Anesthesia and analgesia
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Anesthesia and analgesia · Mar 2024
Detection of Postpartum Hemorrhage Using Compensatory Reserve Index in Patients Undergoing Cesarean Delivery.
Postpartum hemorrhage (PPH) is the leading cause of maternal death worldwide. Early recognition and management are imperative for improved outcomes. The compensatory reserve index (CRI) is a novel physiological parameter that trends changes in intravascular volume, by continuously comparing extracted photoplethysmogram waveforms to a reference model that was derived from a human model of acute blood loss. This study sought to determine whether the CRI pattern was differential between those who do and do not experience PPH during cesarean delivery and compare these results to the American Society of Anesthesiologists (ASA) standards for noninvasive monitoring. ⋯ CRI detects changes in central volume status not distinguished by MAP. It has the potential to serve as a continuous, informative metric, notifying providers of acute changes in central volume status due to PPH during cesarean delivery.
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Anesthesia and analgesia · Mar 2024
Bispectral Index Changes Following Boluses of Commonly Used Intravenous Medications During Volatile Anesthesia Identified From Retrospective Data.
Although patients are commonly monitored for depth of anesthesia, it is unclear to what extent administration of intravenous anesthetic medications may affect calculated bispectral (BIS) index values under general anesthesia. ⋯ Modest, but persistent changes in BIS index occurred following doses of ketamine (increase) and midazolam (decrease) during periods of stable volatile anesthetic administration.
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Anesthesia and analgesia · Mar 2024
The First Etherization in England: New Research Regarding the Identity of the First Patient, Miss Lonsdale.
On December 19, 1846, at the London home of Francis Boott, dentist James Robinson administered the vapor of diethyl ether to a young female patient named Miss Lonsdale. This was the earliest known attempt in England to provide painless operating conditions for a dental extraction, and it was successful. Many authors have since written much about Boott and Robinson, but scarcely anything is known about Miss Lonsdale. ⋯ Both subsequently emigrated to the United States where they were well-known stage performers. Accordingly, we suggest that both are highly probable candidates for that etherized patient, with the younger sister Adeline then more publicly recognizable. However, no records were found that directly associated any of the Miss Lonsdale candidates with that first dental anesthetic in England.