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Canadian Journal of Anesthesia, Vol 16, 66-71, Copyright © 1969 by Canadian Anesthesiologists' Society

Experiences with a Disposable Inhaler for Methoxyflurane Analgesia during Labour: Clinical and Biochemical Results

GERTIE F. MARX M.D.1, LILLIAN KULING CHEN M.D.1, and JORGE A. TABORA M.D.1

1 Department of Anesthesiology, Bronx Municipal Hospital Center, Albert Einstein College of Medicine, Bronx, New York

A new "disposable inhaler for penthrane analgesia" (Abbott), the "Analgizer," was used during labour and delivery in 14 unselected obstetric patients. Clinical evaluation demonstrated good to excellent pain relief without adverse effect on labour, maternal blood pressure or heart rate, foetal heart rate, or condition of the neonate at birth. Biochemical determination in twelve of the mothers and foetuses revealed oxygen tension, carbon dioxide tension, pH, and base deficit values within the normal ranges.

The Analgizer was found to offer four advantages. It is small and lightweight. It is versatile in that it can be used with or without a face mask and with its built-in "diluter hole" open or closed. In addition, it is disposable, thus preventing cross-contamination.






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Copyright © 1969 by the Canadian Anesthesiologists' Society.