Cardiac- Telemetry Exam Questions and Answers 100% Verified

Cardiac- Telemetry Exam Questions and Answers 100% Verified along what axis is time measured in an EKG paper? - Answer-across a horizontal axis what does each small square on an EKG strip represent? - Answer-1 mm in length 0.04 seconds what does each large square on an EKG strip represent? - Answer-5 mm in length 0.2 seconds how can a regular rhythm be calculated on an EKG strip? - Answer-when the rhythm is regular, the heart rate is 250 divided by the number of large squares between the QRS complexes i.e. 3 large squares between regular QRS complexes, the heart rate is 83 (250/3=83) how can an irregular rhythm be calculated on an EKG strip? - Answer-count the number of R waves in a 6 second strip and multiply the number by 10 i.e. 7 R waves in a 6 second strip, the heart rate is 70 (7x10=70) true or false: on a typical EKG grid, 5 small squares, or 1 large square, represent 0.2 seconds of time - Answer-true what does the P wave indicate? - Answer-atrial depolarization or contraction of the atrium *no notching or peaking should be present* what is the normal duration of the P wave? - Answer-.20 seconds (less than 5 small squares) what is the normal amplitude of the P wave? - Answer-aka height 3 mm what does the QRS complex indicate? - Answer-ventricular depolarization, or contraction of the ventricles what is the normal duration of the QRS complex? - Answer-.12 seconds should be 3 small boxes or less true or false: R waves are deflected positively - Answer-true are the Q and S waves deflected negatively or positively? - Answer-negatively what does the T wave indicate? - Answer-ventricular repolarization *should be rounded and symmetrical* what are the four basic steps to EKG interpretation? - Answer-1. are normal P waves present? 2. are the QRS complexes narrow or wide? 3. what is the relationship between P waves and QRS complexes? 4. is the rhythm regular or irregular? what can be indicated if P waves are not present before every QRS complex? - Answer- PVCs PACs Complete heart block what are the major components of normal sinus rhythm? - Answer-1. P waves normal 2. QRS complexes normal 3. there is one P wave for every QRS complex 4. the rhythm is regular 5. heart rate is WNL what is the first step in every situation where the nurse notes an irregular telemetry reading? - Answer-assess the patient! what are the major components of sinus bradycardia? - Answer-1. HR is 40-59 BPM 2. normal P waves present 3. QRS complex is normal (0.6-.12