Objective To evaluate the MDCT and MRI findings of the ovarian thecofibroma.Methods 15 patients with 16 lesions of ovarian thecofibroma confirmed by pathology after surgery were analyzed retrospectively.MDCT was performed in 1 2 patients and MRI in 8.Results 16 lesions were all unilateral,of which 1 patient had 2 lesions on the same side.10 lesions were located in the right side of ovary,while 6 ones were in the left side.The shape of more lesions was round or oval,and that of huge lesions was lobulated. 14 lesions were well-defined.These tumors were solid in 4 lesions,mixed in 9,and cystic in 3.The largest diameter of tumors ranged from 20 to 220 mm with a mean value of (89±58.29)mm.Plain MDCT showed the substantial part of tumors with iso-den-sity or slight lower density with the mean CT value of (40±8)HU.There was no or slight enhancement in comparison with the mean CT values of (49±9)HU on enhanced MDCT.5 lesions with isointensity and 3 with slight hypointensity on T1-weighted ima-ges,and all the tumors with heterogeneous signal on T2-weighted images were found.6 lesions appeared isointensity with obscure nebulous high signal on T2-weighted.The capsules of 5 lesions showed incomplete ring with lower signal.There was high signal ring outside of tumor capsule on T2-weighted in 5 lesions.All of 8 lesions were enhanced slightly,and the cystic portion was lower signal on T1-weighted images and high signal on T2-weighted images.Among all patients,ascites was found in 10 cases (66.7%)and other kinds of tumors of ovarian or uterus in 13 cases (86.7%).Conclusion MDCT and MRI findings of the ovarian thecofibroma have cer-tain characteristics,which is helpful for the diagnosis and differential diagnosis.

OBJECTIVE To decrease the infection rate in intensive care unit(ICU) effectively. METHODS To analyze the reason of infection in ICU,such as the infection of respiratory tract,the infection of urinary system,the vascular infection after therapy,and the infection of alimentary tract,and to raise the control measure of nursing. RESULTS To pay attention to the arrangement and setting in ICU,the implementation of the regulation of nursing strictly, the intravascular therapy,the correct realizing of nursing procedure,and the reinforcement of nursing management,in order to keep the low infection rate. CONCLUSIONS All nursing measure raised/above is very useful for the hospital infection control in ICU.

OBJECTIVE To reduce the nosocomial infection rate among bone marrow transplanted patients.METHODS The related factors of infection among bone marrow transplanted patients were analyzed.RESULTS The environmental microbiology pollution,carrying opportunistic pathogens,oral mucosa damage,deep venous catheterization and others were the main related factors of infection.CONCLUSIONS The proposed control of endogenous and exogenous infection and strengthening the counter measures in the oral care and deep venous catherization care could effectively prevent nosocomial infection among bone marrow transplanted patients.

OBJECTIVE To advocate the establishment of a hospital center for intravenous drug preparation,in order to control infection caused by intravenous infusion.METHODS The unsafe factors brought by traditional distributed intravenous drug preparation were analyzed and propose the necessity and importance of the establishment of pharmacy intravenous admixture center.RESULTS Without any case of transfusion reaction occurred for 3 years,the Pharmacy intravenous admixture center could ensure the safety of patients.CONCLUSIONS Pharmacy intravenous admixture center plays an important role in providing the aseptic environment,shortening the preparatory time after the liquid stored and ensuring that the liquid is not contaminated.

Objective To explore the viral etiology spectrum of different age and different seasons for neo-natal pneumonia.Methods Medical records of 1 073 cases of neonatal pneumonia in our hospital were retrospectively analyzed,line direct immunofluorescence assay were used to detect nasopharyngeal secretions of newborns,the test results were statistically analyzed.Results In 1 073 cases with neonatal pneumonia,406 cases were detected positive with virus infected,the positive rate was 37.8%,7 cases were mix infected.334 cases were infected by respiratory syncytial virus(RSV),which had the highest detection rate,accounting for 82.3%;RSV infection rate in 1 -6 month baby was 36.4%,which was higher than the >6 -12 month -old baby with RSV infection rate 26.5%,the difference was statistically significant(χ2 =12.25,P <0.05);RSV infection rate in winter and spring group was 39.7%,which was significantly higher than that in autumn and winter group(13.6%);PIV3 infection rate in winter and spring group was 1.8%,significantly lower than that in autumn and summer group(9.1%),the difference was statistically signifi-cant(χ2 =31.27,P <0.05 ).Conclusion RSV is the most common viral in neonatal pneumonia,more attention should be payed to RSV infection control in small babies and at winter and spring,pay attention to PIV3 infection at autumn and summer.

Objective To discuss the effect of the bedside shielding protection on the first and second operators against position radiation in percutaneous coronary intervention.Methods The surface entrance dosage rate for the first and second operators at 125 cm height with and without radiation protection shielding (provided separately) were measured.The t-test was used for statistical analysis of arithmetic mean values of dosage rates.And the effect of bedside shielding protection was calculated.Results The position radiation dosage rate at which the first operator exposed was significantly higher than that for the second in the case of no bedside protection (t =97.1-2 263.0,P ＜ 0.05),whereas the dosage rate at which the first operator (except for the left foot position) exposed was significantly lower than that for the second in the case of no bedside protection (t =-80.9-275.1,P ＜ 0.05).The shielding effect of bedside protection on the first and second operators was in the range of 92.26％-99.36％ and 27.83％-97.90％,respectively.Conclusions The bedside protection may effectively reduce position radiation dose to patients and the use of bedside protection changed the trends in the dose distribution in operators' standing region.Attention should be focused on the radiation protection of the second operators in daily work by making full use of bedside protection.

Objective To evaluate the clinical value of 320-detector CT in interventional treatment of bronchial artery hemoptysis. Methods CTA and DSA images of 30 patients with bronchial artery hemoptysis were retrospectively analyzed.Spatial anatomical characters of the bronchial arteries,such as the type of branches,origin and opening positions of the bronchial arteries were observed and recorded.Results In 30 patients,6 bronchial arteries distribution patterns were found,and the most common type was R1 L1 (43.3%).83 bronchial arteries were identified using CTA,including 38 on the right and 45 on the left.The right bronchial arteries mainly originated from the intercostal artery (52.6%),while the left bronchial arteries mainly from the descending aorta and aortic arch (82.2%).The opening positions of right and left bronchial arteries were mainly located at the right wall of the descending aorta (78.9%),and anterior wall of the descending aorta (62.2%),respectively.When the cacarina of trachea was used as the reference position,the left and right bronchial arteries were mainly located in the range of above 2 cm to below 1 cm from tracheal bifurcation, accounting for 80% and 89.5%,respectively.Compared with DSA,the sensitivity and specificity of CTA were 97.5% and 100%, respectively.Conclusion 320-detector CT can be used to clearly display the distribution patterns,origin and opening positions of bronchial arteries,and especially to find bronchial arteries with ectopic origin.It is possible to apply 320-detector CT in preoperative routine examination and postoperative evaluation of massive hemoptysis.

Objective To evaluate the effect of monosialoganglioside (GM-1) on hippocampal protein kinase B (Akt) /glycogen synthase kinase 3β (GSK-3β) signaling pathway in the rats undergoing cardiopulmonary bypass (CPB).Methods Eighteen healthy male Sprague-Dawley rats, aged 6 months, weighing 400-500 g, were randomly divided into 3 groups (n =6 each) using a random number table:control group (group C), CPB group and GM-1 group.GM-1 20 mg/kg was added to the priming solution in group GM-1, while the equal volume of normal saline was given in group CPB.At 3 h after termination of CPB, blood samples were taken from the jugular vein for determination of plasma neuron-specific enolase (NSE) and S-100β protein concentrations using enzyme-linked immunosorbent assay.After blood sampling, the rats were sacrificed, and the hippocampi were isolated for microscopic examination of the ultrastructure of the hippocampal neurons (with electron microscope), and for detection of neuronal apoptosis (with light microscope) and phosphorylation of Akt and GSK-3β (by Western blot).Results Compared with group C, the concentrations of plasma NSE and S-100β protein, and the number of apoptotic neurons were significantly increased in CPB and GM-1 groups, the phosphorylation of Akt and GSK-3β was decreased in group CPB, and the phosphorylation of Akt and GSK-3β was increased in group GM-1 (P＜0.05).Compared with group CPB, the concentrations of plasma NSE and S-100β protein, and the number of apoptotic neurons were significantly decreased, the phosphorylation of Akt and GSK-3β was increased (P＜0.05), and the pathological changes were reduced in group GM-1.Conclusion GM-1 can reduce apoptosis in hippocampal neurons through activating Akt/GSK-3β signaling pathway, thus mitigating CPB-induced brain injury in rats.

AIM:To study the effect of intraventricular injection(icv) of histamine(HA) on corticotropin releasing hormone (CRH) neurons activity in paraventricular nucleus (PVN) of hypothalamus. METHOD: Fos ontogenic protein immunohistochemistry and double antigen immunohistochemistry method; semiquantitative reverse transcription-polymerase chain reaction(RT-PCR) method were used. RESULTS: After intraventricular injection of HA, (1) number of Fos immunnoreactive positive neurons in PVN increased significantly; (2) double labeling experiments showed that there were 31 78%?1 59% of Fos immunoreactive cells in PVN expressed CRH simultaneously; (3) the CRHmRNA level in PVN was increased in a dose-dependent manner. CONCLUSION: Central histamine activated CRH neurons in PVN of hypothalamus and increase the expression of CRH gene.

Objective To investigate the effect of monosialoganglioside GM-1 on cardiopulmonary bypass (CPB)-induced brain injury in rats.Methods Twenty-seven adult male Sprague-Dawley rats,weighing 350-450 g,aged 15 months,were randomly divided into 3 groups (n=9 each): control group (C group),CPB group and GM-1 group.The animals were anesthetized with chloral hydrate,tracheostomized and mechanically ventilated.Right common carotid and right jugular vein were cannulated for closed-chest CPB.In groups CPB and GM-1,the rats underwent 1 h CPB.GM-1 20 mg/kg was added to the priming solution in group GM-1,while the equal volume of normal saline was given in group CPB.The animals were sacrificed at 3 h after termination of CPB or 3 h after the end of ventilation in group C,the brains were removed and the hippocampi isolated for microscopic examination and for determination of apoptosis (using TUNEL) and Bax and Bcl-2 protein expression (by immunohistochemistry and Western blot).Results Compared with group C,the number of apoptotic neurons and ratio of Bax/Bcl-2 were significantly increased,and the expression of Bcl-2 and Bax protein was up-regulated in groups CPB and GM-1 (P ＜ 0.05).Compared with group CPB,the number of apoptotic neurons and ratio of Bax/Bcl-2 were significantly decreased,the expression of Bax protein was down-regulated and the expression of Bcl-2 protein was up-regulated in group GM-1.The pathological changes were severe in group CPB and attenuated in group GM-1.Conclusion GM-1 can attenuate CPB-induced brain injury in rats and inhibition of the apoptosis in neurons may be involved in the mechanism.