CCI CRAT Exam Study Questions and Answers 2024

Heart Rate of Normal Sinus Rhythm (NSR) - 60-100 BPM Heart Rate of Sinus Tachycardia (ST) - 101+ BPM Heart Rate of Sinus Bradycardia (SB) - 59 or less BPM The horizontal axis on the grid paper records____________. - time. How many large grid blocks on the EKG paper mark one second in time? - Five (5). How long in seconds is one large block on the EKG paper? - 0.2 seconds (thus, five large blocks marks 1 second in time). The vertical axis on the grid paper records _________________. - EKG Amplitude (voltage). How many millivolts (mV) is one small block on the EKG paper? - 0.1 mV How many millivolts (mV) is one large block on the EKG paper? - 0.5 mV 10 mm equals how many millivolts (mV)? - 1.0 mV 6 mm equals how many millivolts (mV)? - 0.6 mV 3 mm equals how many millivolts (mV)? - 0.3 mV 5 mm equals how many millivolts (mV)? - 0.5 mV What is the amplitude if a complex is 22 small boxes tall, vertically? - 2.2 mV What is the amplitude if a complex is 14 small boxes tall, vertically? - 1.4 mV What is the amplitude if a complex is 7 small boxes tall, vertically? - 0.7 mV How many seconds does one small box horizontally represent? - 0.04 seconds (thus 5 small boxes horizontally, equals 0.20 seconds (one large box)). What is the normal/typical speed of EKG paper? - 25 mm/second Name the lettered components of a normal heartbeat found on an EKG? - P, Q, R, S, T,