Page 195 - Critical Care Nursing Demystified
P. 195
180 CRITICAL CARE NURSING DeMYSTIFIED
QRS
Q wave = First negative wave
after the P wave Downloaded by [ Faculty of Nursing, Chiangmai University 5.62.158.117] at [07/18/16]. Copyright © McGraw-Hill Global Education Holdings, LLC. Not to be redistributed or modified in any way without permission.
R wave = First positive wave
after the Q wave
S wave = First negative wave
after the R wave
FIGURE 4–6 • Measuring the QRS.
