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Arrhythmias and Conduction Disturbances in Patients with Systemic Sclerosis-A Systematic Literature Review
Cristina Andreea Vrancianu1,2, Ana Maria Gheorghiu1,2, Dragos Emanuel Popa3
1Faculty of Medicine, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania.
Insights
Arrhythmias are common in Systemic sclerosis (SSc), often linked to heart fibrosis. Biomarkers like NT-pro BNP and turbulence slope can help predict these cardiac events in SSc patients.
Area of Science:
- Cardiology
- Rheumatology
- Autoimmune Diseases
Background:
- Systemic sclerosis (SSc) is an autoimmune condition causing fibrosis and microvascular issues, frequently impacting the heart.
- Arrhythmias contribute significantly to mortality in SSc patients, primarily due to myocardial fibrosis-induced electrical inhomogeneity.
Approach:
- A systematic literature review was conducted across major databases (PubMed, Embase, Web of Science, Scopus) up to April 21, 2022.
- Included full-text English articles focusing on arrhythmias in SSc patients.
Key Points:
- Premature supraventricular and ventricular contractions were the most common arrhythmias.
- Right bundle branch block (RBBB) was the most frequent conduction disturbance.
- Elevated NT-pro BNP levels correlated with various arrhythmias and RBBB; a lower turbulence slope predicted ventricular arrhythmias.
Conclusions:
- Dysrhythmias are prevalent in Systemic sclerosis cohorts.
- Paraclinical and laboratory markers, such as NT-pro BNP and turbulence slope, are valuable for early detection of cardiac complications in SSc.
Abstract:
Systemic sclerosis (SSc) is an autoimmune disease characterized by skin and internal organ fibrosis and microvascular impairment, which can affect major organs, including the heart. Arrhythmias are responsible for approximately 6% of deaths in patients with SSc, and mainly occur due to myocardial fibrosis, which causes electrical inhomogeneity. The aim of this study was to determine the frequency of arrhythmias and conduction disturbances in SSc cohorts, and to identify the characteristics and risk factors associated with the occurrence of dysrhythmias in patients with SSc. A systematic literature review using PubMed, Embase, Web of Science and Scopus databases was performed. Full-text articles in English with arrhythmias as the main topic published until 21 April 2022 were included. Most prevalent arrhythmias were premature supraventricular and ventricular contractions, while the most frequent conduction disturbance was represented by right bundle branch block (RBBB). Elevated concentrations of N-terminal prohormones of brain natriuretic peptides (NT-pro BNP) were associated with numerous types of atrial and ventricular arrhythmias, and with the occurrence of RBBB. A lower value of the turbulence slope (TS) emerged as an independent predictor for ventricular arrhythmias. In conclusion, dysrhythmias are frequent in SSc cohorts. Paraclinical and laboratory parameters are useful instruments that could lead to early diagnosis in the course of the disease.
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