A 0.5 litre blood loss in 30 minutes will lead to: (A) Increase in HR, decrease in BP, (B) Slight increase in HR, normal BP, (C) Decrease in HR and BP, (D) Prominent increase in HR
Answer is B. B i.e. Slight increase in H.R, normal BPBlood loss of upto 20% of blood volume are normally tolerated by redistribution of blood flow, mediated by vasospasmQ.500m1 blood accounts for about 10% of total blood volume (5 litres)Blood loss<15%15-30%Q30-40%>40%BPNo changeNo changeReducedMarkedly reducedHea rateSlight Increase100-120 (slight)>120, weak>120, threadyRespiratory rateNormalIncreased>2020-30