NURS 2004 Study Guide - Midterm Guide: Ureter, Vaginal Bleeding, Cecum
28 Apr 2017
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Document Summary
A physiologic response that serves as a warning. Pain is whatever the person says it is, existing whenever he/she says it does. An unpleasant, emotional, sensory experience with actual or potential damage and described in terms of such damage. Lactic acid- from anaerobic metabolism- stimulates nociceptors pgs- from exposed phospholipid of broken cell membranes; stimulates and increase sensitivity. Peripheral nerves a-delta: myelinated, fast, sharp, localized pain. Impulse from peripheral nerve crosses synapse in dorsal horn (in the substantia gelatinosa) and activates nerve in spinal cord. Reticular and limbic system (pain awareness, emotion) Activates when another area is receviing noxious stimuli at the same time as the original painful area. E. g. acupuncture, deep massage, applying an ice pack. Action potential along a- delta fibres to cns. Distress, fear, anxiety, crying (limbic/ reticular activation) S&s: no hpa, probably depressed mood, difficulty eating/ sleeping, Chronic pain caused by damage to/ dysfunction of nerves/ nervous system.
