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  • Title: Tissue Doppler evaluation of the effects of major lung resection on cardiac functions.
    Author: Cölkesen Y, Açil T, Findikçioğlu A, Tekin A, Kiliç D, Ozin B, Müderrisoğlu H.
    Journal: Turk Kardiyol Dern Ars; 2009 Jul; 37(5):317-20. PubMed ID: 19875904.
    Abstract:
    OBJECTIVES: The aim of our study was to evaluate the influence of lung resection on cardiac functions by using tissue Doppler echocardiography. STUDY DESIGN: Nineteen consecutive patients (15 males, 4 females; mean age 55+/-8 years) undergoing major lung surgery (16 lobectomy, 3 pneumonectomy) were evaluated in a prospective design. Malignant lung cancer (n=15, 79%) was the major cause for lung surgery. Exclusion criteria were a history of myocardial infarction, angina, atrial fibrillation, valvular heart disease, major arrhythmias, diastolic dysfunction, heart surgery, and FEV1/FVC ratio lower than 60%. Two-dimensional Doppler echocardiography and tissue Doppler imaging (TDI) were performed one or two days before surgery and 4+/-2 weeks postoperatively. RESULTS: Compared to the preoperative measurements, right and left atrial and ventricular dimensions did not differ after surgery (p>0.05). Left ventricular ejection fraction, left ventricular end-systolic and end-diastolic volumes were preserved postoperatively. The following Doppler parameters showed significant changes after surgery: mitral A wave (92+/-23 cm/sec vs. 105+/-27 cm/sec, p=0.005), mitral E/A ratio (1.0+/-0.2 vs. 0.8+/-0.2, p=0.001), tricuspid A wave (65+/-19 cm/sec vs. 80+/-30 cm/sec, p=0.006), and tricuspid E deceleration time (327+/-68 msec vs. 274+/-51 msec, p=0.01). Concerning TDI parameters, there were significant differences in mitral E'/A' ratio (1.0+/-0.4 vs. 0.8+/-0.3, p=0.03) and tricuspid E' wave (9+/-2 cm/sec vs. 8+/-3 cm/sec, p=0.03) after surgery. CONCLUSION: Findings of our study suggest that systolic functions are preserved but diastolic functions are affected after major lung resection in a relatively short time period.
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