Table 2

Change in haemodynamics from supine to each angle of tilt

Tilt angle % HR % SBP % DBP % CO % SV % FBF
45°11.111.920.3−17.2−27.7−19.3
60°16.92-150 13.326.9−17.2−30.7−36.22-150
75°18.82-150 15.427.1−20.3−34.3−35.82-150
90°20.92-150 21.42-150 2-151 32.62-150 −18.8−33.7−46.12-150
  • 2-150 Significant difference from 45°;

  • 2-151 significant difference from 60° (p < 0.05).

  • % CO, percentage change in cardiac output after tilting; % DBP, percentage change in diastolic blood pressure after tilting; % FBF, percentage change in forearm blood flow after tilting; % HR, percentage change in heart rate after tilting; % SBP, percentage change in systolic blood pressure after tilting; % SV, percentage change in stroke volume after tilting.