The abnormal and delayed repolarization that occurs in hypokalemia is best expressed as QU, rather than QT, prolongation, since at times it can be difficult to differentiate between notching of the T wave and T- and U- wave fusion. As the serum potassium falls, the ST-segment becomes progres...
U Wave. “U” waves are small positive deflections that may be seen following the T wave. There is no clear consensus on what they represent; however, delayed repolarization of the tissue known as papillary muscle or Purkinje fibers is often seen when present. J Wave. Osborn waves or “J...
A delayed nadirVerification findings in V6QR or QS QRS Negative:SVT RS or QS with Ski Slope SVerification findings in V6Monophasic R wave What is the supporting evidence for VT?AV DissociationP waves march out, not associated with QRS complexes...
-wide S wave in leads I and V6 -less serious than LBBB AV conduction blocks occur when electrical impulses are delayed/blocked at the ___ node AV characteristics of first degree AV block -prolonged PR interval >.2sec -all P waves are followed by QRS complexes -...
- essentially puts irritable, ectopic cells out of order so extraneous signals can't initiate a rhythm what happens with a 1st degree AV block? the signal gets delayed what happens with a 2nd degree AV block? the signal skips what happens with a 3rd degree AV block? the ventricles produce...
-absolute refractory period: early part of T wave-relative refractory period: later part of T-wave what is the 5-step process to reading an EKG? 1. Determine the rate. (normal, fast, or slow)2. Determine the regularity. (regular or irregular)3. Assess the P waves. (P wave present ...
-delayed depolarization results in prolongation and the rise of tall R waves with will be broad on top or notches-V1 and V2 show reciprocal deep S waves RBBB vs LBBB Right: Lead I wide S wave, V1 RSR'Left: Lead I large R wave, V1 large QS or rS Repolarization in RBBB Right pre...
"SA node sends impulse but gets delayed or AV node is pacing with prolonged time. PR interval increases. Rate is normal." First 3個答案選項 The following statement describes which AV heart block? "P waves normal until loss of a QRS. Progressive lengthening of PR interval over cycles. Rate...
Electrical impulse is delayed traveling through the AV Node and Bundle of His QRS; depolarization or repolarization of the ventricles? Depolarization QRS; what is the configuration? negative, positive, negative QRS; time interval for a normal QRS Complex 0.06-0.11 seconds Wide QRS complex indicates ...
D (the lead is V1, a right chest lead, and the bimodal QRS reveals there must be a bundle branch block - since we are on the right side with a right bundle branch block, the R wave is the left ventricle, on time, and the R' wave is the delayed right ventricle) The second spik...