Objective To study lexicological effects of sulfur dioxide (SO2) on reproductive system of male mammals. Methods After dynamic 7-day inhalation of SO2 at various concentrations, such as (22

Objective To analyze the clinical correlation between EB virus-induced pharyngitis with gastrointestinal symptoms and mesenteric lymphadenitis in children , and to explore the value of EBV-VCA-IgM dectection and color Doppler ultrasound in the diagnosis of EB virus-induced mesenteric lymphadenitis. Methods 356 children with pharyngitis complicated by gastrointestinal symptoms were prospectively analyzed. 162 patients who had a postive result of EBV-VCA-IgM detection by ELISA were assigned to a study group , while another 194 patients who had a negative result were assigned to a control group. The size , number and blood flow of mesenteric lymph nodes were determined by color Doppler ultrasound in both groups. The data were counted , compared and analyzed. Results 43 children had mesenteric lymphadenitis in the study group , so had 11 in the control group. There was a significant difference between the two groups (P < 0.01). Conclusions Children with pharyngitis complicated by gastrointestinal symptoms may suffer from mesenteric lymphadenitis. ELISA for EBV-VCA-IgM detection and color Doppler ultrasound have certain clinical value in the diagnosis of mesenteric lymphadenitis indcued by EB virus infection.

BACKGROUNDUnderlying diseases have a statistically significant positive correlation to sudden death. However, sudden unexplained death (SUD) is different from sudden death, as there is no clinical evidence to support the sudden death due to the original underlying disease, nor a lethal pathological basis to be found during autopsy. In addition, SUD are more common in young, previously healthy individuals, usually without any signs of disease, with no positive lesions found after autopsy. Therefore, a causal relationship between SUD and the underlying disease needs to be further explored. This study aimed to explore the role that common underlying diseases play in patients with SUD and to reveal the correlation between them.

METHODSThe medical records, history and case information of 208 patients with SUD were collected for the survey. All these SUD occurred in the emergency room of Peking University Third Hospital from January 2006 to December 2009. The patients were stratified by with and without common underlying diseases. To examine possible associations between the underlying diseases and the cause of unexplained sudden death, the chi-squared and Fisher's exact tests were used.

RESULTSAmong the 208 patients, 65 were diagnosed with common underlying diseases while 143 were not. Within these two groups, there were 45 patients for whom the clear cause of death was determined. However, there were no statistically significant differences or strong associations (χ(2) = 1.238, P > 0.05) between the 11 patients with (16.90%) and 34 without (23.78%) common underlying disease among these 45 patients. We also found that occurrence of the common underlying diseases, such as neurological system, cardiovascular and pulmonary system diseases, are not statistically significant (P > 0.05) in the diagnosis of the SUD.

CONCLUSIONCommon underlying diseases make no obvious contributions to SUD and are not useful in diagnosing the underlying reasons for death.

Adolescent ; Adult ; Aged ; Cause of Death ; Death, Sudden ; epidemiology ; etiology ; Female ; Humans ; Male ; Middle Aged ; Young Adult

Aged ; Female ; Humans ; Myocardial Infarction ; diagnosis ; Polycythemia Vera ; complications