A client is admitted to the cardiology unit for treatment for recurrent supraventricular tachycardia. Which observation by the nurse would best indicate that the client's condition can be considered hemodynamically stable?
a. The client denies any chest pain and capillary refill is less than three seconds.
b. The client's blood pressure is 88/40 mm Hg.
c. The client's pulse oximeter reads 91% on three liters nasal cannula.
d. The client's cardiac monitor shows a heart rate of 170 beats per minute.