Prone Position in Percutaneous Nephrolithotomyand Postoperative Visual Loss

Urology Journal

关键词: intraocular pressure;    percutaneous nephrolithotomy;    prone position;    vision acuity;   

DOI  :  

来源: DOAJ

【 摘 要 】

Purpose: To study the simultaneous effects of prone position and anesthesiaon intraocular pressure (IOP) and the time impact on post anesthesia visualloss development in percutaneous nephrolithotomy (PCNL).Materials and Methods: Twenty patients who were candidates for PCNLwere recruited in this study. Intraocular pressure was measured in fiveoccasions:1. Base line; 2. Ten minutes after anesthesia (Supine-I); 3. Ten minutesafter position change to prone (Prone-I); 4. At the end of the operation(Prone-II); and 5. Ten minutes after position change to supine(Supine-II).The data were analyzed by SPSS software using repeated measures ANOVAand paired t test.Results: The participants consisted of 17 (85%) men and 3 (15%) women,with the mean age of 44 years. The duration of the prone position was79.75 ± 22.73 minutes. Intraocular pressure changed significantly in fivepositions (P = .000). It was lower in supine-I than baseline, higher in prone-Ithan base line and supine-I, lower in supine-II than prone-II, and highest inprone-II (P = .000). There was a linear relationship between IOP and proneposition duration (r = 0.67; P = .001).Conclusion: Intraocular pressure dropped significantly after anesthesia andincreased in prone position. There was a linear relationship between IOPrise and the prone position duration, doubled within two hours. Therefore,in PCNL carried out in prone position, it is recommended to observe safetymeasures and necessary precautions for IOP rise and possible post anesthesiavisual loss, particularly in glaucoma.

【 授权许可】

Unknown