Objective To analyse the clinical features,predisposing risk factors and treatment of hematologic diseases complicated by pulmonary fungal infection(PFI).Methods The medical records of 97 cases of PFI were retrospectively analyzed.Results Totally 201 fungal strains were obtained from 97 cases of hematologic diseases.The candida strains were 147(73.1%).Two-fungal infection was 17.5%,and secondary bacterial infection was 71.8%;relative death rate was 23.4%.Cure rate of Amphotericin B deoxycholate and Itraconazole was 67.7% and 63.7%.Conclusion Fungal infection is one of the main pathogens in hematologic diseases complicated by infection.Early diagnosis and treatment is the key to beneficial release and long time survival.Amphotericin B deoxycholate and Itraconazole were effective medicines for treated fungal infection.

Objective To analyze the incidence and the risk factors of retinopathy of prematurity (ROP) among the multiple and single gestations births.Methods A prospective control study was applied to the research.The preterm infants were selected that from September 2013 to December 2015 in neonatology department of our hospital.They were divided into multiple gestations group (52 cases) and single birth infants group (600 cases).RetCam Ⅲl retina camera and binocular indirect ophthalmoscope video were used to screening the ocular fundus.The cure rate of the two groups was compared with chi-square test.Results The incidence of ROP in multiple gestations group (32.69％) was higher than single birth infants group (20.83％) (P =0.047).There was significant difference about the multiple and single gestations births in ≤ 30 weeks (P =0.040),and there was no statistically significant difference in ＞ 30 weeks (all P ＞0.05).With the increase of birth weight,the ROP detection rate of two groupa was reduced.There was no statistically significant difference about different birth weight among the two groups (all P ＞ 0.05).The oxygen usage of ＞ 5 days ROP detection rate was higher than 5 days or less in the two groups (P =0.025,0.001).There was no significant difference in ROP detection rate between two groups with ≤5 d oxygen usage.There was significant difference about the multiple and single gestations births in oxygen usage of ＞ 5 days (P =0.020).Multivariate analysis found that multiple gestations and small gestational age were risk factors for ROP.Conclusion The smaller gestational age,the lower birth weight,and the longer oxygen therapy with the preterm infants,the higher the incidence of ROP.The number of different gestational is also the influences factors of ROP.Multiple gestations overall incidence of ROP is higher than the single birth infants.The smaller the gestational age and the longer oxygen usage,multiple gestations incidence of ROP is higher than single gestation in different births.However,there is no relationship in different birth weight among the multiple and single gestations.

AIM:To investigate atrial natriuretic peptide(ANP) circadian in the encapsulated human ANP(hANP) cDNA transfected cells,to alter the ANP circadian by artificial control to achieve the objective of effectively treat hypertension or congestive heart failure(CHF). METHODS:ANP cDNA was transfected into Chinese hamster ovary(CHO) cells,which were encapsulated in polycarprolactone(PCL) tubes.The longterm survival of transfected CHO cells and the levels of ANP secreted were detected.Circadian rhythm of ANP secreted by encapsulated transfected cells was also studied,which was regulated by melatonin. RESULTS:During culturing,the ANP level secreted by transfected CHO cells in 2 mL of culture medium within 24 hours could reach 210.3 ng/L in a 20 mm-long and 2 mm-diameter PCL tube.The section of ANP displayed a circadian variation:higher in daytime,but lower at night.The acrophase of circadian rhythm was 4:15 but could be shifted to 7:55 after melatonin management. CONCLUSION:ANP cDNA transfected CHO cells that encapsulated into PCL tube can secret ANP,which might be suitable for the future implantation into human body.Our research provides a new approach in the treatment of hypertension and CHF by ANP.

Objective: To investigate the incidence and pathogen distribution of ventilator-associated pneumonia (VAP) among preterm infants admitted to level Ⅲ neonatal intensive care units (NICU) in China. Method: A prospective study was conducted in 25 level Ⅲ NICU, enrolling all preterm infants <34 weeks gestational age admitted to the participating NICU within the first 7 days of life from May 2015 to April 2016. Chi-square test, t test and Mann-Whitney U test were used for statistical analysis. Result: A total of 7 918 patients were enrolled, within whom 4 623(58.4%) were males. The birth weight was (1 639±415) g and the gestational age was (31.4±2.0) weeks; 4 654(58.8%) infants required non-invasive mechanical ventilation and 2 154(27.2%) required intubation. Of all the mechanically ventilated patients, VAP occurred in 95 patients. The overall VAP rate was 7.0 episodes per 1 000 ventilator days, varying from 0 to 34.4 episodes per 1 000 ventilator days in different centers. The incidence of VAP was 9.6 and 6.0 per 1 000 ventilator days in children′s hospitals and maternity-infant hospitals respectively, without significant differences (t=1.002, P=0.327). Gram-negative bacilli (76 strains, 91.6%) were the primary VAP microorganisms, mainly Acinetobacter baumannii (24 strains, 28.9%), Klebsiella pneumonia (23 strains, 27.7%), and Pseudomonas aeruginosa (10 strains, 12.0%). Conclusion The incidence of VAP in China is similar to that in developed counties, with substantial variability in different NICU settings. More efforts are needed to monitor and evaluate the preventable factors associated with VAP and conduct interventions that could effectively reduce the occurrence of VAP.

Objective     To evaluate the early clinical outcomes of the Renatus® balloon-expandable valve in the treatment of severe aortic stenosis. Methods    From November 2021 to April 2022, a total of 38 patients who received Renatus® balloon-expandable valve for severe aortic stenosis in Guangdong Provincial People's Hospital were included. There were 22 males and 16 females, with an average age of 73.7±5.3 years. Mean aortic gradient and peak aortic jet velocity at baseline, post-procedure, and follow-up were compared. Clinical outcomes including all-cause mortality, perivalvular leakage, serious adverse cardiovascular events and the occurrence of permanent pacemaker implantation were assessed. Results    All patients completed the procedure successfully without conversion to thoracotomy or perioperative death. The post-implant mean aortic pressure gradient was decreased from 41.5 (27.8, 58.8) mm Hg to 6.0 (3.0, 8.0) mm Hg, and the peak aortic jet velocity was also decreased from 4.1±0.9 m/s to 1.7±0.4 m/s (P<0.001). Pacemakers were required in 2 (5.3%) patients. The median follow-up time was 27.5 (23.0, 87.5) d, with a follow-up rate of 100.0%. The mean aortic gradient was 8.0 (7.0, 10.8) mm Hg and peak aortic jet velocity was 2.0±0.3 m/s, showing significant improvement compared with those in the preoperative period (P<0.001). No severe aortic regurgitation or paravalvular leak was observed. There was no serious cardiovascular adverse event or reoperative event during the study period. Conclusion    Transcatheter aortic valve replacement with the domestic Renatus® balloon-expandable valve system is a safe and effective procedure for selected patients with severe aortic stenosis who are at high risk or not candidates for surgical aortic valve replacement.