Valvular Atrial Fibrillation

When some people talk about valvular atrial fibrillation, many people will feel confused and don't know what this word means. In general, atrial fibrillation is divided into two types, one is valvular atrial fibrillation and the other is non-valvular atrial fibrillation. So far, there is no accurate definition of atrial fibrillation in the medical field, and the results obtained by researchers in different fields are also different.

Question 1

To observe the clinical types of ischemic stroke in patients with valvular and non-valvular atrial fibrillation, analyze their related factors, and retrospectively analyze the clinical data of patients with atrial fibrillation and ischemic stroke. Complete medical records were available for 137 patients. According to the type of atrial fibrillation, patients were divided into valvular atrial fibrillation and non-valvular atrial fibrillation, and included in the valvular group and non-valvular group respectively. The types of stroke and related risk factors of patients in the two groups were observed, and the risk factors of stroke in non-valvular atrial fibrillation were screened. Results In the valve group, the most common infarction type was the main cerebral artery infarction, with an incidence of 75.9%. Watershed infarction, lacunar infarction, and other infarctions were less common. In the non-valvular group, watershed infarction was the most common, with an incidence of 48.1%, and trunk infarction occurred in about 24.1%. Lacunar infarction and other types of infarction were less common. The incidence of main stem infarction in the valve group was higher than that in the non-valvular group, while the incidence of watershed infarction was lower than that in the valve group (P < 0.05). The incidence of rapid-type atrial fibrillation in patients with valvular atrial fibrillation was about 79.3%, and 93.1% of patients had an INR of 2-3, which were significantly higher than those in the non-valvular atrial fibrillation group. The incidence of hypertension (71.3%), diabetes (30.6%), carotid artery plaque (52.8%), and hyperlipidemia (47.2%) in the non-valvular atrial fibrillation group were higher than those in the valvular atrial fibrillation group (P < 0.05). Conclusion The clinical classification and pathogenesis of cerebral infarction caused by valvular atrial fibrillation and non-valvular atrial fibrillation are different, and risk management should be carried out according to different risk factors.

Question 2

Other valvular diseases

The incidence of thromboembolic events is lower in aortic valve disease than in mitral valve disease. Aortic valve stenosis is a common valvular disease in clinical practice and often coexists with atrial fibrillation, but there are currently no reports of an increased risk of thromboembolism in such patients. The same is true for aortic regurgitation.

When atrial fibrillation occurs in patients with chronic heart failure, the regurgitation volume of the mitral and tricuspid valves may increase, but there is currently no evidence that the risk of thromboembolism is increased in patients with atrial fibrillation and tricuspid regurgitation.