A client in cardiac arrest is given 40 units of vasopressin (Pitressin) IV push. The nurse knows the desired action of this medication in a cardiac arrest is to

  1. raise blood pressure.
  2. stop cardiac arrhythmia.
  3. lower blood pressure.
  4. reset the electrical cardiac conduction system.
Number 1 is correct.
The anticipated action of vasopressin administered during a cardiac arrest is to raise blood pressure. This is an antidiuretic drug, which works by reabsorbing water in the renal tubules.