What question did this study set out to answer?

To evaluate the relationship between operator experience and patient mortality associated with spinal anesthesia administration.

January 28, 1933JAMA

Spinal Anesthesia

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Why the study?

Does operator experience reduce mortality associated with spinal anesthesia?

To evaluate the relationship between operator experience and patient mortality associated with spinal anesthesia administration.
Reviewed published medical literature on spinal anesthesia mortality spanning from 1907 to 1930.
Surveyed surgeons at the 1931 American Medical Association Scientific Exhibit to assess outcomes for operators with series of fewer than 500 cases (41% from interviews, 59% from literature).
Spinal anesthesia demonstrated higher proportional mortality relative to the total number of administrations than any other anesthetic technique.
Mortality rates decreased progressively as operator clinical experience and cumulative procedure volume increased.

Does operator experience reduce mortality associated with spinal anesthesia?

Population

Patients receiving spinal anesthesia (data from literature 1907-1930 and interviews in 1931)

Intervention

Spinal anesthesia

Outcome

Mortalityhard clinical

Mortality from spinal anesthesia is high but decreases with operator experience.

No takes yet. Share an insight, caveat, or question.

May support prioritizing experienced operators for spinal anesthesia; leaves open prospective validation of experience thresholds.

Bower et al. (1933) studied this question.

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