FREE MEDICAL AND STUDY GAMES ABOUT EKG NHA CERT

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FREE MEDICAL AND STUDY GAMES ABOUT EKG NHA CERT

EXAM Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -163 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: atrial activation

Answer:

P wave Question 2: sweat or lotion on the patient's skin or tension on the electrode wires can interfere with the signal going to the EKG apparatus causing the baseline of the tracing to move up and down on the EKG paper

Answer:

Wandering baseline Question 3: can produce deflections occurring at a rapid rate that may mimic atrial flutter. This is caused by electrical appliances or apparatus being used nearby while the tracing is taken.

Answer:

60-cycle interference

Question 4: graph paper with horizontal and vertical lines at 1-mm intervals. A heavy line appears every 5mm. Running speed is 25mm/sec. Machine must be calibrate so 1mV produces a deflection of 10mm.

Answer:

EKG grid Question 5: tricuspid valve and mitral valve; located between the atria and ventricles

Answer:

atrioventricular (AV) valves

Question 6: How is lidocaine used as a pharmacological cardiovascular agent?

Answer:

drug of choice for the suppression of ventricular ectopy, including ventricular tachycardia and ventricular flutter.

Question 7: the unprivileged touching of one person by

another. When a procedure is to be performed on a patient, the patient must give consent in full knowledge of the procedure and the risk it entails (informed consent).

Answer:

battery

Question 8: What are some common pharmacological cardiovascular agents?

Answer:

oxygen, epinephrine, isoproterenol (Isuprel), dopamine (Intropin), beta blockers (Propranolol, Metoprolol, Atenolol, and Esmolol), licodaine, verapamil, digitalis, morphine sulfate, and nitroglycerin

Question 9: point at which QRS complex ends and ST segment begins

Answer:

J (RST) junction Question 10: deflection produced by atrial depolarization; does not exceed 0.1 Is in duration or 2.5mm in height in standard, limb, and precordial leads

Answer:

P wave

Question 11: What indicates a negative Holter?

Answer:

A negative Holter will have no significant arrhythmias or ST changes

Question 12: What are the adverse effect of beta blockers?

Answer:

hypotension, congestive heart failure and broncho-spasm.Question 13: How are beta blockers used as a pharmacological cardiovascular agent?

Answer:

reduce heart rate, blood pressure, myocardial contractility and oxygen consumption; effective in the treatment of angina pectoris and hypertension; useful in preventing atrial fibrillation, atrial flutter, and paroxysmal supra-ventricular tachycardia.

Question 14: Fourth intercostal space, right sternal border

Answer:

V1 Question 15: an infection control method designed to prevent direct contact with blood and other body fluids and tissues by using barrier protection and work control practices

Answer:

standard precautions

Question 16: charge of resting cardiac cells inside as compared to outside

Answer:

negative Question 17: Six positive electrodes are placed on the chest to create Leads VI through V6

Answer:

Unipolar Precordial Leads

Question 18: What are the signs and symptoms of digitalis toxicity?

Answer:

yellow vision, nausea, vomiting, and drowsiness

Question 19: located between the right atrium and the right ventricle and has three cusps

Answer:

tricuspid valve Question 20: arteries are the right and left coronary from the aorta; veins accompany the arteries and terminate in the right atrium

Answer:

vessels of the heart

Question 21: ventricular repolarization

Answer:

T wave and U wave Question 22: SA node to AV node to Bundle of His to right and left bundle branches to Purkinje fibers

Answer:

conduction system of the heart Question 23: second tier of precautions and are to be used when the patient is known or suspected of being infected with contagious disease. They are to be used in addition to standard precautions

Answer:

Transmission- Based Precautions Question 24: represents amplitude measured in millivolts but expressed in millimeters: O.lmV = 1mm

Answer:

vertical axis Question 25: the first positive deflection produced by ventricular depolarization

Answer:

R wave