Pulmonary hypertension in preterm infants: results of a prospective screening program.

OBJECTIVE: Determine prevalence and associations with pulmonary hypertension (PH) in preterm infants. STUDY DESIGN: Prospective institutional echocardiographic PH screening at 36 to 38 weeks' corrected gestational age (GA) for infants born <32 weeks' GA who had bronchopulmonary dysplasia (BPD; group BPD), and infants without BPD who had a birth weight (BW) <750 g, or clinical suspicion for PH (group NoBPD). RESULTS: Two hundred and four infants were screened (GA 25.9±2 weeks, BW 831±286 g). The PH prevalence in group BPD was higher than in group NoBPD (44/159 (28%) vs 5/45 (11%); P=0.028). In group BPD, BW and GA were lower in infants with PH compared with NoPH. Following correction for BW and GA, necrotizing enterocolitis (NEC), severe intraventricular hemorrhage (IVH), atrial septal defect (ASD), and mortality were independently associated with PH in infants with BPD. In group NoBPD, NEC was the only identified factor associated with PH. Altogether, screening only those infants with NEC and infants with BPD who also had a BW <840 g would have yielded a 84% sensitivity for detecting PH, and reduced the number of screening echocardiograms by 43%. CONCLUSIONS: PH in prematurity is associated with NEC in infants with and without BPD. In infants with BPD, smaller GA and BW, severe IVH, ASD and mortality are also associated with PH. Infants without identified PH-associated factors may not require routine echocardiographic PH screening.

Enteric absorption of ciprofloxacin during tube feeding in the critically ill.

To determine the pharmacokinetic properties of ciprofloxacin in the critically ill, we studied seven mechanically ventilated patients with pneumonia during enteral feedings. Subjects received ciprofloxacin 750 mg every 12 h via nasogastric tube and serial serum drug concentrations were measured after the first and fourth dose. After the initial dose, the maximum serum concentration ranged from 1.24-3.06 mg/L, and the area under the time curve from 0-12 h ranged from 3.2-19.65 mg.h/L. Similar levels were noted after dose four. Gastrointestinal absorption of ciprofloxacin in tube fed critically ill patients was decreased, but well above MIC values for many pathogenic bacteria.

Esmarch closure of laparotomy incisions in unstable trauma patients.

Fascial closure after laparotomy may be time-consuming and extremely difficult, especially in the setting of massive bowel edema. In the trauma patient with deteriorating hemodynamic status, hypothermia, or worsening hypoxia, expeditious abdominal wall closure is essential to facilitate rapid transport to the intensive care unit for further stabilization. With the increasing utilization of the abbreviated laparotomy in unstable trauma patients, innovative techniques for speedy fascial closure must be evaluated. We developed the Esmarch closure--a simple, rapid method for closing the abdominal wall at the end of abbreviated laparotomies.