AIM:To evaluate the prophylactic effect of azasetron in different juncture injection on postoperative nausea and vomiting(PONV)during patients controlled intravenous ananlgesia(PCIA).METHODS:One hundred and twenty patients,scheduled for selective abdominal operations,were randomly divided into four groups:patients received an preoperative intravenous injection of 10 mg azasetron(Group A,n=30),patients received an intravenous injection of 10 mg azasetron during abdominal cavity(Group B,n=30),patients received an intravenous injection of 10 mg azasetron when the operation were finished(Group C,n=30),patients with no azasetron as control(Group D,n=30).The incidence rate and score of PONV,the visual analogue scales(VAS)and Ramsay scores were recorded at 4,8,12,24,48 h postoperatively.RESULTS:There was significant difference between the postoperative VAS during 12 to 48 h and that of 4 h postoperatively(?0.05).CONCLUSION:A preoperative intravenous injection of 10 mg azasetron can be used effectively to prevent PONV during PCIA.

It is necessary to build a three-dimensional human body model to display the position and track the route of a micro device inside the human body exactly. The key is to construct a three-dimensional human body model according to the patient characteristic. This paper gives a simple way to build the personal geometric model based on the OpenGL programming in the Visual Basic environment. It is proved that the method contributes to the realtime interactive operation to change the model character according to the individual parameter.

The compression of medical image is the key to study tele-medicine & PACS. We have studied the statistical distribution of wavelet subimage coefficients and concluded that the distribution of wavelet subimage coefficients is very much similar to that of Laplacian distribution. Based on the statistical properties of image wavelet decomposition, an image quantization algorithm is proposed. In this algorithm, we selected the sample-standard-deviation as the key quantization threshold in every wavelet subimage. The test has proved that, the main advantages of this algorithm are simple computing and the predictability of coefficients in different quantization threshold range. Also, high compression efficiency can be obtained. Therefore, this algorithm can be potentially used in tele-medicine and PACS.
Algorithms ; Image Processing, Computer-Assisted ; methods ; Linear Models

Feedback is an important way of information transmission in motor function output. Movement-related information can be transmitted as proprioceptive, haptic, visual and/or audial information to the central nervous system for control and modification of the temporal and spatial precision of motor output. Here presented is a systematic discussion on the principle, technique and effect for some typical motor function rehabilitation methods such as treatment based on EMG feedback, robot-aided movement therapy, high-level perceptional feedback and motor training effect with 3-D virtual reality environment.
Feedback, Psychological ; Humans ; Motor Activity ; physiology ; Motor Skills Disorders ; etiology ; rehabilitation ; Stroke ; complications ; Stroke Rehabilitation ; Therapy, Computer-Assisted ; User-Computer Interface

A method for the suppression of geomagnetic field interference is here-in introduced. It is designed for use in the magnet locating system of the engineering-based microcapsule inside the alimentary tract. This method marks the geomagnetic field interference levels by getting the static value. Then subtracting the static value from the dynamic value. The results of the experiment show that the method can assess the geomagnetic fi eld interference levels around thelocating waistcoat accurately. And the three-dimensional tracking trajectory shows that the method has greatly improved the accuracy of the capsule location inside the alimentary tract.
Biosensing Techniques ; instrumentation ; Capsule Endoscopy ; economics ; methods ; Computer Simulation ; Electromagnetic Fields ; Equipment Design ; Gastrointestinal Tract ; physiology ; Humans ; Magnetics ; Phantoms, Imaging

The statistical characteristic is the key to image compression. Here we have studied the statistical characteristic of wavelet subimage, and designed a new image quantization algorithm referred to statistical characteristics of both wavelet subimage and human visual.
Algorithms ; Image Processing, Computer-Assisted ; methods ; Linear Models ; Teleradiology

The power and signal transmission technology is one of the key technologies in neuroprosthetic research. This paper proposes firstly the related theory of power and signal transmission technology in neuroprosthetic, then summarizes the three key aspects of the power and signal transmission technology in neuroprosthetic. After analyzed the development of the inductive wireless power harvesting technology, the wireless telemetry technology and the wireless power harvesting telemetry technology, the emphasis on research contents will be proposed and discussed, which will help accelerate the further research of prosthetic.
Electric Power Supplies ; Electrodes, Implanted ; Humans ; Neural Prostheses ; Prosthesis Design ; instrumentation ; Signal Processing, Computer-Assisted ; instrumentation ; Telemetry ; instrumentation ; Wireless Technology ; instrumentation

Objective:To investigate the daily dietary fiber intake, the main adverse cardiovascular events during follow-up and the cardiac event-free survival in patients with chronic heart failure, and to analyze the relationship between dietary fiber intake and cardiac event-free survival in this population.Methods:This study was a prospective investigation. The investigation was performed in chronic heart failure patients from three third-class hospitals in Suzhou using general information questionnaire and 3-day diet diary. Major adverse cardiovascular events within 6 months after discharge and event-free survival were obtained by telephone call and medical records.Results:The incidence of major cardiovascular adverse events in 122 patients with heart failure was 27.9% within 6 months after discharge. Their dietary fiber intake was 8.1(5.8-10.9)g/d, lower than the recommended intake. Kaplan-Meier plots and log-rank tests demonstrated that cardiac event-free survival was significantly shorter in patients with dietary fiber deficiency ( P=0.043). Patients with dietary fiber intake ≥6 g/d after discharge showed decreased risk of major adverse cardiovascular events compared to patients with dietary fiber intake<6 g/d ( HR=0.422; 95% CI=0.189-0.942; P=0.035). Conclusions:This study revealed insufficient dietary fiber intake in patients with heart failure. Insufficient dietary fiber intake was associated with higher risk of major adverse cardiovascular events and shorter cardiac event-free survival in heart failure patients within 6 months after discharge. In conclusion, patients with heart failure can increase dietary fiber intake in order to improve prognosis.