[Analysis of the electrocardiographic findings in 288 patients with acute pulmonary thromboembolism].

OBJECTIVE: To research variety orderliness of electrocardiogram in patients with acute pulmonary thromboembolism (PET). METHOD: 288 patients with first episode of acute PET were included in the study: There were 136 patients with massive and sub massive PTE (group A) and 152 with non-massive PET (group B). Thrombolytic agents were used for patients in group A and anticoagulant agents for those in group B. The electrocardiographic patterns of these patients were observed on 6 time points during the course. The rate of electrocardiographic abnormalities and differences between groups were analyzed. RESULT: A high rate of S(I)Q(III)T(III) change was observed, 32.4% (44/136) in group A and 21.7% (33/152) in group B. Q(III), T(III), and S(I)T(III) were also very common. Negative T-waves in precordial leads were present in 77.8% (105/136) of patients in group A, and 52.0% (79/152) in group B. The amplitude of R(aVR) and S(V5) was decreased gradually and regularly after treatment. The highest rate of left axis deviation was 47.06% in group A and 30.26% in group B, the difference being significant between the 2 groups. The occurrence of right axis deviation was lower, 16.2% (22/136) in group A and 15.1% (23/152) in group B, with no significant difference. CONCLUSION: The electrocardiographic findings were useful in the early diagnosis of PTE.

[Surveillance program set for influenza A virus (H1N1) in children in Taiyuan, China, 2005-2006].

OBJECTIVE: To study the epidemic situation and dominant strain of influenza in children with acute respiratory infection (ARI) during Flu season from Oct. 2005 to Mar. 2006 in Taiyuan. METHODS: Madin-darby canine kidney (MDCK) cell culture and hemagglutination inhibition (HI) assay were used to isolate and identify type A influenza viruses (H1N1 and H3N2) and B influenza viruses from clinical samples collected from outpatients who visited the Department of Pediatric because of ARI from Oct. 2005 to Mar. 2006. Oct. 2005 and Mar. 2006, we collected 415 blood samples from children and adults to detect the influenza virus antibody titers by HI test to exclude respiratory diseases. RESULTS: 7 strains of H1N1 were isolated from 87 clinical specimens, with a positive rate of H1N1 as 8.04%. Out of 415 blood samples being collected, the positive rates and the geometric mean titer of H1N1 antibody Mar. 2006 were significantly higher in 0-3, 3-7 and 7-18 year-olds than Oct.2005. CONCLUSION: H1N1 epidemic influenza did occur among children in winter and spring of 2005--2006 in Taiyuan city.