alexa Randomised trial of high-dose isosorbide dinitrate plus low-dose furosemide versus high-dose furosemide plus low-dose isosorbide dinitrate in severe pulmonary oedema.
Healthcare

Healthcare

Journal of Palliative Care & Medicine

Author(s): Cotter G, Metzkor E, Kaluski E, Faigenberg Z, Miller R,

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Abstract BACKGROUND: Nitrates and furosemide, commonly administered in the treatment of pulmonary oedema, have not been compared in a prospective clinical trial. We compared the efficacy and safety of these drugs in a randomised trial of patients with severe pulmonary oedema and oxygen saturation below 90\%. METHODS: Patients presenting to mobile emergency units with signs of congestive heart failure were treated with oxygen 10 L/min, intravenous furosemide 40 mg, and morphine 3 mg bolus. 110 patients were randomly assigned either to group A, who received isosorbide dinitrate (3 mg bolus administered intravenously every 5 min; n=56) or to group B, who received furosemide (80 mg bolus administered intravenously every 15 min, as well as isosorbide dinitrate 1 mg/h, increased every 10 min by 1 mg/h; n=54). Six patients were withdrawn on the basis of chest radiography results. Treatment was continued until oxygen saturation was above 96\% or mean arterial blood pressure had decreased by 30\% or to below 90 mm Hg. The main endpoints were death, need for mechanical ventilation, and myocardial infarction. The analyses were by intention to treat. FINDINGS: Mechanical ventilation was required in seven (13\%) of 52 group-A patients and 21 (40\%) of 52 group-B patients (p=0.0041). Myocardial infarction occurred in nine (17\%) and 19 (37\%) patients, respectively (p=0.047). One patient in group A and three in group B died (p=0.61). One or more of these endpoints occurred in 13 (25\%) and 24 (46\%) patients, respectively (p=0.041). INTERPRETATION: High-dose isosorbide dinitrate, given as repeated intravenous boluses after low-dose intravenous furosemide, is safe and effective in controlling severe pulmonary oedema. This treatment regimen is more effective than high-dose furosemide with low-dose isosorbide nitrate in terms of need for mechanical ventilation and frequency of myocardial infarction. This article was published in Lancet and referenced in Journal of Palliative Care & Medicine

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