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September 2, 1974

Effects of Smoking on Digital Blood-Flow Velocity

Author Affiliations

From the Department of Surgery, Wayne State University School of Medicine, Detroit (Drs. Sarin and Nickel), and the Veterans Administration Hospital, Allen Park, Mich (Mr. Austin and Drs. Sarin and Nickel).

JAMA. 1974;229(10):1327-1328. doi:10.1001/jama.1974.03230480043027

The ultrasonic Doppler flow meter was used to measure digital blood velocity in two groups of ten male volunteers. In the experimental group, digital blood-flow velocity was measured before and after smoking one cigarette. In the control group, two digital blood-flow velocity measurements were made at the same intervals. Blood-flow velocity remained unchanged in the control group. In the experimental group the Doppler shift was reduced by 40±9% during systole, 48±10% during diastole, and the mean Doppler shift was reduced by 42±6% Since the Doppler shift is proportional to blood-flow velocity, it is concluded that smoking a single cigarette reduces mean blood-flow velocity by 42±6%

(JAMA 229:1327-1328, 1974)