International journal of obstetric anesthesia
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Int J Obstet Anesth · Apr 1999
Cell salvage in obstetrics: an evaluation of the ability of cell salvage combined with leucocyte depletion filtration to remove amniotic fluid from operative blood loss at caesarean section.
During 27 elective caesarean sections, operative blood loss was collected and processed using the Haemonetics Cell Saver 5 and filtered by Pall RC 100 leucocyte depletion filtration. The efficiency of removal of amniotic fluid, and the degree. of contamination with fetal red cells were assessed in the resulting 'cleaned' blood. Cell saver processing effectively removed alpha-fetoprotein from the red cells of 14 patients whose amniotic fluid was removed by separate suction and from nine of the 13 patients whose amniotic fluid was aspirated into the cell saver along with operative blood loss. ⋯ Had this been re-transfused into a rhesus-incompatible mother it would have required 2500 i.u. (500 microg) anti-D immunoglobulin to prevent rhesus-immunization of the mother. Contamination of processed caesarean section blood with fetal red cells and fetal squames is defined and its clinical implications discussed, with an overview of the development and current status of cell salvage. Autotransfusion by cell salvage with leucocyte depletion filtration should be considered in life-threatening obstetric haemorrhage and offered to Jehovah's Witnesses.
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Int J Obstet Anesth · Apr 1999
Awake fibreoptic intubation, airway compression and lung collapse in a parturient: anaesthetic and intensive care management.
A 28-year-old primigravida at 35 weeks gestation with acute onset of dyspnoea and stridor due to an intrathoracic neoplasm required semi-urgent caesarean section to allow diagnosis and treatment. Her inability to lie supine precluded regional anaesthesia. She underwent awake fibreoptic oral intubation followed by general anaesthesia. This was complicated by desaturation, high airway pressures, unilateral lung collapse, venous congestion and unexpected blood loss due to an undiagnosed placenta praevia.
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Int J Obstet Anesth · Apr 1999
Post partum creatine phosphokinase and its muscle-brain isoenzyme elevation and transient Q-wave in a patient with idiopathic hypertrophic subaortic stenosis.
A primigravida with idiopathic hypertrophic subaortic stenosis, New York Heart Association Classification III, developed acute chest pain with significant ST segment depression together with a new Q-wave in chest lead V6 on the electrocardiograph following delivery under lumbar epidural analgesia. An intrapartum myocardial infarct was suspected because serial creatine phosphokinase and its muscle-brain isoenzyme levels were elevated in the postpartum period. ⋯ Consequently, the elevations of creatine phosphokinase and its muscle-brain fraction alone are not diagnostic of myocardial infarction in the postpartum period. The diagnosis of myocardial infarction must be based on the clinical picture, serial electrocardiogram recording and determination of lactate dehydrogenase and aspartate amino transferase.
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Int J Obstet Anesth · Apr 1999
Necrotising fasciitis and group A streptococcus toxic shock-like syndrome in pregnancy: treatment with plasmapheresis and immunoglobulin.
A 30-year-old woman at 25 weeks gestation presented to the labour ward complaining of abdominal pain and a painful bruise in her right groin. Over the course of several hours, she developed rapidly spreading necrotising fasciitis of the right thigh. She required emergency radical debridement of the thigh and caesarean delivery of a dead fetus. ⋯ Despite the development of acute renal failure, acute respiratory distress syndrome and a left hemiplegia, the patient made a remarkable recovery. She was later transferred to a plastic surgical unit for split skin-grafting. The importance of early diagnosis and aggressive treatment of GAS TS-LS is emphasized and the place of plasmapheresis and intravenous immunoglobulin therapy in this condition is discussed.