Exercise and regional lung function in normal adult Egyptians using radioactive Xe 133

ABSTRACT

15 normal adult subjects were submitted to regional lung study by the radioactive gas Xe[133] after tolerable exercise of 50 Watts for 7 minutes. All persons showed more or less evening of the distribution of the perfusion with loss of the normal gradient from upper to lower zones. Ventilation was also remodelled to a better ventilation in the left lung than the right lung. The ventilation/perfusion ratio at regional levels was consequently reshaped