Anesthesia and analgesia
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Anesthesia and analgesia · Mar 1976
A comparative study of enflurane and halothane using systolic time intervals.
The effects of enflurane and halothane anesthesia on systolic time intervals were studied in 12 healthy patients. Cardiovascular measurements were made at equipotent levels of anesthesia: enflurane 1.23% end-tidal and halothane 0.65% end-tidal. ⋯ However, halothane caused significantly more myocardial depression than enflurane, as indicated by a larger preejection period (PEP) and preejection period/left ventricular ejection time (PEP/LVET) and a smaller 1/PEP2 and ejection fraction. When N2O was discontinued, both agents increased PEP and PEP/LVET and decreased 1/PEP2 and the ejection fraction.
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Anesthesia and analgesia · Mar 1976
A technic of general anesthesia for blepharoplasty and rhytidectomy.
A series of 66 consecutive cases of blepharoplasty and rhytidectomy are reported, 60 of which were performed with a general anesthesia technic utilizing local anesthesia with epinephrine, in association with enflurane inhalation delivered via bilateral nasopharyngeal airways (BNPA). Six cases were not suitable candidates for the technic because of physical status or for anatomic reasons. The technic has teh advantage of providing airway control without tracheal intubation, light depth of anesthesia, compatibility with epinephrine, and highly acceptable limits of intraoperative bleeding and postoperative hematoma.
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Anesthesia for a patient with gas gangrene presents a challenge for the anesthesiologist, since it is an uncommon disease requiring emergency treatment. The authors, faced with such a challenge and finding little guidance in the literature, have proposed modalities of anesthetic management based on pathophysiology, symptomatology, and the reported experience of others. In addition to choice of anesthetic agents, problems reviewed include shock, hypovolemia, tachycardia, fever, anemia, renal dysfunction, pulmonary insufficiency, and contamination. Factors relating to anesthesia during hyperbaric-O2 therapy are also reviewed.
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Anesthesia and analgesia · Mar 1976
Case ReportsManagement of intractable pain in adiposis dolorosa with intravenous administration of lidocaine.
Intractable pain in a patient with adiposis dolorosa (Dercum's disease) was treated by IV administration of lidocaine (200 to 400 mg). Relief was maximum 20 minutes after the end of drug infusion and persisted for over 10 hours. Toxicity was minimal. Slow EEG waves which appeared during drug administration disappeared within 20 minutes.
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The incidence of contamination of catheters and syringes used during epidural analgesia for parturients and the effectiveness of bacterial filters were investigated. The effect of bupivacaine on bacterial viability and growth was also studied. Syringes in 5/101 cases were contaminated, while catheter tips located in the epidural space were sterile. ⋯ Bupivacaine (0.25%) was bacteriocidal to S epidermidis and Corynebacterium spp at 37C but not at room temperature. These findings illustrate the efficacy of using bacterial filters during continuous epidural analgesia. New syringes should be used for each epidural injection as insurance against seeding of bacteria in the presence of a defective filter.