Articles: pain-measurement.
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Randomized Controlled Trial Clinical Trial
Determinants of pain assessment by nurses.
In this replication study pain assessment and patient perception by nurses was studied in relation to patient characteristics and nurse characteristics. Nurses were randomly assigned to one of 24 descriptions of a hypothetical patient of constant age and unspecified sex. The 24 descriptions varied by duration of pain, presence of a physical pathology, diagnosis category, and depression symptoms. ⋯ Nursing experience seems also to be important in pain assessment. First-year student nurses attributed less pain to the hypothetical patient than third- and fourth-year student nurses and registered nurses. In addition they perceived the patient as more positive when physical pathology was present or when no symptoms of depression were present.
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Bull. Tokyo Med. Dent. Univ. · Sep 1988
Randomized Controlled Trial Comparative Study Clinical TrialRelationship between subjective pain estimation and somatosensory evoked potentials by electrical tooth stimulation.
The relationship between the amplitude of somatosensory evoked potentials (SEP) and the subjective pain estimation using a visual analogue scale (VAS) was examined in 8 volunteers undergoing randomized electrical tooth stimulation with 3 different intensities. Randomized stimulation was used instead of repetitive stimulation with a fixed intensity in order to minimize the phenomena of habituation and expectancy in recording the SEP and VAS. The VAS scores increased significantly with the stimulus intensity. ⋯ There was a significant correlation between the amplitude of N160-P300 and the VAS scores. These findings indicate that the component between 160 and 300 msec reflects the perceived pain intensity and the psychological evaluation processes such as cognition, meaning, interpretation and appreciation of pain. The method of randomized stimulation can serve as a simple and useful way for the objective or subjective pain estimation.
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Anesthesia and analgesia · Feb 1988
Randomized Controlled Trial Comparative Study Clinical TrialLaser-induced pain for evaluation of local analgesia: a comparison of topical application (EMLA) and local injection (lidocaine).
High-energy lasers are suitable for experimental pain stimulation because they selectively activate the polymodal nociceptors. Argon laser light penetrates deep into the skin and makes this laser type preferable for simulating pain arising from surgical skin incisions. Short argon laser pulses were applied to the skin and three parameters were quantified before and during analgesia; sensory threshold, pain threshold, and the pain-related cortical response (latency and amplitude). ⋯ During the next 30 minutes after removal of the cream, the thresholds increased further. The increase in analgetic effect after removal of the cream was studied using different times (15, 30, 60, 80, 100, and 120 minutes) for topical EMLA cream application. Total sensory block was reached 20 minutes after removal of application for 80 minutes or immediately after removal of the cream after it was applied for 100 or 120 minutes.(ABSTRACT TRUNCATED AT 250 WORDS)