Shaffer s grading

Before HD

After HD

Grade 4 and Grade 3

15.09 mmHg ± 7.04 mmHg

14.05 mmHg ± 5.04 mmHg

Grade 2

16.05 mmHg ± 7.04 mmHg

17.05 mmHg ± 7.07 mmHg

Grade 1

18 mmHg ± 7 mmHg

21 mmHg ± 9 mmHg