[Effect of wind tunnel noise on left ventricular function of heart]

A two-dimensional color doppler ultrasonic imaging instrument was used to detect the left ventricular function in 36 wind tunnel technicians before and after their work in the wind tunnel. The results showed that under the noise between 91.5 and 101.5 dB(A) inside the wind tunnel SV, EF, Fs, MVCF, PE, SE and EAC decreased while SA, PA/PE increased. It indicates that high level wind tunnel noise has certain harmful effect on the left ventricular function of wind tunnel technicians.