Acute and chronic pain management during pregnancy, after delivery and even during lactation are challenging even for experienced physicians. This chapter intends to cover pregnancy-induced physiological changes in relation to pain conditions. It also covers the most common pain disorders in pregnancy and provides a comprehensive summary of the pharmacological and non-pharmacological options for pain management in pregnancy. Additionally, pain management in context of opioid abuse will also be covered, as high prevalence of opioid prescription is linked to the very poor maternal and fetal outcomes. The possibility of maternal opioid abuse and fetal opioid withdrawal should be known to all physicians, given its rising trends. Multimodal protocols and opioid sparing strategies are highly essential for safe pain management during pregnancy and have been discussed. This chapter is intended to be a fast and detailed review for residents, pain fellows, and physicians who seek pain control in pregnant women.
Background and Aims:Human plasma protein fraction 5% (PPF5%) is an albumin-based colloid used to expand the plasma volume during volume deficiency. The current basic medical experimental study assessed in vitro coagulation of PPF5% solution and its effects on blood coagulation and chemistry.Methods:The study involved 20 volunteers, and each volunteer donated 20–50 ml of fresh blood. Three dilutions of blood with PPF5% dilutions were prepared (30, 50, and 70%). The fibrinogen dose required to correct coagulation in the 50% diluted samples was assessed (two doses used). The thromboelastogram (TEG) measured the haemostatic parameters (fibrinogen level, initiation of coagulation [R time], kinetics [K], acceleration of coagulation [α angle], maximum amplitude [MA] and coagulation index [CI]), and the ABL gas analyser measured the blood chemistry changes.Results:All dilutions showed significant TEG and blood chemistry changes when compared to controls. The two doses of fibrinogen corrected the clot formation speed with no significant difference in speed between the two doses. Acidosis measured by the strong ion gap (SID) and pH were significant for all dilutions when compared with the baseline. The 30% dilution remained within the lower normal acceptable value while 50% dilution was beyond the critical normal values.Conclusion:In vitro PPF5% to replace blood loss up to 50% dilution did not have significant coagulation and blood chemistry effects while coagulopathy should be expected in extreme dilutions (70%). Fibrinogen in a dose equivalent to 4 gm/70 kg adult improved clot strength at 50% dilution.
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