Anaesthesia
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Comment Letter Comparative Study
A comparison of 25G and 27G Whitacre needles for caesarean section.
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Randomized Controlled Trial Clinical Trial
The effect of midazolam premedication on implicit memory activation during alfentanil-nitrous oxide anaesthesia.
Eighty-three patients were given midazolam 0.1 mg.kg-1 by intramuscular injection as premedication before general anaesthesia with alfentanil-nitrous oxide. During anaesthesia patients were presented (through headphones) with either statements about common facts of some years ago (group A) (n = 43) or new verbal associations, e.g. names of fictitious, nonfamous people (group B) (n = 40). ⋯ In this study we found no explicit or implicit memory for the auditory information presented during anaesthesia. Midazolam premedication can prevent implicit memory activation during alfentanil-nitrous oxide anaesthesia.
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Dr Nathan Cooley Keep (1800-1875) was a Boston dentist and doctor who carried our pioneering work in both dentistry and anaesthesia. He worked with William Morton before the first public demonstration of ether anaesthesia, formed the world's first anaesthetic partnership with Morton but parted company with him and later opposed Morton's claim to be the sole inventor of ether anaesthesia.
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The American Society of Anesthesiologists' (ASA) Physical Status Classification was tested for consistency of use by anaesthetists. A postal questionnaire was sent to 113 anaesthetists of varying experience working in the Northern Region of England. They were asked to allot ASA grades to 10 hypothetical patients. ⋯ In no case was there complete agreement on ASA grade, and in only one case were responses restricted to two of the five possible grades. In one case there was a significant difference in answers between anaesthetists with the FRCA (or equivalent) qualification, and those without. So much variation was observed between individual anaesthetist's assessments when describing common clinical problems that the ASA grade alone cannot be considered to satisfactorily describe the physical status of a patient.