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The results of B-scan ultrasonography in different positions after vitrectomy and gas tamponade.

Park SH, Lee SJ - Korean J Ophthalmol (2007)

Bottom Line: 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.SF(6) (18%) was injected into the vitreous cavity of 15 eyes, and C(3)F(8) (14%) was injected into the vitreous cavity of 8 eyes.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.

View Article: PubMed Central - PubMed

Affiliation: Department of Ophthalmology, Soonchunhyang University College of Medicine, Seoul, Korea.

ABSTRACT

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. SF(6) (18%) was injected into the vitreous cavity of 15 eyes, and C(3)F(8) (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 SF(6) (18%) injections and two weeks post-operatively in six eyes (75%) that had C(3)F(8) (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.

Conclusions: 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.

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Photographs of B-scan ultrasonography with patients in different positions. (A) Supine position. (B) Sitting position. (C) Prone position. (D) Right decubitus position. (E) Left decubitus position.
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Figure 1: Photographs of B-scan ultrasonography with patients in different positions. (A) Supine position. (B) Sitting position. (C) Prone position. (D) Right decubitus position. (E) Left decubitus position.

Mentions: B-scan ultrasonography (A/B scan workstation®, P37, Paradigm, USA) was measured at 80 dB. Follow-ups were performed on day 1, day 3, week 1, week 2 and week 4 after surgery in the supine, prone, right decubitus, and left decubitus positions (Fig. 1). The positions were changed by the patients, and the centerline of the patient was maintained vertically or horizontally based on the horizontal surface. The areas that could be estimated using ultrasound were divided into the two categories of "greater than 180 degrees" and "less than 180 degrees" and then evaluated (Tables 3 and 4). In cases in which the echogenic and low echoic borderlines were more than half of the line connecting the equator of both eyes, the evaluable retina was defined as "greater than 180 degrees", while the cases with less than half of the line connecting the equator of both eyes were defined as "less than 180 degrees."


The results of B-scan ultrasonography in different positions after vitrectomy and gas tamponade.

Park SH, Lee SJ - Korean J Ophthalmol (2007)

Photographs of B-scan ultrasonography with patients in different positions. (A) Supine position. (B) Sitting position. (C) Prone position. (D) Right decubitus position. (E) Left decubitus position.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2629703&req=5

Figure 1: Photographs of B-scan ultrasonography with patients in different positions. (A) Supine position. (B) Sitting position. (C) Prone position. (D) Right decubitus position. (E) Left decubitus position.
Mentions: B-scan ultrasonography (A/B scan workstation®, P37, Paradigm, USA) was measured at 80 dB. Follow-ups were performed on day 1, day 3, week 1, week 2 and week 4 after surgery in the supine, prone, right decubitus, and left decubitus positions (Fig. 1). The positions were changed by the patients, and the centerline of the patient was maintained vertically or horizontally based on the horizontal surface. The areas that could be estimated using ultrasound were divided into the two categories of "greater than 180 degrees" and "less than 180 degrees" and then evaluated (Tables 3 and 4). In cases in which the echogenic and low echoic borderlines were more than half of the line connecting the equator of both eyes, the evaluable retina was defined as "greater than 180 degrees", while the cases with less than half of the line connecting the equator of both eyes were defined as "less than 180 degrees."

Bottom Line: 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.SF(6) (18%) was injected into the vitreous cavity of 15 eyes, and C(3)F(8) (14%) was injected into the vitreous cavity of 8 eyes.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.

View Article: PubMed Central - PubMed

Affiliation: Department of Ophthalmology, Soonchunhyang University College of Medicine, Seoul, Korea.

ABSTRACT

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. SF(6) (18%) was injected into the vitreous cavity of 15 eyes, and C(3)F(8) (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 SF(6) (18%) injections and two weeks post-operatively in six eyes (75%) that had C(3)F(8) (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.

Conclusions: 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.

Show MeSH
Related in: MedlinePlus