Cardio Examination & EKG Flashcards
Rate Pressure Product: equation & definition
RPP = HR * SBP
Estimation of myocardial workload & O2 demand.
Cardiac Output: equation & definition
CO = HR * SV
Amount of blood pumped in 1min.
Stroke Volume definition
Amount of blood pumped in 1 beat.
Venous Return definition
Amount of blood returning to the heart (usually equal to CO)
Normal BP
SBP <120
AND
DBP <80
Elevated BP
SBP 120-129
AND
DBP <80
Stage 1 HTN
SBP 130-139
OR
DBP 80-89
Stage 2 HTN
SBP >140
OR
DBP >90
Hypertensive Crisis
> 180/120
HR and CO changes with exercise
Increases linearly with increased work rate.
Plateaus at 100% VO2max.
BP changes with exercise
SBP increases.
DBP remains constant (+/-10mmHg is ok).
How do vitals change INITIALLY with high altitude (acute hypoxia)?
HR: increase
BP: increase
CO: increase
SV: no change
RR: increase
How do vitals change once ACCLIMATIZED to high altitude?
HR: increase
BP: normal
CO: normal
SV: decrease
RR: normal
How do vitals change with aquatic?
HR: decrease
BP: decrease
VO2: decrease
Vital Capacity: decrease
CO: increase
SV: increase
Work of Breathing: increase
Nervous system response to high altitude & aquatic:
a) Altitude causes PNS activation. Aquatic causes PNS activation.
b) Altitude causes SNS activation. Aquatic causes SNS activation.
c) Altitude causes SNS activation. Aquatic causes PNS activation.
d) Altitude causes PNS activation. Aquatic causes SNS activation.
c) Altitude causes SNS activation. Aquatic causes PNS activation.
Beta-Blockers are prescribed for..
CAD
HTN
How do vitals change with Beta-Blockers?
Reduced HR, contractility, and myocardial O2 demand.
Lower HR during both submax & max exercise (still increases from resting HR, but lower compared to no meds).
How to determine exercise intensity with beta-blockers?
RPE!
Borg RPE Scale
6 = no exertion at all
7.5 = extremely light
9 = very light
11 = light
13 = somewhat hard
15 = hard
17 = very hard
19 = extremely hard
20 = max exertion
Recommended RPE for cancer
11-13
Recommended RPE for obesity
up to 17
Recommended RPE for pregnancy
11-13
Recommended RPE for diabetes
11-13, progress to 12-16
Auscultation landmark: aortic valve
Right 2nd IC space, sternal border
Auscultation landmark: pulmonary valve
Left 2nd IC space, sternal border
Auscultation landmark: tricuspid valve
Left 4th IC space, sternal border
Auscultation landmark: mitral valve
Left 5th IC space, midclavicular line