Nha Cet Review Practice Test.

NHA CET REVIEW PRACTICE TEST. What is the primary pacemaker? - CORRECT ANSWER SA Node What is a more medically correct term for the clotting of an artery? - CORRECT ANSWER Occlusion When the Atria depolarize (or contract), what is shown on the EKG tracing? - CORRECT ANSWER P wave An irregular heartbeat that is common among children is called _____ _____. - CORRECT ANSWER Sinus Arrhythmia 1 sm box on an EKG strip denotes 0.04 seconds of time. How long is this represented in millimeters? - CORRECT ANSWER 1 mm What is the term used to described the amount of blood pumped by the heart per minute? - CORRECT ANSWER Cardiac output Leads I to III are collectively known as - CORRECT ANSWER Standard leads Leads V1 to V6 are collectively known as - CORRECT ANSWER Precordial leads What is the main artery in the arterial system - CORRECT ANSWER Aorta aVr, aVl, and aVf are known as - CORRECT ANSWER Augmented leads Leg electrodes are only used for? - CORRECT ANSWER grounding What is the main vein in the venous system? - CORRECT ANSWER Superior vena cava The mitral valve is also known as - CORRECT ANSWER bicuspid valve When the ventricles depolarizes (contracts), what is shown on the EKG tracing - CORRECT ANSWER QRS complex The Angle of Louis provides the LOCATION for which intercostal space - CORRECT ANSWER 2nd When clotting reduces oxygen supply to a region of the heart it is known as _____. - CORRECT ANSWER Ischemia When the Atria repolarize (or are at rest), what is shown on the EKG tracing? - CORRECT ANSWER PR segment (T/F) You should stop a stress test because of a change of heart rhythm - CORRECT ANSWER False What is formed by the manubrium and the body of the sternum that helps in electrode placement - CORRECT ANSWER Angle of Louis V1 is placed in the 4th intercostal space and is located on which side of the sternum - CORRECT ANSWER Right side The distance between P wave to P wave can be used to calculate what kind of rate - CORRECT ANSWER Atrial rate Which lead should be placed just below the nipple, in the 5th intercostal space on the midclavicular line (MCL)? - CORRECT ANSWER V4 What arrhythmia is associated with the skipping of heartbeats on an EKG tracing? - CORRECT ANSWER Sinus Arrest Which side of the sternum would you place V2 if the patient had dextrocardia? - CORRECT ANSWER Right V3 should be placed halfway between which two leads? - CORRECT ANSWER V2 and V4 The presence of an inverted or absent P wave indicates what type of arrhythmia? - CORRECT ANSWER Junctional Arrhythmia 1 minute of an EKG strip is equivalent to how many millimeters in length? - CORRECT ANSWER 1500 mm A full cycle of Ventricles in action is shown as what on the EKG tracing? - CORRECT ANSWER QT interval What is a more medically correct term for chest pain? - CORRECT ANSWER Angina When the ventricles remain depolarized (contracted), what is shown on an EKG tracing - CORRECT ANSWER ST segment The normal human heart rate is between ___ and ___ bpm. - CORRECT ANSWER 60 and 100 bpm An Inverted T Wave is an indicator for what type of arrhythmia? - CORRECT ANSWER Ischemia The distance between R wave to R wave can be used to calculate what kind of rate? - CORRECT ANSWER Ventricular Rate What arrhythmia is associated with having a heart rate of over 100 bpm? - CORRECT ANSWER Sinus Tachycardia When 4 chambers of the heart are at rest, what is shown on the EKG tracing? - CORRECT ANSWER Baseline Oxygen/Carbon Dioxide exchange takes place in the ___?___ of the lungs. - CORRECT ANSWER Alveoli