| Clinical application of diadenosine tetraphosphate (Ap4A:F-1500) for controlled hypotension. | |
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MedLine Citation:
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PMID: 9926194 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: In our animal study, it was revealed that diadenosine tetraphosphate (Ap4A:F-1500) has a dose-dependent hypotension effect of up to 60% decrease in mean arterial pressure compared to control value. Furthermore, in healthy male volunteers, the safety of Ap4A up to 4 mg.min-1 was confirmed. In patients who require surgical procedures under general anesthesia together with controlled hypotension, hypotension was induced by Ap4A in order to examine its hypotensive effect and modulating action on the blood pressure. METHODS: Ten patients who required controlled hypotension and who were scheduled for elective surgery under general anesthesia were studied. Anesthesia was maintained with isoflurane (n = 7) or sevoflurane (n = 3) in oxygen-nitrous oxide. Controlled hypotension was induced by Ap4A administered at a rate of 10-20 micrograms.kg-1.min-1. The dose was adjusted at a maximum rate of 80 micrograms.kg-1.min-1 until the target blood pressure was achieved. Arterial blood pressure and heart rate were monitored. Arterial samples were drawn at 4 separate time points to measure the concentration of Ap4A in the plasma. RESULTS: The time required for attaining the target blood pressure after initiation of Ap4A infusion was about 16 min, and the time lapse between withdrawal of infusion to recovery of blood pressure was about 18 min. No reflex tachycardia was observed during infusion of Ap4A and no rebound hypertension was evident after withdrawal. The plasma Ap4A concentration increased in response to the acceleration rate of Ap4A administration with a tendency of augmented hypotensive effect. CONCLUSION: As it produces an excellent hypotensive effect together with a modulating action on blood pressure, Ap4A was assessed as useful in producing controlled hypotension. |
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Authors:
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Y Kikuta; E Ohiwa; K Okada; A Watanabe; S Haruki |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Acta anaesthesiologica Scandinavica Volume: 43 ISSN: 0001-5172 ISO Abbreviation: Acta Anaesthesiol Scand Publication Date: 1999 Jan |
Date Detail:
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Created Date: 1999-04-13 Completed Date: 1999-04-13 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0370270 Medline TA: Acta Anaesthesiol Scand Country: DENMARK |
Other Details:
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Languages: eng Pagination: 82-6 Citation Subset: IM |
Affiliation:
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Department of Anesthesiology, Teikyo University School of Medicine, Tokyo, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Anesthesia, General Anesthetics, Inhalation / administration & dosage Blood Pressure / drug effects Cardiovascular Agents / administration & dosage, blood, therapeutic use* Dinucleoside Phosphates / administration & dosage, blood, therapeutic use* Dose-Response Relationship, Drug Female Heart Rate / drug effects Humans Hypotension, Controlled / methods* Isoflurane / administration & dosage Male Methyl Ethers / administration & dosage Middle Aged Nitrous Oxide / administration & dosage Oxygen / administration & dosage Surgical Procedures, Elective Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Anesthetics, Inhalation; 0/Cardiovascular Agents; 0/Dinucleoside Phosphates; 0/Methyl Ethers; 10024-97-2/Nitrous Oxide; 26675-46-7/Isoflurane; 28523-86-6/sevoflurane; 5542-28-9/diadenosine tetraphosphate; 7782-44-7/Oxygen |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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