[Postoperative pain relief with electrostimulation].
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Biomedical subjects
Publications and source records attributed to P M Pike.
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Forty patients who were to have total hip replacement were randomly allocated to two groups. One group received intramuscular pethidine (30 mg) alone for postoperative analgesia in the first 24 h, the other received transcutaneous stimulation (TES) and pethidine as necessary. The use of pethidine was compared in the two groups under standardised conditions of time, operative and anaesthetic techniques. There was less pethidine used in the TES group. The technique is simple and non-invasive and can be used continuously. It was well accepted by both patients and staff. The electrodes must be prepared carefully and placed accurately. An ideal stimulation effect was often achieved by similar patterns of stimulating parameters.
A technique for continuous block of the brachial plexus is described using an indwelling teflon cannula positioned according to the anatomical dictates of the supraclavicular and interscalene spaces. The anatomy is presented as key to consistent results. Advantages of a continuous block are an extension of normal block duration, block placement independent of operating times and a possible application to intensive care patients.
A device to modify the physiological impact of the abrupt transition of IPPV and PEEP to spontaneous breathing is described. It consists of a coaxial breathing system with a spring-loaded reservoir bag and underwater pressure limit. Electric alarms are incorporated.