A 65-year-old woman with type 2 diabetes presents to the emergency department; she is short of breath and complaining of neck and shoulder pain. Her blood pressure is 185/95 mm Hg, and her heart rate...

A 65-year-old woman with type 2 diabetes presents to the emergency department; she is short of breath and complaining of neck and shoulder pain. Her blood pressure is 185/95 mm Hg, and her heart rate is 155 beats per minute. How will you initially manage this patient? What medical intervention would you anticipate? List serious signs and symptoms of hemodynamic instability in a patient with a tachydysrhythmia.