Do obese patients with type A aortic dissection benefit from total arch repair through a partial upper sternotomy?

Background: Minimal research has been performed regarding total arch replacement through partial upper sternotomy in patients with acute type A aortic dissection who are obese, and the safety and feasibility of this procedure need to be further investigated. The present study investigated the potential clinical advantages of using a partial upper sternotomy versus a conventional full sternotomy for total arch replacement in patients who were obese.

Methods: This was a retrospective study.

Do obese patients benefit from isolated aortic valve replacement through a partial upper sternotomy?

Objective: Controversial opinions exist for aortic valve replacement (AVR) through partial upper sternotomy in obese patients. Moreover, this study sought to investigate the potential clinical advantage of partial upper sternotomy aortic valve replacement (mini-AVR) over conventional full sternotomy aortic valve replacement (con-AVR) in obese patients.

Methods: This was a retrospective and observational study.

Extensive repair of acute type A aortic dissection through a partial upper sternotomy and using complete stent-graft replacement of the arch.

Background: Partial upper sternotomy (mini-ER) can be used in some adult cardiac surgeries but is seldom performed in the treatment of acute type A aortic dissection (AAAD). This study aimed to assess the feasibility and short-term outcomes of complete stent-graft replacement of the arch with triple-branched stent graft for AAAD through a mini-ER.

Methods: From 2015 to 2018, 254 patients with AAAD underwent complete stent-graft replacement of the arch with a triple-branched stent graft.

Biotemplate derived three dimensional nitrogen doped graphene@MnO as bifunctional material for supercapacitor and oxygen reduction reaction catalyst.

Natural diatomite with abundant pores was used as a biotemplate for the massive production of three-dimensional (3D) porous graphene by chemical vapor deposition method. Subsequent template removal and nitrogen doping treatment yield nitrogen doped 3D graphene with preserved shape and complex internal features of the diatomite. After further deposition with MnO nanosheets, the N-doped 3D graphene@MnO (N-G@MnO) hybrid exhibited excellent supercapacitor and good oxygen reduction reaction (ORR) performance.

2D-2D growth of NiFe LDH nanoflakes on montmorillonite for cationic and anionic dye adsorption performance.

NiFe layered double hydroxides nanoflakes decorated montmorillonite (MMT@NiFe LDH) was successfully prepared by a one-pot hydrothermal method. The 2D-2D growth MMT@NiFe LDH was utilized as an effective adsorbent for removal of anionic dye of methyl orange (MO) and cationic dye of methylene blue (MB). The mole ratio of Ni/Fe could quite influence the interlayer spacing, surface area per unit charge and the ultrathin hexagonal laminated morphology of NiFe LDH decorated on the surface of MMT.

Tuning Hierarchical Ferric Nanostructures-Decorated Diatomite for Supercapacitors.

FeOOH nanosheets on porous diatomite have been successfully prepared by a facile two-step hydrothermal approach for supercapacitors, and then α-FeO and γ-FeO nanostructures are obtained via calcination under different atmospheres and temperatures. The morphologies and structures of all the samples are investigated in detail to make the hierarchical architecture clear. Besides, systemic tests are carried out in 1 M NaSO electrolyte to characterize the electrochemical properties of these materials.

Evaluation of MnO-templated iron oxide-coated diatomites for their catalytic performance in heterogeneous photo Fenton-like system.

Herein, iron oxide-coated diatomites were prepared through hydrothermal synthesis and sacrificial template redox etching reaction. The microstructure characterization results revealed that the FeO nanorods were uniformly distributed on the surface of diatomite. The effects of diverse synthetic parameters on morphology of as-synthesized FeO@diatomite were investigated.

Synthesis of MnO nanosheets on montmorillonite for oxidative degradation and adsorption of methylene blue.

In this research, MnO nanosheets on montmorillonite (MnO nanosheets@MMt) was synthesized by one-pot hydrothermal method and characterized by X-ray diffraction, Fourier transform infrared spectra, nitrogen adsorption and scanning electron microscopy. It was found that honeycomb-like MnO nanosheets vertically grew on the surface of montmorillonite. MnO nanosheets@MMt exhibited high methylene blue (MB) removal rate, which reached 97.