Articles: analgesia.
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Anesthesia and analgesia · Jul 1993
Laboratory evaluation of the Baxter Patient-Controlled Analgesia Infusor System: a disposable patient-controlled analgesia device.
The purpose of this study was to determine the accuracy of bolus-demand volumes obtained from the Baxter Patient-Controlled Analgesia Infusor System, a disposable patient-controlled analgesia device. An automated system was used to make demands in a pattern designed to simulate those made by a patient in the first 24 postoperative hours. Following this, a pattern of varying short interdemand intervals was used to evaluate performance of the device when demands were made near the nominal lockout interval of 6 min. ⋯ Evaluation near the nominal lockout interval revealed a departure of delivered volume from nominal (worst = 73.9% at an interdemand interval of 6 min). As the reservoir became exhausted, delivery increased to a maximum value, ranging from 118% to 137% of nominal, before falling to zero. In general, the devices performed consistently and the departures from nominal delivery were not considered to be of clinical significance.
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The management of cancer pain has been a primary focus in the authors' program of oncology nursing research. A study currently in progress entitled, "Assessment and Management of Pain for Elderly Cancer Patients at Home," applies knowledge of the authors' earlier work in an educational nursing intervention for patients with cancer and their family care-givers in the home. ⋯ Five categories of nondrug intervention are used including heat, cold, massage/vibration, distraction, and relaxation. The purpose of this article is to report on the development and initial results of the nondrug portion of a pain education program.
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1. The opioid type of swim-stress induced antinociception (SIA) is mediated via mu-sites in preweanling rats and predominantly by delta-sites in postweanling animals. We have studied the effect of delay of weaning on the receptor transition of this behaviour in the developing rat. 2. ⋯ In 30 day old non-weaned rats, naltrindole (5 mg kg-1) abolished the swim SIA. 6. In conclusion, transition from mu to delta-receptor control of swim SIA in rat pups can be delayed by between 5 and 10 days by delay of weaning. The environmental stimulus of weaning can activate opioid receptor subtype operation of biological responses in the developing animal.
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Pain management has emerged as a priority patient care issue, especially in the oncology setting. For most patients with advanced cancer, pain is a major symptom. Cancer pain can be acute, chronic, or a combination. ⋯ Recommendations are offered for organization of services, reliance on primary nurses, and involvement of the multidisciplinary team. Safety concerns and other patient-related issues are highlighted. Based on Memorial Hospital experience, the authors conclude that an acute pain service has an important role in meeting the needs of patients with cancer.
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The 10 months after the introduction of the first acute pain relief service (APRS) in southern Africa is described. Seven hundred patients were treated with morphine by means of patient-controlled analgesia (PCA), administered to patients after major surgery or extensive burns via the intravenous (IV) or subcutaneous (SC) route. The efficacy, safety and resource implications were assessed. ⋯ A total of 86,861 mg morphine was used during this period with rare morbidity and no mortality. Only 1 patient experienced sedation and respiratory depression. The benefits of an APRS with PCA to patients and medical staff alike are discussed.