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. Author manuscript; available in PMC: 2021 May 1.
Published in final edited form as: Anaesthesia. 2020 Feb 6;75(5):634–641. doi: 10.1111/anae.14984

Figure 3. Clustered column graph comparing incidence of haemodynamic instability in patients with and without clinically significant stroke volume decrease on induction (defined as a ≥ 10% decrease), for the fluid optimisation (GDFT) and standard (SFT) arms.

Figure 3

Light grey bars represent patients with at least a 10% decrease in SV, dark grey bars represent patients who had less than a 10% decrease in SV. Haemodynamic instability was defined as either an induction MAP < 55 mmHg or a > 30% decrease from baseline. Baseline MAP was defined as the pre-surgical testing MAP baseline for each patient, as this time-point was closest to the pre-induction stroke volumes used. Proportions of patients in each subgroup are indicated above each bar. No significant association was found in either group between incidence of haemodynamic instability and stroke volume change (p = 0.38, GDFT; p = 0.82, SFT). P-values listed for each study arm as comparison was done within each arm between the patient subgroups. GDFT, goal-directed fluid therapy; MAP, mean arterial pressure; SFT, standard fluid therapy; SV, stroke volume.