A nurse knowledgeable about sinoatrial node dysrhythmias would select which of the following causes of sinus tachycardia?
Explanation
• Sinus tachycardia (ST) is defined as a sinus rhythm with a rate of greater than 100 beats per minute. Causes of ST
• In the vast majority of cases, sinus tachycardia results from some underlying conditions such as exercise, infection, or congestive heart failure, which alter the autonomic nervous system.
• Sinus bradycardia may result from the following: Valsalva's maneuver, drugs like digitalis, MI, hyperkalemia, hypothyroidism, severe hypoxia, and increased ICP.