Efficacy of Ultrasound-guided Contrast Enema on Meconium Plug Syndrome in Preterm Infants / 대한주산의학회잡지

PURPOSE: This study aims to compare the effectiveness and safety of ultrasound-guided contrast enema comparing with exploratory laparotomy for meconium plug syndrome in preterm infants. METHODS: Fifty-three preterm infants who were diagnosed with meconium plug syndrome among the neonates admitted to the Neonatal Intensive Care Unit of the Seoul National University Bundang Hospital from March 2008 to August 2015 were analyzed retrospectively. Four-teen infants among the 53 infants were excluded and Thirty-nine infants were analyzed. That time were divided into Period I and Period II. There was no pediatric radiologist and we couldn't try contrast enema in Period I. Pediatric radiologist was appointed and ultrasound guided contrast enema has been available in Period II. RESULTS: There were no specific differences of demographic characters between both Periods. Invasive procedure including contrast enema was increased in Period II than Period I (81% vs. 42%; P<0.05) and there were more exploratory laparotomy in Period I than in Period II (42% vs. 7%; P<0.05). Complications after treatment of meconium plug syndrome were more frequent in exploratory laparotomy groups than in ultrasound-guided contrast enema (57% vs. 0%; P<0.05) and total parenteral nutrition days were longer in laparotomy groups than in contrast enema groups (61±30 days vs. 31±13 days; P<0.05). CONCLUSION: We suggest that ultrasound-guided contrast enema with hyperosmolar water-soluble contrast is more therapeutic and safe therapy than exploratory laparotomy for meconium plug syndrome.

Efficacy of Ultrasound-guided Contrast Enema on Meconium Plug Syndrome in Preterm Infants / 대한주산의학회잡지

PURPOSE: This study aims to compare the effectiveness and safety of ultrasound-guided contrast enema comparing with exploratory laparotomy for meconium plug syndrome in preterm infants. METHODS: Fifty-three preterm infants who were diagnosed with meconium plug syndrome among the neonates admitted to the Neonatal Intensive Care Unit of the Seoul National University Bundang Hospital from March 2008 to August 2015 were analyzed retrospectively. Four-teen infants among the 53 infants were excluded and Thirty-nine infants were analyzed. That time were divided into Period I and Period II. There was no pediatric radiologist and we couldn't try contrast enema in Period I. Pediatric radiologist was appointed and ultrasound guided contrast enema has been available in Period II. RESULTS: There were no specific differences of demographic characters between both Periods. Invasive procedure including contrast enema was increased in Period II than Period I (81% vs. 42%; P<0.05) and there were more exploratory laparotomy in Period I than in Period II (42% vs. 7%; P<0.05). Complications after treatment of meconium plug syndrome were more frequent in exploratory laparotomy groups than in ultrasound-guided contrast enema (57% vs. 0%; P<0.05) and total parenteral nutrition days were longer in laparotomy groups than in contrast enema groups (61±30 days vs. 31±13 days; P<0.05). CONCLUSION: We suggest that ultrasound-guided contrast enema with hyperosmolar water-soluble contrast is more therapeutic and safe therapy than exploratory laparotomy for meconium plug syndrome.

Comparison of Enteral Feeding in Early Neonatal Period in Very Low Birthweight Infants with Hypothyroidism / 대한주산의학회잡지

PURPOSE: We investigated the effects of hypothyroidism on feeding advancement in very low birth weight infants (VLBW). METHODS: This study was a retrospective case-control study of 14 very low birth weight infants (VLBWIs) diagnosed with hypothyroidism and other 14 infants were recruited as age- and weight-matched controls without hypothyroidism or hypothyroxinemia in Seoul National University Children's Hospital between January 2007 and August 2009. We examined whether these infants gained weight more, achieved full-volume enteral feedings sooner, had fewer episodes of increased pre-gavage residuals, and had fewer days of parenteral nutrition. RESULTS: Until full enteral feeding (120 mL/kg/day) was not statistically significant between the groups. In the hypothyroidism group, during the first 14 days after birth, the volume of feeding was smaller [14.7 (0.5-84.0) mL/kg/day, P=0.041], the episodes of increased pre-gavage residuals were frequently observed [16.7 (0.2-78) times, P=0.036], and the duration of central line was significantly longer [18 (10-50) days, P=0.018]. In hypothyroidism group, mean day at first L-thyroxine supplementation was 24.2+/-10.2 days after birth. L-thyroxine administration boosted thyroid function for hypothyroidism infants, helped them tolerate a larger amount of enteral feeding [from 89.5 (2.9-160.8) to 146.9 (31.8-178.8) mL/kg/day, P=0.002] and decreased episodes of excessive gastric residuals [from 5.5 (0-41.6) to 0 (0-44) time, P=0.026]. However, no more weight gain was statistically found. CONCLUSION: In VLBW infants, hypothyroidism may induce feeding intolerance. L-thyroxine supplementation was effective in feeding advancement on preterm infants with hypothyroidism.

Timing of Liberation from Ventilation Assistance and Decannulation in Preterm Infants with Bronchopulmonary Dysplasia after Tracheostomy

PURPOSE: We aimed to evaluate the clinical outcomes of preterm infants with bronchopulmonary dysplasia after tracheostomy. METHODS: We retrospectively examined 24 preterm infants with bronchopulmonary dysplasia who were admitted to the neonatal intensive care unit of Seoul National University Hospital and treated with tracheostomy between January 1999 and December 2013. We collected data on the age at tracheostomy, indication for the tracheostomy, and the long-term outcomes. RESULTS: Of the admitted patients, 1.0% were treated with tracheostomy, and the median age at tracheostomy was 185 days. Fifteen patients (62.5%) were weaned from mechanical ventilation. Of these, 56.5% patients were weaned from positive pressure ventilation (PPV) within 24 months, and 81.3% were weaned from PPV within 60 months. The median time from the tracheostomy procedure to independent PPV was 15.9 months. Decannulation was achieved in 8 patients (33.3%); of these, 41.5% were decannulated within 24 months, and 69.9% were decannulated within 60 months. The median time from the tracheostomy procedure to decannulation was 48.8 months. In patients without airway disease, the time from the tracheostomy procedure to independent PPV and decannulation was 15.6 months. In patients with airway disease, the time from the tracheostomy procedure to independent PPV and decannulation was found to be extended. However, the presence of airway disease was not significantly associated with the duration of mechanical ventilation, or with the time to decannulation. The 5-year survival rate was 80.2%; the patients who did not survive died within 12 months of the tracheostomy procedure. CONCLUSION: Infants with moderate or severe bronchopulmonary dysplasia occasionally require tracheostomy tube placement for mechanical ventilation. In cases with airway disease, the time from the tracheostomy procedure to independent PPV and decannulation tended to be increased, although this increase was not significant.

Comparison of Outcomes According to the Hospitals of Antenatal Care in Very Low Birth Weight Infants

PURPOSE: The purpose of this study was to evaluate the differences according to the hospitals of antenatal care in premature infants. METHODS: We retrospectively reviewed the medical records of premature infants with gestational ages <37 weeks and very low birth weights who were admitted immediately after birth to the neonatal intensive care unit (NICU) at the Dongguk University Ilsan Hospital between March 2007 and February 2009. The hospitals of antenatal care were divided into two levels (primary antenatal care hospital: hospitals with less than a level 2 NICU, secondary antenatal care hospital: hospitals with a level 3 NICU) based on the level of NICU in hospitals. In addition, total infants were divided into two groups (Immediate group: infants born within 24 hours of maternal admission, Delayed group: infants born after 24 hours of maternal admission). The differences between maternal and neonatal variables in each groups were studied. RESULTS: Neonates in secondary antenatal care hospitals comprised 11.0% of the study neonates (10 of 91). We compared with two groups (primary antenatal care hospital and secondary antenatal care hospital), but there were no differences in all subjects. However, the 1 minute Apgar score (< or =3) was lower in the immediate group than the delayed group. CONCLUSION: Shorter duration of maternal admission to delivery was associated with a lower 1 minute Apgar score of neonates. These findings suggest that if maintenance of pregnancy is difficult when high-risk gravidas are transferred, clinicians must prepare for emergencies of neonates.

Analysis of Prenatal and Postnatal Factors Associated with Complications and Prognosis in Premature Infants with Leukemoid Reaction

PURPOSE: This study determined the prenatal and postnatal factors associated with complications and prognosis in premature infants with leukemoid reaction. METHODS: We retrospectively reviewed the medical records of premature infants with gestational ages 30,000/mm3. The infants who had leukemoid reaction comprised the study group, while the remainder of infants made up the control group. The relationships between maternal and neonatal variables and ANC were studied. RESULTS: Leukemoid reaction was detected in 3.1% of the study infants (8 of 252). Factors more frequently associated with infants with leukemoid reaction were as follows: maternal chorioamnionitis, high levels of maternal and infant C-reactive protein, gestational age <37 weeks, birth weight <2,500 g, low Apgar score, prolonged ventilator support, and a high incidence of bronchopulmonary dysplasia (BPD). However, there were no significant differences with respect to the antenatal usage of steroids, the incidences of patent ductus arteriosus, necrotizing enterocolitis, intraventricular hemorrhage, retinopathy of prematurity, and mortality between the two groups. CONCLUSION: Leukemoid reaction in premature infants was associated with chorioamnionitis and high levels of serum C-reactive protein in mothers and infants, and BPD in infants. These findings suggest that leukemoid reaction is secondary to inflammation caused by infection.