There are instances in the operating room, however, where postural changes may induce a hemodynamic response that might serve as a diagnostic maneuver of fluid responsiveness.
However, these interventions may impact the pulmonary circulation and induce hemodynamic and respiratory effects, which in turn may be critical in case of pulmonary hypertension (PHT).
Dexamethasone (DEX) is demonstrated to have anti-inflammatory properties and known to induce hemodynamic improvement in sepsis and septic shock.
Exercise tolerance testing with cycle ergometry to induce hemodynamic response measured with duplex Doppler A/B ratio of the umbilical artery could unmask latent vascular pressor hypersensitivity.
Precipitating factors, such as sexual activity, may induce vascular changes with profound hemodynamic fluctuations, which may trigger the pain if an arterial narrowing is present.
It is known that 80% of brain-dead patients have hemodynamic instability and that many factors may induce real or relative hypovolemia, such as diabetes insipidus, adrenal insufficiency, and sepsis [ 23].
However, in patients with AHF in whom cardiac reserve is reduced, inappropriate vasodilatation may induce a steep reduction in BP, resulting in hemodynamic instability, ischemia, renal failure, and sometimes frank shock.
But high PEEP may induce right ventricular (RV) dysfunction which may severely impair hemodynamic.
Infrarenal aortic cross-clamping (ACC) induces hemodynamic disturbances that may affect respiratory-induced variations in stroke volume and, therefore, affect the ability of dynamic parameters such as pulse-pressure variation (PPV) to predict fluid responsiveness.
Locomotion may induce activity in neuromodulatory circuits that might enhance cortical function or plasticity (Carcea and Froemke, 2013), and it may also produce hemodynamic changes that might affect the operation of the cortical circuit (Seifert and Secher, 2011).
