الفهرس 
Formation and secretion of fetal lung fluidOnly 14 pages are availabe for public view
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Abstract
This study was carried out Ain Shams university hospital throughout the period between January2009 and May 2009 to detect if the duration of fetal extraction during cesarean section from the initiation of anesthesia until extraction of fetus increases incidence of Transient Tachypnea of the Newborn or not .
This study involved 200 pregnant women with uncomplicated pregnancy; the gestational age was ranged between 38 and 41 week.
The selected patients were 150 with history of previous cesarean section and 50 patients were primary cesarean section.
The duration of fetal extraction during cesarean section was measured from the initiation of anesthesia until extraction of fetus.
Apgar score at 1 minute and 5 minute, respiratory rate at birth and weight of neonate were calculated .Incidence of Transient Tachypnea among the studied neonates was calculated.
Transient Tachypnea of the Newborn was diagnosed by clinical presentation, radiological data and exclusion of other causes of respiratory distress which was done by neonatology physicians.
Results showed that the mean of Apgar score after 1 minute was (6.55±0.619) and 5 minute (8.57±0. 572), respiratory rate (49.75±8.728) and weight (3.09 ± 0. 463) in previous cesarean section cases.
In primary cesarean section cases Apgar score was (6.54 ± 0.734) after 1 minute, (8.50 ± 0. 678) after 5 minute, respiratory rate (48.40 ± 9. 247) and weight (3.10 ± 0.614).
Incidence of TTN was 7.3℅ (11 cases) in previous cesarean section patients, and the mean of duration of fetal extraction in these cases was (34 minutes and 10 seconds).
The incidence of TTN in primary cesarean section patients was 10 ℅ (5 cases); the mean of duration of fetal extraction was (22minutes and 10 seconds).
The statistical analysis of the data showed that there is no significant difference between duration of fetal extraction during cesarean section and incidence of TTN, while there was a significant correlation between neonatal respiratory rate and the increase in duration of fetal extraction during cesarean section irrespective of being primary or previous cesarean section; longer extraction period leads to neonatal tachypnea.