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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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At two weeks postoperatively, results of B-scan ultrasonography with patients assuming different positions on the eyes undergoing vitrectomy and using a 14% C3F8 gas tamponade. (A) Supine position: can not evaluate the retinal attachment status. (B) Sitting position: can evaluate the retinal attachment status greater than 180°. (C) Prone position: can not the retinal attachment status. (D) Right decubitus position: can evaluate the retinal attachment status greater than 180°. (E) Left decubitus position: can evaluate the retinal attachment status greater than 180°.
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Figure 6: At two weeks postoperatively, results of B-scan ultrasonography with patients assuming different positions on the eyes undergoing vitrectomy and using a 14% C3F8 gas tamponade. (A) Supine position: can not evaluate the retinal attachment status. (B) Sitting position: can evaluate the retinal attachment status greater than 180°. (C) Prone position: can not the retinal attachment status. (D) Right decubitus position: can evaluate the retinal attachment status greater than 180°. (E) Left decubitus position: can evaluate the retinal attachment status greater than 180°.

Mentions: In the eyes injected with 14% C3F8, the retinal attachment condition could not be evaluated by B-scan ultrasound performed on day 1, day 3 or week 1 after surgery, regardless of the test position used (Fig. 5). In the eyes injected with 14% C3F8, the evaluation of the retina was still impossible even two weeks following surgery in patients who were in the supine or prone position during B-scan ultrasonography. However, the retina in the "greater than 180 degrees" range could be assessed in 87.5% (7/8 eyes) of patients in the sitting position, 75.0% (6/8 eyes) in the right decubitus position and 75.0% (6/8 eyes) in the left decubitus position. In eyes injected with 14% C3F8, the retinal attachment condition could be evaluated in 75% (6/8 eyes) (Fig. 6) of patients at two weeks after surgery when the ultrasound was performed in the sitting position, the right decubitus position or the left decubitus position.


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

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

At two weeks postoperatively, results of B-scan ultrasonography with patients assuming different positions on the eyes undergoing vitrectomy and using a 14% C3F8 gas tamponade. (A) Supine position: can not evaluate the retinal attachment status. (B) Sitting position: can evaluate the retinal attachment status greater than 180°. (C) Prone position: can not the retinal attachment status. (D) Right decubitus position: can evaluate the retinal attachment status greater than 180°. (E) Left decubitus position: can evaluate the retinal attachment status greater than 180°.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 6: At two weeks postoperatively, results of B-scan ultrasonography with patients assuming different positions on the eyes undergoing vitrectomy and using a 14% C3F8 gas tamponade. (A) Supine position: can not evaluate the retinal attachment status. (B) Sitting position: can evaluate the retinal attachment status greater than 180°. (C) Prone position: can not the retinal attachment status. (D) Right decubitus position: can evaluate the retinal attachment status greater than 180°. (E) Left decubitus position: can evaluate the retinal attachment status greater than 180°.
Mentions: In the eyes injected with 14% C3F8, the retinal attachment condition could not be evaluated by B-scan ultrasound performed on day 1, day 3 or week 1 after surgery, regardless of the test position used (Fig. 5). In the eyes injected with 14% C3F8, the evaluation of the retina was still impossible even two weeks following surgery in patients who were in the supine or prone position during B-scan ultrasonography. However, the retina in the "greater than 180 degrees" range could be assessed in 87.5% (7/8 eyes) of patients in the sitting position, 75.0% (6/8 eyes) in the right decubitus position and 75.0% (6/8 eyes) in the left decubitus position. In eyes injected with 14% C3F8, the retinal attachment condition could be evaluated in 75% (6/8 eyes) (Fig. 6) of patients at two weeks after surgery when the ultrasound was performed in the sitting position, the right decubitus position or the left decubitus position.

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