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NUR 254 ( LATEST 2024 / 2025 ) CHAP 26 | GRADED A+ QUESTIONS & ANSWERS
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NUR 254 ( LATEST 2024 / 2025 ) CHAP 26 | GRADED A+ QUESTIONS & ANSWERS
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NUR 254 Chap 261. Dysrhythmias
Answer
Disorders of formation or conduction (or both) of electrical im- pulses within heart
Can cause disturbances of Rate
Rhythm
Both rate and rhythm
Potentially can alter blood flow and cause hemodynamic changes*** ekg will not tell thiss
Diagnosed by analysis of electrographic waveform
2. depolarization
Answer
electrical stimulation
3. repolatization
Answer
electrical relaxation
4. reload
Answer
volume and stretch of the myocardium and end of diastole
5. afterload
Answer
amnt ot pressure L ventricle must work to open
6. systole
Answer
ventricular contraction- depolarization
7. diastole
, Answer
ventricle relaxation
8. stroke volume
Answer
volume of blood pumped with one contraction 60-100ml
9. cardiac output
Answer
amnt of blood pumped by L ventricle in one minute 4-8L/min
10. Normal Electrical Conduction
Answer
SA node (sinus node)- AV node
Conduction Bundle of His
Right and left bundle branches
Purkinje fibers
Depolarization = stimulation = systole
Repolarization = relaxation = diastole
11. SA node
Answer
sets hr 60-100 bpm
12. MI
Answer
change in the st and t waves
13. p wave
Answer
represents atrial depolarization and sa node impluse through atria- atrial depolarization
2-3mm and 0.11 sec or less
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