Clinical characteristics and prognosis differences between isolated right and left ventricular myocardial infarction in the Chinese population: a retrospective study.

Background and aims: Acute myocardial infarction (AMI) is divided into left ventricular myocardial infarction (LVMI) and right ventricular myocardial infarction (RVMI) according to the regions of myocardial ischemic necrosis. Clinical characteristics, treatment strategies, and prognosis differences between isolated RVMI and LVMI have not been well characterized. This study aimed to explore this difference of patients with isolated RVMI and LVMI. Methods: This retrospective cohort study included 3,506 patients hospitalized with coronary angiography diagnosed type 1 myocardial infarction (MI). Characteristics of admission and treatment strategies were compared in patients with isolated RVMI and LVMI. COX proportional hazards models with and without inverse probability of treatment weighting (IPTW) adjustment were performed to estimate the difference in all-cause and cardiovascular mortality between the two groups. Results: In this retrospective study, we found the frequency of isolated RVMI was significantly lower in the population than that of isolated LVMI (406 (11.6%) vs 3,100 (88.4%)). Patients with isolated RVMI have similar age, sex, and comorbidities to the patients with isolated LVMI. However, patients with isolated RVMI have lower heart rate and blood pressure, but higher rates of cardiogenic shock and atrioventricular block. It is noteworthy that patients with isolated RVMI are more likely to be complicated with the multivessel lesion. Patients with isolated RVMI have lower risk of all-cause mortality (HR 0.36; 95% CI [0.24-0.54], p < 0.001) and cardiovascular mortality (HR 0.37; 95% CI [0.22-0.62], p < 0.001) than patients with isolated LVMI. Conclusions: This study showed that patients with isolated RVMI and LVMI have similar baseline characteristics. However, the clinical manifestations were different in the isolated RVMI and LVMI patients. This study revealed a better prognosis of isolated RVMI patients compared to isolated LVMI, which indicates the ischemic region could be considered in AMI risk stratification models for better assessment of risk for adverse clinical events.

Prenatal anxiety associated with male child preference among expectant mothers at 10-20 weeks of pregnancy in Xiangyun County, China.

OBJECTIVE: To examine the relationship between male child preference and maternal prenatal psychological distress among expectant mothers from Xiangyun County, Yunnan Province, China. METHODS: Child gender preference, state-trait anxiety and depression, relationships with the husband and mother-in-law, and self-esteem were measured in a sample of 198 women between 10 and 20 weeks of pregnancy. Multivariate logistic regression analysis was used to identify risk factors for prenatal anxiety. RESULTS: Prenatal anxiety was correlated with male child preference (r=0.15, P<0.05), maternal age (r=-0.17, P<0.05), level of education (r=-0.23, P<0.01), self-esteem (r=-0.36, P<0.01), relationship with mother-in-law (r=-0.34, P<0.01), and relationship with husband (r=-0.35, P<0.01). Significant relationships were maintained in multivariate analysis that included gender preference, maternal education, pregnancy anxiety, self-esteem, number of people in the household, and relationship with husband as predictors (adjusted r(2)=0.28, P<0.001). CONCLUSION: Male child preference was associated with prenatal anxiety in this sample. Younger maternal age, lower self-esteem, lower level of education, worse relationship with husband, and less family cohesiveness were also related to prenatal anxiety. Expectant mothers experienced prenatal anxiety when there was strong family preference for sons.

Dreams of tigers and flowers: child gender predictions and preference in an urban mainland Chinese sample during pregnancy.

In an urban, mainland Chinese sample, we investigated expectant mothers' stated gender preference for a boy or girl child, their conjectures on the fetal gender, the culture-specific beliefs for making their predictions, and their relations to sociodemographic variables. A total of 174 women were interviewed at 12-19 weeks gestation. Among 84 women who made a prediction on gender, 56 (67%) thought they were carrying a boy, and 28 (33%) expected a girl. The most frequent reasons cited for their speculation were personal feelings (36%), food/taste preference (13%), feedback from others (13%), somatic responses (13%), and dreams (7%). Out of 63 women who stated a wish for a boy or girl child, 45 (71%) wished for a girl and 18 (29%) wished for a boy. Women with undergraduate or graduate degrees were more likely to indicate a preference for boys. Older expectant mothers were more likely to report that they thought they were carrying boys. In conclusion, the majority of the women did not state a distinct choice for gender of the child. When they expressed a gender preference, more mothers expressed a desire to have a girl. However, boy child conjectures were more frequent than girl child conjectures. Greater boy child preference and prediction among the most highly educated and older expectant mothers might be reflective of implicit social status in having sons in urban China.