Basic Cardiac Rhythms Identification and Response

Basic Cardiac Rhythms . Identification and Response Module 1. ANATOMY, PHYSIOLOGY, &. ELECTRICAL CONDUCTION. Objectives Describe the normal Cardiac anatomy and physiology and normal electrical conduction through the heart. Identify and relate waveforms to the Cardiac cycle. Cardiac Anatomy 2 upper chambers Right and left atria 2 lower chambers Right and left ventricle 2 Atrioventricular valves (Mitral &. Tricuspid). Open with ventricular diastole Close with ventricular systole 2 Semilunar Valves (Aortic & Pulmonic). Open with ventricular systole Open with ventricular diastole The Cardiovascular System Pulmonary Circulation Unoxygenated right side of the heart Systemic Circulation Oxygenated left side of the heart Anatomy Coronary Arteries How The Heart Works Anatomy Coronary Arteries 2 major vessels of the coronary circulation Left main coronary artery Left anterior descending and circumflex branches Right main coronary artery The left and right coronary arteries originate at the base of the aorta from openings called the coronary ostia behind the aortic valve leaflets.

Step 1 – Heart Rate Methods to determine heart rate The 6 second method Denotes a 6 second interval on EKG strip Strip is marked by 3 or 6 second tick marks on the top or bottom of the graph paper Count the number of QRS complexes occurring within the 6 second interval, and then multiply that number by 10

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