8. chf and atrial fib Flashcards
1
Q
central circulation effects of CHF ? (4)
A
- co decreased during exercise
- central and peripheral venous pressure increased
- compensatory ventricular volume overload
- in severe cases, left ventricular increased filling pressure at rest
2
Q
peripheral effects?
A
- muscoskeletal metabolism impairments
- renal ystem dysfuntion leading to neurohormonal disturbances and pulmonary- ventilatory dysfunction
- impaired vasodilation
3
Q
4 signs and symptoms
A
dyspnea on exertion
orthopnea
fluid retention
unusual fatigue
4
Q
Central, peripheral, and ventilatoryabnormalities that adversely influence the exercise response:
A
reduced co
leg fatigue due to poor perfusion/blood flow
shortness of breathe
5
Q
peripheral abnoralities (4)
A
reduction in muscle blood flow
reduced vasodilatory response
abnormal redistribution of blood flow
endothelial dysfunction
6
Q
potential complications (4)
A
- px will progressively get worse
- more risk for sudden cardiac death
- prolongedl fatigue after exercise
- depression and anxiety higher
7
Q
2 basic approaches to AF
A
- return back to sinus rhythm
- control ventricular response
8
Q
5 exercise considerations w AF px :
A
- medication
- BBB: may mask ischemia
- LVH : may mask ischema
- BP may be hard to take orunrelaible due to ventricular implications
- The age predicted HR max is not reliable
9
Q
4 major factors whe presvribing ex
A
- unrelaible pulse rate for prescription
- varaiation in ventricular rate during day
- underlying heart cond
- if they have had a stroke before
10
Q
indications for a permanent pacemaker (4)
A
- sinus node dysfunction
- symptomatic bradycardia
- hypersensitive carotid sinus
- third degree blocka nd advanced 2nd degree block
11
Q
ex programming considerations w pacemakers
A
- upper body rigoroud acts avoided in 4-6 weeks
- below 10 beats of antitacycardia
threshold for ICD - awareness of hr thresholds
- medications 3 hrs before exercise
12
Q
whta does a icd do
A
electrically terminate potentially fatal tachyarrthmias
