RESUMO
We describe the case histories of five women who developed a severe ulcerating and constricting condition of the vagina following hysterectomy. Three of these women had other classic ulcerative conditions of skin, mouth or colon. One of these women has been described previously.
Assuntos
Histerectomia/efeitos adversos , Complicações Pós-Operatórias/etiologia , Úlcera/etiologia , Vagina/patologia , Doenças Vaginais/etiologia , Adulto , Doença Crônica , Dispareunia/etiologia , Feminino , Humanos , Complicações Pós-Operatórias/tratamento farmacológico , Complicações Pós-Operatórias/fisiopatologia , Síndrome , Resultado do Tratamento , Úlcera/tratamento farmacológico , Úlcera/fisiopatologia , Doenças Vaginais/tratamento farmacológico , Doenças Vaginais/fisiopatologiaRESUMO
OBJECTIVE: To determine whether pulse oximetry has the potential to replace scalp blood pH sampling in infants with abnormal cardiotocographs. STUDY DESIGN: The average scalp oximetry reading in labor recorded with an experimental N400 system was compared with fetal scalp blood pH. RESULTS: The average oximetry readings were unrelated to the pH of aerobically sampled fetal scalp blood. There was no subgroup of acidemic infants with a low oximetry reading. CONCLUSION: Pulse oximetry readings with present technology do not reflect scalp pH. The equipment is improving, but at this time pulse oximetry is not a simple alternative for scalp capillary blood sampling.
Assuntos
Gasometria/normas , Monitorização Fetal/métodos , Oximetria/normas , Couro Cabeludo/irrigação sanguínea , Monitorização Fetal/instrumentação , Humanos , Concentração de Íons de Hidrogênio , Oximetria/instrumentação , Reprodutibilidade dos TestesRESUMO
Experimental pulse oximetry devices, similar to the existing systems used in adult and neonatal monitoring, can be used on the fetus to provide safe, and rapid information about oxygenation. They have been calibrated using fetal lambs and validated in human cross-sectional studies. Experiments have shown that fetal oxygen saturation decreases during normal labour, and drops after a uterine contraction especially with oxytocin-induced tachysystole. When the mother is given oxygen the fetal oxygen saturation increases. Readings are effected by caput and movement, and trends seem to be more meaningful than absolute values. Pulse oximetry can predict fetal outcome and a normal oxygen saturation result is specific for a good outcome perhaps even if the CTG is abnormal. However the technique is still experimental and there is insufficient data to support its use as a replacement for fetal blood sampling or a discriminator for an abnormal fetal heart trace.
