Test Flashcards
Hr recovery
Comparison of peak hr and recovery hr 1-2 min into recovery
Chronotropic incompetence
An attenuated hr response to exercise
85% of max
B blocker 62% of max
Sign of possible CAD
Abnormal hr recovery
Decrease <22 at 2 min supine
Exertional hypotension
SBp drop > 10 mm hg despite increase in work load
Max O2 uptake healthy adult
30-45 ml kg min
Peak vo 2 cad
13-25 ml kg min men
10-18 ml kg min women
Factors effecting vo2
⬇️ cardiac output ( may be ⬇️ due chronotropic incompetence or LV disfunction secondary to prior MI, ischemia, cardiomyopathy
⬇️ peak bld flow peripheral muscle
Peripheral skeletal muscle cellular abnormalities
Result of cardio myopathy
⬇️ EF
⬇️ stroke volume
Ischemic cascade
- Imbalance between myocardial oxygen supply and demand
- Ischemic event causing cellular abnormalities
- Abnormalities in diastolic function ( reduced vent compliance and impaired filling
- Abnormalities in systolic function
- ECG changes like ST depression
- Angina
Rate pressure product
Myocardial O2 demand
HRxSBP
Variables determining myocardial 02 demand
HR
LV pre load
Myocardial contractility
Four pathogenic factors that affect myocardial 02 demand
- Coronary artery stenosis w endothelial dysfunction
- Microvascular dysfunction
- Abnormalities of the autonomic nervous system
- Abnormalities of coagulation and fibrinolytic systems
CAD exercise intensity
40-80% hrr 1500-2000 kcal expenditure
Angina exercise intensity
40-80% hrr or 10 beats below ischemic threshold
Initial cardiac exrx
5-10 min warm up cool down including stretching rom low intensity aerobic activity
Progressing to 30-60 min aerobic exercise as tolerated
40-80% hrr or 10 beats below ischemic threshold or defibrillation threshold
RPE 11-14
Resistance training 50-60/80% 1 RM
8-10 or 10-15 reps 1set 2-3 days
RPE 11-14
Cardiac transplant exrx resistance
7-10 exercises legs back arms shoulders
6-12 weeks post transplant
2x per wk
PAD Treatment
Risk factor modification
Weight bearing exercise
Drug therapy
Surgical revascularization
CAD surgical procedures
Catheter through arm or groin into occluded artery
Angioplasty- balloon
Stent- tube for structural integrity/ can be drug coated
Artherectomy- laser or rotating burr to break up plaque
Coronary artery bipass graph CABG
Exercise testing order
Resting measures
Hr
Bp
Body comp
Cardio respiratory fitness
Vo2 max/ open circuit spirometer ( research primarily)
Vo2 max estimate sub max testing
Step test
CRF
Max or sub max
Ex: Queens college
Absolute Contraindications for exercise testing 9
A recent change in resting ECG (ischemia/MI/cardiac event)
Unstable angina
Uncontrolled symptomatic dysrhythmias or hemodynamics compromise
Symptomatic aortic stenosis
Uncontrolled heart failure
Acute pulmonary embolus or pulmonary infarction
Acute myocarditis or pericarditis
Dissecting aneurysm
Acute systemic infection
Relative contraindications to exercise testing 12
Left main coronary stenosis
Mod steno tic valvular heart disease
Electrolyte abnormalities
S bp of >200 and d bp > 110 at rest
Tachy or bradydysrythmia
Hypertrophic cardiomyopathy outflow obstruction
Musculoskeletal or nueromotor disorder exacerbated by exercise
Av block
Ventricular aneurysm
Uncontrolled metabolic disease
Chronic infection
Mental or physical impairment
Bruce max exercise protocol
3 min stages
- 7 10
- 5 12
- 4 14
- 2 16
- 0 18
- 5 20