More than a PINT?

[IggyB]

how much blood could i lose before i was in big trouble ... of dying!

[gazzawazza]

10% loss, normal

20% may cause dizzy spells when standing, pale skin, pulse and breathing slightly raised

30% levels of consciousness lowered, displaying feelings of restlessness and anxiety, cyanosis (blueness of lips and skin) also cold and clammy to the touch, pulse over 100 bpm and hard to detect, breathing rapid

40% Unresponsive (unconscious), severe cyanosis with cold clammy skin, undetectable pulse, breathing deep sighing (air hunger).

Blood loss of 30% is considered critical and anyone losing over 10% should be treated for shock.

As a rule of thumb we have one pint of blood for every stone in body weight. I weigh 11 stone, so for myself, losing 3 pints is approaching critical.

All figures come from my First Aid Manual.

[craig_edward]

the body can cope pretty well with losing about 500mls...