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Query: UMLS:C0029713 (immaturity)
 4,335 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Perinatal deaths were systematically investigated over a 25-month period in a Zimbabwean district and were classified into pathological subgroups according to Wigglesworth. There were 319 perinatal deaths (a rate of 30.6 per 1000) including 83 normally formed macerated stillbirths, 28 cases of congenital malformation, 79 deaths associated with immaturity, 111 due to asphyxial conditions developing in labour and 18 specific problems. Syphilis infection was a contributory factor among 27 cases, hypertension in 39 cases, amniotic fluid infection in 31 cases and diabetes in 11 cases. An avoidable factor was detected among 242 cases (75.6%) involving the mother in 120 cases, the maternity centres in 28 and the hospital in 94. These data suggest that educational programmes should try to convince all the pregnant women to attend an antenatal clinic at least once. A further perinatal mortality reduction might be obtained through treatment for syphilis, hypertension, diabetes and amniotic fluid infection, closer monitoring of the fetal condition during labour and skillful management of dystocia.
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PMID:Perinatal mortality audit in a Zimbabwean district. 278 80

Among the modifications that occur during the neonatal period, pulmonary development is the most critical. The neonate's lungs must be able to perform adequate gas exchange, which was previously accomplished by the placenta. Neonatal respiratory distress syndrome is defined as insufficient surfactant production or pulmonary structural immaturity and is specifically relevant to preterm newborns. Prenatal maternal betamethasone treatment of bitches at 55 days of gestation leads to structural changes in the neonatal lung parenchyma and consequently an improvement in the preterm neonatal respiratory condition, but not to an increase in pulmonary surfactant production. Parturition represents an important challenge to neonatal adaptation, as the uterine and abdominal contractions during labour provoke intermittent hypoxia. Immediately after birth, puppies present venous mixed acidosis (low blood pH and high dioxide carbon saturation) and low but satisfactory Apgar scores. Thus, the combination of physiological hypoxia during birth and the initial effort of filling the pulmonary alveoli with oxygen results in anaerobiosis. As a neonatal adaptation follow-up, the Apgar analysis indicates a tachypnoea response after 1 h of life, which leads to a shift in the blood acid-base status to metabolic acidosis. One hour is sufficient for canine neonates to achieve an ideal Apgar score; however, a haemogasometric imbalance persists. Dystocia promotes a long-lasting bradycardia effect, slows down Apgar score progression and aggravates metabolic acidosis and stress. The latest data reinforce the need to accurately intervene during canine parturition and offer adequate medical treatment to puppies that underwent a pathological labour.
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PMID:Prenatal and neonatal adaptations with a focus on the respiratory system. 2327 93