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Main Article Content
Accuracy of blood loss estimation at caesarean delivery
Abstract
Objective: Inaccurate estimation of blood loss during caesarean delivery may be associated with inappropriate decisions in transfusing patients and this may lead to increased maternal morbidity. The study aimed at comparing the accuracy of blood loss estimation by obstetricians and anaesthetists at caesarean delivery.
Methods: This was a cross-sectional retrospective study of 153 women who had caesarean delivery. The anaesthetists and obstetricians involved in the deliveries independently estimated blood loss. The preoperative and 48-hour postoperative haemoglobin concentration values were used to calculate the actual blood loss. The difference in mean blood loss estimates between anaesthetist and obstetricians, and the calculated blood loss was assessed using paired sample t-test. P-value less than 0.05 was deemed statistically significant.
Results: Blood loss estimates by anaesthetists and obstetricians were inaccurate in 78.4% and 80.4% of cases respectively. There was statistically significant difference between blood loss estimates by obstetricians when compared to calculated blood loss (t-test = -2.578; p = 0.011). However, there was no statistically significant difference between blood loss estimates by anaesthetists when compared to calculated blood loss (t-test = -1.665; p = 0.098).
Conclusion: Visual estimation of blood loss at time of caesarean delivery is commonly inaccurate especially at extremes of blood loss. Intra-operative blood loss estimates by anaesthetists correlated better with actual blood loss than estimates by obstetricians.
Keywords: Blood loss, estimation, caesarean delivery, haemoglobin concentration
