PMID- 1536582 OWN - NLM STAT- MEDLINE DCOM- 19920323 LR - 20190501 IS - 1468-2044 (Electronic) IS - 0003-9888 (Print) IS - 0003-9888 (Linking) VI - 67 IP - 1 Spec No DP - 1992 Jan TI - Treatment of severe persistent pulmonary hypertension of the newborn with magnesium sulphate. PG - 31-5 AB - Eight of nine newborn infants with severe persistent pulmonary hypertension of the newborn (PPHN), and a predicted mortality of 100%, and one infant with a predicted mortality greater than 94% based on alveolar-arterial oxygen tension difference [A-a)DO2) were treated with magnesium sulphate (MgSO4) as a life saving therapy after they failed to improve with conventional treatment. Magnesium at high serum concentrations decreases pulmonary pressures and is a muscle relaxant and sedative. Diluted MgSO4.7H2O solution (200 mg/kg) was given intravenously over 20-30 minutes. No changes in the treatment were made after MgSO4. Mean serum magnesium concentration was maintained between 2.88 and 5.67 mmol/l by continuous intravenous infusion (six infants). Baseline arterial oxygen tension (PaO2) and haemoglobin oxygen saturation had mean (SD) values of 4.66 (1.8) kPa and 60.4 (29.7)% respectively, which started to increase one hour after MgSO4 infusion, and increased significantly at six hours to 12.04 (7.07) kPa and 91.8 (10.88)% respectively. Arterial carbon dioxide tension (PaCO2) decreased and pH increased significantly after one hour compared with the baseline value. PaO2 increases are probably secondary to a decrease in pulmonary vascular resistance and pressure, decrease in a right to left shunt, better ventilation:perfusion ratio, and PaCO2 decrease and pH rise. Seven infants survived (77.8%). These results demonstrate the beneficial effect of magnesium in the management of PPHN when other accepted treatment fails, is contraindicated, or not available. FAU - Abu-Osba, Y K AU - Abu-Osba YK AD - Paediatric Department, King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia. FAU - Galal, O AU - Galal O FAU - Manasra, K AU - Manasra K FAU - Rejjal, A AU - Rejjal A LA - eng PT - Journal Article PL - England TA - Arch Dis Child JT - Archives of disease in childhood JID - 0372434 RN - 7487-88-9 (Magnesium Sulfate) RN - I38ZP9992A (Magnesium) RN - S88TT14065 (Oxygen) SB - IM MH - Humans MH - Hydrogen-Ion Concentration MH - Infant, Newborn MH - Infant, Premature MH - Magnesium/blood MH - Magnesium Sulfate/*therapeutic use MH - Oxygen/blood MH - Persistent Fetal Circulation Syndrome/blood/*drug therapy PMC - PMC1590342 EDAT- 1992/01/01 00:00 MHDA- 1992/01/01 00:01 PMCR- 1992/01/01 CRDT- 1992/01/01 00:00 PHST- 1992/01/01 00:00 [pubmed] PHST- 1992/01/01 00:01 [medline] PHST- 1992/01/01 00:00 [entrez] PHST- 1992/01/01 00:00 [pmc-release] AID - 10.1136/adc.67.1_spec_no.31 [doi] PST - ppublish SO - Arch Dis Child. 1992 Jan;67(1 Spec No):31-5. doi: 10.1136/adc.67.1_spec_no.31.