Objective To investigate effectiveness of dexmedetomidine on preventing shivering of patients after spinal surgery.Methods A total of 78 cases with spinal surgery under anesthesia were randomly divided into study group(dexmedetomidine treatment) and the control group(saline treatment).Heart rate(HR)and mean arterial pressure were observed and recorded at 15,30,60 min after intubation,before and after extubation.Ramsay sedation score,chills grading,chills occur time and postoperative adverse reactions were recorded.Results In study group,HR were ((72.3 ± 5.2) time/min,(83.2 ± 4.5) time/min),mean arterial pressure were((72.7 ±5.0) mmHg,(90.3 ±7.9) mmHg) at before and after extubation,significant lower than that of control group((73.6 ±4.9) time/min,(88.9 ±4.9) time/min; (78.5 ±4.3) mmHg,(95.5 ± 14.9)mmHg;P＜0.05).The incidence of shivering (7.7％) in study group was significantly lower than the control group(30.8 ％,x2 =6.685,P =0.009).Ramsay sedation score at immediately,30 min,60 min into the PACU were (3.1 ± 1.0),(2.1 ± 0.4),(2.0 ± 0.3) respectively,higher than those of control group ((2.0 ± 0.4),(1.3±0.2),(1.1 ±0.3) ; F inter-group =12.543,P＜0.001;F inner-group =9.391,P ＜0.001;F interaction =5.972,P =0.023).The incidence of adverse reactions such as nausea and vomiting in the control group was higher than those of the study group(P =0.003),while the incidence of dry mouth in study group was higher (P =0.002).Conclusion Intraoperative dexmedetomidine can significantly reduce the incidence and degree of shivering in patients with orthopedic spinal surgery after general anesthesia.Dexmedetomidine is proved to be a more ideal drug to prevent shivering in orthopedic spine surgery after general anesthesia.

Objective To explore the characteristics of TCM syndromes of acute coronary syndrome(ACS). Methods Clinical data of 127 ACS patients were collected and then a database was established.After that,the distribution of syndrome patterns was analyzed.Results The incidences of the following excess syndrome patterns were in a decreasing sequence:stasis syndrome,phlegm syndrome,cold syndrome and heat syndromes.The incidence of stasis syndrome was 90.5%,which was much higher than other excess syndromes.The incidences of the following deficiency syndrome patterns were in a decreasing sequence:heart-Qi deficiency syndrome,heart-Qi exhaustion syndrome,heart-yin deficiency syndrome,heart-Qi depletion syndrome,heart-kidney deficiency syndrome and heart-blood deficiency syndrome.The incidence of heart-Qi deficiency syndrome was 75.6%,which was much higher than other deficiency syndromes.The incidences of the stasis syndrome and cold syndrome in acute myocardial infarction(AMI)were higher than those in unstable angina(UA),and the incidences of heart-Qi deficiency syndrome and heart-Qi exhaustion syndrome in AMI were higher than those in UA(P

Maternal heart disease has emerged as one of the major diseases threatening pregnant women's safety and long-term cardiovascular health. It is worth noting that there is a large gap in pregnancy prognosis with various cardiovascular diseases. The American College of Obstetricians and Gynecologists (ACOG) has published a practice bulletin named "Pregnancy and Heart Disease" in April 2019, which addressed the prevalence, risk factors, and heart disease effects on pregnancy and the puerperium. It outlined the common types and tiered care recommendations for cardiovascular diseases during pregnancy and puerperium.

Retinopathy of prematurity( ROP),a leading cause of childhood visual impairment,is a vascular proliferative retinopathy in premature infants. Although the hallmark of ROP is abnormal retinal vasculature, a growing body of research in animals and observations in patients support a critical role for the neural retina in the ROP disease process. ROP can affect the foundation of the retina and optical nerve during the development duration in childhood, presenting with abnormalities in electroretinogram and multifocal electroretinogram. In addition,it was found that ROP has different degrees of influence on the development of the dioptric system ,which will result in refractive error as the child progress to adulthood. The relationship of the electrophysiology features or refractive abnormality and ROP was summarized in this article.

Objective To develop a rapid method based on ARMS, named four primers allele-specific PCR(4p-AS PCR), to detect the most common non-deletional ?-thalassemia mutation Hb Constant Spring(Hb CS) by PCR technique. Methods The 4p-ASPCR was used to detect the Hb CS mutation of ?-thalassemia in 38 DNA samples of Hb H disease patients and using PCR-RE and DNA sequencing to confirm the results. Results Among the 38 Hb H disease patients 15 cases was revealed to carry Hb CS, 16 cases were deletional Hb H, and 7 cases need to be defined.Conclusion A simple, rapid and reliable method, named 4P-ASPCR, to detect Hb CS mutation have been developed. It is also may be useful in screen other point mutations such as Hb Quong Sze.

Alzheimer's disease (AD) is the most common type of dementia and a neurodegenerative disease with progressive cognitive dysfunction as the main feature. How to identify the early changes of cognitive dysfunction and give appropriate treatments is of great significance to delay the onset of dementia. Some other researches have shown that AD is associated with abnormal changes of brain networks. To study human brain functional connectivity characteristics in AD, 16 channels electroencephalogram (EEG) were recorded under resting and eyes-closed condition in 15 AD patients and 15 subjects in the control group. The synchronization likelihood of the full-band and alpha-band (8-13 Hz) data were evaluated, which resulted in the synchronization likelihood coefficient matrices. Considering a threshold T, the matrices were converted into binary graphs. Then the graphs of two groups were measured by topological parameters including the clustering coefficient and global efficiency. The results showed that the global efficiency of the network in full-band EEG was significantly smaller in AD group for the values of T = 0.06 and T = 0.07, but there was no statistically significant difference in the clustering coefficients between the two groups for the values of T (0.05-0.07). However, the clustering coefficient and global efficiency were significantly lower in AD patients at alpha-band for the same threshold range than those of subjects in the control group. It suggests that there may be decreases of the brain connectivity strength in AD patients at alpha-band of the resting-state EEG. This study provides a support for quantifying functional brain state of AD from the brain network perspective.
Alzheimer Disease ; physiopathology ; Brain ; physiopathology ; Brain Mapping ; Case-Control Studies ; Cluster Analysis ; Cognition Disorders ; physiopathology ; Electroencephalography ; Humans ; Probability ; Rest

Objective To study the synchronization of electroencephalogram (EEG) in the patients with Alzheimer's disease (AD). Methods Sixteen-channel EEG was recorded under resting, eyes-closed condition in 8 AD patients and 8 control subjects. After data preprocessing, the synchronization likelihood was measured between pairs of EEG channels for the full band,δband (0.5-4 Hz),θband (4-8 Hz),αband (8-13 Hz) andβband (13-30 Hz) in the AD and control groups. Mean synchronization likelihood values of each frequency band were compared between the two groups. Results At the full band,θband andαband, the mean synchronization likelihood values of the AD group were lower than that of the control group (P<0.05). There was no significant difference in the two groups at theδandβbands (P>0.05). Conclusions The EEG synchronization of AD patients decreases at the full band,θandαbands, suggesting that collaborative information processing ability atθandαbands reduces between different brain regions in the AD patients. The research provides support for further study of the brain functional connectivity characteristics in the AD patients.

Objective To evaluate the effects of dexmedetomidine on the expression of tumor necrosis factor-α(TNF-α) and intercellular adhesion molecule-1 (ICAM-1 ) during cerebral ischemia-reperfusion (I/R ) in rats .Methods Thirty-six male Sprague-Dawley rats , aged 8-12 weeks ,weighing 280-320 g ,were randomly divided into 3 groups ( n= 12 each ):sham operation group (group S ) , cerebral I/R group (group I/R ) and dexmedetomidine group (group D ) .The animals were anesthetized with 10% chloral hydrate 3.5 ml/kg .The focal cerebral ischemia was induced by middle cerebral artery occlusion using a nylon thread with rounded tip inserted into internal carotid artery and advanced cranially until resistance was met .In group D ,dexmedetomidine 3μg/kg was injected intravenously immediately after beginning of ischemia ,followed by infusion at 3μg·kg-1 ·h-1 for 120 min ,while the equal volume of normal saline was given in group I/R .Four rats from each group were chosen at 24 ,48 and 72 h of reperfusion , and blood samples were taken from the left ventricle to determine the concentrations of serum S100B protein .The rats were then sacrificed and the brains were removed to determine the expression of TNF-αand ICAM-1 in brain tissues .Results Compared with group S ,the concentrations of serum S100B protein were significantly increased , and the expression of TNF-α and ICAM-1 in brain tissues was up-regulated in I/R and D groups ( P<0.05) .Compared with group I/R ,the concentrations of serum S100B protein were significantly decreased , and the expression of TNF-α and ICAM-1 in brain tissues was down-regulated in group D ( P<0.05 ) .Conclusion The mechanism by which dexmedetomidine reduces the cerebral I/R injury is related to down-regulation of TNF-αand ICAM-1 expression in rats .

OBJECTIVE: To observe the therapeutic effects of the conventional therapy plus Melitracen and Flupentixol in the treatment of functional dyspepsia(FD).METHODS: 320 FD cases were divided into gastrointestinal dyskinesis type(Type A,n=120 cases),ulceration type(Type B,n=100 cases),and nonspecific type(Type C,n=100 cases) based on their clinical symptoms.Patients of different clinical types were randomly assigned to receive conventional therapy alone or in combination with Melitracen and Flupentixol for 4 weeks.The curative effects were observed using gastrointestinal symptom rating scale(GSRS) and the total effective rate were computed.RESULTS: After treatment,the GSRS score of 3 different clinical types of FD in the combination therapy group versus the conventional therapy alone were 1.53?1.68 vs.3.10?1.78,2.02?1.63 vs.3.48?1.80 and 3.46?2.95 vs.5.18?3.21 respectively(P

OBJECTIVETo improve the radio frequency (RF) transmission distance of the wireless terminal of the medical internet of things (LOT), to realize the real-time and efficient data communication, the intelligent relay system based on STM32F103 single chip microcomputer (SCM) is proposed.

METHODSThe system used nRF905 chip to achieve the collection, of medical and health information of patients in the 433 MHz band, used SCM to control the serial port to Wi-Fi module to transmit information from 433 MHz to 2.4 GHz wireless Wi-Fi band, and used table look-up algorithm of ready list to improve the efficiency of data communications.

RESULTSThe design can realize real-time and efficient data communication.

CONCLUSIONThe relay which is easy to use with high practical value can extend the distance and mode of data transmission and achieve real-time transmission of data.