Computerized lung sound analysis following clinical improvement of pulmonary edema due to congestive heart failure exacerbations.

摘要: Background Although acute congestive heart failure (CHF) patients typically present with abnormal auscultatory findings on lung examination, sounds are not normally subjected to rigorous analysis. The goals of this study were use a computerized analytic acoustic tool evaluate sound patterns in CHF during exacerbation and after clinical improvement compare profiles those normal individuals. Methods Lung throughout the respiratory cycle was captured using acoustic-based imaging technique. Thirty-two consecutive imaged at time presentation emergency department improvement. Digital images created, geographical area quantitatively analyzed. Results areas vibration energy image without radiographically evident pulmonary edema (67.9±4.7) (60.3±3.5) kilo-pixels, respectively (P <0.05). In (REPE), increased (74.5±4.4) (73.9±3.9) kilo-pixels <0.05), respectively. Vibration decreased REPE following by an average (85±19)% <0.01). Conclusions With exacerbations, there more homogenous distribution energy, as demonstrated image. analysis may be useful track exacerbations. Chin Med J 2010;123(9):1127-1132