The supine systolic blood pressure was similar between the 2 groups (POTS versus control, 111±14 versus 114±13 mm Hg;
P=0.525;
Figure 1B).
Both groups experienced a small increase in systolic blood pressure that was not statistically significant on standing, with no difference between groups (POTS versus control, 123±20 versus 115±14 mm Hg;
P=0.244).
Neither the diastolic blood pressures while supine (POTS 67±8 mm Hg; control 70±9 mm Hg;
P=0.321)
or standing (POTS 79±14 mm Hg; control 77±10 mm Hg;
P=0.636) nor the mean blood pressures while supine (POTS 81±9 mm Hg; control 85±10 mm Hg;
P=0.367) or standing (POTS 94±15 mm Hg; control 90±10 mm Hg;
P=0.417)
were different between the 2 groups.