Cardiac- Telemetry Questions With Correct Answers!!

along what axis is time measured in an EKG paper? - ANSWERacross a horizontal axis what does each small square on an EKG strip represent? - ANSWER1 mm in length 0.04 seconds what does each large square on an EKG strip represent? - ANSWER5 mm in length 0.2 seconds how can a regular rhythm be calculated on an EKG strip? - ANSWERwhen 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? - ANSWERcount 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 - ANSWERtrue what does the P wave indicate? - ANSWERatrial 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? - ANSWERaka height >3 mm what does the QRS complex indicate? - ANSWERventricular depolarization, or contraction of the ventricles what is the normal duration of the QRS complex? - ANSWER>.12 seconds