Venesection in cyanotic heart disease

Venesection in cyanotic heart disease – calculation of volume to be removed
Venesection in cyanotic heart disease is done only in symptomatic polycythemia with hemoglobin > 20 gm% and hematocrit > 65 %. Blood removed has to be replaced with equal amount of saline to avoid hypovolemia and reduce the hematocrit.
Volume of blood to be removed by venesection in ml:
[(Observed PCV – Desired PCV ) / Observed PCV] x 70 x body weight in Kg.
Desired PCV (packed cell volume or hematocrit) is calculated based on the oxygen saturation. Average desired PCV is about 60 for a person with cyanotic congenital heart disease (CCHD).
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Source: Cardiophile MD - August 4, 2014 Category: Cardiology Authors: Prof. Dr. Johnson Francis MD, DM, FACC, FRCP Edin, FRCP London Tags: General Cardiology calculation of volume of venesection desired PCV desired PCV in CCHD Venesection in cyanotic heart disease Source Type: blogs