Day Case GreenLight Laser Photoselective Vaporisation of the Prostate (GL-PVP)
Bibliographic record
Abstract
Background and Objective In recent years, GreenLight laser photoselective vaporisation of the prostate (GL-PVP) has emerged as the primary ablative surgical treatment option for symptomatic bladder outlet obstruction (BOO) secondary to benign prostatic enlargement (BPE). Unlike the reference procedure, monopolar-transurethral resection of the prostate (M-TURP), GL-PVP can be performed as a day case. As waiting list pressures continue to burden health boards across the UK, exacerbated by the COVID-19 pandemic, enhanced access to day case surgery to optimise patient flow is now of paramount importance. We evaluated the safety and feasibility of day case GL-PVP at our high-volume UK centre and identified predictors of a postoperative overnight stay. Material and Methods We performed a retrospective observational cohort study of all patients who underwent primary GL-PVP at a single institution between October 2016 and June 2021. All procedures were performed utilising the 180W GreenLight XPS™ laser therapy system. Various clinical, operative and functional data were collated, and outcomes were compared between patients who underwent day case surgery and those admitted overnight postoperatively. Results In all, 538 patients underwent GL-PVP during the study period. Median patient age was 72 (interquartile range (IQR) 66–77), and median prostate volume was 62.5cc (IQR 45–90). Five hundred nineteen patients (96.5%) were discharged within 23 hours of admission, and 366 patients (68.0%) were managed as a true day case. Operative and functional outcomes were comparable between patients managed as a day case and those admitted overnight. There was higher patient-reported satisfaction and a lower rate of early hospital readmission in the day-case group. On univariate logistic regression analysis, patients aged ≥80 years (Odds Ratio 2.64 [95% Confidence Interval 1.65– 4.24], p = < 0.001), those with American Society of Anaesthesiologists (ASA) physical status classification score ≥3 (OR 1.92 [95% CI 1.33–2.78], p = < 0.001), those with prostate volume ≥80cc (OR 1.62 [95% CI 1.00–2.61], p = 0.05) and those in whom the operation time ≥60 minutes (OR 1.66 [95% CI 1.10–2.52], p = 0.02) were more likely to be admitted overnight following GL-PVP. On multivariate logistic regression analysis, age ≥80 (OR 2.64 [95% CI 1.47–4.73], p = 0.001) and ASA score ≥3 (OR 2.03 [95% CI 1.28–3.22], p = 0.003) remained predictive variables of an overnight stay. Conclusion From our observations of a large cohort of patients over a study period of almost five years, day case GLPVP is a feasible concept and does not appear to compromise perioperative outcomes. With appropriate service redesign and optimisation of postoperative patient pathways, day case GL-PVP can be established in other centres and may have a role in alleviating waiting list pressures.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".