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Biomedical subjects

F K Hall

Publications and source records attributed to F K Hall.

9 recordsLinked to original sources
PubMed1998

High-dose phenobarbital therapy in term newborn infants with severe perinatal asphyxia: a randomized, prospective study with three-year follow-up.

OBJECTIVE: To determine whether 40 mg/kg phenobarbital given to term infants with severe asphyxia would result in a lower incidence of seizures in the newborn period and an improved neurologic outcome. METHODS: We conducted a randomized, controlled, prospective study. Entry criteria included (1) an initial arterial pH less than or equal to 7.0 with a base deficit 15 mEq/L or more, (2) Apgar score less than or equal to 3 at 5 minutes of age, or (3) failure to initiate spontaneous respiration by 10 minutes of age. Sample size was calculated to detect a 50% reduction in the incidence of neonatal seizures. RESULTS: No differences were present between treatment and control groups with respect to severity of asphyxia assessed by initial arterial pH, base excess, cerebrospinal fluid lactate dehydrogenase concentration or detection of CSF creatine kinase of its BB isoenzyme. Seizures occurred in 9 of 15 infants in the treatment group and 14 of 16 infants in the control group (p = 0.11). No adverse effects were observed from phenobarbital on heart rate, respiratory rate, blood pressure, or arterial blood gas values. Three-year follow-up revealed normal outcome in 11 of 15 infants in the treatment group and 3 of 16 in the control group (p = 0.003). CONCLUSION: Phenobarbital, when administered in a dose of 40 mg/kg intravenously over 1 hour in term, severely asphyxiated newborn infants appeared to be safe and was associated with a 27% reduction in the incidence of seizures and a significant improvement in neurologic outcome at 3 years of age.

Anticonvulsants↗
PubMed1986

Selective bronchial intubation in infants with lobar emphysema: indications, complications, and long-term outcome.

Thirteen infants underwent selective intubation of a mainstem bronchus (SBI) for lobar emphysema of varying etiologies. Seven infants had pulmonary interstitial emphysema (PIE) with lobar hyperinflation secondary to hyaline membrane disease and mechanical ventilation. Six of these improved with SBI and five maintained permanent resolution upon cessation of SBI. Two infants with localized areas of emphysema who were subsequently shown to have histologic evidence of bronchopulmonary dysplasia had unsuccessful SBI. SBI was also unsuccessful in permanently resolving congenital lobar emphysema although temporary collapse of the affected lobe occurred during SBI. Complications including hypoxia, bradycardia, right upper lobe atelectasis, pneumonia, and additional air leaks occurred during SBI in six cases. Follow-up xenon ventilation scans in four infants in whom SBI was successful revealed normal ventilation of the previously diseased lobes. SBI can be a useful alternative to surgical excision of the affected lobe in patients with localized lobar hyperinflation secondary to PIE. SBI is generally unsuccessful in permanently correcting congenital lobar emphysema, nor should it be used when chronic diffuse parenchymal damage is present.

Bronchi↗
PubMed1984

Postasphyxial lung disease in newborn infants with severe perinatal acidosis.

The pulmonary course and respiratory management of 65 asphyxiated infants with at least one arterial pH less than or equal to 7.00 within the first 2 hours of life was determined. Asphyxia in the preterm and term infants in the absence of respiratory distress syndrome or meconium aspiration syndrome was associated with a transient respiratory insufficiency requiring assisted ventilation which markedly improved in the first 24 hours of life. In contrast, infants with asphyxia complicated by respiratory distress syndrome or meconium aspiration syndrome developed profound lung disease including pulmonary hemorrhage and persistence of the fetal circulation. The course of their illness was significantly worse than control infants without asphyxia. Ineffective neonatal resuscitation allowing for the development of meconium aspiration syndrome and persistent respiratory acidosis contributed to the severity of illness in more than 50% of the infants. Central nervous system pathologic conditions were present in asphyxiated infants with and without severe pulmonary disease. We conclude that severe asphyxia in the absence of underlying lung disease results in a predictable postasphyxial transient respiratory insufficiency, with marked improvement in the first 24 hours of life.

Acidosis↗
PubMed1984

Postnatal diuresis and respiratory distress syndrome in infants receiving mechanical ventilation.

Measurements of body water homeostasis and pulmonary function were obtained in 24 infants with respiratory distress syndrome requiring mechanical ventilation during the first five days of life to determine the relationship of diuresis to improvement in pulmonary function. Initial diuresis (output intake ratio greater than 0.8) occurred at 24 hours, maximum diuresis (output intake ratio greater than or equal to 1.6) at 40 hours, and initial improvement in pulmonary function (fall in AaDO2 greater than 50 mm Hg) at 48 hours. Urine flow rates over four-, eight-, or 12-hour periods were quite variable and correlated poorly with improvement in pulmonary function. Reduction in body weight was a more accurate indicator of total changes in body water than urine output, output intake ratio, or fractional excretion of sodium. Although there was a temporal relationship of loss of body water and improvement in pulmonary function by analysis of means, no cause-and-effect relationship could be found on a case-by-case analysis. Five of 24 infants demonstrated improvement in pulmonary function prior to diuresis or reduction in body weight. Nine infants had a diuresis more than 24 hours prior to pulmonary improvement, and two infants had a diuresis without pulmonary improvement during the five-day study period. These data indicate that factors other than body water are associated with improvement in pulmonary function in infants with respiratory distress syndrome.

Age Factors↗
PubMed1984

Comparison of calcium- and phosphorus-supplemented soy isolate formula with whey-predominant premature formula in very low birth weight infants.

In a random, controlled study of very low birth weight (VLBW) infants from 3 to 8 weeks of age, 17 infants were fed soy isolate formula supplemented with calcium (92 mg/kg/day), phosphorus (44 mg/kg/day), and vitamin D (500 IU/kg/day), and 15 were fed a new whey-predominant, low osmolality formula designed for small preterm infants. Mean birth weight (1,206 g, SD 178) and gestational age (30 weeks, SD 1.9) of the soy-fed group were not significantly different from the whey formula group (1,143 g, SD 158, and 30 weeks, SD 1.8, respectively). Caloric and protein intakes were not different between the formula groups throughout the study period. However, mean weight gain in g/kg/day was significantly greater for the whey formula group: 15.3 g, SD 2.5, vs. 11.3 g, SD 2.3, p less than 0.0001. Serum protein and albumin were higher in the whey formula-fed group during the latter 2 weeks of the study (p less than 0.05). The incidence of vomiting, gastric residual, abdominal distension, diarrhea, and constipation was low and not different between the two groups. No infant developed necrotizing enterocolitis. Serum calcium, phosphorus, alkaline phosphatase, 25-hydroxy vitamin D and parathyroid hormone were similar in both groups, and no infant developed radiographic evidence of rickets. Although soy isolate formula supplemented with calcium, phosphorus, and vitamin D was not associated with rickets, no fewer complications were observed with this lactose-free, low solute formula.(ABSTRACT TRUNCATED AT 250 WORDS)

Blood Proteins↗
PubMed1983

Diagnosis and treatment of right Bochdalek hernia associated with group B streptococcal pneumonia and sepsis in the neonate.

Neonatal sepsis due to group B beta-hemolytic Streptococcus (GBS) is reported to occur in about 1 out of 330 live births. Right-sided Bochdalek hernia (RBH) occurs in about 1 of 20,000 live births. The combination of group B streptococcal sepsis and delayed appearance of a right Bochdalek hernia is an infrequently reported phenomenon--18 patients have been previously reported in the English literature. We add four patients from our own experience to these previous reports. Since approximately 10% to 15% of the newborn population are exposed to group B Streptococcus we suspect that the inadequate diaphragmatic motion on the side of the Bochdalek hernia predisposes the child to development of septicemia and/or pneumonitis. Once the etiology has been established and appropriate antibiotic therapy instituted, progressive improvement in the patient's course should be seen. This is in contrast to a very significant mortality rate in many of the patients having early onset GBS. Any child, therefore, surviving early onset GBS only to deteriorate again, should be suspected of having an associated right Bochdalek hernia, and diagnostic steps should be taken to evaluate the integrity of the right diaphragm.

Female↗
PubMed1982

Septicemia and hernia.

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Hernias, Diaphragmatic, Congenital↗