Abstract
2016 guidelines for the echographic evaluation of left ventricular filling pressure (LVFP) proposed a single algorithm with limited number of criteria (E/A ratio, tricuspid regurgitation velocity, left atrial volume index and average E/e′) mainly related to left atrial pressure. Pulmonary venous flow analysis, evaluating more specifically left ventricular end diastolic pressure (LVEDP) has been withdrawn. We aim to evaluate the proportion of patients diagnosed with normal LVFP according to 2016 recommendations, despite an abnormal pulmonary venous flow profile suggesting high LVEDP. We prospectively studied patients with stable ischemic cardiomyopathy and aortic stenosis, before cardiac surgery. Extensive echocardiography was performed including pulmonary and mitral A wave durations. We included 76 patients (mean age 72 ± 10 years, 78% were men), 37 (49%) with aortic stenosis and 22 (29%) with ischemic cardiomyopathy. Mean left ventricular ejection fraction was 67 ± 11%. Applying recommendations, 58 patients had normal LVFP and 15 patients had high LVFP. Among the 58 patients with normal LVFP, 26 patients had Apd–Amd duration > 30 ms highly suggestive of high LVEDP. These patients had higher LV mass (112 ± 30 g/m2 vs. 86 ± 20 g/m2, p = 0.004) and shorter A wave duration (120 ± 13.6 ms vs. 132 ± 16.5 ms, p = 0.006) as compared to the remaining 15 patients with concordant evaluation (normal LVFP and normal Apd–Amd). In the present study, we found that 26/58 patients with low LVFP according to the 2016 recommendations had Apd–Amd suggestive of high LVEDP. Pulmonary venous flow should be added to the algorithm, particularly in patients with unexplained symptom, high LV mass or truncated mitral A wave.
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Dr Michaud Matthieu declares that he has no conflict of interest. Dr Maurin Vincent has received a speaker honorarium from Novartis. Dr Simon Marc declares that he has no conflict of interest. Dr Chauvel Christophe declares that he has no conflict of interest. Dr Bogino Emmanuel declares that he has no conflict of interest. Dr Abergel Eric has received a speaker honorarium from GE ultrasound, Novartis.
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Appendices
Appendix 1
Woman patient, 71 years old, presenting with calcific aortic stenosis (mean trans valvular gradient 92 mmHg, aortic valve area 0.56 cm2 or 0.36 cm2/m2), LVEF 82%.
1-Normal LA surface with 17 cm2 measured in apical four chamber view, LAVi 31 ml/m2 assessed by Simpson biplane technique.
2-E/A ratio 0.8 with E = 64 cm/s, mitral A wave duration (Amd) 106 ms, to note amputation of A wave.
3/4-E′ lateral and septal=7cm/s average E/E′ = 9.
5-TRV = 2.58 m/s.
6-Pulmonary A reversal duration (Apd) = 207 ms, Apd–Amd =101 ms, note the particular amplitude of A retrograde wave duration (> 70 cm/s).
Appendix 2
Man patient, 79 years old, presenting an aortic stenosis due to calcified bicuspid valve (mean trans valvular gradient 45 mmHg, aortic valve area 0.82 cm2 or 0.44 cm2/m2), normal LVEF (74%).
1-Normal LA volume index (23 ml/m2 assessed by Simpson biplane technique).
2-E/A ratio = 0.7 with E wave = 64 cm/s, A wave duration = 114 ms.
3 and 4-Lateral E′ =10cm/s, septal E′ =7 cm/s, average E/E′ = 8.
5-Maximal tricuspid regurgitation velocity = 2.59 m/s.
6-Pulmonary reversal A wave duration = 165 ms, Apd–Amd = 51 ms.
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Michaud, M., Maurin, V., Simon, M. et al. Patients with high left ventricular filling pressure may be missed applying 2016 echo guidelines: a pilot study. Int J Cardiovasc Imaging 35, 2157–2166 (2019). https://doi.org/10.1007/s10554-019-01667-w
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DOI: https://doi.org/10.1007/s10554-019-01667-w