Ventricular divergence correlates with epicardial wavebreaks and predicts ventricular arrhythmia in isolated rabbit hearts during therapeutic hypothermia

INTRODUCTION: High beat-to-beat morphological variation (divergence) on the ventricular electrogram during programmed ventricular stimulation (PVS) is associated with increased risk of ventricular fibrillation (VF), with unclear mechanisms. We hypothesized that ventricular divergence is associated with epicardial wavebreaks during PVS, and that it predicts VF occurrence. METHOD AND RESULTS: Langendorff-perfused rabbit hearts (n = 10) underwent 30-min therapeutic hypothermia (TH, 30°C), followed by a 20-min treatment with rotigaptide (300 nM), a gap junction modifier. VF inducibility was tested using burst ventricular pacing at the shortest pacing cycle length achieving 1:1 ventricular capture. Pseudo-ECG (p-ECG) and epicardial activation maps were simultaneously recorded for divergence and wavebreaks analysis, respectively. A total of 112 optical and p-ECG recordings (62 at TH, 50 at TH treated with rotigaptide) were analyzed. Adding rotigaptide reduced ventricular divergence, from 0.13±0.10 at TH to 0.09±0.07 (p = 0.018). Similarly, rotigaptide reduced the number of epicardial wavebreaks, from 0.59±0.73 at TH to 0.30±0.49 (p = 0.036). VF inducibility decreased, from 48±31% at TH to 22±32% after rotigaptide infusion (p = 0.032). Linear regression models showed that ventricular divergence correlated with epicardial wavebreaks during TH (p<0.001). CONCLUSION: Ventricular divergence correlated with, and might be predictive of epicardial wavebreaks during PVS at TH. Rotigaptide decreased both the ventricular divergence and epicardial wavebreaks, and reduced the probability of pacing-induced VF during TH

Single port access laparoscopic subtotal hysterectomy using contained manual morcellation: Experience from a tertiary referral center in Taiwan

Objective: To describe the surgical outcomes of single port access laparoscopic subtotal hysterectomy (LSH) using in-bag manual morcellation and evaluate the feasibility of this procedure. Materials and Methods: Thirty patients with symptomatic leiomyoma or adenomyosis were enrolled. A 2-cm transverse incision was made at the umbilicus and single port apparatus (LagiPort) was applied. After dissection of vesicouterine peritoneum from the uterus, the uterine ligaments and vessels were secured and transected by Gyrus PK cutting forceps. Cervical amputation at the level of internal os was made by SupraLoop (Karl Storz). The uterine corpus was put into an Endobag before morcellation. The opening of Endobag was exteriorized from the umbilical incision and the uterine corpus was removed in a contained manner by manual morcellation with a scalpel. Results: This procedure was successfully performed on all patients. Neither laparotomic conversion nor additional port was needed. The mean age and mean BMI of the patients were 43.63 years and 24.02 kg/㎡. The mean operative time was 148 min and the estimated blood loss in most patients was less than 150 ml. The median weight of uterine corpus was 214 g. No intraoperative complications occurred in any patient. One patient was diagnosed with unexpected endometrioid adenocarcinoma FIGO grade 1 postoperatively. One patient reported cyclic bleeding and underwent a transvaginal trachelectomy 17 months later. Conclusion: Single port access LSH using contained manual morcellation represents a safe and feasible alternative to conventional LSH using open power morcellation

First-trimester abortion complicated with placenta accreta: A systematic review

Placenta accreta is a potentially life-threatening condition that may complicate a first-trimester abortion in rare occasions, and it can be difficult to recognize. We reviewed the literature in PubMed-indexed English journals through August 2018 for first-trimester postabortal placenta accreta, after which 19 articles and 23 case reports were included. The risk factors for the development of abnormal placentation are previous cesarean section (87%), previous history of uterine curettage (43.5%), and previous history of surgical evacuation of a retained placenta (4.3%). Ten patients (43.5%) had an advanced age (≧35 years). Most patients clinically presented with vaginal bleeding, ranging from intermittent or irregular bleeding, persistent bleeding, and profuse or massive bleeding. The onset of symptoms might be during the intra- or immediate postoperative period. Some patients had delayed symptoms 1 week to 2 years postoperatively. Conservative management may be attempted as the primary rescue, including uterine artery embolization (UAE), transcatheter arterial chemoembolization (TACE) with dactinomycin, and laparoscopic hysterotomy with placental tissue removal. However, most reports in the literature suggested either abdominal or laparoscopic hysterectomy as the definitive treatment for first-trimester postabortal placenta accreta. High index of clinical suspicion with anticipation of placenta accreta in early pregnancy is highly essential for timely diagnosis, providing the physician better opportunities to promptly manage this emergent condition and improve outcomes. Keywords: First-trimester abortion, First-trimester pregnancy, Placenta accret

Effect of dienogest on serum anti-Mullerian hormone level after laparoscopic cystectomy of ovarian endometrioma

Objective: This comparative study aimed to evaluate the effect of postoperative dienogest treatment on serum anti-Mullerian hormone (AMH) levels in patients undergoing laparoscopic cystectomy of ovarian endometriomas. Materials and methods: A total of 71 patients with ovarian endometriomas treated at our department were enrolled. After surgery, 54 patients received oral dienogest 2 mg daily continuously for 6 months (dienogest group). The other 17 patients did not receive postoperative medical treatment (control group). Serum AMH levels were measured before surgery, at 3-month period after surgery, and at the end of 6-month follow-up period. Serial changes of AMH levels were compared between the two groups. Results: The age, endometrioma size, and serum AMH level before surgery were comparable between the dienogest group and the control group. The AMH levels decreased significantly at 3-month period after surgery in the dienogest group (a decrease of 65.5%; p < 0.001) and the control group (a decrease of 64.8%; p = 0.018). The AMH levels increased gradually from the nadir at 3-month period after surgery and recovered partially at the end of 6-month follow-up period in both groups. There were no statistically significant differences in the rate of reduction of serum AMH levels between the two groups (p = 0.707). Conclusion: Laparoscopic cystectomy of ovarian endometrioma causes a significant decrease in serum AMH levels. The rates of reduction of AMH levels are similar regardless of dienogest treatment. Postoperative dienogest treatment for 6 months has no rescue effect on serum AMH levels in these patients