Objective To discuss aspects of medical equipments data information management techniques:medical equipment information management and hospital equipment management system naming regulations which are the core of hospital medical equipment data information management techniques. Methods From view of techniques,it thoroughly discussed concrete techniques regulations of each part. Results It has important directive function for medical equipments informational management and department of equipment management. Conclusion Establishment of medical equipment information management will promote hospital management level enormously,and more and more emphasis are being placed on it.

Objective To discuss the medical consumable materials and its storeroom management techniques. Methods From techniques view, it was thoroughly discussed the concrete operating regulations of applying, check in, check out, storeroom specific management, data statistics and second-level storeroom of consumable materials. Results It basically included all contents of management of consumable materials, It has important directive function for medical consumable materials informational management and department of equipment management. Conclusion Economic benefit and socialeffect can be more exerted through the usage of management techniques of medical consumable materials, and more full-scale service can be provided.

Objective To evaluate the clinical effectiveness of interventional treatment of atrial septal defect (ASD). Methods Transcatheter closure of ASD was performed in 480 cases (198 males and 282 females), age ranged from 1.2 to 72 years (mean 24?8 years). All patients finished clinical examination, chest X-ray, electrocardiography (ECG) and trans-thoracic echocardiography (TTE) for the diagnosis of secundum ASD. The stretch diameter of ASD varied from 6-34 mm, mean 16?4 mm. Four hundred and seventy cases were simple opening secundum ASD. Results The devices were discharged successfully in all patients. The diameter of the occluders selected ranged from 10-40 mm, mean 20?6 mm. Among the patients who had multiple-openings, six cases were closed completely with one occluder, and the other four cases were closed with two occluders. Conclusion Interventional treatment is an effective, safe and optimal choice for the treatment of ASD.

Objective To improve hospital power quality and guarantee the stability of medical equipment. Methods Leg of circuit is taken for power supply. Refining plant is equipped for electric barbed wire. Conditions are improved for equipment access. Power quality monitoring is strengthened. Results Power quality is effectively improved while the failure rate decreases obviously. Conclusion It is essential to improve power quality for high medical equipment quality.

With more and more equipments installed,the quality of power in hospital becomes worse and worse,which seriously threatens the safety of equipments.To assure medical devices running stably and improve the quality of power supply,we adopted the method of brunch power supply and power net purifying instruments in improving the condition of equipments switched on power and monitoring power quality,so that the supply quality in hospital was improved,as well as equipments trouble rate was decreased.

The necessity and importance of medical equipment quality control are analyzed on the basis of clinical cases of ventilator using.It is necessary because it assures the technical performance in the process of medical diagnosis and treatment.It is important because it extends the work range of medical engineers in hospital,changing them from the state of passive maintenance to active quality control,thus contributing to the combination of engineering and clinical diagnosis and treatment.Further more,it promotes the development of clinical medical engineering in hospital.

Objective To investigate the serum cystatin C (CysC) level and explore its relationship with cytokines and atherosclerosis (AS) in maintenance hemodialysis (MHD) patients.Methods A total of 110 stable MHD patients undergoing hemodialysis for at least six months and 60 healthy control people were enrolled in the study.Serum levels of CysC and high-sensitivity Creactive protein (hsCRP) were measured by immunoturbidimetry.The serum levels of total homocysteine (tHcy),IL-1β,IL-6 and TNF-α were determined by ELISA.Prevalence of atherosclerosis was detected by carotid ultrasonography.The relationship of CysC level and cardiac geometry incidence in MHD patients was analyzed by Logistic regression model.Results The serum CysC level was significantly higher in MHD patients as compared with healthy controls [(6.19±0.95) mg/L vs (0.76±0.21) mg/L,P＜0.01],and the serum levels of hsCRP,tHcy,IL-1β,IL-6,TNF-α were significantly higher in MHD patients than those in healthy control group (P＜0.05 or P＜0.01).The serum CysC level was higher in MHD patients with carotid artery atherosclerosis compared to patients without carotid artery atherosclerosis (P＜0.05).CysC was positively correlated with hsCRP,tHcy,IL-1β,IL-6,TNF-α respectively (P＜0.05 or P＜O.01),and was positively correlated with carotid intimal medial thickness (IMT) and AS.Besides,a negative correlation was found between the serum CysC level and the serum albumin level (P＜0.05),while CysC was positively correlated with dialysis duration,systolic pressure and iPTH (P ＜0.05).Conclusion Serum CysC level is significantly higher in MHD patients and is correlated with hsCRP,tHcy,IL-1β,IL-6,TNF-α as well as carotid artery atherosclerosis,which indicates that CysC is an independent risk factor of AS in MHD patients.

Objective To investigate the effect of L-carnitine on pathological changes of myocardium and the underlying mechanism in chronic renal failure rats (CRF). Methods A total of 55 male SD rats were randomly divided into sham group (n=10),model group (n=15),low dose (300 mg/kg),medium dose (600 mg/kg) and high dose (900 mg/kg) L-carnitine group(n=10,each).5/6 subtotal nephrectomy was performed in these rats without sham group.One week after the operation,normal saline or corresponding dose L-carnitine were intragastrically administrated to sham and model group or L-carnitine groups for 17 weeks.Transthoracic echocardiography,mean arterial pressure (MAP),heart rate (HR) and heart weight/body weight were assessed.Moreover,24h urine protein,renal function,SOD,MDA,IL-6,ATP,ADP were measured at the end of the study.Additionally,pathological changes in myocardium were detected by light microscope and transmission electron microscope. Results (1) ATP (μmol/g·wt)in L-carnitine groups (2.35±0.24,3.59±0.28,3.78±0.25) was significantly higher than that in model group (1.61±0.12) (all P＜0.01).(2) Thickness of posterior wall of left ventricle (mm) in high dose L-carnitine group was thinner than that in model group (3.74±0.23 vs 4.18±0.48,P＜0.05). (3) The ratios of heart weight to body weight in both medium dose and high dose L-carnitine groups (3.92±0.27,3.65±0.2) were significantly lower compared to model group (3.99±0.27) (all P＜0.01). (4) Under light microscopy,disarrangement and hypertrophy of cardiac myocytes,increased myocardial fibrosis were observed in model group, while these changes and the pathological scores were significantly improved in both medium dose and high dose L-carnitine groups (7.14±1.07,6.13±0.99),as compared with model group (9.88±1.13) (all P＜0.01).Under electron microscopy,typical changes in cardiac hypertrophy were observed,including dissolution of myocardial fibers,increasing and swelling of mitochondria,membrane rupture as well as matrix increase in model group,while these changes were ameliorated by L-carnitine in a dose-dependent manner. (5) Seventeen weeks after the treatment,both IL-6 and MDA were decreased in all L-carnitine-treated groups than those in model group [IL-6 (ng/L):261.86±13.18,240.12±18.7,233.34±36.88 vs 596.64±81.41; MDA (nmol/L):15.23±2.01,12.41±0.6.10.97±1.9 vs 21.84±2.71).Whereas,SOD (U/ml) were increased in L-carnitine-treated groups (51.2±6.11,58.51±5.52,60.63±6.94) than that in model group(32.01 ±5.69 )(all P＜0.05).(6) No significant differences of systolic,diastolic blood pressure or MAP were found among groups. Conclusion L-carnitine can improve energy metabolism,micro-inflammation and oxidative stress in myocardium of CRF rats,which may be associated with the amelioration of cardiac hypertrophy and fibrosis.

Objective: To evaluate the therapeutic effect of cystic de compression (CD) operation autosomal dominant polycystic kidney disease(APKD) based on clinical material, experience and related theory. Methods: Thirty-nine APKD received CD operation(unilateral 31 cases, bilateral 8 cas e s) in our hospital from 1985 to 1995. Four main parameters, cystic renal enlargi ng rate(CRER)，lumbar pain recurring rate(LPRR)，blood pressure elevating rate(B PER) and renal function abnormal rate(RFAR), were observed 3, 6, 12, 36 and 60 months after CD operation. And the changes were analyzed based on related theory . Results: The changes of 4 main parameters on 5 different time points post operation in unilateral 31 cases were:（1）CRER 19.4%,38.7%,61.3%,1 0 0% and 100%; （2）LPRR 12.9%,48.4%,71.0%,100% and 100%; （3）BPER 6.5%,22.6%,4 1.9%,71.0% and 96.8%;（4） RFAR 3.2%, 12.9%,22.6%,74.2% and 96.8% respectively. Conclusion: During a short period, CD operation can relieve th e lumbar pain, but it is not certain for improving CRER,BPER and RFAR. in the lo ng run, the therapeutic effect is not sure.

The value of combined application of both ECG-gated cine MRA and 3D-CEMRA in the detection of large intracranial aneurysms was evaluated and the findings were compared with those of conventional MRA and DSA. Twenty-four patients with 26 large intracranial aneurysms underwent MRI and DSA. All these aneurysms, diameter from 15 to 39 mm, were located at internal cerebral artery (n=12), vertebral artery (n=3), basilar artery (n=4), anterior cerebral artery (n=2), middle cerebral artery (n=2), anterior communicate artery (n=2) and posterior communicate artery (n=1). Thirteen cases of hematoma or cavernoma were studied as control group. All patients were examined on GE 1.5T MR system. ECG-gated cine MRA was performed with 2D multi-phase fast gradient-recalled echo sequence in a single section. All the images were analyzed with signal intensity VS time curve for differentiating intraaneurysmal blood flow from static tissue. The results were analyzed by statistic "t" test. 3D-CEMRA was performed with spoiled gradient-recalled echo and one dose of Gd-DTPA. All data was processed with multi-plannar reformat (MPR) and tomography for the demonstration of aneurysms in detail. All 26 aneurysms were demonstrated successfully by combined application of both cine MRA and 3D-CEMRA. Compared to DSA and conventional 3D-MOTSA, its sensitivity and specificity figures were both 100%. Cine MRA could differentiate the blood flow from the static tissue. The intensity VS time curves of intraaneurysmal blood flow offered fluctuating form and average signal change between systole and diastole period was about 89.8 +/- 37.4; However, under the control group, intraaneurysmal thrombus or cerebral hemorrhage or cavernomas had no significant signal change and the curves offered steady form with the average signal change being about 8.2 +/- 6.3. There was statistically significant difference between the intraaneurysmal blood flow and static tissue (P=0.025, <0.05). 3D-CEMRA was very useful in demonstrating the aneurysmal size, intraaneurysmal thrombus formation, neck and the detailed relationship of the aneurysm to the surrounding structures. It was concluded that the combined application of both cine MRA and 3D-CEMRA might be a valuable clinical tool for the detection of large intracranial aneurysms.
Angiography, Digital Subtraction ; Contrast Media ; Evaluation Studies ; Image Enhancement ; Image Processing, Computer-Assisted ; Imaging, Three-Dimensional/methods ; Intracranial Aneurysm/*diagnosis ; Magnetic Resonance Angiography/*methods ; *Magnetic Resonance Imaging, Cine