Objective To evaluate the efficacy and safety of 450 nm blue laser vaporization enucleation of the prostate in the treatment of benign prostatic hyperplasia(BPH)complicated with urinary retention, so as to promote its clinical application. Methods A retrospective analysis was conducted on the clinical data of 60 patients with BPH and urinary retention who underwent 450 nm blue laser vaporization enucleation of the prostate in our hospital during Feb. 2023 and Apr. 2024. All patients had urinary catheters indwelt preoperatively due to urinary retention. The perioperative indicators and complications were recorded. The maximum urinary flow rate(Qmax), postvoid residual(PVR), international prostate symptom score(IPSS), and quality of life score(QoL)were compared before surgery and 3 months after surgery. Results All procedures were completed successfully without conversion to transurethral resection of the prostate(TURP). No cases of severe intraoperative bleeding or transfusion were reported. The average operation time was(60.5±21.5)min, postoperative hemoglobin reduction(3.2±0.8)g/L, catheterization time(3.1±0.4)days, and hospital stay(3.2±0.4)days. No bladder perforation or urethral injury occurred. At 3 months postoperatively, Qmax [(19.2±4.9)mL/s vs.(3.5±2.3)mL/s], PVR [(50.8±20.1)mL vs.(369.2±163.2)mL], IPSS [(9.7±0.9)vs.(21.8±3.2)], and QoL [(1.4±0.5)vs.(4.9±0.1)]were significantly improved compared with preoperative values(P＜0.001). Urinary retention occurred in 2 patients after catheter removal on postoperative day 3, which was resolved one week after re-catheterization. Conclusion The 450 nm blue laser vaporization enucleation of the prostate is a safe and effective treatment for BPH complicated with urinary retention. It can significantly improve the short-term voiding function and quality of life with a low incidence of postoperative complications, demonstrating promising potential for clinical adoption.

Objective:To master the changes of Kashin-Beck disease and the examination and acceptance in Zhalantun City, and to provide scientific basis for formulating prevention and control strategies of Kashin-Beck disease.Methods:From 2016 to 2017, in each county under the jurisdiction of Zhalantun City, 5 townships affected by the disease were selected, 3 villages were selected from each township, and the prevalence of Kashin-Beck disease of all residential children aged 7 to 12 years who lived in the villages for more than 6 months were investigated. The clinical and X-ray diagnosis were performed according to the "Diagnosis of Kashin-Beck Disease" (WS/T 207-2010) standard, and the prevalence of Kashin-Beck disease in children aged 7 to 12 years in Zhalantun City in 2016 and 2017 were compared. In accordance with the "Key Endemic Disease Control and Elimination Evaluation Measures" ([2014]79), the condition of Kashin-Beck disease and the implementation of its prevention and control measures was assessed.Results:From 2016 to 2017, 1 697 children aged 7 to 12 years were examined, there were no clinical cases of Kashin-Beck disease and 11 cases of X-ray positive changes. Among them, 844 children were examined in 2016, the positive rate of X-ray was 0.24% (2/844), the positive rate of metaphyseal was 0.24% (2/844), and no positive changes of extremities and triad were detected. A total of 853 children were examined in 2017, the positive rate of X-ray was 1.06% (9/853), the positive rate of metaphyseal was 1.06% (9/853), and no positive changes of extremities and triad were detected. The positive rate of X-ray and metaphyseal of Kashin-Beck disease in children aged 7 - 12 years in 2017 were higher than those in 2016 (χ 2 = 4.409, 4.409, P < 0.05). All surveyed villages had reached the national elimination standard (no clinical cases for children aged 7 - 12 years, X-ray positive rate ≤3% and no cases of hand bone end changes); the organization management scores of Kashin-Beck disease prevention and treatment in Zhalantun City in 2016 and 2017 were 88 points, reaching the qualified standard ( > 85 points). Conclusion:The condition of Kashin-Beck disease in Zhalantun City has reached the standard of elimination, which lays a foundation for further comprehensive elimination of Kaschin-Beck disease in Hulunbuir City.

Objective To determine the normal value and clinical significance of the lengths and angles of both mandible and hyoid, and their relationship with cervical vertebra as well as the transverse area of the airway at the hyoid level using CT. Methods Several lines and angles on the CT images were measured in 68 normal subjects. Line A was the length between both free ends of the mandible; line B was the distance from the body of the mandible to line A; Line C was the distance from line A to the anterior aspect of the cervical vertebra. ?1 was the angle between the middle of mandible body and its two free ends. Line a was the distance between two free ends of greater horn of hyoid bone. Line b was the distance from hyoid to line a. line c was the distance from line a to the cervical vertebra ?2 was the angle between the middle of hyoid body and its two free ends. S stood for the area of the airway at the hyoid level. SPSS 11.5 statistical analysis package was used to analyze the results. Results The average and median distance/angle of various measurements were as follows: bne A was (89. 28?5. 90) mm and 88. 70 mm, line B was (62. 61?5. 78) mm and 62. 50 mm, line C was (9. 29?3. 29) mm and 4. 20 mm, ?1 was (71. 25? 6. 77)? and 71. 05? , line a was (38. 69?6. 07) mm and 39. 90 mm, line b was (28. 79?4. 37) mm and 28.50mm, line c was (1.91?3.03) mm and 1.75 mm, ?2 was (68.47?15.71)? and 66.95?.The average S was (436. 14?160. 37) mm and median was 431. 75mm2. Conclusion It's easy to measure the three lines and the two angles of mandible and hyoid. The measurement is of vital importance in the diagnosis and treatment for obstructive sleep apnea syndrome.