Exam (elaborations)
Part 2 Topic 3_ Dysrhythmias (1).
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Part 2 Topic 3_ Dysrhythmias (1).
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Part 2 Topic 3: Dysrhythmiasarrhythmia= deviations from normal cardiac rate or rhythm - ANS-Cardiac Dysrhythmia
damage to the conduction system
electrolyte disturbances
exaggerated autonomic effect
fever
hypoxia
infection
drug induced - ANS-cardiac dysrhythmia causes
ECG lead ll-traces the different types of erythmias and everything is recorded using this
Holter monitor 24hr
event recorder-intermittent problems-can stay with weeks-months - ANS-monitoring of
dysrhythmia
according to rate-tachyarrhthmias >100/m
bradyarrythmias <60/min - ANS-classifications according to rate
regular and irregular - ANS-classification according to rhythm
supraventriculare-atrial/junctional
ventricular - ANS-classification according to origin
sinus tachycardia
sinus bradycardia
sick sinus syndrome - ANS-SA node abnormalities
regular >100 and <160/min
from stress/exercise - ANS-sinus tachycardia
regular <60/min
from parasympathetic, beta blockers - ANS-sinus bradycardia
SAN malfunction with alternating tacky/brady cardia irregular - ANS-sick sinus syndrome
premature atrial contractions
atrial flutter
atrial fibrillation - ANS-Atrial conduction abnormalities
, ectopic beats from irritable atrial muscle cells outside conduction pathway - ANS-premature
atrial contractions
where hr is really fast at 160-350/min
with a slower ventricular rate (av nodal delay)-regular - ANS-atrial flutter
no proper contracting
atrial rate >350
no P wave
slower ventricular rate-irreg
risk of thrombosis - ANS-atrial fibrillation
supraventricular tachycardia (SVT)
Heart Block - ANS-AV Node abnormalities
fast heart rate with any type that originates at or above AV node with a rate >150/min all
conducted to ventricles that respond
to every single beat
no distinct P wave-normal QRS
wolf parkinson white - ANS-supraventricular tachycardia
slow
abnormal delay or stoppage of conduction at AV node or bundle of HIS=atrioventricular -
ANS-heart block
above ventricles at or above AV node
rate >150/min all conducted to ventricles
no distinct P wave
special type WPW syndrome - ANS-Supraventricular tachycardia origin
1st and 2nd degree=incomplete
3rd=complete - ANS-Heart block types
conduction delay and is consistently prolonged
PR interval >0.2 seconds - ANS-first degree heart block
type 1 (mobitz 1)
type 2 mobitz 2 - ANS-second degree AV block
progressive prolongation of the PR interval until QRS is dropped - ANS-type one second degree
av block
intermittently non-conducted P waves not preceded by progressive PR prolongation - ANS-type
2 second degree AV block
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