Articles: pain-measurement.
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Seventeen drawings of localised low-back pain were analysed by two assessors using 4 systems. Three were grid-based systems and one was by computer. The mean area or 'extent' was calculated to be 7.7%, 4.7%, 3.6% and 2.3% of the body outline using 45, 200, 560 and 61,102 section analyses, respectively. ⋯ Correlation coefficients of extent between the systems varied from 0.46 to 0.94. Correlation was highest between systems of adjacent magnitude of sections. It is concluded that grid-based assessment of small areas overestimates the actual area of pain and this may account for the lack of sensitivity to change in clinical status.
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Twenty-eight patients, aged 58 years or more and with clinical and radiological evidence of degenerative osteoarthritis of the knee joint, were entered into an open 6-month pilot study. Patients received a single intra-articular injection of tenoxicam (20 mg) into the affected knee with rigid adherence to aseptic technique. Efficacy was assessed in 25 evaluable patients according to three parameters: pain, hydrarthrosis and range of joint movement. ⋯ Range of movement of the affected joint 1 month after injection was increased in 60% (15/25) of patients, decreased in 16% (4/25), and unchanged in 24% (6/25). Two patients reported a slight allergic reaction to the injection; no other side-effects were detected. The results of this pilot study justify investigating the efficacy of intra-articular tenoxicam in controlled double-blind studies.
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Randomized Controlled Trial Clinical Trial
Chronic tension-type headache: amitriptyline reduces clinical headache-duration and experimental pain sensitivity but does not alter pericranial muscle activity readings.
In a double-blind, placebo-controlled trial, the effect of 75 mg of a slow-release formulation of amitriptyline on the clinical severity of chronic tension-type headache and on headache-associated neurophysiological parameters (EMG activity, exteroceptive suppression of temporal muscle activity, contingent negative variation (CNV) and experimental pain sensitivity) was investigated. All of the patients treated had a history of headaches of many years' standing and many of them had failed attempts at treatment. In the amitriptyline group, a significant reduction in daily headache duration was already found in the 3rd week of treatment, while in the placebo group no significant changes in headache duration were to be seen. ⋯ The sensitivity to suprathreshold experimental pain, however, was significantly reduced. The data show a statistically relevant reduction of daily headache duration. However, they also show that amitriptyline can only partly alleviate chronic headaches but cannot cure them.
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Clinical Trial
Muscle palpation with controlled finger pressure: new equipment for the study of tender myofascial tissues.
While manual palpation is the most important method for evaluation of tender myofascial tissues, it lacks reliability. Therefore, we have developed an instrument, called a 'palpometer', which allows the measurement of pressure exerted during palpation. The palpometer consists of a thin pressure-sensitive plastic device attached to the palpating finger, and of a scale recording the pressure applied to the device. ⋯ Thus, a reliable instrument for measuring pressure intensities during palpation of myofascial tissue has been developed. The large variation in palpation pressures between observers indicates that palpation of tender myofascial tissue may be considerably improved by use of the palpometer. This instrument will be indispensable in research studies employing palpation and in the training of physicians to diagnose myofascial pain disorders.
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Research is lacking on factors influencing nurses' decision-making directed at the diagnosis of pain in children and its related interventions. This paper reports on two studies, namely a qualitative study and its replication, in which we explored factors influencing nurses' pain assessments and interventions in children. Those factors found to influence nurses' decisions were: medical diagnosis, child's expressions, age, and parents, and the nurses' knowledge, experience, attitude and workload. ⋯ Furthermore, it is suggested that mainly vocal expressions, especially crying, influence nurses' decisions to administer analgesics. Finally, nurses' negative views on non-narcotic analgesics were striking. In this paper, the results of both studies and their relationship to information reported in the literature are further elaborated and discussed, and hypotheses on strength and direction of influence of factors on pain assessment and intervention are generated.