Prostate Artery Embolization - Mid to Long-term Outcomes in 1075 Patients.

Background: To assess the mid to long-term safety and efficacy of Prostatic Artery Embolization (PAE) at a single-center, cohort of 1075 patients.

Methods: This IRB-approved retrospective-study included patients with moderate-to-severe Lower-Urinary-Tract-Symptoms(LUTS) or urinary-retention who underwent PAE from January-2014 to July-2023. Patients were assessed at 1, 3, 6, and 12-months post-PAE and yearly thereafter. International-Prostate-Symptom-Score(IPSS), Quality-of-Life(QoL) score, International-Index of Erectile-Function-5 score(IIEF-5), Prostate-Specific-Antigen(PSA), Prostate-volume(PV), Post-void-Residual(PVR), Benign-Prostatic-Obstruction(BPO)-medication usage, urinary-catheter status, and further prostate-interventions were assessed. Adverse-events were recorded and classified using the Society of Interventional-Radiology Adverse-Events(SIR-AE) severity classification.

Results: The mean follow-up was 458.4±559.5 days. Mean age was 70.4±9.0 years, median(IQR) prostate-volume was 107gm(76-150), median pre-procedure IPSS, QoL, IIEF-5, and PSA were 23(18-28), 5(4-6), 17(10-21), and 4.7(2.6-8), respectively. In the LUTS subgroup, at 1-3, 6-12, and 48-60 months, the median-IPSS was 7(4-12, p<0.001), 6(3-11, p<0.001), and 9(4-15, p<0.001). The QoL was 2(1-2, p<0.001), 1(0-2, p<0.001), 2(0-3, p<0.001) at the same time-points. 119(94%) out of 126-patients in the retention cohort were catheter-free at the 3-month follow-up. Ninety-patients(16% of re-intervention eligible patients) required a second prostatic-intervention upto 60-months post-PAE. 65.5% of patients post-PAE were BPO-medication-free at 1-year. 7 patients (0.65%) had SIR-AE severity-Severe: transient ischemic-attacks:3, Urosepsis-2 (treated in inpatient-setting with IV-antibiotics), prostate-sloughing-2(needing TURP). All adverse events resolved without sequelae.

Conclusion: In a large cohort with long-term longitudinal follow-up, PAE shows significant, sustained long-term relief of LUTS, improved QoL, low re-intervention rate, and high BPO medication-free rates. 94% of catheter-dependent patients at baseline were catheter-free at 3-months.