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BACKGROUND An objective definition of bronchopulmonary dysplasia (BPD) is required to interpret trial outcomes and provide a baseline for prognostic studies. Current definitions do not quantify disease severity. The cardinal measures of impaired gas exchange are a reduced ventilation:perfusion ratio (V(A):Q) and increased right to left shunt. These can be(More)
BACKGROUND Oxygen saturation (Spo(2)) monitors are commonly used to determine the need for supplemental oxygen. We aimed to describe the range of arterial oxygen tensions (Pao(2)) observed in preterm infants at saturation levels targeted in current trials. METHODS In a cohort of 98 consecutive infants born at <29 weeks' gestation, the Pao(2) from each(More)
AIM To describe how the stability of oxygen saturation measured by pulse oximetry (SpO2%) varies within and between infants with bronchopulmonary dysplasia (BPD). METHODS Clinically stable infants with BPD had SpO2 measured at different inspired oxygen concentrations (FIO2 expressed as %). A computer model of gas exchange, that is, ventilation/perfusion(More)
INTRODUCTION Hyperoxia and variable oxygenation are associated with morbidity in preterm infants. The optimal range of oxygen tensions is not known. This study aimed to determine whether care based on transcutaneous oxygen tension (TcPO2) or saturation (SpO2) monitoring is associated with less time spent with high oxygen tension and less variability of(More)
Directly compressible co-processed sustained release multifunction agent [DCCSRA] comprising povidone and glyceryl behenate in the ratio of 1:1, 1:2 and 1:3 were prepared and evaluated for formulation of sustained release tablets of isosorbide mononitrate. The DCCSRA exhibited good flow and compressibility. The DCCSRA, prepared by hot melting method and(More)
BACKGROUND Right to left shunt and regional hypoventilation (reduced ventilation/perfusion ratio (V(A)/Q)) have different effects on the curve relating inspired oxygen (P(I)O(2)) to oxygen saturation measured by pulse oximetry (SpO(2)) and can be derived non-invasively from measurements of SpO(2) and inspired oxygen pressure (P(I)O(2)) using complex models(More)
The present study was designed to evaluate the cardioprotective effects of methanolic extract of Litsea deccanensis (MELD) against isoproterenol-induced myocardial infarction in rats by studying cardiac markers, lipid peroxidation, lipid profile, and histological changes. Male Wistar rats were treated orally with MELD (100 and 200 mg/kg) daily for a period(More)
Low admission temperature is an independent risk factor for morbidity and mortality in preterm infants. 1 Thermal stability is enhanced by use of polythene bags during stabilisation, 2 but it has been suggested that this may induce potentially harmful hyper-thermia. 3 We have measured the changes in body temperature during the first 15 minutes after birth(More)
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