Essays on Brugada

Monomorphic Ventricular Tachycardia

Cardiac arrhythmias often require immediate medical care that may include resuscitation (Ray, 2004). The diagnosis of cardiac arrhythmias can be challenging particularly in situations whereby the patient is asymptomatic and ECG findings are normal between symptomatic episodes (Cruickshank, 2008). Distinguishing between supraventricular and ventricular tachycardia is also a challenge (Australian Resuscitation Council, 2008). Cardiac arrhythmia should be suspected in patients with a history of syncope, near syncope, palpitations, and/or chest pain (Cruickshank, 2008). This paper will justify why monomophic ventricular tachycardia is the most likely diagnosis of a male patient who collapsed abruptly and has hypotension (BP 63/38), tachycardia ( ...

DISCUSS THE ROLE OF ION CURRENTS IN DETERMINING THE SHAPE AND DURATION OF CARDIAC ACTION POTENTIAL

Introduction Selective permeability to various ions is an important characteristic of cell membranes, one that determines myriad cellular functions. In animal cells, ion permeability and the electrical potential generated thereof determines the activity of neurons, myocytes and the like. The electrical potential depends on the concentration of the ions inside and outside any given cell, the permeability of the cell membrane to the ions and the ion channels that are present on the surface of the cell. Cardiac cells also possess different ion channels on their surface. These determine the two types of electrical potentials, namely, resting membrane ...