Objective To investigate the relationship between orthostatic hypotension (OH) and antihypertensive therapy in the elderly hypertensive population.Methods A total of 1174 elderly retired people (849 cases with hypertension and 325 cases without hypertension) in Guangzhou Military Region underwent health physical examination.All people were surveyed by questionnaires.The orthostatic blood pressure and heart rate were measured in supine position after resting for more than 5 minutes and then at 0 and 2 minutes after standing.Comparative analysis was made on the prevalence of OH and the relationship between OH and antihypertensive therapy.Results A significant difference in the prevalence of OH was observed between hypertensive patients and nonhypertensive patients [29.4％ (250/849) vs.15.7％ (51/325),x2 =23.32,P＜0.01].There was no significant difference in the prevalence of orthostatic hypotension in patients with versus without antihypertensive therapy [30.5％ (220/721) vs.23.4％ (30/128),x2 =2.62,P＞0.05].Conclusions Orthostatic hypotension is common observed in elderly hypertensive patients.Antihypertensive therapy may not increase the prevalence of OH.

Objective To investigate the distribution and drug resistance of pathogens in elderly patients with gastric cancer complicated with diabetes mellitus.Methods 367 elderly patients with gastric cancer and diabetes mellitus were selected from the hospital from March 2010 to March 2017.The samples were isolated and cultured.The Gram positive bacteria were tested by GN201,the Gram negative bacteria susceptibility test was carried out by GP,and the drug susceptibility test was carried out by disk diffusion method.Results There were 68 cases of postoperative infection in gastric cancer patients with diabetes mellitus,and 79 strains were isolated and cultured.Among the gram negative bacteria,Escherichia coli,Klebsiella pneumoniae and Pseudomonas aeruginosa were the main pathogens.Among the Gram positive bacteria,Staphylococcus aureus and Staphylococcus epidermidis were the main pathogens.The main Gram negative bacteria,Escherichia coli to ceftazidime with levofloxacin resistance rates were 93.33% and 80.00%;Klebsiella pneumoniae had a higher drug resistance rate for cefoperazone and ciprofloxacin,76.92% and 69.23% respectively;a relatively high rate of Pseudomonas aeruginosa resistant to levofloxacin was 80.00%.Among the gram positive bacteria,the re-sistance rates of Staphylococcus aureus to penicillin and erythromycin were relatively high,respectively 91. 67% and 83.33%.Staphylococcus epidermidis had relatively high resistance rates to penicillin and erythromy-cin,100.00% and 77.78% respectively.Conclusion Gastric cancer complicated by diabetes mellitus elderly patients with postoperative infection of pathogenic bacteria distribution is given priority to with Gram-negative bacteria was the most common in,Pseudomonas aeruginosa,the main pathogenic bacteria of Escherichia coli to ceftazidime with levofloxacin resistant rate of Klebsiella pneumoniae was higher on cefoperazone and ciproflox-acin resistant Pseudomonas aeruginosa,the resistance rate of Pseudomonas aeruginosa to levofloxacin is high, and it is important to apply antibiotics rationally according to drug sensitivity test.

Objective To study the medical imaging findings and the pathological features of hepatic inflammatory myofibroblastic tumor (HIMT) using CT,MRI and histopathology.Methods The CT and MRI findings of 31 patients with HIMT which were confirmed by histopathology on surgically resected specimen were analyzed retrospectively.The location,size,shape,edge,density or signal,and contrast enhancement of these tumors were analyzed.Results The tumors were located in the right liver in 26 patients,in the left liver in 5 patients,and under the hepatic capsule in 27 patients.The tumors were solitary in 28 patients and multiple in 3 patients.The maximum diameter of the tumor ranged from 2.1 cm to 12.5 cm.The average diameter was (3.6 ± 1.2) cm.The tumors were round or oval in 21 patients and irregular in 10 patients.19 patients underwent CT examination and all tumors showed low density,with a CT value which ranged from 5 to 35HU.The average value was (27.6 ±5.3) HU.The density of tumors was homogeneous in 6 patients and inhomogeneous in 13 patients,and among these 13 patients,3 were alveolate.Twenty-one patients underwent MRI scan and all showed a low signal on T1WI,12 patients showed an equal signal and 9 patients showed a slightly higher signal on T2WI.In 6 patients the signals were homogeneous and in 15 patients they were inhomogeneous.On CT and MRI enhanced scans the whole tumor was enhanced in 12 patients,the edge was enhanced in 9 patients,the septum was enhanced in 8 patients and no enhancement was observed in 2 patients.Pathological examination under microscopy observed the presence of proliferation of spindle cells,chronic inflammatory cells which included the proliferation of lymphocytes,plasma cells and collagen fiber formation.The spindle cells had the characteristics of fibroblasts and myofibroblast cells.Immunohistochemical examination showed the wave type protein (Vimentin) was positive in 23 patients,the smooth muscle actin (SMA) was positive in 18 patients,the muscle actin (MSA) and the specificity of junction protein (Desmin) were positive in 12 patients,CD68 was positive in 4 patients,and the ALK,S-100 protein,CDll7 and CD35 were all negative.Conclusions The radiological features of CT and MRI plain scan varied.The patterns of contrast enhancement included full tumor filling,marginal enhancement,compartment enhancement,and no enhancement.The enhanced features varied from mild to moderate enhancement in the arterial phase,further enhancement in the portal phase and mild enhancement in the delayed phase.