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Biomedical subjects

R D Garrison

Publications and source records attributed to R D Garrison.

13 recordsLinked to original sources
PubMed2006

Early neonatal hypotension in premature infants born to preeclamptic mothers.

BACKGROUND: Early neonatal hypotension (ENH) is common in premature infants and has been claimed to occur more frequently in infants born to mothers with severe preeclampsia. Previous studies that showed a relationship between maternal preeclampsia and neonatal hypotension did not control for potential confounding factors such as birth weight and maternal treatment with magnesium sulfate (MgSO4). OBJECTIVE: To determine whether maternal preeclampsia is an independent risk factor for ENH. STUDY DESIGN: We conducted a retrospective review of all viable singleton infants with gestational age of 23 to 30 weeks who were admitted to the neonatal intensive care unit over a 2-year period. ENH was defined as the persistence of the mean arterial pressure lower than the gestational age in weeks requiring volume expansion and inotropic support in the first 24 h of life. RESULTS: One hundred and eighty four infants were enrolled. Seventy-five (41%) infants met the diagnostic criteria for ENH. Maternal preeclampsia, the presence of labor, maternal treatment with MgSO4, Apgar scores, birth weight, gestational age and respiratory distress syndrome were significantly associated with ENH by univariate analysis. Only gestational age and maternal preeclampsia were significantly associated with ENH by multiple logistic regression. CONCLUSION: Gestational age and maternal preeclampsia were independent risk factors for ENH in our population of premature infants.

Blood Pressure↗
PubMed1998

Hydrothorax after ventriculoperitoneal shunt placement in a premature infant: an iatrogenic postoperative complication. Case report.

The authors describe the case of a prematurely born infant who developed hydrothorax after ventriculoperitoneal (VP) shunt placement for treatment of posthemorrhagic communicating hydrocephalus. Prior to shunt placement a bout of necrotizing enterocolitis created intense abdominal and peritoneal scarring. The authors postulate that the scarring created poor peritoneal absorption capacity of cerebrospinal fluid (CSF), with preferential flow of CSF from the peritoneal to the pleural cavity. A (99m)Tc-diethylenetriamine pentaacetic acid radionucleotide study enabled the authors to rule out shunt malfunction, and preferential transdiaphragmatic flow of CSF from the abdomen to the thoracic cavity was demonstrated. The hydrothorax resolved after conversion of the VP shunt to a ventriculoatrial shunt. Respiratory distress after VP shunt placement should be considered an unusual but important sentinel symptom in the differential diagnosis of postoperative shunt complications.

Abdomen↗
PubMed1990

Citywide neonatal program. Ten years experience.

A citywide neonatal program initiated in Jacksonville, Florida, in July 1978 through December 1988 had incorporated all six hospitals that provide obstetrical services in the metropolitan area. Admissions, occupancy rate, as well as patient care days served by the Regional Perinatal Intensive Care Center (RPICC) and the Level II nurseries have increased to capacity. More "step-down" care beds are made available by this program which has also proved to be cost effective. Areas of concern are discussed.

Costs and Cost Analysis↗
PubMed1982

Neonatal coronary thrombosis.

We have described a case of coronary thrombosis in a neonate. The diagnosis should be considered in a term infant who presents with a shock-like state with poor perfusion soon after birth. The chest roentgenogram may vary from a normal pattern to generalized cardiomegaly with pulmonary congestion. The electrocardiogram may show a pattern varying from severe right ventricular hypertrophy to anterior left myocardial injury. Prognosis is usually poor, and the infant may die within 24 hours after delivery. The etiology of the thrombus formation remains obscure.

Coronary Disease↗
PubMedDate not supplied

Two FMRFamide-like peptides from the free-living nematode Panagrellus redivivus.

Peptides of the FXRFamide family, where X = M, I or L, are broadly distributed among invertebrates. Two such peptides were purified and sequenced from the free-living nematode, Panagrellus redivivus. Immunohistochemical techniques localized FMRFamide-like material in several regions of these organisms, including the nerve cords and, most prominently, in paired groups of cells located caudally to the base of the pharynx. RIA determinations gave an estimate of 2.8 nmol immunoreactive peptide/g of an acetone extract of P. redivivus. Four sequential HPLC purification steps, followed by sequencing by automated Edman degradation and FAB-MS, led to the identification of Ser-Asp-Pro-Asn-Phe-Leu-Arg-Phe-amide (SDPNFLRFamide) and Ser-Ala-Asp-Pro-Asn-Phe-Leu-Arg-Phe-amide (SADPNFLRFamide) as members of the FXRFamide family in this nematode.

Amino Acid Sequence↗