Clinical Features of Post Cardiac Injury Syndrome Following Catheter Ablation of Arrhythmias: Systematic Review and Additional Cases.

BACKGROUND

Post cardiac injury syndrome (PCIS) is a troublesome but not uncommon complication following catheter ablation of arrhythmias. We aimed to study the clinical features of ablation-associated PCIS.

METHODS

For this purpose, we conducted a computerised literature search that identified 19 published cases, and we additionally included another 2 new cases from our centres. Twenty-one cases of PCIS following ablation were analysed.

RESULTS

Among the 21 cases, PCIS most commonly occurred after atrial flutter/fibrillation (AFL/AF) ablation (71.4%), followed by atrioventricular re-entrant tachycardia (AVRT) ablation (9.5%), atrioventricular node (AVN) ablation (9.5%), atrioventricular nodal re-entrant tachycardia (AVNRT) ablation (4.8%) and ventricular tachycardia (VT) ablation (4.8%). Thirty-eight per cent of PCIS was suggested to be secondary to cardiac perforation. Specific symptoms or features include pleuritic chest pain (76.2%), fever (76.2%), elevated markers of inflammation (76.2%), pericardial effusion (90.5%), pleural effusion (71.4%) and pulmonary infiltrates (28.6%). Interestingly, all the six cases with pulmonary infiltrates were following AFL/AF ablation (6/15, 40%). Serious clinical manifestations include cardiac tamponade, massive pleural effusion with hypoalbuminaemia and hyponatraemia, and massive pulmonary infiltrates with hypoxaemia. Notably, empiric antibiotic therapy was used in seven cases including five with pulmonary infiltrates but failed to work. No mortality occurred during a mean follow-up of 4.1±5.3 (1 to 19) months.

CONCLUSIONS

Catheter ablation of AFL/AF was most commonly involved in ablation-associated PCIS. Pulmonary infiltrate is an important feature of PCIS following AFL/AF ablation and may be misdiagnosed as pneumonia. Although PCIS is troublesome and even dangerous, it does carry a benign prognosis.