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  • Title: Assessment of therapy for arterial hypotension in critically ill preterm infants.
    Author: Ruelas-Orozco G, Vargas-Origel A.
    Journal: Am J Perinatol; 2000; 17(2):95-9. PubMed ID: 11023168.
    Abstract:
    The aim of this paper is to assess the efficacy of albumin and dopamine compared with albumin and dobutamine in treating hypotension in preterm newborn infants (PNI). A randomized, open-label, prospective, cross-over study, was designed on 66 PNI whose weights were between 1,000 to 1,500 g, and persistent hypotension, defined as a mean arterial pressure (MAP) of < 30 mmHg. Infants were randomly allocated to two groups and received a 5% albumin infusion at a dosage of 20 mL/kg, in 30 min. Thereafter, one group received dopamine and the other dobutamine at doses of 5 microg/kg/min. If there was not an increase in MAP values > 30 mmHg, the infusions were increased every 20 min by 2.5 microg/kg/min, up to a maximum of 10 microg/kg/min. Treatment failure was considered when there was no pressure response within 2 hr after the infusion started; then patients were changed to the other catecholamine. Statistical analysis was done with student's t-test, x2, and Fisher's exact probability test. There were no differences between groups in initial features. Overall, MAP was normalized with dopamine in 29 of 33 infants and with dobutamine in 25 of 33 infants (p > 0.05). The initial dosage of 5 microg/kg/min, was adequate in 22 infants treated with dopamine and in 13 treated with dobutamine (p < 0.05). The change from dopamine to dobutamine was successful in three out of four patients, while changing from dobutamine to dopamine was adequate in seven out of eight patients. Dopamine is recognized as the drug of choice to treat hypotension in PNI. Since our results showed only small differences in responses, it is proposed that dobutamine is also as efficacious and useful as dopamine.
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