Factors Related to Intraocular Pressure Change among Patients Undergoing Laparoscopic Radical Prostatectomy
Keywords:
intraocular pressure, prostatectomy, steep Trendelenburg position, laparoscopic surgeryAbstract
This descriptive correlation study aimed to examine intraocular pressure (IOP) difference between pre and post laparoscopic radical prostatectomy and explore relationships among body mass index, mean arterial pressure, duration of steep Trendelenburg position, end-tidal carbon dioxide, and pre-post-operative difference in intraocular pressure of the surgical patients. A convenient sample consisted of sixty-four patients receiving the surgery at a university hospital in the Bangkok metropolitan area. Preoperative body mass index was measured from same-day weight and height. Mean arterial pressure, duration of the position, and end-tidal carbon dioxide (CO2) were measured during intra-operation. IOP was measured at two discrete time points: pre and post operation. The data were analyzed by Wilcoxon signed rank test and Spearman rank correlation. The results revealed that the pre-post IOP medians were statistically significant difference at p<0.001 (18 and 19 mmHg, quartile range. = 15 - 20 and 17 - 22 mmHg, respectively). Only the duration of the position and mean arterial pressure were significantly positively correlated with the intraocular pressure change at small effect sizes. (rs = 0.24 and 0.16, p < 0.01 and 0.05, respectively).
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