The Relationship Between Patent Foramen Ovale and Unexplained Dizziness: A Prospective Analysis in China

作者：Qian Cao, Yu Shen, Zhuo Hou, Defu Li, Boji Tang, Lijun Xu, Yanping Li · 发表于：Neuropsychiatric Disease and Treatment · 年份：2022 · DOI：10.2147/ndt.s367140 · 被引用次数：8 · 研究领域：Cardiovascular and Diving-Related Complications、Vascular Anomalies and Treatments、Central Venous Catheters and Hemodialysis

Introduction: Patent foramen ovale (PFO) is potentially associated with abnormal embolisms, and it results in mixing of arteriovenous blood when its right-to-left shunt (RLS) emerges. Present studies have found that PFO is a risk factor that can lead to many diseases. However, few studies have examined the relationship between PFO and dizziness. Methods: This study was a large single-center, prospective, controlled study. From March 2019 to March 2021, we recruited patients with dizziness were divided into two groups: “explained” and “unexplained”. All patients were submitted to contrast-enhanced transcranial Doppler ultrasound and screened for PFO. Transesophageal heart ultrasound or right heart catheterization was used to confirm PFO. Additionally, multiple factors were collected and statistical analysis was performed between the two groups. Results: Among the 244 patients included, 123 were in the “explained” group and 121 were in the “unexplained” group. The prevalence of PFO in the “explained” group was 34 (27.4%) compared to 79 (64.7%) in the “unexplained” group. In the “explained” group, 7 were RLS level IV, 6 were level III, 7 were level II, and 14 were level I. For the “unexplained” group, the numbers of patients with levels IV, III, II and I were 27, 26, 12 and 14, respectively. Univariate analysis revealed that PFO (χ 2 = 34.77, P < 0.001) and age (t = − 3.49, P < 0.001) seemed to be potential risk factor candidates for “unexplained” dizziness. In multiple regressi...