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. 2020 Feb 10;36(2):371-376.
doi: 10.1002/joa3.12309. eCollection 2020 Apr.

Is there any link between vitamin D deficiency and vasovagal syncope?

Songül Usalp  1 , Hatice Kemal  1 , Ümit Yüksek  1 , Belma Yaman  1 , Aziz Günsel  1 , Oğuzhan Edebal  2 , Onur Akpınar  1 , Levent Cerit  1 , Hamza Duygu  1
Affiliations

Is there any link between vitamin D deficiency and vasovagal syncope?

Songül Usalp et al. J Arrhythm. .

Abstract

Background: This study aimed to investigate serum 25[OH]D levels between patients with vasovagal syncope (VVS) diagnosed with head-up tilt table test (HUTT) and age-matched healthy people.

Methods: The study included 75 consecutive patients (32.3 ± 10.7 years), who presented with syncope and underwent HUTT and 52 healthy controls (32.9 ± 14.1 years). HUTT patients were divided into two groups according to whether there was syncope response to the test. Patients underwent cardiac, psychiatric, and neurological investigation. Serum 25[OH]D levels were measured by chemiluminescent microparticle immunoassay method.

Results: There was no difference between the two groups in terms of age, gender, body mass index (BMI), echocardiographic findings (P > .05). Mean serum 25[OH]D (24.5 ± 6.3 vs 20.1 ± 8.8 ng/mL, P = .003) and vitamin B12 levels (436.4 ± 199.2 vs 363.1 ± 107.6 pg/mL, P = .009) was lower in syncope patients when compared to the control group. In correlation analyses, syncope was shown as correlated with the vitamin D (r = -264, P = .003) and vitamin B12 levels (r = -233, P = .009). But, multivariate regression analyses showed that only vitamin D increased risk of syncope [OR: 0.946, 95% CI (0.901-0.994)]. There was no difference in terms of age, gender, BMI, echocardiographic findings between the in HUTT positive (n = 45) and negative groups (n = 29). Only vitamin D level was significantly lower in HUTT positive group (17.5 ± 7.7 vs 24.4 ± 9.1 ng/mL, P = .002). There was no difference among in the vasovagal subgroups in terms of vitamin D level and other features.

Conclusion: Vitamin D and B12 levels were reasonably low in syncope patients, but especially low Vitamin D levels were associated with VVS diagnosed in HUTT.

Keywords: head‐up tilt table test; syncope; vitamin D deficiency.

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Conflict of interest statement

Authors declare no conflict of interests for this article. Written informed consent was obtained from all patients before participating in the study

Figures

Figure 1
Figure 1
Flowchart of the number of patients included in the study
Figure 2
Figure 2
Vitamin D levels between head‐up tilt test (HUTT) positive and negative
See this image and copyright information in PMC

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