A Prospective, Randomized Trial of an Emergency
... Emergency Department Observation Unit for Atrial Fibrillation Table 3. Follow-up data at 6 months, with intergroup ...
... Emergency Department Observation Unit for Atrial Fibrillation Table 3. Follow-up data at 6 months, with intergroup ...
Adult Cardiopulmonary Exercise Testing
... Skin preparation involves the removal of body hair from electrode sites with a new disposable razor. This is followed by cleaning the electrode areas with alcohol to remove skin oils and dirt. Scratching the next layer of skin will further reduce artefact. A resting ECG should be taken with the pati ...
... Skin preparation involves the removal of body hair from electrode sites with a new disposable razor. This is followed by cleaning the electrode areas with alcohol to remove skin oils and dirt. Scratching the next layer of skin will further reduce artefact. A resting ECG should be taken with the pati ...
Cardiac magnetic resonance imaging for the diagnosis of
... Abstract. Endomyocardial fibrosis (EMF) is a common cause of restrictive cardiomyopathy in the tropics and has been underdiagnosed in the past. Sometimes it is difficult to differentiate EMF from other restrictive cardiomyopathies. Currently, echocardiography is used for the initial investigations t ...
... Abstract. Endomyocardial fibrosis (EMF) is a common cause of restrictive cardiomyopathy in the tropics and has been underdiagnosed in the past. Sometimes it is difficult to differentiate EMF from other restrictive cardiomyopathies. Currently, echocardiography is used for the initial investigations t ...
Basic science behind the cardiovascular benefits of exercise
... hypertrophic cardiomyopathy, dilated cardiomyopathy and arrhythmogenic RV cardiomyopathy. From four large echocardiographic studies examining 5053 elite, predominately male athletes,10–13 134 (2.7%) demonstrated a maximal wall thickness ≥12 mm, of which 27 athletes (0.5%) presented ≥13 mm. In absolu ...
... hypertrophic cardiomyopathy, dilated cardiomyopathy and arrhythmogenic RV cardiomyopathy. From four large echocardiographic studies examining 5053 elite, predominately male athletes,10–13 134 (2.7%) demonstrated a maximal wall thickness ≥12 mm, of which 27 athletes (0.5%) presented ≥13 mm. In absolu ...
Echocardiographic Demonstration of Coronary Artery to Left
... fairly accurate technique. Our patient’s color Doppler investigation showed multiple turbulent jet areas originating from the left anterior descending artery and draining into the left ventricle. The size and function of the left and right ventricle were normal and there was no valvular disease. Tho ...
... fairly accurate technique. Our patient’s color Doppler investigation showed multiple turbulent jet areas originating from the left anterior descending artery and draining into the left ventricle. The size and function of the left and right ventricle were normal and there was no valvular disease. Tho ...
Principles of Multi-slice Cardiac CT Imaging
... to the heart muscles and show strong movement during the cardiac cycle. Due to the very complex 3D motion pattern of the heart, the intensity of movement varies for different cardiac anatomies and different coronary vessels, and within the cardiac cycle. The strongest movement is present during cont ...
... to the heart muscles and show strong movement during the cardiac cycle. Due to the very complex 3D motion pattern of the heart, the intensity of movement varies for different cardiac anatomies and different coronary vessels, and within the cardiac cycle. The strongest movement is present during cont ...
Impaired left ventricular relaxation in hypertrophic
... right ventricle, or both, in hypertrophic cardiomyopathy has been recognized for almost 30 years . Although the obstruction to left ventricular outflow was the focus of attention in hypertrophic cardiomyopathy in the 1960s, it was recognized that some patients could be more disabled from abnormal di ...
... right ventricle, or both, in hypertrophic cardiomyopathy has been recognized for almost 30 years . Although the obstruction to left ventricular outflow was the focus of attention in hypertrophic cardiomyopathy in the 1960s, it was recognized that some patients could be more disabled from abnormal di ...
cpr + aed programme - Singapore General Hospital
... • What happened (e.g. that someone is having a heart attack / is unconscious). • Number of victims. • Hang up only after instructed to do so by the dispatcher. In addition, there is an increasing number of AEDs (automated external defibrillators) that are currently being deployed in public areas. ...
... • What happened (e.g. that someone is having a heart attack / is unconscious). • Number of victims. • Hang up only after instructed to do so by the dispatcher. In addition, there is an increasing number of AEDs (automated external defibrillators) that are currently being deployed in public areas. ...
Echo-Doppler assessment of diastole: flow, function and
... echocardiographic indices of diastolic function. However, while Doppler velocities and time intervals reflect filling pressures at the time of the examination, LA volume often reflects the cumulative effects of filling pressures over time. An LA volume of ≥34 ml/m2 is an independent predictor of cardiov ...
... echocardiographic indices of diastolic function. However, while Doppler velocities and time intervals reflect filling pressures at the time of the examination, LA volume often reflects the cumulative effects of filling pressures over time. An LA volume of ≥34 ml/m2 is an independent predictor of cardiov ...
Cardiac Auscultation
... • Opening Snap of Mitral Stenosis (MS) • High Frequency-Left Lateral Decubitus Position, Apex • Occurs after S2, before S3 • MS More Severe with Short A2-OS Interval ...
... • Opening Snap of Mitral Stenosis (MS) • High Frequency-Left Lateral Decubitus Position, Apex • Occurs after S2, before S3 • MS More Severe with Short A2-OS Interval ...
The Relationship Between the Time Interval Difference of Isovolumic
... et al2 and Dokainish et al21 suggested that an intermediate E/Ea (between 8 and 15) is a grey zone for the prediction of LV filling pressures. In patients with regional wall motion abnormalities, the difference between the velocities of different mitral annular sites is generally exaggerated.1,2,22 ...
... et al2 and Dokainish et al21 suggested that an intermediate E/Ea (between 8 and 15) is a grey zone for the prediction of LV filling pressures. In patients with regional wall motion abnormalities, the difference between the velocities of different mitral annular sites is generally exaggerated.1,2,22 ...
Survival After Rate-Responsive Programming in Patients With
... Background—Rate-responsive pacing (DDDR) versus nonrate-responsive pacing (DDD) has shown no survival benefit for patients undergoing cardiac resynchronization therapy defibrillator (CRT-D) implants. The heart rate score (HRSc), an indicator of heart rate variation, may predict survival. We hypothes ...
... Background—Rate-responsive pacing (DDDR) versus nonrate-responsive pacing (DDD) has shown no survival benefit for patients undergoing cardiac resynchronization therapy defibrillator (CRT-D) implants. The heart rate score (HRSc), an indicator of heart rate variation, may predict survival. We hypothes ...
LETHAL CARDIAC ANAPHYLAXIS IN THE RABBIT.* The
... anaphylaxis in the rabbit we owe to Arthus. H e described objectively the most important symptoms of acute anaphylactic death, as well as the more ordinary type which ends in recovery. A m o n g the symptoms which characterize nonfatal anaphylaxis in the rabbit, he described the respiratory disturba ...
... anaphylaxis in the rabbit we owe to Arthus. H e described objectively the most important symptoms of acute anaphylactic death, as well as the more ordinary type which ends in recovery. A m o n g the symptoms which characterize nonfatal anaphylaxis in the rabbit, he described the respiratory disturba ...
Case Report Study on the distribution characteristics of affected
... one case of type-I second-degree atrioventricular block, and two cases of type-A pre-excitation syndrome. In the electrocardiograms of 20 cases, left ventricular hypertrophy and left deviation of the electrical axis were found; and heart X-ray examination exhibited an increased cardiac shadow. Elect ...
... one case of type-I second-degree atrioventricular block, and two cases of type-A pre-excitation syndrome. In the electrocardiograms of 20 cases, left ventricular hypertrophy and left deviation of the electrical axis were found; and heart X-ray examination exhibited an increased cardiac shadow. Elect ...
Unoperate shunt lesions in adults: when is closure indicated?
... - TEE for precise evaluation of secundum defects prior to device closure (size, residual septum´s morphology, rim size and quality, exclusion of additional defects and confirmation of normal pulmonary venous connection) and of sinus venosus defects - Other key info to be provided includes PAP and TR ...
... - TEE for precise evaluation of secundum defects prior to device closure (size, residual septum´s morphology, rim size and quality, exclusion of additional defects and confirmation of normal pulmonary venous connection) and of sinus venosus defects - Other key info to be provided includes PAP and TR ...
Hemodynamic Waveforms
... cannot stretch easily) can generate high pressures during filling, even when the actual volume in the ventricle is low. Ischemia can produce this type of problem, because oxygen is needed to facilitate muscle relaxation (referred to as diastolic dysfunction). o In addition, pathology that elevates p ...
... cannot stretch easily) can generate high pressures during filling, even when the actual volume in the ventricle is low. Ischemia can produce this type of problem, because oxygen is needed to facilitate muscle relaxation (referred to as diastolic dysfunction). o In addition, pathology that elevates p ...
Left Ventricular Assist Device as Permanent Support in Patients with
... individual patient probably vary between subjects, but may be affected in both positive and negative ways. The patient will still be dependent on assistance from family members and/or health care providers, and the physical integrity is affected. Without additional economic resources there is a subs ...
... individual patient probably vary between subjects, but may be affected in both positive and negative ways. The patient will still be dependent on assistance from family members and/or health care providers, and the physical integrity is affected. Without additional economic resources there is a subs ...
Factors of Risk in the Development of Coronary Heart Disease—Six
... hundredths of a second duration or greater), followed by serial changes of evolution if available. An old or remote myocardial infarction was considered to be present when there was a pathological Q wave of four hundredths of a second duration or greater, or loss of initial QRS potential (R-wave) in ...
... hundredths of a second duration or greater), followed by serial changes of evolution if available. An old or remote myocardial infarction was considered to be present when there was a pathological Q wave of four hundredths of a second duration or greater, or loss of initial QRS potential (R-wave) in ...
Prevalence and Clinical Predictors of Right Ventricular Dysfunction
... years, men 36.1%) who underwent permanent pacemaker implantation without RV dysfunction in baseline examination. Baseline clinical characteristics, laboratory data, echocardiographic parameters and pacing profiles were assessed. Follow up 2-dimentional echocardiography was used to identify the prese ...
... years, men 36.1%) who underwent permanent pacemaker implantation without RV dysfunction in baseline examination. Baseline clinical characteristics, laboratory data, echocardiographic parameters and pacing profiles were assessed. Follow up 2-dimentional echocardiography was used to identify the prese ...
Right Coronary Artery to Coronary Sinus Fistula: Computed
... volume was 210 ml and ejection fraction was 51%. ...
... volume was 210 ml and ejection fraction was 51%. ...
Cardiac Defects: Pulmonary Stenosis
... a heart murmur (an extra heart sound when a healthcare provider listens with a stethoscope) and, rarely, chest pain or fainting. ...
... a heart murmur (an extra heart sound when a healthcare provider listens with a stethoscope) and, rarely, chest pain or fainting. ...
The evolutionary origin of cardiac chambers - IB-USP
... Difficulties in ascribing chamber identity to cardiac compartments arise because during vertebrate evolution, cardiac segments may have regressed, merged into others, or divided into left, right or more compartments. Besides, chambers can be defined on either morphological (Bourne, 1980; Fange, 1972 ...
... Difficulties in ascribing chamber identity to cardiac compartments arise because during vertebrate evolution, cardiac segments may have regressed, merged into others, or divided into left, right or more compartments. Besides, chambers can be defined on either morphological (Bourne, 1980; Fange, 1972 ...
Cardiovascular Manifestations of Tuberous Sclerosis Complex and
... appreciation for disease variability and an assortment of mild disease phenotypes that may be on the TSC spectrum, the inclusion of a molecular test represents an important change in the approach to diagnosis. While approximately one-third of cases have a positive family history, this has not been i ...
... appreciation for disease variability and an assortment of mild disease phenotypes that may be on the TSC spectrum, the inclusion of a molecular test represents an important change in the approach to diagnosis. While approximately one-third of cases have a positive family history, this has not been i ...
The Mechanics of Left Ventricular Contraction in Acute
... element or fiber shortening velocity and total tension at the internal ventricular equator; contractile element work (CEW) (11) per beat was determined by integrating the power curves. Resting tension has not been subtracted, except in Figure 5, where active tension (developed tension minus resting ...
... element or fiber shortening velocity and total tension at the internal ventricular equator; contractile element work (CEW) (11) per beat was determined by integrating the power curves. Resting tension has not been subtracted, except in Figure 5, where active tension (developed tension minus resting ...
Ca2+ Homeostasis in Normal and Diseased Heart Editorial
... serves as a second messenger in signaling pathways, the tuning of Ca2+ release is precisely regulated by varieties of proteins, kinases, and ions. In fact, any mutation in LTCC, RyR, or other Ca2+ related protein may lead to ventricular arrhythmia, impaired contractility, or cardiomyopathy. Catechol ...
... serves as a second messenger in signaling pathways, the tuning of Ca2+ release is precisely regulated by varieties of proteins, kinases, and ions. In fact, any mutation in LTCC, RyR, or other Ca2+ related protein may lead to ventricular arrhythmia, impaired contractility, or cardiomyopathy. Catechol ...
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.