Continuous ecg readings-the correct answer is c: continuous ecg readings.procainnamide (pronestyl) is used to suppress cardiac arrythmias. when administered intravenously, it must be accompanied by continuous cardiac monitoring by ecg.test taking tip:ask yourself: what category of drug is pronestyl? if you remember that it is a cardiac drug, notice that option 3 is the only heart answer. option 1 is renal, option 2 is vascular, and option 4 is neurological. if guessing, note options 2 and 4 are general and eliminate. options 1 and 3 have time components. of the time components the continuous is better than hourly during an iv medication administration.