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[Pain after panretinal photocoagulation: 50-millisecond pulse versus conventional pulse]
Brenda Cortez-Trejo1, María Del Pilar Paz-Sosa1, Álvaro José Montiel-Jarquín2
1Instituto Mexicano del Seguro Social, Centro Médico Nacional "Manuel Ávila Camacho", Hospital de Especialidades de Puebla, Servicio de Oftalmología. Puebla, Puebla, México.
Background:
Diabetic retinopathy is a progressive disfunction of blood vessels of the retina secondary to chronic hyperglycemia. There are several treatments, out of which panretinal photocoagulation (PRP) stands out.
Objective:
To compare the level of pain in patients undergoing PRP with different impulse.
Material And Methods:
Comparative, cross-sectional study that compared the level of pain in patients undergoing PRP with a 50-millisecond pulse (group A) versus conventional 200 milliseconds pulse (group B). Mann-Whitney U test was used.
Results:
There were 26 patients, 12 (46.16%) female and 14 (53.84%) males. The median age was 58.73 ± 7.31 (40-75) years. 40 eyes were studied, 18 (45%) right and 22 (55%) left. The mean level of glycated hemoglobin was 8.15 ± 1.08 (6.5-12) %. The mean laser power was 297 ± 53.61 (200-380) and 214.5 ± 41.73 (170-320) milliwatts; the mean fluence was 18.85 ± 5.28 (12-28) J/cm2 and 65.9 ± 12.87 (52-98) J/cm2; the mean level of pain was 3.1 ± 1.33 (1-5) and 7.5 ± 1.23 (6-10) points for group A and B, respectively, and there was statistically significant difference (p ˂ 0.001) in the level of pain. There were no complications in any group.
Conclusion:
The application of retinal 50-millisecond pulse PRP causes less pain and side effects than 200-millisecond pulse PRP.
