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INSTALLATION AND OPERATING INSTRUCTIONS
•
When applying a Tourniquet cuff, the valve port and hose connections should be placed so that the hose will not
be kinked when the limb is positioned for surgery:
LIMB OCCLUSION PRESSURE (LOP)
The patient’s Limb Occlusion Pressure (LOP) is the lowest pressure required to stop the fl ow of blood in the extremity.
The
A.T.S.
4000TS has the ability to determine the patient’s limb occlusion pressure based on their physiological
characteristics.
LOP is affected by such factors as:
•
Whether the cuff is to be applied to an upper or lower limb.
•
Whether the limb is normal, hypertrophied, or obese.
•
The patient’s preoperative systolic pressure.
•
The maximum anticipated rise in systolic pressure during the procedure.
The physician may also choose to use an alternative method such as the Doppler stethoscope to manually and
carefully, following the published technique, determine the patient’s LOP, or to confi rm the LOP automatically
determined by the
A.T.S.
4000TS.
RECOMMENDED TOURNIQUET PRESSURE (RTP)
The
A.T.S.
4000TS will take into account anticipated changes in blood pressure during the procedure by adding an
additional pressure margin to the LOP value at the end of the LOP determination. This modifi ed pressure is referred to
as the Recommended Tourniquet Pressure or RTP and is calculated as follows: