Mohd Ariff@Ghazali, Nazhan Afeef and Ali, Saedah and Ab Mukmin, Laila
(2021)
Predicting haemoglobin level within 6 hours and after 24 hours after a caesarean section: are there such formulas to calculate them?
Medicine and Health, 16.
p. 9.
E-ISSN 2289-5728
Abstract
Background: We measured Haemoglobin (Hb) levels within 6 hours and after 24 hours in 134 Caesarean Section cases in Hospital Universiti Sains Malaysia in 2017.
Methods: All blood loss from participants were measured gravimetrically and calculated after dry weights from the disposables and collecting bottles are excluded. Hb levels pre-CS followed by Hb within 6 hours and 24 hours post CS were taken.Data were tested by Multiple Linear Regressions where P <0.05 is considered significant.
Results: Percentage blood loss, intraoperative fluid administration and patient previous scars were strong predictors for Delta Hb within 6 hours post CS and with exclusion of previous scar in Delta Hb after 24 hours post CS with P <0.05.Formula for Delta Hb within 6 hours post CS = 0.869 + (-0.055 x Percentage Blood Loss (%)) + (-0.001 x Fluid given intraoperatively (mls) + (0.205 x Previous scars (n))Formula for Delta Hb after 24 hours post CS = 0.631 + (-0.086 x Percentage Blood Loss (%)) + (-0.001 x Fluid given intraoperatively (mls) Confounders excluded are Body Mass Index (BMI), duration of surgery, total blood volume, estimated liquor, balance fluid given intraoperatively and after 24 hours, and parity.
Conclusions: It is possible to estimate blood loss within 6 hours and after 24 hours after CS. The benefits will include maintaining normal Hb level and assessing need for transfusion for post CS.
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