Arm–leg coordination in recreational and competitive breaststroke swimmers

The aims of this study were to assess the durations of the different arm and leg stroke phases (propulsion, glide, and recovery) and the temporal arm–leg gaps between 12 competitive and 12 recreational breaststroke swimmers. The mean ages and best times for a 50-m breaststroke were, respectively, (recreational: 16.9 ± 1.6 y; 49.55 ± 3.38 s; competitive: 16.2 ± 1.5 y; 33.85 ± 1.96 s). Each swimmer was required to swim 2 × 25-m breaststroke at two different paces (slow and sprint) while being videotaped by two underwater cameras (frontal and lateral views). At the same given speed, recreational swimmers used no glide phase which increased the relative contribution of their recovery and propulsive phases. This was mainly caused by the superposition of their leg extension and the second part of their arm recovery, indicating a technique with no glide time between the arm recovery and the leg extension. In terms of phase duration, the recreational swimmers spent more time in arm recovery and in propulsive phases. Furthermore, it was observed that for a comparable increase of swimming speed (recreational: 23.3%, competitive: 22.6%), competitors switched from a glide to an overlapped coordination while recreational swimmers adopted an overlapped technique whatever the swimming speed. As a result, the relative time spent in propulsive phases did not change in the recreational group, but increased by 27.2% in the competitive one. In a swimming developmental program, particular emphasis should be put on arm–leg coordination drills, when considering the breaststroke.     

In situ methotrexate injection for treatment of recurrent endometriotic cysts

OBJECTIVE: Ovarian endometrioma recurrence is frequent. Conventional treatment of ovarian endometrioma is by surgical cystectomy. We proposed an alternative medical treatment for recurrent ovarian endometrioma: cyst aspiration followed by in situ methotrexate injection. STUDY DESIGN: From January 2002 to May 2003, 14 patients with recurrent homolateral ovarian endometrioma underwent transvaginal ultrasound guided cyst puncture and aspiration followed by methotrexate injection, whilst under general anasthesia. Recurrence rate during follow up was evaluated. RESULTS: No complication was reported. After a mean follow up of 20+/-5 month (min: 13, max: 29), four recurrences were diagnosed (28.6%). Two asymptomatic recurrences were not treated and two painful recurrences underwent a second cyst drainage with methotrexate injection. CONCLUSIONS: In situ methotrexate injection is a simple, effective and an interesting alternative to surgical treatment in women with recurrent homolateral ovarian endometrioma.     

Influence of the Delta Variant and Vaccination on the SARS-CoV-2 Viral Load

Studies comparing SARS-CoV-2 nasopharyngeal (NP) viral load (VL) according to virus variant and host vaccination status have yielded inconsistent results. We conducted a single center prospective study between July and September 2021 at the drive-through testing center of the Toulouse University Hospital. We compared the NP VL of 3775 patients infected by the Delta (n = 3637) and Alpha (n = 138) variants, respectively. Patient’s symptoms and vaccination status (2619 unvaccinated, 636 one dose and 520 two doses) were recorded. SARS-CoV-2 RNA testing and variant screening were assessed by using Thermo Fisher^® TaqPath™ COVID-19 and ID solutions^® ID™ SARS-CoV-2/VOC evolution Pentaplex assays. Delta SARS-CoV-2 infections were associated with higher VL than Alpha (coef = 0.68; p ≤ 0.01) independently of patient’s vaccination status, symptoms, age and sex. This difference was higher for patients diagnosed late after symptom onset (coef = 0.88; p = 0.01) than for those diagnosed early (coef = 0.43; p = 0.03). Infections in vaccinated patients were associated with lower VL (coef = −0.18; p ≤ 0.01) independently of virus variant, symptom, age and sex. Our results suggest that Delta infections could lead to higher VL and for a longer period compared to Alpha infections. By effectively reducing the NP VL, vaccination could allow for limiting viral spread, even with the Delta variant.     

Hysteroscopic tubal sterilization (essure) in women with an intrauterine device

STUDY OBJECTIVE: To evaluate the feasibility and effectiveness of hysteroscopic tubal sterilization in women with an intrauterine device (IUD). DESIGN: Prospective observational study (Canadian Task Force classification II-2). SETTING: University hospital. PATIENTS: From January 2005 through January 2006, all women with an IUD who came for a hysteroscopic tubal sterilization consultation were selected to participate. INTERVENTIONS: Hysteroscopic tubal sterilization in women with IUD. MEASUREMENTS AND MAIN RESULTS: Feasibility of the procedure, localization of microinserts, and tubal occlusion evaluated by hysterography. Hysteroscopic tubal sterilization was performed in 6 patients. Hysterography showed correct placement of microinserts and bilateral tubal occlusion in all patients. CONCLUSION: Hysteroscopic tubal sterilization in women with an IUD appears to be a feasible and effective procedure.     

Endovascular aortic arch repair with a pre-cannulated double-fenestrated physician-modified stent graft: a benchtop experiment

 Open in a separate windowOBJECTIVESThe critical step in total endovascular aortic arch repair is to ensure alignment of fenestrations with, and thus maintenance of flow to, supra-aortic trunks. This experimental study evaluates the feasibility and accuracy of a double-fenestrated physician-modified endovascular graft [single common large fenestration for the brachiocephalic trunk and left common carotid artery and a distal small fenestration for left subclavian artery (LSA) with a preloaded guidewire for the LSA] for total endovascular aortic arch repair.METHODSEight fresh human cadaveric thoracic aortas were harvested. Thoracic endografts with a physician-modified double fenestration were deployed for total endovascular aortic arch repair in a bench test model. A guidewire was preloaded through the distal fenestration for the LSA. All experiments were undertaken in a hybrid room under fluoroscopic guidance with subsequent angioscopy and open evaluation for assessment.RESULTSMean aortic diameter in zone 0 was 31.3 ± 3.33 mm. Mean duration for stent graft modification was 20.1 ± 5.8 min. Mean duration of the procedure was 24 ± 8.6 min. The Medtronic Valiant Captivia stent graft was used in 6 and the Cook Alpha Zenith thoracic stent graft in 2 cases. LSA catheterization was technically successful with supra-aortic trunk patency in 100% of cases.CONCLUSIONSThe use of a double-fenestrated stent graft with a preloaded guidewire appears to be a useful technical addition to facilitate easy and correct alignment of stent graft fenestrations with supra-aortic trunk origins.