Test Bank Guyton And Hall Textbook Of Medical Physiology 14th Edition Hall, 9780323597128, All Chapters With Answers And Rationals

62. A 35-year-old woman had unusual sensations in her chest after she smoked a cigarette. Her ECG tracing is shown above. What is the likely diagnosis? A) Premature contraction originating in the atrium B) Premature contraction originating high in the A-V node C) Premature contraction originating low in the A-V node D) Premature contraction originating in the apex of the ventricle E) Premature contraction originating in the base of the ventricle {Ans: }A 60-year-old woman has a resting heart rate of 70 beats per minute, arterial pressure of 130/85 mm Hg, and normal body temperature. Use the pressure-volume diagram of her left ventricle below to answer Questions 1-4. What is her cardiac output in milliliters per minute? A) 2000 B) 3000 C) 4000 D) 6000 E) 7000 {Ans: E) This patient has a heart rate of 70 beats per minute. The cardiac output can be determined by using the following formula: cardiac output = heart rate × stroke volume. The stroke volume can be determined from the figure, which is the volume change during the C-D segment, or 100 milliliters. By using this formula, you can determine that the cardiac output is 7000 millili- ters per minute.}13. Which