Kempen et al. (1998) studied this question. A risk index for pregnancy during anesthesia was proposed, but the abstract provides no specific clinical findings or quantitative data.

synapsesocial.com/papers/6a6cda1cac440176ef26db10 https://doi.org/10.1097/00132586-199804000-00043

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1Anesthesia-Related Deaths During Obstetric Delivery in the United States, 1979???19901997 · 49 citations
2THE ROLE OF ANESTHESIA IN OBSTETRIC MORTALITY1961 · 11 citations
3Minimizing the Risk of Accidental Dural Puncture With Epidural Analgesia for Labor2013 · 1 citations
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5Incidence of Preeclampsia2014 · 8 citations

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

1Anesthesia-Related Deaths During Obstetric Delivery in the United States, 1979???19901997 · 49 citations
2THE ROLE OF ANESTHESIA IN OBSTETRIC MORTALITY1961 · 11 citations
3Minimizing the Risk of Accidental Dural Puncture With Epidural Analgesia for Labor2013 · 1 citations
4MP04-01 DOES TYPE OF ANESTHESIA DURING THE SURGICAL MANAGEMENT OF SUSPECTED RENAL COLIC DURING PREGNANCY HAVE AN IMPACT ON PRETERM BIRTH?2024
5Incidence of Preeclampsia2014 · 8 citations