Search

The authors have requested that this preprint be removed from Research Square.

ObjectiveThis study was performed to compare the clinical outcomes, advantages, and disadvantages of laparoscopic myomectomy (LM) and transcervical resection of myoma (TCRM) in the treatment of type II submucous myoma.MethodsIn total, 136 patients with type II submucous myoma with a tumour diameter of 4 to 5 cm were randomly assigned to the hysteroscopy group or laparoscopy group.ResultsThe operative duration was shorter and the intraoperative bleeding volume was lower in the hysteroscopy than laparoscopy group. The success rate of the single-stage operation was obviously higher in the laparoscopy than hysteroscopy group. The duration of postoperative antibiotic use and the length of hospital stay were shorter in the hysteroscopy than laparoscopy group. The time to complete healing of the muscle layer was shorter in the hysteroscopy than laparoscopy group. The rate of intraoperative complications was lower in the hysteroscopy than laparoscopy group.ConclusionBoth hysteroscopic and laparoscopic surgery have beneficial effects in the treatment of type II submucous myoma. Hysteroscopic surgery has the advantages of a short operative duration, low intraoperative bleeding volume, fast postoperative recovery, and high quality of life. Laparoscopic surgery involves many intraoperative complications and slow recovery of ovarian function.

Objectives: Large sample and high-quality evidence to evaluate the preliminary safety of the mobilizations and massage for cervical vertigo are not yet available. Thus, the present study aimed to i...

The equilibrium geometries, total energies, and vibrational frequencies of anions X2Y2 − (X = C, Si, Ge and Y = N, P, As) are theoretically investigated with density functional theory (DFT) method. Our calculation shows that for C2N2 − species, the D 2h isomer is the most stable four-membered structure, and for other species the C 2v isomer in which two X atoms are contrapuntal is the most stable structure at the B3LYP/6-311 +G* level. Wiberg bond index (WBI) and negative nucleus-independent chemical shift (NICS) value indicate the existence of delocalization in stable X2Y2 − structures. A detailed molecular orbital (MO) analysis further reveals that stable isomers of these species have strongly aromatic character, which strengthens the structural stability and makes them closely connected with the concept of aromaticity.

The equilibrium geometries, total energies and harmonic vibrational frequencies of planar low-lying states for Si 2 BX (X = Li, K, O, S) species are investigated at B3LYP/6-311+G ∗ and B3PW91/6-311+G ∗ levels. The research results show that for Si 2 BLi, Si 2 BK and Si 2 BS species, the C 2 v isomer is the most stable planar structure, and for Si 2 BO species, the C s isomer is the most stable planar structure. Negative nucleus independent chemical shift (NICS) values indicate the existence of aromaticity in planar structures for these species. A detailed molecular orbital (MO) analysis further reveals that a delocalized π MO for two isomers of Si 2 BX (X = Li, K, O, S) strengthens the structural stability and make these species show strongly aromatic character.

Clusters XSi 2 Y (X = Al, Ga and Y = P, As) are theoretically investigated using density functional theory (DFT) methods at the B3LYP/6-311+G* and B3PW91/6-311+G* levels of theory. The calculated results showed that for AlSi 2 P AlSi 2 As and PSi 2 Ga species, the C 2 v isomer is the ground state, respectively, whereas for GaSi 2 As species, the C s isomer is the ground state. The wiberg bond index (WBI) suggested the existence of delocalization. Negative nucleus-independent chemical shift (NICS) values indicated that a strong ring current exists in two isomers of those species. A detailed molecular orbital (MO) analysis further revealed that two isomers of these species have π aromaticity, and the two delocalized π electrons does agree well with the (4 n + 2) Huckel rule, which is closely connected with the concept of the aromaticity.

Supplemental Digital Content is available in the text, Background: There is a lack of high-quality evidence supporting the use of manipulation therapy for patients with cervical radiculopathy (CR). This study aimed to evaluate the effectiveness of Shi-style cervical manipulations (SCMs) versus mechanical cervical traction (MCT) for CR. Methods: This was a randomized, open-label, controlled trial carried out at 5 hospitals in patients with CR for at least 2 weeks and neck pain. The patients received 6 treatments of SCM (n = 179) or MCT (n = 180) over 2 weeks. The primary outcome was participant-rated disability (neck disability index), measured 2 weeks after randomization. The secondary outcomes were participant-rated pain (visual analog scale) and health-related quality of life (36-Item Short Form Health Survey [SF-36]). Assessments were performed before, during, and after (2, 4, 12, and 24 weeks) intervention. Results: After 2 weeks of treatment, the SCM group showed a greater improvement in participant-rated disability compared with the control group (P = .018). The SCM group reported less disability compared with the control group (P