Pacemaker Learning Package
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| Eg. Threshold is 3 V
3 x 2 = 6 Add one (for safety margin) 6 + 1 = 7Therefore you set the output at 7 V. Liverpool Hospital Intensive Care: Learning Packages Intensive Care Unit Pacemaker Learning Package LH_ICU2016_Learning_Package_Pacemaker_Learning_Package 36 | P a g e SENSITIVITY THRESHOLDS The sensitivity threshold is the maximum sensitivity at which the pacemaker can sense intrinsic events. The minimum atrial or ventricular intra cardiac signal amplitude required to inhibit or trigger a demand pacemaker, expressed in millivolts To find threshold: *NB if patient has no intrinsic rate with an adequate output this test cannot be performed. Reduce the pacemaker rate to just below the patient’s intrinsic rate. Obtain a rhythm strip. Decrease the output setting to the lowest number possible, thereby avoiding potentially dangerous competition between the pacemaker and the patient’s intrinsic heart rate. Decrease the pacemaker’s sensitivity (i.e. number) Observe the pacemaker for the sensing light to stop flashing. You then the number on the pacemaker box until the sensing light just start to flash. This is called the sensitivity threshold. You then set the sensitivity on the pacemaker at half the sensitivity threshold and minus one, as a safety margin. Eg. Sensitivity 6mV 6 2 = 3 Minus one (for safety margin) 3 – 1 = 2 Liverpool Hospital Intensive Care: Learning Packages Intensive Care Unit tải về 1.43 Mb. Chia sẻ với bạn bè của bạn:
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