Electrocardiographic impacts of lung resection

Area of Science:

• Cardiology
• Thoracic Surgery
• Medical Imaging

Background:

• Electrocardiographic (ECG) changes following lung resection are not extensively studied in large adult populations.
• Understanding these ECG alterations is vital for accurate postoperative patient assessment.

Purpose of the Study:

• To investigate and characterize the electrocardiographic (ECG) changes occurring after various types of lung resection surgeries.
• To establish a better understanding of the dynamic ECG modifications in the early, intermediate, and late postoperative periods.

Main Methods:

• Retrospective review of medical records for 117 patients who underwent lung resection (segmentectomy, lobectomy, or pneumonectomy).
• Comparison of clinical course and ECG parameters during acute (<1 month), intermediate (1 month-1 year), and late (>1 year) postoperative phases.

Main Results:

• Acute postoperative phase showed increased heart rate, P-wave duration/dispersion, atrial arrhythmias, and ST-T changes.
• Significant alterations in P-vector and QRS-vector were observed, correlating with anatomical displacements.
• Left pneumonectomy demonstrated characteristic QRS-vector shifts over time, and ECGs could mimic myocardial infarction.

Conclusions:

• Recognizing expected ECG findings post-lung resection is essential to prevent misinterpretation as acute cardiopulmonary events.
• Dynamic ECG changes correlate with anatomical shifts in the thorax after surgery, necessitating careful interpretation.