The Spectrum of ECG Abnormalities in a Large Cohort of Cardiac Masses.

BACKGROUND: Cardiac masses represent a heterogeneous clinical scenario. Potential electrocardiographic red flags of malignancy remain to be investigated. OBJECTIVES: To describe the spectrum of electrocardiographic abnormalities in a large cohort of cardiac masses and to evaluate potential red flags suggestive of malignancy. METHODS: Observational cohort study of 322 consecutive patients with a cardiac mass and available ECG at Bologna University Hospital. All masses were diagnosed by histological examination or, in the case of cardiac thrombi, by radiological resolution after proper anticoagulant therapy. Multivariable regression analysis was used to assess potential predictors of malignancy among electrocardiographic abnormalities. All-cause mortality at follow-up was evaluated. RESULTS: Of 322 patients, 98 (30.4%) had malignant tumors. Compared with patients with benign masses, those with malignant tumors exhibited a higher heart rate, right axis deviation, greater depolarization, repolarization abnormalities and bradyarrhythmia at presentation. Regarding specific ECG features, a higher heart rate on admission (p=0.014), bradyarrhythmias (p=0.009), ischemic-like repolarization abnormalities (ST-segment deviation, both depression and elevation, and negative T-wave; p<0.001), low voltages (p=0.001) and right axial deviation (0.025) were identified as independent predictors of malignancy. Considering these specific ECG alterations, a malignancy-oriented ECG was associated with higher mortality at follow up (median time of 20.7 months). CONCLUSION: ECG is frequently abnormal in case of malignant cardiac tumors. Some specific electrocardiographic changes are strongly suggestive for malignancy and type of infiltration.

Clinical impact of multimodality assessment of myocardial viability.

Coronary artery disease (CAD) is a prevalent cause of left ventricular dysfunction. Nevertheless, effective elective revascularization, particularly surgical revascularization, can enhance long-term outcomes and, in selected cases, global left ventricular contractility. The assessment of myocardial viability and scars is still relevant in guiding treatment decisions and selecting patients who are likely to benefit most from blood flow restoration. Although the most recent randomized studies challenge the notion of "hibernating myocardium" and the clinical usefulness of assessing myocardial viability, the advancement of imaging techniques still renders this assessment valuable in specific situations. According to the guidelines of the European Society of Cardiology, non-invasive stress imaging may be employed to define myocardial ischemia and viability in patients with CAD and heart failure before revascularization. Currently, several non-invasive imaging techniques are available to evaluate the presence and extent of viable myocardium. The selection of the most suitable technique should be based on the patient, clinical context, and resource availability. This narrative review evaluates the characteristics of available imaging modalities for assessing myocardial viability to determine the most appropriate therapeutic strategy.