437 results
The JT Interval and Pro-Arrhythmic Risk
Measured from the J-point to the end of the T-wave, the
The JT Interval ... T-wave, the JT interval ... you use the JT Interval ... Pacing Prolonged JT interval ... than prolonged QT interval
Colorectal Cancer Screening and Polyp Surveillance Intervals
Colon Cancer Screening - Modality - Interval:
 • Colonoscopy -
Polyp Surveillance Intervals ... Screening - Modality - Interval ... Multitarget DNA stool test ... Polyp Surveillance Intervals ... #Surveillance #Intervals
QT/QTc- Interval
•	Start of Q-wave to end of the T-wave (time of ventricular depolarization + repolarization).
•	Life threatening
QT/QTc- Interval ... Prolonged QT/QTc interval ... boxes then QT interval ... • QT interval ... preceding R-R interval
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
P wave and PR interval ... normal • The PP intervals ... • The P to P interval ... shorter than the intervals
QT / QTc Interval Measurement in Irregular Rhythms
2 Approaches:
 • Measure and calculate the QTc for
QT / QTc Interval ... (using the RR interval ... associated QT interval ... QTc for the QT intervals ... EricsMedicalLectures/ #QT #QTc #Interval
Antiarrhythmics - Vaughan Williams Classification
Class I (Ia, Ib, Ic) - Na+ Channel Blockade
 • Slows depolarization
and prolongs PR interval ... • Prolongs QT interval ... and prolongs PR interval
Arrhythmias - Differential Diagnosis Algorithm

Bradyarrhythmia (<60 bpm)
 • Sinus Bradycardia
 • Sick Sinus Syndrome
 • SA
(constant R-R Interval ... (variable R-R interval ... (constant R-R Interval ... (variable R-R interval
Figure 1. The normal #pelvic #floor at rest during #rectal #examination. The #internal anal #sphincter #muscle
pelvic #floor at rest ... The #internal anal ... hidden” by the #external ... demonstrates the internal
Piriformis Test (FAIR Test - Flexion, Adduction, and Internal Rotation)

Flex the hip to 90 degrees, then
Piriformis Test ... (FAIR Test - Flexion ... Adduction, and Internal ... then adduct and internally ... is a positive test
Second Degree AV Block Type I aka Mobitz I / Wenckebach 
 • Normal P waves.
shortening of the RR interval ... • The RR interval ... the shortest RR interval