July 30, 2016
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Prostin VR Pediatric

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Prostin VR Pediatric




Warnings
Precautions

WARNINGS

See WARNING BOX.

NOTE: PROSTIN VR PEDIATRIC Sterile Solution must be diluted before it is administered. See dilution instructions in DOSAGE AND ADMINISTRATION section.

The administration of PROSTIN VR PEDIATRIC to neonates may result in gastric outlet obstruction secondary to antral hyperplasia. This effect appears to be related to duration of therapy and cumulative dose of the drug. Neonates receiving PROSTIN VR PEDIATRIC at recommended doses for more than 120 hours should be closely monitored for evidence of antral hyperplasia and gastric outlet obstruction.

PROSTIN VR PEDIATRIC should be infused for the shortest time and at the lowest dose that will produce the desired effects. The risks of long-term infusion of PROSTIN VR PEDIATRIC should be weighed against the possible benefits that critically ill infants may derive from its administration.

PRECAUTIONS

General Precautions

Cortical proliferation of the long bones, first observed in dogs, has also been observed in infants during long-term infusions of alprostadil. The cortical proliferation in infants regressed after withdrawal of the drug.

In infants treated with PROSTIN VR PEDIATRIC at the usual doses for 10 hours to 12 days and who died of causes unrelated to ductus structural weakness, tissue sections of the ductus and pulmonary arteries have shown intimal lacerations, a decrease in medial muscularity and disruption of the medial and internal elastic lamina. Localized and aneurysmal dilatations and vessel wall edema also were seen compared to a series of pathological specimens from infants not treated with PROSTIN VR PEDIATRIC. The incidence of such structural alterations has not been defined.

Because alprostadil inhibits platelet aggregation, use PROSTIN VR PEDIATRIC cautiously in neonates with bleeding tendencies.

PROSTIN VR PEDIATRIC should not be used in neonates with respiratory distress syndrome. A differential diagnosis should be made between respiratory distress syndrome (hyaline membrane disease) and cyanotic heart disease (restricted pulmonary blood flow). If full diagnostic facilities are not immediately available, cyanosis (pO2 less than 40 torr) and restricted pulmonary blood flow apparent on an Xray are appropriate indicators of congenital heart defects.

Necessary Monitoring

In all neonates, arterial pressure should be monitored intermittently by umbilical artery catheter, auscultation, or with a Doppler transducer. Should arterial pressure fall significantly, decrease the rate of infusion immediately.

In infants with restricted pulmonary blood flow, measure efficacy of PROSTIN VR PEDIATRIC by monitoring improvement in blood oxygenation. In infants with restricted systemic blood flow, measure efficacy by monitoring improvement of systemic blood pressure and blood pH.

Carcinogenesis, Mutagenesis, And Impairment Of Fertility

Long-term carcinogenicity studies and fertility studies have not been done. The Ames and Alkaline Elution assays reveal no potential for mutagenesis.

This monograph has been modified to include the generic and brand name in many instances.

Last reviewed on RxList: 6/13/2016

Warnings
Precautions

Report Problems to the Food and Drug Administration

 

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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