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find Keyword "技术改良" 3 results
  • 经右胸前外侧切口径路行再次三尖瓣手术的技术改良

    目的 [HTSS]探讨经右胸前外侧切口径路行再次三尖瓣手术的手术技术改良方法,以提高手术疗效。 方法 1997年1月至2009年6月,第二军医大学长海医院对32例左心瓣膜置换术后重度三尖瓣关闭不全患者经右胸前外侧切口径路行再次三尖瓣手术,其中男23例,女9例;年龄43~62岁 (49.5±8.7岁)。行三尖瓣置换术29例,三尖瓣成形术3例。手术中均不做心包粘连分解或上、下腔静脉套带;上腔静脉采用带气囊直插管;下腔静脉仅做引流而不阻断;三尖瓣置换的人工瓣膜置于冠状静脉窦口下方。 结果 手术时间152±38 min,体外循环时间45±13 min;术中出血量272±59 ml;术后24 h胸腔引流量420±93 ml 。术后早期死亡4例(12.5%),其中死于肾功能不全1例,呼吸功能不全2例,多器官功能衰竭1例。随访28例,随访时间3~152个月,随访期间死亡3例,生存患者心功能分级(NYHA)Ⅰ级11例,Ⅱ级13例,Ⅲ级1例。 结论 再次三尖瓣手术的改良技术简化了操作、减少出血、缩短了手术时间。

    Release date:2016-08-30 05:57 Export PDF Favorites Scan
  • A technique analysis for dissection of anterolateral thigh perforator flap

    Objective To improve the harvesting techniques of anterolateral thigh perforator flap, and to reduce the operation time. Methods Between January 2008 and June 2015, 400 patients undergoing repair with anterolateral thigh perforator flap were included to analyze the technical factors, including 370 cases (92.5%) obtaining primary healing and 30 cases (7.5%) receiving re-exploration. Combined with the literature, a modified flap dissection was made: reverse tracing and sequential dissection of the descending branch of the lateral circumflex femoral artery. Between June 2015 and June 2016, the modified free anterolateral thigh perforator flap was used in 100 cases. Of 100 cases, 76 were male and 24 were female, aged from 11 to 71 years (mean, 35.6 years). The wound size ranged from 8 cm×5 cm to 23 cm×9 cm. The time between injury and surgery ranged from 5 to 31 days (mean, 14.3 days). Results The operation time of modified flap dissection was reduced to (30.1±19.3) minutes from (85.0±30.2) minutes (unmodified flap dissection). Postoperatively, 94 flaps survived uneventfully, and incision healed by first intention. Six flaps received re-exploration surgery because of vascular compromise; the flap survived after removal of thrombosis in 4 cases of vein thrombosis; the flap necrosed in 2 cases of vein and artery thrombosis, and skin grafting was performed. Ninety-four patients whose flaps survived were followed up 3-12 months (mean, 6.3 months); the flaps had good color and appearance, and second stage operation was performed to make the flap thinner in 21 cases. Conclusion Improved harvesting technique of free anterolageral thigh perforator flap could decrease surgery time and difficulty in dissection.

    Release date:2017-02-15 09:26 Export PDF Favorites Scan
  • Clinical study of modified technique to reduce partial necrosis rate of distally pedicled sural flap

    ObjectiveTo investigate whether the technical modifications regarding the risk factors related to the partial necrosis of the distally pedicled sural flap could reduce the partial necrosis rate of the flap.MethodsA clinical data of 254 patients (256 sites) (modified group), who used modified technique to design and cut distally pedicled sural flaps to repair the distal soft tissue defects of the lower limbs between April 2010 and December 2019, was retrospectively analyzed. Between April 2001 and March 2010, 175 patients (179 sites) (control group) who used the traditional method to design and cut the skin flap to repair the distal soft tissue defects of the lower limbs were compared. Various technical modifications were used to lower the top-edge of the flap, reduce the length-width ratio (LWR) of the flap and width of the skin island. There was no significant difference in gender, age, etiology, duration from injury to operation, site and area of the soft tissue defect between groups (P>0.05). The length and width of the skin island and adipofascial pedicle, the total length of the flap and LWR, and the pivot point position were measured and recorded. The top-edge of the flap was determined according to the division of 9 zones in the posterior aspect of the lower limb. The occurrence of partial necrosis of the flap and the success rate of defect reconstruction were observed postoperatively.ResultsThere was no significant difference in the length and width of the skin island, the length of the adipofascial pedicle, total length and LWR of the flap, and pivot point position of the flap between groups (P>0.05). The width of the adipofasical pedicle in modified group was significant higher than that in control group (t=–2.019, P=0.044). The top-edge of 32 flaps (17.88%) in control group and 31 flaps (12.11%) in modified group were located at the 9th zone; the constituent ratio of the LWR more than 5∶1 in modified group (42.58%, 109/256) was higher than that in control group (42.46%, 76/179); and the constituent ratio of width of skin island more than 8 cm in control group (59.78%, 107/179) was higher than that in modified group (57.42%, 147/256). There was no significant difference in the above indicators between groups (P>0.05). In control group, 155 flaps (86.59%) survived completely, 24 flaps (13.41%) exhibited partial necrosis. Among them, 21 wounds healed after symptomatic treatments, 3 cases were amputated. The success rate of defects reconstruction was 98.32% (176/179). In modified group, 241 flaps (94.14%) survived completely, 15 flaps (5.86%) exhibited partial necrosis. Among them, 14 wounds healed after symptomatic treatments, 1 case was amputated. The success rate of defect reconstruction was 99.61% (255/256). The partial necrosis rate in modified group was significantly lower than that in control group (χ2=7.354, P=0.007). There was no significant difference in the success rate between the two groups (P=0.310). All patients in both groups were followed up 1 to 131 months (median, 9.5 months). All wounds in the donor and recipient sites healed well.ConclusionThe partial necrosis rate of the distally based sural flap can be decreased effectively by applying personalized modified technical for specific patients.

    Release date:2021-06-30 03:55 Export PDF Favorites Scan
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