In patients with conventional wider LBBB morphology, the presence of mid-QRS notching or slurring is a strong predictor of better response to CRT.

In recent years, percutaneous catheter interventions have continuously evolved, becoming an essential strategy for interventional diagnosis and treatment of many structural heart diseases and arrhythmias. Along with the increasing complexity of cardiac interventions comes ever more complex demands for intraoperative imaging. Intracardiac echocardiography (ICE) is well-suited for these requirements with real-time imaging, real-time monitoring for intraoperative complications, and a well-tolerated procedure. As a result, ICE is increasingly used many types of cardiac interventions. Given the lack of relevant guidelines at home and abroad and to promote and standardize the clinical applications of ICE, the members of this panel extensively evaluated relevant research findings, and they developed this consensus document after discussions and correlation with front-line clinical work experience, aiming to provide guidance for clinicians and to further improve interventional cardiovascular diagnosis and treatment procedures.

This study evaluated the Pb(II) sorption capacity of jujube pit biochar (JPB) in aqueous solution, which was derived from jujube pit by pyrolysis and used as a promising and economical adsorbent. More importantly, the utilization of JPB could realize the recycling of agricultural residues. The JPB was characterized using conventional science technologies, including SEM, BET and FT-IR, and the sorption capacity of JPB for lead ions was investigated according to different adsorption parameters, such as the kinetics data, solution pH, isotherms data, coexisting ions of Na + and K + , desorption and reusability, and solution temperature. The results of kinetics data suggested that the lead ion adsorption process by JPB could be fast to reach equilibrium within 30 min. Additionally, the adsorption capacity of JPB for Pb(II) was calculated to be maximum for 137.1 mg/g at pH 6.0. More importantly, after five cycles of desorption and reuse, the JPB still reached 70% of its original adsorption capacity. All the results suggested that JPB had a broad application prospect for the purification of lead ions in practical. Pb(II) has serious contamination with toxicity in aqueous soulution 1 that is extremely harmful to human health 2-4. Removing lead ions from wastewater has become an important task for humans. To date, some physical and chemical technologies, such as electrodialysis 5 , flocculation 6 , ion exchange 7 , chemical precipitation 8 , membrane filtration 9 biosorption 10 and adsorption 11 , have been applied to remove lead ions. Among all these purification strategies, adsorption is a promising and attractive method because the operation process for adsorption is simple, the operation cost is low and the possibility of secondary pollution is minimal 12. According to previous research, different types of adsorbents, such as montmorillonite 13 , bionanocomposite 14 , activated carbon 15 , activated carbon fiber 16 , coal 17 , periwinkle shells 18 , and nanocomposite 19 , have been used for metal ions adsorption. The conventional adsorbent material, activated carbon, is widely used in wastewater purification and has attracted remarkable attention for considerable adsorption capacity and complex pore structure. However, traditional activated carbons have some defects, namely, a high fabrication cost and low reusability 20. Therefore, research on carbon-based adsorption materials with high adsorption performance and low cost is of great importance and practical application value. Biochar is a carbon material with abundant pores that is derived from biomass and prepared by pyrolysis. The merits of considerable adsorption capacity, a low preparation cost and an easy preparation process have made biochar adsorbents a current research focus 21 , and various kinds of biochar have been used as adsorption materials to remove Pb(II). Lee et al. measured the sorption capacity of GB (gingko leaf biochar), PB (peanut shell biochar) and MB (Metasequoia leaf biochar) for lead ions, and the results showed that the adsorption capacit...

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