Case Study 10: Hypovolemic Shock; The wife of C.W., a 70-year-old man, brought him to the emergency department (ED) at 0430. (answered)

The wife of C.W., a 70-year-old man, brought him to the emergency department (ED) at 0430. She told the ED triage nurse that he had diarrhea for the past 2 days and that last night he had a lot of “dark red” diarrhea. When he became very dizzy, disoriented, and weak this morning, she decided to bring him to the hospital. C.W.’s vital signs (VS) in the ED were 70/− (systolic blood pressure [SBP] 70, diastolic blood pressure [DBP] inaudible), pulse rate 110, respiratory rate 22, oral temperature 99.1 ° F (37.3 ° C). A 16-gauge IV catheter was inserted and a lactated Ringer’s infusion was started. The triage nurse learned C.W. has had idiopathic dilated cardiomyopathy for several years. The onset was insidious, but the cardiomyopathy is now severe. His last cardiac catheterization showed an ejection fraction of 13%. He has frequent problems with heart failure (HF) because of the cardiomyopathy. Two years ago, he had a cardiac arrest that was attributed to hypokalemia. He has a long history of hypertension and arthritis. He had atrial fibrillation in the past, but it has been under control recently. Fifteen years ago he had a peptic ulcer. ..............