Atrioventricular node

depolarization caused by electrical currents that induce muscle contraction. The electrical component of the heartbeat begins in the Sinoatrial (SA) Node and its function is to send electrical impulses that stimulate your heart to beat, and these impulses induce the atria to contract. As the atria contract, the impulse moves on to the Atrioventricular (AV) node which leads the ventricles to contract (A). A pacemaker becomes necessary when the heart suffers from arrhythmia, a condition of…

Ventricular Septal Defects (VSD) Ball & Bindler (2008) describes this condition as an opening in the ventricular septum, which causes an increase in pulmonary blood flow. VSD is a hole in the wall separating the two lower chambers of the heart (AHA, 2016). The blood is shunted from the left ventricle artery, across the open septum into the pulmonary artery without any impediment (Ball & Bindler, 2008). The opening may cause a higher pressure in the heart or reduced oxygen to the body (AHA, 2016)…

Presence of a histologic or clinical diagnosis of extra-cardiac sarcoidosis and a combination of major and minor cardiac criteria. (A minimum of three major criteria or at one major and three minor criteria). • Major criteria include advanced atrioventricular block, basal thinning of the interventricular septum, cardiac gallium uptake, and left ventricular ejection fraction 40 mg/day of prednisone) compared with those treated with a low dose (35 percent and/or lack of heart failure: • In…

Sarah Grace Burton and Emily Dickey May 23rd, 2017 Anatomy HN - Vogel 4th Period Atrial Fibrillation Inside of the cardiovascular system, the heart normally has a regular heartbeat that is consistent. But for some people, their heartbeat is quivering and irregular which is called arrhythmia as the atria gets off beat. This rapid, abnormal heart-related condition is called Atrial Fibrillation, or more commonly known as AFib or AF. It can be caused by a variety of things, including…

Question 1 Assess Mr Logan’s medication chart. Identify and explain three significant risks that may be associated with the use of the medicines (home or inpatient use) for Mr Logan. The total dose of parenteral digitalisation for the elderly is 25-500microgram. This may be given slowly by Intra Venous Route, single dose or divided doses each 125-250 microgram at intervals of 4-6 hours. The immediate STAT dose given at 1100 01/05 was the total dose, the prescribed post expected doses 4 hourly…

Diagnostic Tests For Atrial Fibrillation The initial foundation of the diagnosis of AF depends on the thorough physical examination and an ECG interpretation. In the Nottingham (2010) report, he cited the American College of Cardiology/American Heart Association (ACC/AHA), the Heart Failure Society of America (HFSA), and the European Society of Cardiology (ESC) diagnostic criteria for initial diagnosis of atrial fibrillation. This includes; a thorough history and physical…

Mr. ABC came in to the emergency department (ED) with a chief complaint of left sided chest pain with giddiness and associated with diaphoresis the same morning. While in the ED, he developed a sudden episode of shortness of breath. Mr. ABC has nil past medical or surgical history and has an allergy to Enalapril. His parameters taken are as follows: • Blood pressure: 112 /60 mmHg • Pulse rate: 42 beats/min • Temperature: 35.9°C • Spo2: 97% on room air • Respiration rate: 17 breaths/min An…

The ECG/EKG When most people think of heart tests, they think of the ECG. ECG stands for electrocardiogram. It's also called an EKG, from the German elektrokardiogram. Although it may look like an ECG is recording heartbeats, it's not. In fact, it records the electrical activity (the electrical triggers, if you will) that presage the actual heartbeat. The mechanical beats follow the electrical triggers by about a tenth of a second -- unless, of course, there's a problem. Or to state it in…