Articles: general-anesthesia.
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Acta Anaesthesiol Scand · Jan 1977
General anaesthesia or lumbar epidural block for caesarean section? Effects on the foetal heart rate.
Caesarean section was performed in 10 patients under general anaesthesia and in 10 other patients under epidural block. The foetal heart rate was monitored continuously during anaesthesia and operation with a scalp electrode and a cardiotocograph. There was no major difference between the two anaesthetic techniques in their effect on the foetal heart rate. ⋯ The operative time was longer in the epidural group than in the general anaesthesia group, due to a higher frequency of Pfannenstiel incisions and repeat caesarean sections in the epidural group. Clinically, all newborns seemed to be unaffected, with normal Apgar scores. Epidural block seems to be a good alternative to general anaesthesia for caesarean section, particularly when a long operative time is expected.
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Acta Anaesthesiol Scand Suppl · Jan 1977
Clinical TrialClinical evaluation of high-frequency positive-pressure ventilation (HFPPV) in laryngoscoy under general anaesthesia.
A technique for automatic ventilation during laryngoscopy under general anaesthesia was evaluated in a lung model and in 5 patients (3--57 y) submitted for routine laryngoscopy. this technique has been given the name laryngoscopic HFPPV and utilizes an insufflation frequency (f) of 60 per min and a relative insufflation time (t%) of 22%. Ventilation is given via a nasotracheal insufflation catheter. Laryngoscopic HFPPV permits laryngeal surgery with a virtually unobstructed surgical field under complete muscular relaxation. ⋯ A simple ventilation nomogram for clinical use is proposed. Adequately used, this nomogram guarantees safe ventilation during laryngoscopic HFPPV. An Fio2 of 0.3--0.4 gives adequate arterial oxygenation.