Question | Answer |
HEART BLOCK | OCCURES IN THE SA NODE & VENTRICULAR CONDUCTION AREA. BLOCKS THAT PREVENT OR RETARD THE PASSAGE OF DEPOLARIZATION |
SA BLOCK | THE SA NODE STOPS PACING FOR AT LEAST ONE COMPLETE CYCLE, BUT THEN IT RESUMES PACING WITH IDENTICAL BEATS PRIOR TO THE PAUSE. |
AV BLOCK(ATRIO-VENTRICULAR) | When THE PR INTERVAL IS PROLONGED. MEASURED FROM THE BEGINNING OF THE P WAVE(Atrial depolarixation)TO THE BEGINNING OF THE QRS COMPLEX(Ventricular depolorization) |
AV BLOCK | SOME KIND OF AV BLOCK IS PRESENT IF THE PR INTERVAL IS LARGER THAN ONE LARGE SQUARE .20 |
FIRST DEGREE AV BLOCK | PR INTERVAL IS .20 OR MORE AND CONSISTANT IN EVERY CYCLE |
SECOND DEGREE BLOCKS
(SA NODE-STILL DOING IT'S JOB) | 2 DIFFERENT FROMS:WENCKEBACH OR MOBITZ |
2ND DEGREE MOBITZ | MAY APPEAR (AT A NORMAL SINUS RATE) AS 2 P WAVE TO 1 QRS COMPLEX RESPONCE THROUGHOUT THE RHYTHM-QRS COMPLEXA P WAVE WITH A DROPPED |
2ND DEGREE WENCKBACH | WHEN THE PR INTERVALS PROGRESSIVLEY GETS LONGER WITH EACH CYCLE UNTIL THE AV NODE WILL NOLONGER CONDUCT A STIMULUS FROM ABOVE AND DROP A QRS COMPLEX 2-8 BEATS |
3RD DEGREE AV BLOCK OR COMPLETE AV BLOCK | TOTAL BLOCK IS WHEN NONE OF THE ATRIAL DEPOLARIZATION CONDUCTION TO THE VENTRICLES.
YOU WILL HAVE AN INDEPENDENT ATRIAL RATE VS YOUR VENTRICULAR RATE.
JUNCTIONAL FOCUS-40-60
VENTRICULAR FOCUS 20-40 |
BUNDLE BRANCH BLOCK | WHEN THESE IS A BLOCK OF THEIR R/L BUNDLE BRANCH
1 VENTRICLE DEPOLORIZES SLIGHTLY BEFORE THE OTHER-YOU MUST HAVE WIDENED QRS INTERVAL OF .12 OR MORE WITH 2 R WAVES |
RIGHT BUNDLE BRACNCH BLOCK | DOUBLE R WAVES AND A QRS INTERVAL OF .12 OR MORE IN LEADS V1 AND V2 |
LEFT BUNDLE BRANCH BLOCK | DOUBLE R WAVES AND A QRS INTERVAL OF .12 OR MORE IN LEADS V5, AND V6 |
INCOMPLETE BBB | IF YOU DONT HAVE BOTH THE DOUBLE R WAVES AND THE WIDE QRS |
HOW DO WE MEASURE QRS INTERVAL | THE AMOUNT OF SMALL BOXES THE WIDTH OF THE BASE OF THE QRS COMPLEX |