Pressure sores usually occur when external pressure exceeds capillary occlusive pressure over
When external pressure exceeds the capillary occlusive pressure over 30mmHg, blood flow to skin ceases leading to tissue anoxia, necrosis and ulceration. Ref: Bailey and love 27th edition Pg no: 29
20 mmHg
25 mmHg
30 mmHg
35 mmHg
General anatomy