目的探讨腹腔镜超声下精索静脉高位结扎术效果。方法回顾性分析武警山东总队医院2018-10至2020-10收治的32例双侧精索静脉曲张的患者术前、术后临床资料,年龄19~36岁,平均(29.2±2.2)岁,双侧曲张程度均为Ⅱ~Ⅲ度,B超探及曲张静脉直...目的探讨腹腔镜超声下精索静脉高位结扎术效果。方法回顾性分析武警山东总队医院2018-10至2020-10收治的32例双侧精索静脉曲张的患者术前、术后临床资料,年龄19~36岁,平均(29.2±2.2)岁,双侧曲张程度均为Ⅱ~Ⅲ度,B超探及曲张静脉直径2.2~4.6 cm,其中至少一侧曲张静脉直径>3.0 cm 23例。合并少弱精患者13例,术前彩超均排除继发性精索静脉曲张可能。行腹腔镜双侧精索静脉高位结扎术,术中配合腹腔镜超声探查,保留动脉后行高选择性精索内静脉结扎术。记录所有患者手术相关指标、精子相关指标、临床症状缓解率、术后并发症发生情况。结果本组32例均顺利完成手术,术中均无严重出血及周围脏器损伤,31例术中完整保留双侧精索内动脉,1例术中分离一侧动脉时出现出血,遂行集束结扎,仅保留另一侧动脉。手术时间为(72.53±5.07)min;住院时间为(4.06±0.68)d。患者均于术后6个月门诊随访,阴囊胀痛均有不同程度缓解,均无复发,均未发现睾丸萎缩。13例少弱精患者术前精子密度(14.38±1.26)×10;/ml,(a+b)级精子百分比(21.34±2.12)%。术后6个月,均复查精液常规,精子密度(26.15±2.45)×10;/ml,(a+b)级精子百分比(35.17±3.87)%。术后精子密度以及(a+b)级精子百分比均较术前显著提高(P<0.001)。结论腹腔镜精索静脉高位结扎术配合腹腔镜超声,治疗双侧精索静脉曲张,可有效识别并保留精索内动脉,行高选择性精索内静脉结扎术,术后症状及精液质量改善效果明显。展开更多
In this paper, the boundary control problem of a distributed parameter system described by the Schrodinger equation posed on finite interval α≤x≤β:{ iyt +yzz+|y|^2y = 0, y(α, t) = h1 (t), y(β, t)=h2...In this paper, the boundary control problem of a distributed parameter system described by the Schrodinger equation posed on finite interval α≤x≤β:{ iyt +yzz+|y|^2y = 0, y(α, t) = h1 (t), y(β, t)=h2(t) for t〉0 (S)is considered. It is shown that by choosing appropriate control inputs (hi), (j = 1, 2) one can always guide the system (S) from a given initial state φ∈H^S(α,β), (s ∈ R) to a terminal state φ∈ H^s(α,β), in the time period [0, T]. The exact boundary controllability is obtained by considering a related initial value control problem of SchrSdinger equation posed on the whole line R. The discovered smoothing properties of Schrodinger equation have played important roles in our approach; this may be the first step to prove the results on boundary controllability of (semi-linear) nonlinear Schrodinger equation.展开更多
文摘目的探讨腹腔镜超声下精索静脉高位结扎术效果。方法回顾性分析武警山东总队医院2018-10至2020-10收治的32例双侧精索静脉曲张的患者术前、术后临床资料,年龄19~36岁,平均(29.2±2.2)岁,双侧曲张程度均为Ⅱ~Ⅲ度,B超探及曲张静脉直径2.2~4.6 cm,其中至少一侧曲张静脉直径>3.0 cm 23例。合并少弱精患者13例,术前彩超均排除继发性精索静脉曲张可能。行腹腔镜双侧精索静脉高位结扎术,术中配合腹腔镜超声探查,保留动脉后行高选择性精索内静脉结扎术。记录所有患者手术相关指标、精子相关指标、临床症状缓解率、术后并发症发生情况。结果本组32例均顺利完成手术,术中均无严重出血及周围脏器损伤,31例术中完整保留双侧精索内动脉,1例术中分离一侧动脉时出现出血,遂行集束结扎,仅保留另一侧动脉。手术时间为(72.53±5.07)min;住院时间为(4.06±0.68)d。患者均于术后6个月门诊随访,阴囊胀痛均有不同程度缓解,均无复发,均未发现睾丸萎缩。13例少弱精患者术前精子密度(14.38±1.26)×10;/ml,(a+b)级精子百分比(21.34±2.12)%。术后6个月,均复查精液常规,精子密度(26.15±2.45)×10;/ml,(a+b)级精子百分比(35.17±3.87)%。术后精子密度以及(a+b)级精子百分比均较术前显著提高(P<0.001)。结论腹腔镜精索静脉高位结扎术配合腹腔镜超声,治疗双侧精索静脉曲张,可有效识别并保留精索内动脉,行高选择性精索内静脉结扎术,术后症状及精液质量改善效果明显。
文摘In this paper, the boundary control problem of a distributed parameter system described by the Schrodinger equation posed on finite interval α≤x≤β:{ iyt +yzz+|y|^2y = 0, y(α, t) = h1 (t), y(β, t)=h2(t) for t〉0 (S)is considered. It is shown that by choosing appropriate control inputs (hi), (j = 1, 2) one can always guide the system (S) from a given initial state φ∈H^S(α,β), (s ∈ R) to a terminal state φ∈ H^s(α,β), in the time period [0, T]. The exact boundary controllability is obtained by considering a related initial value control problem of SchrSdinger equation posed on the whole line R. The discovered smoothing properties of Schrodinger equation have played important roles in our approach; this may be the first step to prove the results on boundary controllability of (semi-linear) nonlinear Schrodinger equation.