QuestionSBA
QuestionChoice
It is important to know the equations for calculating cardiac output, ejection fraction and mean arterial blood pressure for this question. They are listed below:

MAP = DP + 1/3(SP-DP)
SV = EDV – ESV
CO = HR x SV
EF = SV/EDV x 100

SV = stroke volume, SP = systolic pressure, DP = diastolic pressure, HR = heart rate
10002102
a
CO: 10.8L, EF: 56%, MAP: 107mmHg
QuestionChoice
None of the above is correct. It is important to know the equations for calculating cardiac output, ejection fraction and mean arterial blood pressure for this question. They are listed below:

MAP = DP + 1/3(SP-DP)
SV = EDV – ESV
CO = HR x SV
EF = SV/EDV x 100

SV = stroke volume, SP = systolic pressure, DP = diastolic pressure, HR = heart rate
10002106
e
CO: 11.5L, EF: 67%, MAP: 93mmHg
QuestionChoice
None of the above is correct. It is important to know the equations for calculating cardiac output, ejection fraction and mean arterial blood pressure for this question. They are listed below:

MAP = DP + 1/3(SP-DP)
SV = EDV – ESV
CO = HR x SV
EF = SV/EDV x 100

SV = stroke volume, SP = systolic pressure, DP = diastolic pressure, HR = heart rate
10002105
d
CO: 11.5L, EF: 62%, MAP: 103mmHg
QuestionChoice
Whilst EF and MAP are correct here, CO is not. Calculate cardiac output using this equation: HR x SV
10002104
c
CO: 11.5L, EF: 56%, MAP: 107mmHg
QuestionChoice
Whilst the cardiac output and MAP are correct here, the ejection fraction is not. Calculate ejection fraction using this equation: SV/EDV x 100
10002103
b
CO: 10.8L, EF: 62%, MAP: 103mmHg
Concept
Chapter
2693
4008
Cardiac calculations
Topic
134
Cardiology
12967
A 56-year-old female presents to A&E with shortness of breath, wheeze and a fever. She is suspected to have a COVID-19 infection. Further investigations are conducted.

Her observations are: O2 saturation 89% on BiPAP, heart rate 78bpm, respiratory rate 22 breaths/minute, blood pressure 152/85mmHg and temperature 38.4 degrees Celsius.

A Schwanz ganz catheter indicates her end-diastolic volume (EDV) to be 248 mL and end-systolic volume (ESV) to be 109 mL.

Which of the following describes her cardiac output (CO), ejection fraction (EF) and mean arterial blood pressure (MAP)?
a