Patho U3 Dysrhythmias Exam With Complete Solutions 100% Verified!!

Patho U3 Dysrhythmias Exam With Complete
Solutions 100% Verified!!

dysarhythmia/arrhythmia - ANSWER>>disturbance of a heart rhythm



-the conduction suite, controls the rhythm of the heart



myocardial cells have - ANSWER>>potential initating and conducting impulses



pacemaker cells generate - ANSWER>>generate impulses at a raster rate and the cells
of the conduction system transmit impulses faster as well



what controls heart rhythm - ANSWER>>the conduction system



conduction system - ANSWER>>SA node (rhythmic impulse generated)

-intranodal pathways (SA to AV)

-AV node (impulse from atrial delayed before passing to ventricle)

-AV bundle (impulse from atria to ventricle)

-Purkinje system

-R/L bundle branch

-L anterior and posterior fascicle



primary pacemaker - ANSWER>>SA node

-intrinsic rate = 60-100

, if SA node fails. - ANSWER>>AV node assume pacemaker

-intrinsic rate = 40-60



purkinje system can. - ANSWER>>assume pacemaker function of the ventricles if the
AV junction fails to conduct impulses from atria to ventricle

--intrinsic rate ~15-40



P wave - ANSWER>>depolarization of the atria

-LUB



PR interval - ANSWER>>delay of AV node to allow filling of ventricles



QRS - ANSWER>>ventricular depolarization

-DUB



T wave - ANSWER>>ventricular repolarization



normal ECG rhythm - ANSWER>>P wave

PR interval

QRS

T wave



atrial fibrillation ECG - ANSWER>>P rate >300

No PR interval

QRS variable

Rhythm irregular ("regularly irregular")