VATI Pharmacological and Parenteral Therapies Quiz

A client with a digoxin level of 2.4 ng/ml has a heart rate of 39. The health care provider prescribes atropine sulfate. Which of the following best describes the intended action of atropine for this client?Select one:a. To accelerate the heart rate by interfering with vagal impulses. Atropine accelerates the heart rate by interfering with vagal impulses. It is given IVP at doses of 0.5mg to 1.0mg per dose; every 3 to 5 minutes; up to 2.0mg. Doses less than 0.5mg may cause a paradoxical slowing of the heart rate. When Atropine is given to a client with history of an MI it should be used with great caution; increasing the heart rate also increases myocardial oxygenconsumption!b. To stimulate the SA node and sympathetic fibers to increase the rate.c. To dry oral and tracheobronchial secretions.d. To reduce peristalsis and urinary bladder tone. angelavilasebod Verified Expert Answer: a. Step-by-Step explanation To accelerate the heart rate by interfering with vagal impulses. Inhibition of vagal impulses is the mechanism through which atropine speeds up the heart rate. Doses of 0.5mg to 1.0mg are administered IVP every 3-5 minutes for a maximum dosage of 2.0mg. A paradoxical slowing of the heart rate may occur at doses less than 0.5mg. Because raising the heart rate also increases myocardial oxygen consumption, Atropine should be administered with care in patients having a history of a MI. How helpful was your tutor?