Monday, July 5, 2010

More about yesterday's post - that AJOG article

Which can be read here.Just a short point while I eat dinner. The exclusions for this study:
To identify a low obstetrical risk population, we excluded multiple gestations, preterm deliveries <37 weeks, smokers, women with pregestational or gestational diabetes, chronic hypertension, hypertensive disorders of pregnancy, or prior cesarean. Demographics included maternal age, race, education, and timeliness of registering for prenatal care. Maternal morbidity measures in this low-risk population included chorioamnionitis (clinical diagnosis of chorioamnionitis during labor made by delivery attendant, usually includes 1 of the following: fever, uterine tenderness and/or irritability, leukocytosis, fetal tachycardia, any maternal temperature 38°C [100.4°F]), fetal intolerance of labor (in utero resuscitative measures, eg, any of the following: maternal position change, oxygen administration to the mother, intravenous fluids administered to the mother, amnioinfusion, support of maternal blood pressure, and administration of uterine relaxing agents; further fetal assessment includes any of the following: scalp pH, scalp stimulation, acoustic stimulation; operative delivery is operative intervention to shorten time to delivery of the fetus, eg, forceps, vacuum, or cesarean delivery), prolonged labor (labor that progresses slowly and lasts for >20 hours), precipitous labor (labor that progresses rapidly and lasts for <3 hours), and meconium staining (staining of the amniotic fluid caused by passage of fetal bowel contents during labor and/or at delivery that is more than enough to cause a greenish color change of an otherwise clear fluid). Newborn morbidity included assisted ventilation (infant given manual breaths for any duration with bag and mask or bag and endotracheal tube within the first several minutes from birth, excludes oxygen only and laryngoscopy for aspiration of meconium), assisted ventilation >6 hours (infant given mechanical ventilation [breathing assistance] by any method for <6 hours, includes conventional, high-frequency, and/or continuous positive pressure), birth injury (defined as present immediately following delivery or manifesting soon after delivery, includes any bony fracture or weakness or loss of sensation but excludes fractured clavicles and transient facial nerve palsy; soft tissue hemorrhage requiring evaluation and/or treatment, includes subgaleal [progressive extravasation within the scalp] hemorrhage, giant cephalohematoma, extensive truncal, facial, and/or extremity ecchymosis accompanied by evidence of anemia and/or hypovolemia and/or hypotension; solid organ hemorrhage, includes subcapsular hematoma of the liver, fractures of the spleen, or adrenal hematoma), neonatal intensive care unit (NICU) admission (admission into a facility or unit staffed and equipped to provide continuous mechanical ventilatory support for a newborn), seizures (seizure is any involuntary repetitive, convulsive movement or behavior; serious neurologic dysfunction is severe alteration of alertness, such as obtundation, stupor, or coma, ie, hypoxic-ischemic encephalopathy, excludes lethargy or hypotonia in the absence of other neurologic findings, excludes symptoms associated with central nervous system congenital anomalies), 5-minute Apgar
score <7, and birthweight <2500 g.
 Way to go for reinforcing lots of "risk factors" not supported by research. And why exclude fractured clavicles and transient facial palsy?

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