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ECGS- ARRT CI EXAM QUESTIONS AND ANSWERS LATEST UPDATE
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ECGS- ARRT CI EXAM QUESTIONS AND ANSWERS LATEST UPDATE...
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ECGS- ARRT CI EXAM QUESTIONS ANDANSWERS LATEST UPDATE
ATRIAL SYSTOLE- CARDIAC CYCLE - ANSWER ATRIA CONTRACT- ATRIA PUSH
BLOOD INTO THE VENTRICLES
VENTRICULAR SYSTOLE - ANSWER VENTRICLES CONTRACT AND PRESSURES
WITHIN THEM RISE. TRICUSPID AND MITRAL VALVES CLOSE. (FIRST HEART SOUND)
RISING PRESSURE- CARDIAC CYCLE - ANSWER SEMILUNAR VALVES OPEN WHEN
PRESSURE IN THE VENTRICLES EXCEEDS THAT IN THE ARTERIES
VENTRICULAR DIASTOLE - ANSWER PRESSURE IN THE RELAXING VENTRICLES
DROPS BELOW THAT INT HE ARTERIES. SEMILUNAR VALVES SNAP SHUT (2ND
HEART SOUND)
PERIOD OF FALLING PRESSURE-CARDIAC CYCLE - ANSWER BLOOD FLOWS FORM
THE VEINS IN TO THE RELAXED ATRIA. TRICUSPID AND MITRAL VALVES CLOSE
WHEN PRESSURE IN VENTRICLES FALLS BELOW THE ATRIA.
SINOATRIAL NODE- CONDUCTION SYSTEM - ANSWER PRIMARY PACEMAKER- 60-100
BPM
ATRIOVENTRICULAR NODE - ANSWER AFTER SA NODE- DELAYS IMPULSE TO
BUNDLE OF HIS TO ALLOW ATRIA TO CONTRACT
BUNDLE OF HIS - ANSWER AFTER AV NODE- RELAYS IMPULSE TO R AND L BUNDLE
BRANCHES
, R AND L BUNDLE BRANCHES - ANSWER AFTER BUNDLE OF HIS, RELAYS IMPULSE TO
PURKINJE FIBERS
PURKINJE FIBERS - ANSWER AFTER BUNDLE BRANCHES, RELAYS IMPULSE TO
VENTRICULAR MYOCARDIUM
P WAVE REPRESENT - ANSWER ATRIAL DEPOLARIZATION (IMPULSE THROUGH
ATRIA)
QRS COMPLEX MEANING - ANSWER SPREAD OF ELECTRICAL IMPULSE THROUGH
VENTRICLES- VENTRICLE DEPOLARIZATION
Q WAVE IS ALWAYS - ANSWER NEGATIVE
SINUS HEARTRATE - ANSWER 60-100
SINUS PR INTERVAL - ANSWER .12 TO .20 SECONDS
SINUS QRS DURATION - ANSWER SECONDS
SINUS BRADYCARDIA RATE - ANSWER LESS THAN 60 BPM
PR INTERVAL IN SINUS BRADYCARDIA - ANSWER TO SECONDS
QRS DURATION SINUS BRADYCARDIA - ANSWER 0.11 SECONDS NORMAL
DRUG OF CHOICE FOR SYMPTOMATIC BRADYCARDIA - ANSWER ATROPINE
HR FOR SINUS TACH - ANSWER 101 TO 180 BPM
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