Cardiovascular effects and cardiopulmonary
... valve in the His bundle position for recording of the low right atrial activity and His bundle potential. Right atrial pacing was performed with a current that was 2–4 times the diastolic threshold. The following electrophysiological variables were assessed, with estimated detection levels of interv ...
... valve in the His bundle position for recording of the low right atrial activity and His bundle potential. Right atrial pacing was performed with a current that was 2–4 times the diastolic threshold. The following electrophysiological variables were assessed, with estimated detection levels of interv ...
DOI: 10.1161/CIRCULATIONAHA.108.811877 published online Mar
... acquisition parameters were as follows: free breathing using navigator gating, a transverse imaging volume with true voxel size of 1.25⫻1.25⫻2.5 mm, flip angle of 22°, repetition time/echo time of 6.1/2.4 ms, inversion time of 230 to 320 ms, and parallel imaging with GRAPPA technique with R⫽2 and 42 ...
... acquisition parameters were as follows: free breathing using navigator gating, a transverse imaging volume with true voxel size of 1.25⫻1.25⫻2.5 mm, flip angle of 22°, repetition time/echo time of 6.1/2.4 ms, inversion time of 230 to 320 ms, and parallel imaging with GRAPPA technique with R⫽2 and 42 ...
Cardiac Pacing
... a pacemaker or artificial pacemaker so as not to be confused with the heart s natural pacemaker is a medical device which uses, temporary cardiac pacing uptodate - temporary cardiac pacing involves electrical cardiac stimulation to treat a bradyarrhythmia or tachyarrhythmia until it resolves or unti ...
... a pacemaker or artificial pacemaker so as not to be confused with the heart s natural pacemaker is a medical device which uses, temporary cardiac pacing uptodate - temporary cardiac pacing involves electrical cardiac stimulation to treat a bradyarrhythmia or tachyarrhythmia until it resolves or unti ...
Quantitation of Collagen in Human Myocardium
... between right and left ventricle collagen concentrations in their study of a series of 34 normal human hearts. Using the gravimetric technic for collagen determination, they showed that the atria of adults were richer in collagen than were the ventricles, while in infants and children up to 10 years ...
... between right and left ventricle collagen concentrations in their study of a series of 34 normal human hearts. Using the gravimetric technic for collagen determination, they showed that the atria of adults were richer in collagen than were the ventricles, while in infants and children up to 10 years ...
Cardiac norepinephrine transporter protein expression is inversely
... Capillary electrophoresis with electrochemical detection (CE-EC) using a boron-doped diamond electrode was employed for NE determination in the heart chambers. The CE-EC system, electrochemical detection cell, and electrode fabrication are described elsewhere (11, 38). The protocol is similar to tha ...
... Capillary electrophoresis with electrochemical detection (CE-EC) using a boron-doped diamond electrode was employed for NE determination in the heart chambers. The CE-EC system, electrochemical detection cell, and electrode fabrication are described elsewhere (11, 38). The protocol is similar to tha ...
Emotion: An Evolutionary By-Product of the Neural
... catecholamines released from chromaffin tissue. Thus, since activation of metabolic output is driven by circulating catecholamines and not by direct neural innervation, once the excitatory system is triggered, the ability to self-sooth or calm is limited. In vertebrates with sympathetic and vagal ne ...
... catecholamines released from chromaffin tissue. Thus, since activation of metabolic output is driven by circulating catecholamines and not by direct neural innervation, once the excitatory system is triggered, the ability to self-sooth or calm is limited. In vertebrates with sympathetic and vagal ne ...
DOI: 10.1161/CIRCULATIONAHA.108.811877 published online Mar
... acquisition parameters were as follows: free breathing using navigator gating, a transverse imaging volume with true voxel size of 1.25&1.25&2.5 mm, flip angle of 22°, repetition time/echo time of 6.1/2.4 ms, inversion time of 230 to 320 ms, and parallel imaging with GRAPPA technique with R$2 and 42 ...
... acquisition parameters were as follows: free breathing using navigator gating, a transverse imaging volume with true voxel size of 1.25&1.25&2.5 mm, flip angle of 22°, repetition time/echo time of 6.1/2.4 ms, inversion time of 230 to 320 ms, and parallel imaging with GRAPPA technique with R$2 and 42 ...
Responses of cardiac natriuretic peptides after paroxysmal
... Twelve-lead electrocardiogram of all the patients showed no myocardial ischemia. No ...
... Twelve-lead electrocardiogram of all the patients showed no myocardial ischemia. No ...
Cardiac Remodeling in Response to 1 Year of Intensive - MET-TEST
... Conclusions—One year of prolonged and intensive endurance training leads to cardiac morphologic adaptations in previously sedentary young subjects similar to those observed in elite endurance athletes; however it is not sufficient to achieve similar levels of cardiac compliance and performance. Cont ...
... Conclusions—One year of prolonged and intensive endurance training leads to cardiac morphologic adaptations in previously sedentary young subjects similar to those observed in elite endurance athletes; however it is not sufficient to achieve similar levels of cardiac compliance and performance. Cont ...
Serum Cortisol as a Useful Predictor of Cardiac Events in Patients
... adenine dinucleotide phosphate oxidase is activated and generation of reactive oxygen species is increased in cardiomyocytes,27 and then, cortisol may act as an MR agonist under those conditions. In this study, high serum cortisol was an independent predictor of cardiac events. However, there was no ...
... adenine dinucleotide phosphate oxidase is activated and generation of reactive oxygen species is increased in cardiomyocytes,27 and then, cortisol may act as an MR agonist under those conditions. In this study, high serum cortisol was an independent predictor of cardiac events. However, there was no ...
ACLS Pharmacology Review
... – Initial dose: 1.0 to 1.5 mg/kg IV – For refractory VF may repeat 1.0 to 1.5 mg/kg IV in 3 to 5 minutes; maximum total dose, 3 mg/kg – A single dose of 1.5 mg/kg IV in cardiac ...
... – Initial dose: 1.0 to 1.5 mg/kg IV – For refractory VF may repeat 1.0 to 1.5 mg/kg IV in 3 to 5 minutes; maximum total dose, 3 mg/kg – A single dose of 1.5 mg/kg IV in cardiac ...
Atrial Fibrillation : Present Treatment Protocols by Drugs and Interventions Abstract
... patients in the rhythm control arm required hospitalisation during follow-up significantly more often than patients in the rate control arm. In addition, after an adjustment for variables such as age and ejection fraction in a multivariate Cox model, rate control had a significantly lower risk of de ...
... patients in the rhythm control arm required hospitalisation during follow-up significantly more often than patients in the rate control arm. In addition, after an adjustment for variables such as age and ejection fraction in a multivariate Cox model, rate control had a significantly lower risk of de ...
Acute Myocardial Infarction - J
... was an important predictor of 6-month mortality independent of ECG findings or creatine kinase.12 A recent cohort study also demonstrated that the long-term mortality of patients with AMI was significantly improved when guided by the cardiac troponin test.13 AMI patients with higher troponin levels ...
... was an important predictor of 6-month mortality independent of ECG findings or creatine kinase.12 A recent cohort study also demonstrated that the long-term mortality of patients with AMI was significantly improved when guided by the cardiac troponin test.13 AMI patients with higher troponin levels ...
ACLS Pharmacology Review
... – Initial dose: 1.0 to 1.5 mg/kg IV – For refractory VF may repeat 1.0 to 1.5 mg/kg IV in 3 to 5 minutes; maximum total dose, 3 mg/kg – A single dose of 1.5 mg/kg IV in cardiac ...
... – Initial dose: 1.0 to 1.5 mg/kg IV – For refractory VF may repeat 1.0 to 1.5 mg/kg IV in 3 to 5 minutes; maximum total dose, 3 mg/kg – A single dose of 1.5 mg/kg IV in cardiac ...
Implantable Cardioverter
... A single chamber ICD will have one lead in the ventricle. A dual chamber ICD will have two leads in both the atrium and ventricle. In order to test the ICD, doctors will induce arrhythmia. During this time, ...
... A single chamber ICD will have one lead in the ventricle. A dual chamber ICD will have two leads in both the atrium and ventricle. In order to test the ICD, doctors will induce arrhythmia. During this time, ...
The Prognostic Role of QTc Interval in Acute Myocarditis
... and by ischemia that results in increased intracellular calcium levels during the cardiac action potential, inhibiting the repolarizing potassium current.20 QT interval prolongation has also been proposed as a risk factor for ventricular arrhythmia and death; moreover, it is a powerful predictor of ...
... and by ischemia that results in increased intracellular calcium levels during the cardiac action potential, inhibiting the repolarizing potassium current.20 QT interval prolongation has also been proposed as a risk factor for ventricular arrhythmia and death; moreover, it is a powerful predictor of ...
syncope evaluation and management
... • Indicated in patients at highest risk for arrhythmia ie, abnormal ekg, palpitations, cad history, syncope when supine or with exertion, +FH ...
... • Indicated in patients at highest risk for arrhythmia ie, abnormal ekg, palpitations, cad history, syncope when supine or with exertion, +FH ...
PREVALENCE OF LEFT VENTRICULAR HYPERTROPHY AND ITS
... Numerous common genetic variants with small effects on blood pressure have been identified as well as some rare genetic variants with large effects on blood pressure but the genetic basis of hypertension is still poorly understood.16 Essential hypertension is the form of hypertension that by definit ...
... Numerous common genetic variants with small effects on blood pressure have been identified as well as some rare genetic variants with large effects on blood pressure but the genetic basis of hypertension is still poorly understood.16 Essential hypertension is the form of hypertension that by definit ...
CONSTRICTIVE PERICARDITIS
... affects all chambers of the heart. Localized constriction, which may produce external stenosis of the mitral and tricuspid valves, is rare (1) . In the chronic stage, pericardial calcification may develop, but it may be absent in earlier stages despite severe hemodynamic compromise. Tuberculosis was ...
... affects all chambers of the heart. Localized constriction, which may produce external stenosis of the mitral and tricuspid valves, is rare (1) . In the chronic stage, pericardial calcification may develop, but it may be absent in earlier stages despite severe hemodynamic compromise. Tuberculosis was ...
It Takes “Heart” to Win: What Makes the Heart Powerful?
... ventricular pressures are still greater than atrial pressures, the AV valves are also closed, so pressure falls with no change in ventricular volume during phase 4. Stroke volume is the difference between the volume after filling (i.e., end-diastolic volume) and the volume after ejection (i.e., end- ...
... ventricular pressures are still greater than atrial pressures, the AV valves are also closed, so pressure falls with no change in ventricular volume during phase 4. Stroke volume is the difference between the volume after filling (i.e., end-diastolic volume) and the volume after ejection (i.e., end- ...
Left Atrial Ejection Force (LAEF)
... 38 pts, beta-blocker in 5 pts, ACE inhibitor in 19 pts, alphablocker in 3 pts, combination of these drugs in 26 pts, and none in 37 pts. All patients had normal left ventricular systolic function. Study II (Follow-up Study) Forty patients with hypertension who were admitted to our hospital from Janu ...
... 38 pts, beta-blocker in 5 pts, ACE inhibitor in 19 pts, alphablocker in 3 pts, combination of these drugs in 26 pts, and none in 37 pts. All patients had normal left ventricular systolic function. Study II (Follow-up Study) Forty patients with hypertension who were admitted to our hospital from Janu ...
Universitat Autònoma de Barcelona
... at low level of detail, but falls short to give abstract global interpretations. In this thesis, we present a set of novel multi-resolution techniques applied as a methodology able to produce simpli ed representations of cardiac architecture in combination with improved streamlining techniques tailo ...
... at low level of detail, but falls short to give abstract global interpretations. In this thesis, we present a set of novel multi-resolution techniques applied as a methodology able to produce simpli ed representations of cardiac architecture in combination with improved streamlining techniques tailo ...
Neurodevelopmental Outcomes in Infants with Hypoplastic Left
... improving the lives of children and adults with congenital heart disease. Dr. Mark Galantowicz and Dr. John P. Cheatham have been instrumental in paving the way and perfecting the Hybrid approach to treating hypoplastic left heart syndrome. Without their support, this study would not have been poss ...
... improving the lives of children and adults with congenital heart disease. Dr. Mark Galantowicz and Dr. John P. Cheatham have been instrumental in paving the way and perfecting the Hybrid approach to treating hypoplastic left heart syndrome. Without their support, this study would not have been poss ...
Automatic Optimum Phase Selection In Cardiac CT Imaging Master
... • Papillary muscles: They attach to the lower portion of the interior wall of the ventricles. They connect to the chordae tendineae, which attach to the tricuspid valve in the right ventricle and the mitral valve in the left ventricle. The contraction of the papillary muscles opens these valves. Whe ...
... • Papillary muscles: They attach to the lower portion of the interior wall of the ventricles. They connect to the chordae tendineae, which attach to the tricuspid valve in the right ventricle and the mitral valve in the left ventricle. The contraction of the papillary muscles opens these valves. Whe ...
CARDIOVASCULAR DISEASE EVENT CLASSIFICATION IN THE
... higher CVD death rates than Whites, and men have higher death rates than women. Although the CVD death rate is declining in Whites, it has remained at the same level in African Americans since the early 1980s, thus creating a growing disparity in CVD mortality rates between Whites and African Americ ...
... higher CVD death rates than Whites, and men have higher death rates than women. Although the CVD death rate is declining in Whites, it has remained at the same level in African Americans since the early 1980s, thus creating a growing disparity in CVD mortality rates between Whites and African Americ ...
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.