PRINCIPLES OF HUMAN PHYSIOLOGY (LCPO)
6th Edition
ISBN: 9780134289359
Author: STANFIELD
Publisher: PEARSON
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Chapter 13, Problem 32E
Jane trained for a marathon for 6 months. Her resting heart rate is 50 beats/mm and her blood pressure is 105175 mm Hg. Jane’s roommate. Sue, watches a lot of TV and has a resting heart rate of 85 beats/mm and blood pressure of 135/85 mm Hg. Both women have the same resting cardiac output of 5.0 literslmiri. Determine the resting stroke volume and mean arterial pressure for each woman. Based on your findings, whose heart is beating more efficiently?
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The end systolic volume from an individual’s heart was found to be 50 ml, the end diastolic volume was found to be 110 ml and the heart rate was 90 bpm. What is this individual’s stroke volume, ejection fraction and cardiac output (C.O)?
Group of answer choices
SV = 60 ml Ejection Fraction = 50% C.O = 3.4 l/min
SV = 110 ml Ejection Fraction = 52% C.O = 4.4 l/min
SV = 60 ml Ejection Fraction = 55% C.O = 5.4 l/min
SV = 160 ml Ejection Fraction = 70 % C.O = 6.4 l/min
200
Curve 1
175
Curve 2
150
125
Curve 3
100
75
50
25
50
100
150
200
250
300
350
400
LV End Diastolic Volume (mL)
Use the information in this paragraph and the image above to answer the question
below. This figure shows the relationship between EDV and SV. Curve 2 is
representatíve of a normal individual sitting on a bike, resting. There are two other
curves illustrated and there are multiple points landmarked with a "o" and the letters
"A to F". You can assume that the only changes in relevant variables are described in
each question. If a variable is not mentioned you can assume that it has not changed.
The starting point is "A". Select an appropriate pointif there was an increase in cardiac
inotropy.
23
D.
Stroke Volume (mL)
1. Sue has a resting stroke volume of 72 ml/beat and an average resting heart rate of 70 beats/minute. What is her cardiac output (CO). Remember to include correct units in your answer.
2.Sue goes to the gym and after an initial warm-up, she increases her exercise level pushing herself to maximum. At this point her heart rate is 175 beats/min and her stroke volume is 135 ml/beat. What is her cardiac output now?
3 At this point, by how many ml/min has her CO increased over her resting CO?
4. What % increase over resting is this? (Use the following equation).
amount of increase in CO in ml/min
% increase = _______________________X 100%
original CO (resting) ml/min
5. What term is used to describe this increase in CO?
Chapter 13 Solutions
PRINCIPLES OF HUMAN PHYSIOLOGY (LCPO)
Ch. 13.1 - What are the “receiving chambers” of the heart...Ch. 13.1 - Prob. 13.1.2QCCh. 13.1 - Prob. 13.1.3QCCh. 13.2 - Prob. 1CTQCh. 13.2 - Prob. 2CTQCh. 13.2 - Prob. 3CTQCh. 13.2 - Which organs receive blood flowing through the...Ch. 13.2 - Prob. 13.2.2QCCh. 13.2 - Prob. 13.2.3QCCh. 13.3 - Prob. 13.3.1QC
Ch. 13.3 - Prob. 13.3.2QCCh. 13.3 - Prob. 13.3.3QCCh. 13.3 - Prob. 13.3.4QCCh. 13.4 - Under normal conditions, which controls the...Ch. 13.4 - Arrange the order of the following terms so that...Ch. 13.4 - The entry of calcium into a ventricular muscle...Ch. 13.4 - Match the terms P wave. QRS complex. and T wave...Ch. 13.5 - Prob. 13.5.1QCCh. 13.5 - Descnbe the relationship between the different...Ch. 13.6 - Write the equation showing the relationship...Ch. 13.6 - Prob. 13.6.2QCCh. 13.6 - Prob. 13.6.3QCCh. 13.6 - What is Starlings law of the heart? Why is it an...Ch. 13.6 - Prob. 13.7.2QCCh. 13.6 - Prob. 13.7.3QCCh. 13 - Prob. 1ECh. 13 - Prob. 2ECh. 13 - Prob. 3ECh. 13 - Prob. 4ECh. 13 - Prob. 5ECh. 13 - Which of the following contains deoxygenated...Ch. 13 - Which of the following is not normally apparent in...Ch. 13 - The second heart sound occurs when the semilunar...Ch. 13 - Prob. 9ECh. 13 - Prob. 10ECh. 13 - Prob. 11ECh. 13 - Prob. 12ECh. 13 - Prob. 13ECh. 13 - Prob. 14ECh. 13 - Prob. 15ECh. 13 - Prob. 16ECh. 13 - Prob. 17ECh. 13 - Prob. 18ECh. 13 - Prob. 19ECh. 13 - Under normal conditions, pressures in the left and...Ch. 13 - Stroke volume and ____ completely determine...Ch. 13 - If end-diastolic volume does not change but...Ch. 13 - Prob. 23ECh. 13 - Prob. 24ECh. 13 - Prob. 25ECh. 13 - Prob. 26ECh. 13 - Prob. 27ECh. 13 - Prob. 28ECh. 13 - Describe the process of action potential...Ch. 13 - Prob. 30ECh. 13 - Prob. 31ECh. 13 - Jane trained for a marathon for 6 months. Her...Ch. 13 - Cardiac arrhythmias are often treated with...Ch. 13 -
Damage to a valve can often be detected by...Ch. 13 - In the ECG trace below, label all of the P. QRS....
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Indicate whether each of the following variables has a direct or inverse relationship to Cardiac Output.arrow_forwardA 65 years old male patient with history of heart disease came to his doctor’s office for annual physical exam. On examination, his pulse was 78/minute, respiration 18/minute, temperature was 95.30F. His blood pressure was recorded as 170/93mm Hg. Further tests revealed the patient’s stroke volume as 65 ml/beat and ESV as 80 ml. From this short history answer/calculate the following: Cardiac output: EDV: Ejection fraction:arrow_forwardA patient has a heart rate of 60 beats/min, an end diastolic volume of 150mL, and an end systolic volume of 60mL. What is this patient's cardiac output? O 12.6 L/min O 5.4 L/min 6.3 L/min O 90mL/minarrow_forward
- An elderly man presents to the emergency department with chest pain. He has a history of stable angina and recent onset diabetes mellitus, but now the chest pain comes on with less exertion and takes longer to g0 away. An ECG and cardiac enzymes are ordered. If this man has unstable angina, what are the expected findings on ECG and cardiac enzyme testing? (4) Delta waves on the ECG and elevated cardiac enzyme levels (B) Low voltage ECG and elevated cardiac enzyme levels {€) No changes on ECG and elevated cardiac enzyme levels (D) ST-segment depressions on ECG and normal cardiac enzyme levels () ST-segment elevations with Q waves and Normal cardiac enzyme levelsarrow_forwardA 43-year-old woman has congestive heart failure after a myocardial infarction. Before the myocardial infarction, she had a cardiac output of 5 L/min and a right atrial pressure of 0 mm Hg at rest. The solid curve in the graph shows the relationship between right atrial pressure and cardiac output in a normal heart. Which of the following lettered points best represents the change in this relationship after the development of congestive heart failure?arrow_forwardComponent Amplitude(mV) Duration (s) P wave 0.046 0.07 QRS complex 0.839 0.08 T wave 0.061 0.2 Describe the physiological events in the heart muscle represented by each ECG component (the P wave, the QRS complex, and T wave). Why does the QRS complex have the largest amplitude?arrow_forward
- A 25-year-old healthy 70kg person has the following findings: heart rate: 70bpm EDV: 130ml ESV: 60ml body surface area: 1,7msq calculate the cardiac indexarrow_forwardTable 1 Blood pressure recordings for all positions Body positions Mean systolic BP Mean diastolic BP Sitting position Standing position Supine position Supine position with crossed legs 102-8 + 11-4 65-7 + 82 99.9 + 10-2 66-0 + 8-7 107-9 + 10-7 66-9 + 96 107-0 + 86 66-7 + 7-3 F= 444, P 00s BP, blood pressure. Table 2 Pairwise comparisons between positions in systolic BP Sitting position position Standing Supine position Standing position Supine position Supine position with crossed legs *, the mean difference is significant at the level 0-05 level. Adjustment for multiple comparisons: Bonferroni. Does age factor has any influences in the blood pressure with the change of body positions?arrow_forwardA 43-year-old man participated in a treadmill exercise test during which the angle of incline was increased every 3 minutes. At rest, his pulse is 74/min and his blood pressure is 132/82 mm Hg. Fourteen minutes after he starts exercising on the treadmill, which is peak exercise, his pulse is 140/min and his blood pressure is 146/86 mm Hg. Which of the following changes in myocardial consumption and coronary blood flow are most likely at this time Myocardial Oxygen Consumption Coronary blood flow a. Increase Increaseb. Increase No change c. Increase Decrease d. No change Increase e. No change Decrease f. Decrease Increaseg.…arrow_forward
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