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find Keyword "prospective randomized controlled study" 2 results
  • Clinical efficacy of total thoracoscopic mitral valvuloplasty with chordal replacement and quadrangular resection for mitral regurgitation: A prospective randomized controlled study

    Objective To explore the safety, effectiveness, and mid-term efficacy of total thoracoscopic mitral valvuloplasty (MVP) with chordal replacement (CR) and quadrangular resection (QR) for the treatment of mitral regurgitation (MR), and to provide reference for guiding the development and selection of clinical diagnosis and treatment methods for MR patients. Methods A prospective randomized controlled study was performed to collect patients with MR who underwent MVP at the Department of Cardiovascular Surgery, Leshan People's Hospital from January 2021 to March 2022. They were randomly divided into a CR group and a QR group by using a random number table, and were followed up for 12 months after the operation. The medical history, perioperative data and adverse cardiac endpoint events during the follow-up period were collected. The differences in surgical efficacy between the two groups were evaluated and compared, and the Kaplan-Meier method was used to compare the differences in survival rates between the two groups of patients. Results A total of 100 patients were enrolled. There were 46 patients in the CR group, including 27 males and 19 females with an average age of 49.50±9.23 years; there were 46 patients in the QR group, including 24 males and 22 females with an average age of 49.91±11.48 years. The aortic occlusion time in the CR group was longer than that in the QR group (P<0.05). Other surgical indicators, including total surgical time, extracorporeal circulation time, ventilator-assisted time, ICU hospitalization time, size of the valve ring, concomitant surgery during the same period, and the incidence of perioperative complications were not statistically different between the two groups (P>0.05). The left atrium diameter, left ventricular end-diastolic diameter, left ventricular end-diastolic volume, left ventricular end-systolic volume, and left ventricular ejection fraction (LVEF) of the two groups before discharge after the surgery were significantly improved compared to those before surgery (P<0.05). There was a statistical difference in LVEF between the two groups before discharge after the surgery (P<0.05). There was no statistical difference in clinical efficacy between the two groups (P>0.05). Kaplan-Meier analysis showed that the overall incidence of exemption from mild and above mitral regurgitation 12 months after the surgery in the CR group and QR group was 84.8% and 89.1%, respectively. According to the log-rank test, there was no statistical difference in the overall survival curve between the two groups (χ2=0.356, P=0.551). Conclusion CR and QR are both safe and effective methods for the treatment of simple posterior MR.

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  • Effect of different degrees of wound eversion sutures on scar formation at donor site of anterolateral thigh flaps: A prospective randomized controlled study

    Objective To investigate the effect of different degrees of wound eversion on scar formation at the donor site of anterolateral thigh flaps by a prospective clinical randomized controlled study. MethodsAccording to the degree of wound eversion, the clinical trial was designed with groups of non-eversion (group A), eversion of 0.5 cm (group B), and eversion of 1.0 cm (group C). Patients who underwent anterolateral femoral flap transplantation between September 2021 and March 2023 were collected as study subjects, and a total of 36 patients were included according to the selection criteria. After resected the anterolateral thigh flaps during operation, the wound at donor site of each patient was divided into two equal incisions, and the random number table method was used to group them (n=24) and perform corresponding treatments. Thirty of these patients completed follow-up and were included in the final study (group A n=18, group B n=23, and group C n=29). There were 26 males and 4 females with a median age of 53 years (range, 35-62 years). The body mass index was 17.88-29.18 kg/m2 (mean, 23.09 kg/m2). There was no significant difference in the age and body mass index between groups (P>0.05). The incision healing and scar quality of three groups were compared, as well as the Patient and Observer Scar Assessment Scale (POSAS) score [including the observer component of the POSAS (OSAS) and the patient component of the POSAS (PSAS)], Vancouver Scar Scale (VSS) score, scar width, and patient satisfaction score [visual analogue scale (VAS) score]. Results In group C, 1 case had poor healing of the incision after operation, which healed after debridement and dressing change; 1 case had incision necrosis at 3 months after operation, which healed by second intention after active dressing change and suturing again. The other incisions in all groups healed by first intention. At 6 months after operation, the PSAS, OSAS, and patient satisfaction scores were the lowest in group B, followed by group A, and the highest in group C. The differences between the groups were significant (P<0.05). There was no significant difference between the groups in the VSS scores and scar widths (P>0.05). ConclusionModerate everted closure may reduce the formation of hypertrophic scars at the incision site of the anterior lateral thigh flap to a certain extent.

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