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KMID : 0213520070210020100
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Korean Journal of Ophthalmology
2007 Volume.21 No. 2 p.100 ~ p.105
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The Results of B-scan Ultrasonography in Different Positions after Vitrectomy and Gas Tamponade
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Park Sang-Hyuk
Lee Sung-Jin
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Abstract
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Purpose: To determine the proper time frame in which to assess retinal attachment status and to evaluate the superior retinal attachment status by performing B-scan ultrasonography in different positions on patients who have undergone pars plana vitrectomy and gas tamoponade.
Methods: In this prospective study, 23 patients (23 eyes) who had undergone pars plana vitrectomy and gas tamponade were investigated between June 2005 and February 2006. SF6 (18%) was injected into the vitreous cavity of 15 eyes, and C3F8 (14%) was injected into the vitreous cavity of 8 eyes. At postoperative day 1, day 3, week 1, week 2, and week 4, B-scan ultrasonography was performed in the supine, sitting, prone, right decubitus, and left decubitus positions.
Results: The proper time to evaluate the retinal attachment status was three days post-operatively in 10 eyes (66.7%) with SF6 (18%) injections and two weeks post-operatively in six eyes (75%) that had C3F8 (14%) injections. The superior retinal attachment status can be evaluated from the summation of B-scan ultrasonography results performed in the right decubitus and left ducubitus positions.
Conclusion: The proper time to evaluate the retinal attachment status was related to the degree of the gas absorption when performing B-scan ultrasonography after pars plana vitrectomy and gas tamponade. To evaluate the entire retina, it is useful to perform B-scan ultrasonograhy in the prone, right decubitus and left decubitus positions.Korean Journal of Ophthalmology 21(2):100-105, 2007
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KEYWORD
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B-scan ultrasonography, Gas tamponade, Position, Vitrectomy
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