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Anaesthesia for translumbar aortography.

M Smith, J K Myatt, M N Harris

    Anaesthesia
    |July 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

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    Spontaneous ventilation using enflurane or isoflurane anesthesia is safe for translumbar aortography. Both anesthetic agents maintained adequate oxygenation and stable heart rates, with isoflurane showing lower carbon dioxide levels.

    Area of Science:

    • Anesthesiology
    • Cardiovascular Surgery
    • Medical Imaging

    Background:

    • Translumbar aortography is an essential diagnostic procedure.
    • Anesthetic management for translumbar aortography requires careful consideration of patient hemodynamics and respiratory function.
    • Evaluating the safety and efficacy of different volatile anesthetic agents for spontaneous ventilation during this procedure is crucial.

    Purpose of the Study:

    • To compare the effects of enflurane versus isoflurane anesthesia on hemodynamics and gas exchange during translumbar aortography.
    • To assess the suitability of spontaneous ventilation with these agents for the procedure.

    Main Methods:

    • Fifty patients undergoing elective translumbar aortography were randomized to receive either enflurane or isoflurane.

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  • Patients received oral lorazepam premedication, tracheal intubation, and breathed spontaneously in the prone position.
  • Hemodynamic parameters (heart rate, blood pressure) and arterial blood gases (oxygen, carbon dioxide) were monitored.

    • Main Results:

    • No significant difference in heart rate was observed between the enflurane and isoflurane groups.
    • A statistically significant fall in blood pressure occurred from pre-induction levels in both groups.
    • Arterial oxygenation remained adequate throughout the procedure. Arterial carbon dioxide tension was significantly lower in the isoflurane group (p < 0.01) at the beginning and end of the procedure.

    Conclusions:

    • Spontaneous ventilation with either enflurane or isoflurane is a satisfactory anesthetic technique for translumbar aortography.
    • Both agents provide adequate oxygenation and stable heart rates, with isoflurane demonstrating a potential advantage in maintaining lower carbon dioxide levels.