Cardio Exam Flashcards
Pt walks into Drs Office
Sequence of what we wanna measure
- BP, HR, RPP (HR x SBP), Heart sounds, Auscultation, CO (HR x SV, blood/min)
- NOTE: SV= Blood/beat aka blood w/ every “stroke” of heart
More on RPP
HR x SBP
Metabolic demands on heart
Incremental Exercise
What happens to **HR and CO? **
CO= HRxSV
- Incs LINEARLY w/ INCing work rate
- Reaches plateau @ 100% VO2max
Incremental Exercise
BP–what happens/Normal response?
Overall Mean Arterial Pressure (MAP)
- SBP INC’s
- DBP remains fairly constant (-10 to +10 is OK
Practice!
PT doing ex. stress test 45yo male. Pt resting vitals are BP 130/90 (stage I HTN). HR 75, RR 24. ABNORM response to ex?
If SBP DECs to 100mmHg
**SHOULD INC w/ inc workload and linearly w/ HR
NOTE: >20 mmHg drop==SERIOUS CONCERN
PRACTICE!
Pts PMH includes hypercholesterolemia, T2DM. SBP is 122 DBP is 77. What stage HTN?
122/77
Elevated BP
NOTE that “Pre-HTN” no longer a thing!!!
BP Guidelines!!!
- Normal= SBP <120 and DBP <80
- Elevated= SBP 120-129 and DBP <80
- Stage I HTN= SBP 130-139 or DBP 80-89
- Stage II HTN= SBP at least 140 or DBP at least 90
BP Guidelines:
Hypertensive Crisis
SBP >180 and/or DBP >120, w/ pts needing prompt changes in meds if there are no other indications of probs, or immediate hospitalization if there are no signs of organ damage
Nervous System Regulation of HR
Things to note
SNS== Fight or Flight
- Sympathetic N. sends signal to SA and AV node
PNS== Rest and Digest
- Parasympathetic Vagus (CN X) sends signal to SA node and AV node
Practice!!!
32yo healthy male working on stationary bike in OPPT. After 4 mins of constant-load, sub-max ex, VO2 reaches steady state: indicates that?
ATP demand being met aerobically
Steady State VO2–>Plateau in O2 uptake attained w/in 1-4mins CONSTANT exercise.
What should you think about when thinking about **Altitude training? **
Raul’s first date!!! Very NERVOUS! High SNS activity!! EVERYTHING IS HEIGHTENED!!!
Ex. First date, NPTE== INC SNS
Terms to know
- BP
- HR–Tachy= fast >100; Brady= slow <60
- SV=blood/beat or stroke
- CO= HR x SV
Altitude training===
Think first exciting thing you did!!!
INC SNS**
Practice!
30yo male visits town 9000ft above sea lvl (altititude). INITIAL CV responses during first week?
EVERYTHING heightened!!
A: Incd BP, INCd CO w/ TACHYcardia and no sig change in SV
CO=HRxSV
Rationale: Bc INC HR will raise CO–so SV stays relatively stable
SV does not have to raise since HR already incd CO
Altitude changes
Ex. to remember?
Rahul goes to the mnt for his GF–NERVOUS= INC SNS
Altitude Changes
Initial vs Acclimatization (takes ~3wks)
Initial
- HR inc
- BP inc
- CO inc
- SV NO change (doesnt have to raise since HR incd CO)
Acclimatization
- HR inc
- BP norm
- CO norm
- SV DECs– no need for INC since CO now normal
Acute hypoxia (Initial altitude change)
SNS Activation response?
INC HR
INC CO
INC BP
INC myocardial contraction velocity
Aquatic Therapy
What should you remember?
Rahul goes to the BEACH w/ his GF!
Heart is HAPPY
- HR Dec
- BP Dec
- SV Inc (bc more efficient)
- CO Inc (bc more blood flow) = HRxSV