Ventricular diastolic function of ankylosing spondylitis patients by using conventional pulsed wave Doppler, myocardial performance index and tissue Doppler imaging

A meta-analysis of left ventricular dysfunction in ankylosing spondylitis

Ankylosing spondylitis (AS) is a chronic inflammatory arthritis affecting the spine, presenting a considerable morbidity risk. Although evidence consistently indicates an elevated risk of ischemic heart disease among AS patients, debates persist regarding the likelihood of these patients developing left ventricular dysfunction (LVD). Our investigation aimed to determine whether individuals with AS face a greater risk of LVD compared to the general population. To accomplish this, we identified studies exploring LVD in AS patients across five major databases and Google Scholar. Initially, 431 studies were identified, of which 30 met the inclusion criteria, collectively involving 2933 participants. Results show that AS patients had: (1) poorer Ejection Fraction (EF) [mean difference (MD): -0.92% (95% CI: -1.25 to -0.59)], (2) impaired Early (E) and Late (atrial-A) ventricular filling velocity (E/A) ratio [MD: -0.10 m/s (95% CI: -0.13 to -0.08)], (3) prolonged deceleration time (DT) [MD: 12.30 ms (95% CI: 9.23-15.36)] and, (4) a longer mean isovolumetric relaxation time (IVRT) [MD: 8.14 ms (95% CI: 6.58-9.70)] compared to controls. Though AS patients show increased risks of both systolic and diastolic LVD, we found no significant differences were observed in systolic blood pressure [MD: 0.32 mmHg (95% Confidence Interval (CI): -2.09 to 2.73)] or diastolic blood pressure [MD: 0.30 mmHg (95% CI: -0.40 to 1.01)] compared to the general population. This study reinforces AS patients' susceptibility to LVD without a notable difference in HTN risk.

The Prevalence of Cardiac Diseases in a Contemporary Large Cohort of Dutch Elderly Ankylosing Spondylitis Patients-The CARDAS Study

Objectives: The aim of the present study was to determine the prevalence of specific cardiac manifestations, i.e., conduction disorders, valvular disease and diastolic left ventricular (LV) dysfunction, in a large cross-sectional controlled cohort of elderly ankylosing spondylitis (AS) patients. Methods: This cross-sectional study assessed the prevalence of valvular disease, conduction disorders and LV dysfunction in 193 randomly selected AS patients compared with 74 osteoarthritis (OA) controls aged 50–75 years. Patients underwent conventional and tissue Doppler echocardiography in combination with clinical and laboratory assessments. Multivariate regression analyses were performed to compare the odds of mitral valve regurgitation (MVR) and aortic valve regurgitation (AVR) between AS patients and OA controls. Results: The prevalence of diastolic dysfunction was trivial and comparable in AS patients compared to controls (respectively, 4% and 3%) and had no further clinical relevance. In addition, the prevalence of conduction disturbances was similar in both groups, with little clinical relevance, respectively 23% vs. 24%. The prevalence of AVR was significantly higher in AS patients compared to the controls, respectively 23% (9% trace, 12% mild, 1% moderate, 1% severe, 1% prosthesis) vs. 11%, p = 0.04. After correcting for age, sex and CV risk factors, AS patients had an odds ratio of 4.5 (95% CI 1.1–13.6) for AVR compared to the controls. In contrast, the prevalence values of MVR were similar and mostly not clinically relevant in AS patients and controls, respectively 36% and 32% and p = 0.46. Conclusion: The prevalence of diastolic LV dysfunction and conduction disorders was mostly not clinically relevant, and similar in AS patients and controls. However, AS patients had an up to five times increased odds to develop AVR compared to controls. Therefore, echocardiographic screening of elderly (50–75 years) AS patients should be considered.

Echocardiographic and Electrocardiographic Findings in Patients with Ankylosing Spondylitis without Cardiovascular Risk Factors

Background: Ankylosing spondylitis (AS) is a chronic inflammatory condition associated with more cardiac manifestations than those in the normal population. In this study, we sought to determine the prevalence of cardiac involvement in patients suffering from AS without cardiovascular risk factors.

Methods: The present case-control study, conducted in 2 university hospitals in Tehran from January 2016 to December 2017, recruited 67 patients with AS and 40 age- and sex-matched healthy controls. The diagnosis of AS was based on the classification criteria of the Assessment of SpondyloArthritis International Society. All the participants were examined using transthoracic echocardiography and a standard 12-lead ECG. Baseline characteristics, echocardiographic findings, and ECG features were compared between the AS and control groups using univariate analyses.

Results: The median age was 33.5 (IQR_25-75%: 20.5–59) years in the AS group and 35 (IQR_25-75%: 26–59) years in the control group (P=0.301). The number of patients with left ventricular systolic and diastolic dysfunction was significantly higher in the patients with AS than in the controls (7.5% vs. 20.9%; P=0.067, and 22.9% vs. 5.0%; P=0.026, respectively). The number of individuals with a left-axis deviation and a left anterior fascicular block was significantly higher in the patients suffering from AS than in the control group. The number of patients with aortic valve involvement was comparable between the groups (P=0.332).

Conclusion: The most common cardiac involvement in our patients with AS was left ventricular dysfunction, followed by rhythm disturbances and aortic valve insufficiency. These findings were independent of age, AS severity, and disease duration. Therefore, the implementation of cardiovascular screening can be recommended for patients with AS.

Evaluation of subclinical myocardial dysfunction using speckle tracking echocardiography in patients with radiographic and non-radiographic axial spondyloarthritis

OBJECTIVE

To evaluate whether there is any difference between radiographic axial spondyloarthritis (r-axSpA), also termed ankylosing spondylitis (AS), and non-radiographic (nr-) axSpA, with respect to subclinial myocardial dysfunction using speckle tracking echocardiography (STE).

METHODS

This was a cross-sectional case control study. We included 72 patients with AS, 38 patients with nr-axSpA, and 56 age-matched healthy subjects. Patients with cardiac disease and cardiac risk factors affecting STE were excluded. The disease burden evaluated by the BASDAI, BASFI, BAS-G, and ASAS-HI scores were comparable in both the r- and nr-axSpA groups. A detailed echocardiographic examination including the M-mode, Doppler, and STE was applied to whole study population.

RESULTS

Duration of the disease, the use of an anti-TNFα agent, and CRP levels were higher in patients with AS. Although the AS, nr-axSpA, and control groups had similar ejection fraction values (59±5.2, 60±4.6, 60±4.6, respectively, and p=0.499), the global longitudinal peak systolic strain (GLS) (20.5±3.3, 21.1±3.5, and 22.3±2.4, respectively, and p<0.05) was different between the groups. In a post-hoc analysis, GLS was not different between the nr-axSpA and control groups, and it was significantly lower in patients with AS. In the univariate analysis, peripheral arthritis (p=0.035) and age (p=0.032) were correlated with GLS. A multivariate regression analysis demonstrated that peripheral arthritis (p=0.009) was the only independent GLS predictor.

CONCLUSION

Subclinical myocardial dysfunction as assessed by GLS was present in AS, but not in nr-ax-SpA patients. Thus, GLS could be used as a differentiating factor between radiographic and nr-axSpA patients.

Evaluation of various endothelial biomarkers in ankylosing spondylitis

Atherosclerosis has been shown to be increased in chronic inflammatory diseases including ankylosing spondylitis (AS). Impaired endothelial function, the first step in atherosclerosis, may be reflected by changes in various endothelial biomarkers of hemostasis and the release of several cellular adhesion molecules or cytokines. In this study, we investigated changes in the levels of various possible markers with regard to disease activity and treatment regimen with/without anti-TNF-α drugs. Fifty-six AS patients (44 males) and 27 controls (19 males) with no known cardiovascular risk factors were included in the study. Spinal mobility was assessed by the Bath Ankylosing Spondylitis Metrology Index, and patients were evaluated with the Bath Ankylosing Spondylitis Functional Index and the Bath Ankylosing Spondylitis Disease Activity Index. Cytokines and various endothelial biomarkers were measured in serum samples using commercially available ELISA kits. Age, sex, BMI, waist circumference, fasting glucose, MAP, lipids are all similar between patients and controls. von Willebrand factor (vWF), soluble thrombomodulin (sTM), and urotensin (UT-II) were found to be significantly higher in the sera of the patients compared to the controls. Treatment with anti-TNF-α compared to conventional therapy and disease activity in AS patients seemed to have no effect on the blood levels of UT-II, sTM, CD146, vWF, plasminogen activator inhibitor-1, tissue plasminogen activator, or the thrombin-antithrombin complex. The increased UT-II, sTM, and vWF in AS patient sera regardless of treatment and disease activity suggest an increased tendency for atherosclerosis.