, and the function of implanted pacemakers.