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Exercise Testing 2
chap 5 and max vo2
36
Anatomy
Undergraduate 4
12/02/2011

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Term
Max VO2
Definition
direct estimation uses open-circuit spirometry to physically measure the volumes and contents of each inspired and expired breath while exercising at max
Term
VO2 provides important info about
Definition

CV function

how much we take in

deliver

use

Term
vo2 max is not as common in ____ patients
Definition
CAD
Term
VO2 Max is on of the best predictors of ______
Definition
a person's ability to excel in aerobic or endurance sports
Term
Max VO2 Evaluates
Definition

VO2

VCO2

RQ or RER

Minute Ventilation (Ve)

Anaerobic threshold (AT)

Ventilatory Threshold (VT)

Term
Measurement of VO2 tells
Definition

potential for endurance and will provide a true assessment of fitness levels

 

Term
Increasing VO2 =
Definition
increasing fat utilization and performance
Term
RQ or RER
Definition

the ratio of the volume of CO2 expired to the volume of O2 consumed in a given period of time

also determines the fuel source metabolized

Term
RER of fat
Definition
.7
Term
RER of protein
Definition
.85
Term
RER of Carbohydrates
Definition
1.00
Term
Minute Ventilation
Definition
amount of air available to you
Term
anaerobic threshold
Definition
point where lactate begins to accumulate in the bloodstream
Term
untrained individuals AT
Definition
approx 55%
Term
elite endurance athletes AT
Definition
80-90% of VO2 Max
Term
MVV
Definition

max breathing capacity

 

Term
MVV can be estimated by taking
Definition
FEV1 x35
Term
healthy subjects reach only approx _____ of the ventilatory capacity (MVV)
Definition
60-70%
Term
VE Max
Definition
max minute ventilation
Term
Patients with a high probability of disease are tested:
Definition

to asses residual MI

to assess threatening ventricular arrythmias

for prognosis rather than for diagnostic purposes

Term
exercise testing after MI can be performed:
Definition

before or soon after hospital discharge for prognostic assessment

for activity prescription

for evaluation of furthur medical therapy

for interventions

Term
functional exercise testing is valuable for
Definition

activity counseling

exercise prescription

return-to-work evaluations

disability assessment

helping to estimate prognosis

 

Term
treadmill testing provides a more common form of
Definition
physiologic stress 
Term
subjects are more likely to attain a _____ o2 consumption and peak HR during treadmill test than during cycle ergometer test
Definition
slightly higher
Term
it is easier to obtain better quality ECG recordings and blood pressure measurements because
Definition
there is less movement of the patients arms and thorax
Term
cycle ergometer may be difficult for patients because
Definition
it is an unfamiliar method of exercise for many and is highly dependent on patient motivation
Term
lower values for max o2 consumption during cycle ergometer test can range from_____ and depend on _______
Definition
5-25%; habitual activity, physical conditioning, and leg strength
Term
because smaller muscle mass is used during arm ergometry, max o2 consumption is generally _____ lower than that obtained during treadmill testing
Definition
20-30%
Term
protocol employed during an exercise test should consider
Definition

purpose of evaluation

specific outcomes desired

characteristics of indivdual being tested

Term
advantages of ramp approach
Definition

avoidance of large and unequal increments in workload

uniform increase in hemodynamic responses

more accurate estimates of exercise capacity and ventilatory threshold

individualization of test protocol

targeted test duration

Term
common variable assessed during clinical exercise testing
Definition

HR

BP

ECG changes

subjective rating

signs and symptoms

expired gases

ventilatory responses

Term
HR and BP responses should be measured
Definition
before, during, and after GXT
Term
absolute indications to stop test
Definition

drop in SBP >10 mm HG

Moderately severe angina

Cyanosis

technical difficulties monitoring the ECG

Subjects desire to stop

sustained VTach

ST elevation

Term
Relative indications
Definition

ST or QRS changes such as excessive ST depression

arrythmias other than sustained VTACH

fatigue, shortness of breath, weezing

development of BBB

increasing chest pain

 

Term
to acheive max sensitivity patients should
Definition
assume supine position during postexercise period
Term
monitoring should continue for atleast ____ after exercise of until ECG changed return to baseline and significant signs and symptoms resolve
Definition
5 minutes
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