A middle-aged patient presents for her annual physical examination in seemingly good health. She has a blood pressure of 128/83 mm Hg, and echocardiography indicates that end-diastolic volume is 140 mL and end systolic volume is 80 mL. A routine ECG is obtained and is shown below. The ECG reveals the patient is in normal sinus rhythm with an R-R interva of 0.76 seconds. This corresponds to a heart rate of: 70 beats/min 74 beats/min 79 beats/min 84 beats/min 88 beats/min
A middle-aged patient presents for her annual physical examination in seemingly good health. She has a blood pressure of 128/83 mm Hg, and echocardiography indicates that end-diastolic volume is 140 mL and end systolic volume is 80 mL. A routine ECG is obtained and is shown below. The ECG reveals the patient is in normal sinus rhythm with an R-R interva of 0.76 seconds. This corresponds to a heart rate of: 70 beats/min 74 beats/min 79 beats/min 84 beats/min 88 beats/min
Human Physiology: From Cells to Systems (MindTap Course List)
9th Edition
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Lauralee Sherwood
Chapter9: Cardiac Physiology
Section: Chapter Questions
Problem 15RE
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Question
![A middle-aged patient presents for her annual physical examination in
seemingly good health. She has a blood pressure of 128/83 mm Hg, and
echocardiography indicates that end-diastolic volume is 140 mL and end-
systolic volume is 80 mL. A routine ECG is obtained and is shown below.
The ECG reveals the patient is in normal sinus rhythm with an R-R interval
of 0.76 seconds. This corresponds to a heart rate of:
70 beats/min
74 beats/min
79 beats/min
84 beats/min
88 beats/min](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe6a3d378-b648-4578-a8d0-6b642cc46304%2F5908b6ab-9dae-4234-91d0-c9bfe59f5967%2Flfgtjpm_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A middle-aged patient presents for her annual physical examination in
seemingly good health. She has a blood pressure of 128/83 mm Hg, and
echocardiography indicates that end-diastolic volume is 140 mL and end-
systolic volume is 80 mL. A routine ECG is obtained and is shown below.
The ECG reveals the patient is in normal sinus rhythm with an R-R interval
of 0.76 seconds. This corresponds to a heart rate of:
70 beats/min
74 beats/min
79 beats/min
84 beats/min
88 beats/min
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