Noise Unwanted sound PURE SINE TONE Sound level
- Slides: 68
騷音, Noise 원치 않는 소리 Unwanted sound
PURE SINE TONE
Sound level meter
Noise dosimeter
감각신경성난청 otosclerosis
소리 굽쇠(tuning fork)
Hair cell의 손상
진동의 물리적 성질 • • Displacement : s, mm Velocity : v, cm/sec Acceleration : a, cm/sec 2, d. B Jerk : srms, s root mean square
진동증후군 개론 • Raynaud’s phenomenon: Mauric Raynaud(1862) • Vasular spasm, white finger; Loriga(1911) • TVD(traumatic vasospsdic disease); Wright(1940) • Raynaud’s phenomenon of occupational origin; Agate(1949) • VWF(vibration induced white finger): Industrial advisory council(1970) • Vibration disease; Takamatsu(1976) • Vibration syndrome; Taylor(1974)
a. The staging is made each hand. The final grade of the disorder is indicated by the stage and the number of affected fingers in each hand(e. g. stage/hand/no, of digits)
Screening test - 1 • Vascular Assessment – Adison’s test (neck rotation and deep inspiration) – Allen’s test (compression of vessels at wrist) – Nailbed compression test – Cold provocation test – Doppler test
Screenig Test - 2 • Neurologic Assessment – Light touch (cotton wool) – Pain (pin prick) – Temperature (cold and heat) – Vibration perception threshold – Phalen’s test (wrist flexion) – Tinnel’s test (carpal tunnel percussion)
Screeing Test - 3 • Musculoskeletal Assessment – Grip strength – Pinch test – Manupulative dexterity
Skin thermometer
Finger Tapping Test
Nail Press Test
치료 • Local measure – hot pack, paraffin bath, infrared therapy • Cervical block sympathectomy, ganglion – 장기간에 걸친 결과가 신통치 않음 • Drug – calcium channel blocker(nifedipine), α-blocker(prazocin)
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