Medtronic
RR- Accelerometer
Accessed from parameters; modes/rates
•Rate profile Optimization: on/off
(allows you to optimise rate response settings)
•Lower Rate: e.g., 60 ppm
•ADL Rate (activities of daily living rate- moderate exercise rate): e.g., 95-115 ppm
•Upper Sensor Rate: 100% max predicted HR = 220- age x 0.85-0.9
•ADL Response: 1-5 (1= inactive lifestyle; 5= very active) (3)
•Exertion Response: 1-5 (1= inactive lifestyle; 5= very active) (3)
•Activity Threshold: low, medium/low, medium, medium/high, high
•Activity Acceleration: 15, 30, 60 seconds (time taken to respond)
•Activity Deceleration: exercise, 2.5, 5, 10 min (exercise: deceleration time depends on duration and intensity of exercise)
RR- AV delay
Accessed from parameters; intrinsic activation; AV therapies and AV intervals
•Rate adaptive AV delay on off
•Start Rate (bpm) 50, 55, 60, 65, 70, 75, 80, …175
•Stop rate 55, 60, 65, …120, …180 bpm
•Maximum Offset -10, -20, -30, -40, …-300 ms
•Max offset = how short the
AV delay can go (e.g., PAV delay of 150ms won’t go shorted than 110ms with a max offset of -40ms.
RR- PVARP
Accessed from parameters; refractory/blanking
•PVARP (auto) auto, 250ms, etc
•minimum PVARP (nominal-250ms) (only when PVARP auto)
•Works by attempting to keep the 2:1 block rate >30 bpm above the mean atrial rate.
•Auto PVARP allows 1:1 tracking
of atrial events up to 30 bpm
above the heart rate or 100
bpm, whichever is greater
