Datex-Ohmeda S/5 FM, Руководство пользователя

Страница: 62 / 94

60
60
Detecting arrhythmia alarms
NOTE: A clinician must analyze the arrhythmia information in conjunction with other clinical findings.
For details about detection performance and test results of the arrhythmia algorithm testing, please refer to “User’s Reference Manual: ECG.”
Alarm Criteria
Asystole
Cardiac arrest, no QRS complexes for five seconds
Bradycardia HR below the HR alarm limit
Frequent PVCs PVCs per minute above the alarm limit
Missing Beat Actual RR rate interval more than 1.8 times the average RR interval
Multif. PVCs Over the last 15 beats two or more premature ventricular beats with different morphologies are detected
R on T PVC Early PVC, beat detected as a PVC and previous beat as not a PVC; current RR interval is less than half of the previous
RR interval
Tachycardia HR over the HR alarm limit
Ventricular bigeminy The following pattern is detected: N, V, N, V, N, V where N = normal, V = PVC (every other beat is a PVC)
Ventricular couplet Two consecutive ventricular beats, preceded and followed by a normal beat
Ventricular fibrillation Fibrillatory waveform caused by ventricular fibrillation
Ventricular run Three or more consecutive PVCs and rate of successive beats over 120 bpm
Ventricular tachycardia Six or more consecutive PVCs and rate of successive beats over 120 bpm
Ventricular trigeminy The following pattern is detected: N, N, V, N, N, V, N, N, V where N = normal, V = PVC (i.e., every third beat is a PVC)