Objective To investigate the cardiac affects of esophageal dilatation and stent implantation and its possible pathogenic mechanism. Methods One hundred patients who underwent esophageal dilation or stent implantation had investigeted with Hotter tape recorder, vectorcardiogram, oxygen saturation and cardiac enzymes checked at the time prior to. during and after the procedure respectively. Results During the procedure, incidence of frequent ventricular premature beats was 66%, paroxysmal ventricular tachycardia 9 cases; frequent atrial premature heats 73 cases, paroxysmal supraventricular tachycardia 21 eases, myocardial ischaemia 17 cases and hypoxia 69 eases with significant differences comparing with those prior to the procedure(9 cases; 0 case; 7 cases; 0 case; 0 case and 9 eases respectively) but all above changes as well as cardiac enzymes recorded 24 hours after the procedure had no statistical significance comparing with those prior to the procedure. Conclusion There is a high incidence of cardiac arrhythmia and myocardial ischaemia at the time of dilatation and stent implantation. However, most of these changes can subside without intervention 24 hours after the procedure. Pathogenic mechanisms involved may be related to hypoxia duo to the pain provoked by the procedure suggesting close observation is needed during the operation.

Objective To evaluate the endoscopic findings and clinicopathologic characteristics of ischemic colitis and risk factors in older to avoid misdiagnosis. Methods 101 cases with ischemic colitis underwent endosopy within 14 days of onset of symptom in center of our hospital were retrospectively reviewed for their endosopic findings , clinicopathologic characteristics and risk factors. Results The common features of 101 cases included abdominal pain,diarrhea,or bloody diarrhea and hematochezia. Endoscopic visualization of mild ischemic colitis included pete-chial hemorrhages,edematous and fragile mucosa,segmental erythema,scattered erosion,longitudinal ulcerations,and sharply defined segment of involvement. Stricture ischemic colitis was characterised by full-thickness mucosa, lumens stricture and haustrations disappeared. Clinicpathological examination revealed mucosal inflammation accompanied by erosion,granulation tissue hyperplasis and gland atrophy,lamina propria hemorrhage,especially macrophages with he-mosiderin pigmentation in submucosa. Hypertension pressure, diabetes, atrial fibrilation were risk factors for ischemic colitis ( P < 0.05 ). Conclusion Although there was on specific changes on endoscopic findings and pathologic characteristics , but combined with history, was helpfu in diagnosis of ischemic colitis and reducing the misdiagnosis.

Objective: To analyze the clinical features of perianal condyloma acuminatum in HIV infected men who have sex with men (MSM) and assess the effects of combined treatment of microwave and photodynamic therapy. Methods: Clinical and laboratory data of 260 male patients with perianal condyloma acuminatum were collected and microwave combined with photodynamic therapy was applied on them. Results: The majority of the patients with perianal condyloma acuminatum were young people (243/260). Warts were mainly located in the anus or from the outside to inside of the anus (245/260). Among them, the proportion of warts position of extraanal in HIV-infected group (8/220) was lower than that of non-HIV-infected group (7/40). HPV types 11 (70/118), 6 (44/118) and 16 (40/118) were the most common types of HPV infection. People with HIV infection were more likely to develop high-risk, mixed types HPV infection and multiple HPV infection than those without HIV infection. More than half of the patients (146/260) needed only 1-3 sessions of photodynamic treatments. There was no significant difference in the times of photodynamic treatments and the numbers of photosensitizers required between the HIV-infected and non-HIV-infected groups. The recurrence rate of HIV-infected group (13.6%, 30/220) was also similar to that of non-HIV-infected group (15.0%, 6/40), but far lower than those who underwent microwave therapy alone (45%, 18/40). Conclusions The combination therapy significantly reduced the recurrence rate of perianal condyloma acuminatum in HIV infected MSM.

The outbreak of COVID-19 has spread quickly across 114 countries/territories/areas in six continents worldwide and has been announced as a pandemic by WHO. This study analyzed global COVID-19 epidemiological trends, examined impact of the pandemic on global health security, diplomacy, and social environment in China, and provided short- and long-term strategic policy recommendations for China’s subsequent preparedness and responses.