Erratum
After publication of this supplement abstract below in [1], it was brought to our attention that for abstract P95 all the authors should have the following affiliation: Internal Medicine, Ahmadi Hospital, Kuwait Oil Company, Ahmadi, Kuwait.
P95 B-lines on chest ultrasound predicts elevated left ventricular diastolic pressures
Z. Bitar1, O. Maadarani2, R. Al Hamdan2
1Hôpitaux universitaires Paris-Sud, Hôpital de Bicêtre, Inserm UMR S_999, Univ Paris-Sud, Le Kremlin-Bicêtre, France; 2zouheir bitar, Fahahil, Kuwait
Introduction: We investigated the relationship between the ultrasonic B profiles and Spectral tissue Doppler echocardiography (E/E’ ratio), a non-invasive surrogate for left ventricular diastolic pressures, in patients presenting with suspicion of acute pulmonary edema.
Methods: This is a prospective observational study of 61 consecutive patients presenting with acute pulmonary edema and B - profile detected by echocardiography with a 5 MHz curvilinear probe. The Filling pressure of the left ventricle considered high when E/E’ is equal or > 15 or when value between 9 and 14 with ultrasound chest B pattern. The filling pressure is considered normal if E/E’ is equal or below 8 or the value between 9 and 14 with A-line pattern (1).
Results: Sixty-one participants were included (49.2% male, with a mean age 66.8). The mean E/E’ level in the patients with B-profile was (20.8), compared with the mean level in the patients with an A-profile of (8.2) (p = 0.003). Based on the value of E/E’, the sensitivity and specificity (including the 95% confidence interval) were determined and are shown in Table 13. The systolic function in the subjects with a B-profile was below 50% in 74.3% of the subjects. All the subjects with B profile and systolic function > 50% had elevated NT-proBNP and E/E’ > 15.
Table 13
Chest ultrasound profiles based Spectral tissue Doppler echocardiography E/E’
Thoracic ultrasound profile | High E/E’ | Normal E/E’ | Total |
|---|---|---|---|
B- Profile | 46 | 1 | 47 |
A -profile | 4 | 10 | 14 |
Total | 50 | 11 | 61 |
Variable | Value | 95% confidence interval | |
Sensitivity | 0.92 | 0.812 to 0.968 | |
Specificity | 0.91 | 0.623 to 0.98 | |
Positive predictive value | 0.97 | 0.889 to 0.996 | |
Negative predictive value | 0.714 | 0.454 to 0.883 |
Conclusions: Detecting the B-profile in lung ultrasound is highly sensitive and specific for elevated left ventricular diastolic pressures in patients with acute pulmonary oedema.
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