Articles: function.
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Anesthesia and analgesia · May 2014
Observational StudyThe Association Between ASA Status and Other Risk Stratification Models on Postoperative Intensive Care Unit Outcomes.
There is limited medical literature investigating the association between perioperative risk stratification methods and surgical intensive care unit (SICU) outcomes. Our hypothesis contends that routine assessments such as higher ASA physical status classification, surgical risk as defined by American College of Cardiology/American Heart Association guidelines, and simplified Revised Cardiac Index (SRCI) can reliably be associated with SICU outcomes. ⋯ Our study revealed that ASA physical status class is associated with increased SICU length of stay, mechanical ventilation, vasopressor treatment duration, NOD, readmission to ICU, and surgery risk is associated with NOD.
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Anesthesia and analgesia · May 2014
TEG® Functional Fibrinogen Analysis May Overestimate Fibrinogen Levels.
Fibrinogen is of crucial importance in patients with ongoing bleeding. In this study, we compared fibrinogen concentration measured by thrombelastography (TEG®) with fibrinogen plasma concentration determined by Clauss. ⋯ Similar patterns were observed when patients and healthy controls were analysed separately. The fibrinogen level may be overestimated when assessed using TEG® compared with the fibrinogen plasma concentration measured by the conventional method.
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In thalassaemic patients, multiple organ systems may be affected by the disease, blood transfusion, iron overload and chelating therapy. Patients may develop cardiomyopathy, pulmonary hypertension or heart failure requiring pre-operative echocardiography or cardiac catheterisation. Restrictive lung dysfunction is commonly encountered, especially in patients with splenomegaly. ⋯ Cardiovascular depression due to negative inotropic and vasodilating effects of general anaesthesia should be minimised. Neuraxial techniques may also be challenging due to spinal skeletal abnormalities and extramedullary haemopoiesis. A multidisciplinary pre-operative approach, clinical optimisation and a carefully planned strategy are mandatory.
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Autonomic function tests require standardised test conditions. We compared testing under non-standardised and standardised conditions and investigated the agreement between heart and pulse rate variability in 30 subjects with diabetes mellitus. Deep breathing, Valsalva manoeuvre and quick standing tests showed non-standardised reproducibility intraclass correlations (95% CI) of 0.96 (0.82-0.99), 0.96 (0.81-0.99) and 0.75 (-0.98 to 0.94), respectively. ⋯ Reproducibility under standardised conditions was comparable. The mean difference (95% limits of agreement) between heart and pulse rate variability was 0.99 (0.80-1.22) for very low frequency, 1.03 (0.88-1.21) for low frequency and 1.35 (0.84-2.16) for high frequency, with a Spearman's correlation coefficient of 1.00, 0.99 and 0.98, respectively. We demonstrated a high agreement between heart and pulse rate variability and acceptable reproducibility with most autonomic function tests, heart and pulse rate variability.
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Reduced pulmonary arterial compliance (Ca) is a marker of poor prognosis in idiopathic pulmonary arterial hypertension. We tested the hypothesis that pulmonary arterial Ca could be a predictor of outcome in patients with chronic heart failure (CHF). ⋯ Pulmonary arterial Ca is a strong prognostic indicator in patients with CHF with sLVD. Most importantly, its prognostic role is retained in patients with normal pulmonary vascular resistance.