Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Nov 2010
Pulmonary haemodynamics and right ventricular function during cemented hemiarthroplasty for femoral neck fracture.
Bone cement implantation syndrome (BCIS) is characterised by hypoxia, hypotension and loss of consciousness occurring early after bone cementation. The haemodynamic perturbations during BCIS have not been extensively studied, particularly not in patients with femoral neck fracture. We evaluated the effects of cemented hemiarthroplasty, in these patients, on pulmonary haemodynamics, right ventricular performance, intrapulmonary shunting and physiological dead space. ⋯ Cemented hemiarthroplasty in patients with femoral neck fracture causes a pronounced pulmonary vasoconstriction and an impairment of RV function accompanied by pulmonary ventilation/perfusion abnormalities.
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Acta Anaesthesiol Scand · Nov 2010
Non-invasive monitoring of blood haemoglobin for analysis of fluid volume kinetics.
A commercially available pulse oximeter that reports blood haemoglobin (Hb) concentration is evaluated. This study considers whether this device can provide serial Hb data that would be sufficiently reliable for volume kinetic analysis of infusion fluids. ⋯ Non-invasive measurement of the Hb concentration during volume loading could not provide useful kinetic data for individuals.
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Acta Anaesthesiol Scand · Nov 2010
Maize- or potato-derived hydroxyethyl starches: is there any thromboelastometric difference?
Hydroxyethyl starches (HES) could differ with regard to the origin, and the influence on the coagulation of the raw material is unknown. This study compared the effects of a new potato-derived HES with a maize-derived HES and two crystalloid solutions. ⋯ Maize- and potato-derived HES have similar effects on coagulation. Both the starch preparations tested lead to more severe haemostatic defects than crystalloids, and impairment of fibrin polymerization appears to be a leading determinant of this coagulopathy.