List three significant signs and/or symptoms that, if observed with a sinus bradycardia, would require management of this dysrhythmia.
What will be an ideal response?
Question 2The rate of a sinus bradycardia is _____ beats/min.
a. slower than 60
b. 60 to 100
c. 80 to 120
d. faster than 100
Question 3Management of a patient with a sinus tachycardia might include _____.
a. identification and treatment of the underlying cause
b. administration of atropine
c. use of a pacemaker
d. vagal maneuvers, such as carotid sinus pressure
Question 4Which of the following correctly reflects the ECG criteria for a sinus rhythm?
a. More P waves than QRS complexes
b. P waves that look alike and upright in lead II, one before each QRS complex
c. Irregular atrial and ventricular rhythm
d. PR interval exceeding 0.20 seconds
Question 5Which of the following may cause a sinus bradycardia?
a. Stress or anxiety
b. Increased sympathetic tone
c. Fever
d. Hypothermia
Question 6Which of the following are possible causes of sinus bradycardia?
a. Elevated temperature, pain
b. Increased intracranial pressure, beta-blocker overdose
c. Hypoxia, fright, caffeine-containing beverages
d. Hypovolemia, administration of sympathomimetics
Question 7Which of the following leads are anatomically contiguous?
a. II, V2
b. II, III, V3
c. I, V3, V4
d. V2, V3, V4
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