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Monday, July 20, 2020 | History

2 edition of Studies on ventricular fibrillation - found in the catalog.

Studies on ventricular fibrillation -

Euan James Frazier Carlisle

Studies on ventricular fibrillation -

spectral analysis and optimisation of defibrillation.

by Euan James Frazier Carlisle

  • 276 Want to read
  • 10 Currently reading

Published .
Written in English


Edition Notes

Thesis (M.D.)--The Queen"s University of Belfast, 1987.

The Physical Object
Pagination1 v
ID Numbers
Open LibraryOL19800190M

If ventricular fibrillation is caused by a reversible disorder, that disorder is treated. Otherwise, most people have an implantable cardioverter-defibrillator (ICD) surgically implanted to correct the problem if it recurs. ICDs continually monitor the rate and rhythm of the heart, automatically detect ventricular fibrillation, and deliver a. Two annotated databases, MIT-BIH (VF) and CU, which have been widely used in VF studies [10,11,12,13,15,16], are used in this study. The types of rhythms included in these databases are normal sinus rhythm, ventricular tachycardia, and ventricular fibrillation.

  Buy Ventricular Fibrillation and Sudden Coronary Death (Developments in Cardiovascular Medicine Book ): Read Books Reviews - Ventricular fibrillation (VF) signals are characterized by highly volatile and erratic electrical impulses, the analysis of which is difficult given the complex behavior of the heart rhythms in the left (LV) and right ventricles (RV), as sometimes shown in intracardiac recorded Electrograms (EGM). However, there are few studies that analyze VF in humans according to the .

These studies naturally lead to a consideration of interventions, based on her research, to prevent ventricular fibrillation after coronary artery occlusion. This is a wide ranging treatise indicative of a lifetime of study of the problem and filled with the richness of scientific experiments generated in its pursuit. Atrial fibrillation (AF or A-fib) is an abnormal heart rhythm (arrhythmia) characterized by the rapid and irregular beating of the atrial chambers of the heart. It often begins as short periods of abnormal beating, which become longer or continuous over time. It may also start as other forms of arrhythmia such as atrial flutter that then transform into AF.


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Studies on ventricular fibrillation - by Euan James Frazier Carlisle Download PDF EPUB FB2

Ventricular flutter appears on the ECG as a sine Studies on ventricular fibrillation - book pattern that is characterized by regular, large oscillations (see Fig.

).The rhythm may be difficult to distinguish from rapid VT and can progress to ventricular fibrillation. Ventricular fibrillation is a terminal arrhythmia in which ventricular contractions are uncoordinated and too weak to eject blood. Ventricular fibrillation (VF) is a life-threatening cardiac arrhythmia in which the coordinated contraction of the ventricular myocardium is replaced by high-frequency, disorganized excitation, resulting in failure of the heart to pump blood.

VF is the most commonly identified arrhythmia in cardiac arrest patients. Ventricular tachycardia ablation. Ventricular tachycardia ablation is a procedure to eliminate the areas of the heart where erratic electrical signals arise that can cause your heart to beat ineffectively.

Ventricular tachycardia occurs when electrical signals within the lower chambers of your heart (ventricles) cause your heart to beat too. Arrhythmias originating from the ventricular myocardium or His-Purkinje system are grouped under ventricular arrhythmia (VA).

This includes a subset of arrhythmias such as ventricular tachycardia (VT), ventricular fibrillation (VF), premature ventricular contractions (PVC), and ventricular flutter. Wide complex tachycardia (WCT) is used to define all tachyarrhythmia with. Ventricular Fibrillation; Pulseless Ventricular Tachycardia (V.

fib or V. Tach) Repeat Defibrillation as above after each cycle. Call clear; Compressions need not be interrupted if mechanical CPR device is in place; Administer medications once IV or IO Access obtained (see below) Administer during Cardiac Compressions (between Defibrillations.

During ventricular fibrillation the patient is unconscious and will die if emergency intervention is not undertaken Drugs Used to Treat Ventricular Fibrillation The following list of medications are in some way related to, or used in the treatment of this condition.

Timely Recognition of Ventricular Fibrillation and Initiation of Cardiopulmonary Resuscitation by Intensive Care Unit Nurses: A High-Fidelity Prior studies have documented the validity of clinical simulation to assess clinical skills in health care professionals (Weller, Kurrek, Cohen, & Cleave-Hogg, ).

Ventricular Fibrillation and Sudden Coronary Death by Mina Rajskina,available at Book Depository with free delivery worldwide. The effects of tachycardia on ventricular function have largely been derived from studies examining patients with chronic atrial fibrillation and a rapid ventricular response.

Adequate rate control varies with age, but ventricular responses between 60 and 80 beats per minute at rest, and between 90 and beats per minute during moderate.

BACKGROUND: Ventricular fibrillation (VF) waveform characteristics are associated with cardiac arrest duration and defibrillation success.

Recent animal studies found that VF characteristics and shock success also depend on the presence of myocardial infarction (MI).

Ventricular fibrillation (VF) begins as a quasiperiodic reentrant pattern of excitation in the ventricles with resulting poorly synchronized and inadequate myocardial contractions. The heart consequently immediately loses its ability to function as a pump. Ventricular fibrillation (V-fib or VF) is an abnormal heart rhythm in which the ventricles of the heart quiver instead of pumping normally.

It is due to disorganized electrical activity. Ventricular fibrillation results in cardiac arrest with loss of consciousness and no pulse. This is followed by death in the absence of treatment. Ventricular fibrillation is initially found in about 10% of. Ventricular tachycardia (VT) can lead to ventricular fibrillation (VFib).

Ventricular tachycardia. This type of arrhythmia is a rapid, regular heartbeat (more than beats per minute) that can last for just a few seconds or much longer. VT prevents the ventricles from fully contracting, which means that less blood is pumped to the body. Koplan BA, Stevenson WG.

Ventricular tachycardia and sudden cardiac death. Mayo Clin Proc. Mar;84(3) full-text; Zipes DP, Camm AJ, Borggrefe M, et al. ACC/AHA/ESC guidelines for management of patients with ventricular arrhythmias and the prevention of sudden cardiac death: a report of the American College of Cardiology/American Heart Association.

Death resulting from cardiac arrest was recognized in the epic of Gilgamesh, perhaps the oldest written story on Earth (circa b.c.). “I touched his heart, but it beat no longer” lamented Gilgamesh, the Babylonian hero-king in the Mesopotamian Epic of Gilgamesh, as he witnessed the death of his best friend, Enkidu.1 Sudden death presumably caused by ventricular fibrillation.

from book Hypermobility and prevalence of atrial and ventricular arrhythmias and sudden deaths in epidemiological studies, surveys and randomised control trials of. ventricular fibrillation is an erratic, disorganized firing of impulses from the ventricles, so they're unable to contract or pump blood to the body.

this is a medical emergency that must be treated w. 1) Ventricular fibrillation (VF) causes uncoordinated quivering of the ventricle with no useful contractions 2) VF is the presenting rhythm for about 70% of patients in cardiac arrest & is thus the terminal event in many disorders 3) Ventricular fibrillation (VF) is the the most important shockable cardiac arrest rhythm.

Ventricular Fibrillation is characterized by rapid, usually more than bpm (cycle length: ms or less), grossly irregular ventricular rhythm with marked variability in QRS cycle length, morphology, and amplitude. Definition (CSP). Ventricular fibrillation (VF) is a condition in which your heart beats in an abnormal rhythm.

Your heart should beat in a regular, steady pattern. VF causes your heart to beat quickly and out of. Ventricular fibrillation (V-fib) is a dangerous type of arrhythmia, or irregular heartbeat.

It affects your heart’s ventricles. Your heart is a muscle system that contains 4 chambers. The 2 bottom chambers are the ventricles. In a healthy heart, your blood pumps evenly in. Ventricular Fibrillation (AKA Vfib or VF) is a life-threatening arrhythmia with disorganized chaotic electrical activity coming from the ventricles that cause the ventricles to quiver.

The main cause of this chaos is a lack of blood flow to the heart. Atrial fibrillation (AFib) and ventricular fibrillation (VFib) are both heart conditions that are referred to as arrhythmias. Common Symptoms of AFib are weakness, dizziness, anxiety, and shortness of breath. VFib is a medical emergency with short-lived symptoms of sudden collapse and death if not treated immediately.