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[Effect of noise on birth capability].

The author studied the effect of noise on birth in 132 women working in the metal industry at Valjevo. Of this number 82 women were exposed to increased noise and were included in the experimental group, and 50 employees, working out of the noisy premises, made the control group. A statistically significant number of natural miscarriages, maintenance of pregnancy and small weight of preterm babies, was recorded in the experimental group in comparison to the control group. It is concluded that the noise provoked a constant stress with utero-placental and foeto-placental circulatory disorders resulting in unwanted abortions.