Compared with traditional piezoelectric ultrasonic devices,optoacoustic devices have unique advantages such as a simple preparation process,anti-electromagnetic interference,and wireless long-distance power supply.How...Compared with traditional piezoelectric ultrasonic devices,optoacoustic devices have unique advantages such as a simple preparation process,anti-electromagnetic interference,and wireless long-distance power supply.However,current optoacoustic devices remain limited due to a low damage threshold and energy conversion efficiency,which seriously hinder their widespread applications.In this study,using a self-healing polydimethylsiloxane(PDMS,Fe-Hpdca-PDMS)and carbon nanotube composite,a flexible optoacoustic patch is developed,which possesses the self-healing capability at room temperature,and can even recover from damage induced by cutting or laser irradiation.Moreover,this patch can generate high-intensity ultrasound(>25 MPa)without the focusing structure.The laser damage threshold is greater than 183.44 mJ cm^(-2),and the optoacoustic energy conversion efficiency reaches a major achievement at 10.66×10^(-3),compared with other carbon-based nanomaterials and PDMS composites.This patch is also been successfully examined in the application of acoustic flow,thrombolysis,and wireless energy harvesting.All findings in this study provides new insight into designing and fabricating of novel ultrasound devices for biomedical applications.展开更多
To the Editor:Unanticipated hypertension during emergence refers to acutely elevated blood pressure following general anesthesia in individuals with normal preoperative baseline blood pressure.[1]Due to their normal p...To the Editor:Unanticipated hypertension during emergence refers to acutely elevated blood pressure following general anesthesia in individuals with normal preoperative baseline blood pressure.[1]Due to their normal preoperative blood pressure,inadequate attention was paid to this population.Acute postoperative hypertension,if left untreated,has been linked to serious postoperative consequences such as vascular anastomosis rupture,and cardiovascular and cerebrovascular accidents,affecting the outcome of critically ill and surgical patients.[2]Few studies have revealed the risk factors for unanticipated hypertension after general anesthesia.We performed this retrospective study to identify the factors responsible for unexpected hypertension in adult surgical patients resuscitated from anesthesia based on real-world data from an anesthesia center in eastern China,to provide evidence for perioperative management within this surgical patient population.展开更多
基金This work was supported by the Natural Science Foundation of China(Grant no.U22A20259,12102140)the Shenzhen Basic Science Research(No.JCYJ20200109110006136)the China Postdoctoral Science Foundation(No.2022M721258).We also thank the Analytical and Testing Center of Huazhong University of Science&Technology.
文摘Compared with traditional piezoelectric ultrasonic devices,optoacoustic devices have unique advantages such as a simple preparation process,anti-electromagnetic interference,and wireless long-distance power supply.However,current optoacoustic devices remain limited due to a low damage threshold and energy conversion efficiency,which seriously hinder their widespread applications.In this study,using a self-healing polydimethylsiloxane(PDMS,Fe-Hpdca-PDMS)and carbon nanotube composite,a flexible optoacoustic patch is developed,which possesses the self-healing capability at room temperature,and can even recover from damage induced by cutting or laser irradiation.Moreover,this patch can generate high-intensity ultrasound(>25 MPa)without the focusing structure.The laser damage threshold is greater than 183.44 mJ cm^(-2),and the optoacoustic energy conversion efficiency reaches a major achievement at 10.66×10^(-3),compared with other carbon-based nanomaterials and PDMS composites.This patch is also been successfully examined in the application of acoustic flow,thrombolysis,and wireless energy harvesting.All findings in this study provides new insight into designing and fabricating of novel ultrasound devices for biomedical applications.
文摘To the Editor:Unanticipated hypertension during emergence refers to acutely elevated blood pressure following general anesthesia in individuals with normal preoperative baseline blood pressure.[1]Due to their normal preoperative blood pressure,inadequate attention was paid to this population.Acute postoperative hypertension,if left untreated,has been linked to serious postoperative consequences such as vascular anastomosis rupture,and cardiovascular and cerebrovascular accidents,affecting the outcome of critically ill and surgical patients.[2]Few studies have revealed the risk factors for unanticipated hypertension after general anesthesia.We performed this retrospective study to identify the factors responsible for unexpected hypertension in adult surgical patients resuscitated from anesthesia based on real-world data from an anesthesia center in eastern China,to provide evidence for perioperative management within this surgical patient population.
