Articles: pain-measurement.
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Comparative Study
Pain assessment by patients and nurses in the early phase of acute myocardial infarction.
In 47 patients admitted to the coronary care unit (CCU) at Sahlgren's Hospital in Göteborg, Sweden, due to acute myocardial infarction (MI) the intensity of pain independently assessed by the patient and by the nurse on duty was evaluated during the first 24 hours in CCU. Pain was assessed according to a modified numerical rating scale graded from 0-10, where 0 meant no pain and 10 meant the most severe pain. A positive correlation between the patients' and nurses' assessments was found (r = 0.76; P less than 0.001). ⋯ Treatment with morphine did not cause substantial pain relief in a substantial number of patients. A significantly positive correlation was found between the patients' and nurses' assessments of pain, although under-estimation as well as over-estimation occurred. A few patients with severe pain were not treated and when treatment was given it was often ineffective.
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The development of a new scale, the Somatic Amplification Rating Scale (SARS), for the quantification of exaggerated (nonorganic) motor, sensory, and pain responses occurring during a standardized physical examination is described. This 13-item scale, partially based on a measure of nonorganic physical signs developed by Waddell et al, was administered to 127 low-back pain patients at an outpatient pain center. ⋯ Interrater reliability of the finalized seven-item scale was excellent (R = 0.93). Finally, it was determined that patients with high SARS scores were significantly more likely to be receiving workers' compensation benefits and to endorse physical symptoms with greater intensity on psychologic testing (Symptom Checklist 90).
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In repeated clinical studies a preponderance of pain syndromes on the left side of the body has frequently been observed. Experimental studies in humans revealed a lower pain threshold on the left, nondominant side. On the other hand, some studies do not confirm this lateralization. ⋯ For pain induced by pressure, lateral asymmetry increased with pain intensity, for the other two methods it was constant. Lateral asymmetry was found in all subjects, but significant differences could only be demonstrated in female Ss. It is concluded that both gender and handedness contribute to lateral asymmetry of pain sensitivity in man.
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A short form of the McGill Pain Questionnaire (SF-MPQ) has been developed. The main component of the SF-MPQ consists of 15 descriptors (11 sensory; 4 affective) which are rated on an intensity scale as 0 = none, 1 = mild, 2 = moderate or 3 = severe. Three pain scores are derived from the sum of the intensity rank values of the words chosen for sensory, affective and total descriptors. ⋯ The correlations were consistently high and significant. The SF-MPQ was also shown to be sufficiently sensitive to demonstrate differences due to treatment at statistical levels comparable to those obtained with the standard form. The SF-MPQ shows promise as a useful tool in situations in which the standard MPQ takes too long to administer, yet qualitative information is desired and the PPI and VAS are inadequate.
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This article reviews the methods currently in use for the measurement of chronic pain. The most important items for inclusion in questionnaires about the history and in pain diaries to elicit data on the time-course of pain are presented, and both the aims and the advantages and disadvantages of various strategies are discussed. The documentation of chronic pain in outpatients would allow answers to some questions concerned with medical epidemiology if practiced in a large number of therapeutic institutions, especially if the data were processed and evaluated by microcomputer.