Which of the following are possible causes of sinus tachycardia? ...

[Garrulous]

Which of the following are possible causes of sinus tachycardia?
 
  a. Hypothermia, hypovolemia
  b. Hypoxia, calcium channel blocker overdose
  c. Fever, pain, anxiety
  d. Vomiting, vagal maneuvers

Question 2

An ECG rhythm strip shows a ventricular rate of 128 bpm, a regular rhythm, a PR interval of 0.16 seconds, a QRS duration of 0.08 seconds, and one upright P wave before each QRS. This rhythm is sinus _____.
 
  a. arrhythmia
  b. bradycardia
  c. rhythm
  d. tachycardia

[frogdreck123456]

Answer to Question 1

C
Causes of sinus tachycardia include: acute myocardial infarction; caffeine-containing beverages; dehydration, hypovolemia; drugs such as cocaine, amphetamines, ecstasy, cannabis; exercise; fear and anxiety; fever; heart failure; hyperthyroidism; hypoxia; infection; medications such as epinephrine, atropine, and dopamine; nicotine; pain; pulmonary embolism; shock; sympathetic stimulation.

Answer to Question 2

D
The rhythm described fits the ECG criteria for a sinus tachycardia.