Der Anaesthesist
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Randomized Controlled Trial
[Sympathomimetic effects of low-dose S(+)-ketamine. Effect of propofol dosage].
In analgetic dosages ketamine has stimulatory effects on the cardiovascular system, which limits its use in patients with heart disease. The aim of this study was to clarify whether low-dose S(+)-ketamine used to prevent chronic pain similarly stimulates the cardiovascular system and to determine the impact of propofol dosage on this effect. ⋯ Even low-dose S(+)-ketamine has a stimulatory effect on the cardiovascular system. This stimulatory effect is nullified in the presence of a continuous propofol infusion at a dosage of more than 3 mg/kg BW/h.
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Randomized Controlled Trial
[Intrathecal morphine in orthopaedic surgery patients. Optimised dose in patients receiving dipyrone].
The influence of different postoperative doses of intrathecal morphine on the time of first opioid request by orthopaedic patients was investigated. The first choice analgesic was dipyrone and a maximum dose of 6 mg/day was allowed. ⋯ In orthopaedic patients with dipyrone as the primary analgesic, the addition of 0.1 mg or 0.2 mg morphine to spinal anaesthesia provided a simple long-lasting postoperative analgesia and the use of additional opioids could be avoided during the 24h postoperative period.