Indirect Blood Pressure (NIBP)
Non-Invasive Blood Pressure (NIBP) is widely used for routine BP measurement in awake or anesthetized animals. The basic technique is straightforward: a cuff placed at the base of the tail is inflated to occlude blood flow, then the cuff is slowly deflated while monitoring for the return of pulsatile flow. The cuff pressure at the time of the first appearance of pulses indicates systolic BP.
What separates the various available NIBP systems is the method of pulse detection and measurement. Rats and other rodents control blood flow to the tail as a means of thermoregulation. When the ambient temperature exceeds approximately 28-30oC
The system shown below is for a single animal. Multi-animal systems are also available, with automatic switching between animals.
Standard NIBP components and accessories:
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