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Inappropriate Sinus Tachycardia After Radiofrequency Ablation of
Inappropriate Sinus Tachycardia After Radiofrequency Ablation of

... AP was defined as para-Hisian whenever its atrial and ventricular insertions were associated witb a His-bundle potential > 0.1 mV. RF current was always delivered at tbe atrial aspect of tbe tricuspid annulus. to a site where tbe His-bundle potential was < 0.15 niV. Time- and frequency-domain analys ...
IOSR Journal of Nursing and Health Science (IOSR-JNHS)
IOSR Journal of Nursing and Health Science (IOSR-JNHS)

... 61 and above and most (80%) of them were males. Majority(90%) of patients with congestive heart failure were nonvegetarian and 50% of them had the etiology of CAD for developing congestive heart failure. Majority (100%) of patients were hospitalized with similar complaints like dyspnoea, edema, ches ...
Skeletal System
Skeletal System

... ventricles begins at the apex of the heart and travels superiorly, so that the ventricular blood is ejected superiorly into the great arteries The brief delay of the contraction signaling impulses at the AV node enables the ventricles to fill completely before they start to contract ...
Double heart rupture after acute myocardial infarction: A
Double heart rupture after acute myocardial infarction: A

... stage prevented acute tamponade. Elevation of ST segment on ECG and the presence of thrombus and small effusion in the pericardium was probably a sign of rupture of the free wall of the left ventricle. In our case reperfusion therapy (fibrinolysis or PCI) was not applied, myocardial infarction was t ...
Fontan failure associated with a restrictive systemic
Fontan failure associated with a restrictive systemic

... of cardiac output. A study on diastolic function in patients with Fontan circulation demonstrated a similar reduction in ventricular compliance.5 The finding in our case that this reduced compliance was not associated with any myocardial fibrosis or hypertrophy suggests that it was not primarily the ...
A Rare Presentation with Angina and Pseudoinfarct ECG Pattern in
A Rare Presentation with Angina and Pseudoinfarct ECG Pattern in

... with Ebstein’s anomaly may present with cyanosis, congestive heart failure and marked cardiomegaly5. Symptomatic children with Ebstein’s anomaly may have progressive right sided heart failure, but adult survival is common although patients being asymptomatic for extremely long periods is extremely u ...
Cardiac Monitoring & ADHD - Scioto County Medical Society
Cardiac Monitoring & ADHD - Scioto County Medical Society

... • Tachycardia- increase in HR ~ 1-2 bpm • BP- increase in systolic and diastolic BP ~ 3-4 mmHg • No study has demonstrated a significant change in QT or QTc intervals (exception: imipramine, TCAs- rarely used in ADHD) • Because the risk of sudden death in the population of patients pharmacologically ...
Implantation of an Andrastent XL in an adult with advanced chronic
Implantation of an Andrastent XL in an adult with advanced chronic

... in such a critical condition was a percutaneous stent implantation into the CoA as a medical emergency. The patient was transferred to the cath lab intubated, artificially ventilated, and on a high-dose adrenaline infusion. The time between the first incident of cardiac arrest and the start of the p ...
Heart Failure - Fort Sanders Regional Medical Center
Heart Failure - Fort Sanders Regional Medical Center

... How is Heart Failure Diagnosed? • Echocardiogram (also known as an “echo”) In addition to a complete medical history and A noninvasive test that uses sound waves to physical examination, diagnostic procedures produce a study of the motion of the heart’s for heart failure may include a chest x-ray ...
1 1 2 3 4 5 Atrio-Ventricular Plane Displacement is the - AJP
1 1 2 3 4 5 Atrio-Ventricular Plane Displacement is the - AJP

... physiological process of the ventricular refill. For example, 5-7mm pressure difference ...
Answers — Chapter 13
Answers — Chapter 13

... e. All of these are granular leukocytes. ___ 13. Which statement about platelets is false? a. They have a life span of about 120 days. b. They are the smallest of the formed elements, derived originally from megakaryocytes. c. During blood clotting, they release a chemical called serotonin that cons ...
Preconception Counseling for Women with Congenital Heart Disease
Preconception Counseling for Women with Congenital Heart Disease

... Holter monitors. Cardiac catheterization is indicated when the information from non-invasive diagnostic tools is insufficient, such as pulmonary arterial hypertension or severity of obstructive lesions. The assessment and counseling should be performed by a well-trained adult CHD specialist. ...
Implantation of an Andrastent XL in an adult with advanced chronic
Implantation of an Andrastent XL in an adult with advanced chronic

... in such a critical condition was a percutaneous stent implantation into the CoA as a medical emergency. The patient was transferred to the cath lab intubated, artificially ventilated, and on a high-dose adrenaline infusion. The time between the first incident of cardiac arrest and the start of the p ...
Ventricular Electrical Heterogeneity in Experimental Diabetes
Ventricular Electrical Heterogeneity in Experimental Diabetes

... inhibition of this current was shown to be responsible for the transient action potential duration prolongation in ischemia (Verkerk et al. 1996). Accordingly, such an effect was not observed in the DM group. The effects of ATs and ARIs oppositely influenced the local RTs thus reducing their change. ...
Prognostic Significance of PVCs and resting heart rate, 2007
Prognostic Significance of PVCs and resting heart rate, 2007

... All initial ECGs of consecutive veterans (outpatient and inpatient) who obtained ECGs for any reason at the Palo Alto VA Medical Center from April 1987 until December 1999 were considered in the study. From these 46,959 ECGs, those with atrial fibrillation and paced rhythms were excluded, leaving 45 ...
Congestive Cardiac Failure
Congestive Cardiac Failure

... It is usually relived promptly once the patient sits upright ...
- Wiley Online Library
- Wiley Online Library

... risk factors for the development of TdP. Clinical use of the QT interval as a biomarker for risk of TdP is, however, hampered by practical difficulties in measurement in a clinical context. While many modern ECG machines provide automated measurements of QT interval upon which many clinicians rely [3 ...
Different effect of exercise on left ventricular diastolic time and
Different effect of exercise on left ventricular diastolic time and

... All NYHA class III patients undergoing invasive hemodynamic exercise testing for clinical reasons were consecutively screened as potential candidates. Inclusion criteria were: idiopathic dilated cardiomyopathy (IDCM) diagnosed on the basis of the exclusion of other causes of LV dysfunction, such as ...
Structure and Function Overview
Structure and Function Overview

... into the pulmonary circuit, and the left ventricle pumps blood into the systemic circuit. The pulmonary circuit passes through the lungs, which share the thoracic cavity with the heart. The systemic circuit traverses the rest of the body, and the blood must travel much farther. Because the left vent ...
Our Heart Rate: Measuring Our Heart Rate at Rest
Our Heart Rate: Measuring Our Heart Rate at Rest

... of his own heart. He did this by threading a catheter into his arm vein and pushing it 20 inches up into his heart. This procedure is now a very common surgical procedure called cardiac catheterization. ...
PATHOPHYSIOLOGY OF CARDIOVASCULAR SYSTEM
PATHOPHYSIOLOGY OF CARDIOVASCULAR SYSTEM

... overweight and many others. Total to date is called more than 50 risk factors, the essential role of which in the event of heart disease and blood vessels clearly established. These facts indicate that the fight against diseases of the cardiovascular system is one of the most important not only biom ...
correspondence course of the
correspondence course of the

... Blood supplies the cells of the body with oxygen. In an emergency, you must ensure that this supply of oxygen continues. The supply of oxygen to the body cells is threatened whenever the person stops breathing on his own, or when the person's heart stops pumping blood. When the oxygen supply fails, ...
Circulatory System
Circulatory System

... will recall that the cat and shark are latex-injected so that the arteries should be readily apparent. The sheep’s heart will be used to study the internal anatomy of the heart. As always, you will be responsible for knowing all structures which appear in bold for next week’s quiz. ...
Obstructive sleep apnea and heart failure-an often
Obstructive sleep apnea and heart failure-an often

... syndromes (CSAS), which are both highly prevalent in heart failure.[20] Cheyne Stokes breathing, which is seen in CSAS is due to damage within the respiratory centers of the brain and can be made worse by physiological abnormalities seen in chronic heart failure. Our patient likely started with obst ...
诊断学——循环系统检体
诊断学——循环系统检体

... Right(cm) ICS Left(cm) ...
< 1 ... 278 279 280 281 282 283 284 285 286 ... 762 >

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.
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