Ph. Kingisepp et al., Changes of heart rate and blood pressure in registration of forced respiration flow-volume loop, CLIN PHYSL, 21(2), 2001, pp. 208-213
Changes in heart rate (HR) and finger mean blood pressure (MBP) during regi
stration of the flow-volume loop of forced respiration in healthy young sub
jects were studied. Breathing patterns of performing the flow-volume loop o
f forced respiration (forced respiratory manoeuvre, FRM) as well as the rel
ated responses of cardiovascular parameters in different subjects were foun
d to vary to a large extent. FRM has a remarkable influence on the cardiova
scular system: during FRM the peak values of MBP were 19 +/- 9 mmHg higher
than baseline values and the peak values of HR were 30 +/- 11 beats min(-1)
higher. We conclude that it is essential to pay attention to a remarkable
elevation of blood pressure in functional breathing tests in patients with
high blood pressure.