Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Aug 2012
Pleural effusion decreases left ventricular pre-load and causes haemodynamic compromise: an experimental porcine study.
Although pleural effusion is a common complication in critically ill patients, detailed knowledge is missing about the haemodynamic impact and the underlining mechanisms. The aim of this study was to evaluate the haemodynamic effect of incremental pleural effusion by means of invasive haemodynamic parameters and transthoracic echocardiography. ⋯ Incremental volumes of unilateral pleural effusion induced a significant haemodynamic impact fully reversible after drainage. Pleural effusion causes a significant decrease of left ventricular pre-load in a diverse picture of haemodynamic compromise.
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Acta Anaesthesiol Scand · Aug 2012
Clinical TrialHigh-resolution MRI demonstrates detailed anatomy of the axillary brachial plexus. A pilot study.
Axillary block is the most commonly performed brachial plexus block and may be guided by nerve stimulation or ultrasound. Magnetic resonance imaging (MRI) has proven to be beneficial in presenting anatomy of interest for regional anaesthesia and in demonstrating spread of local anaesthetic. The aim of this pilot study was to demonstrate the anatomy as shown by MRI of the brachial plexus in the axillary region. ⋯ Clinical high-field 3.0 Tesla MRI scanner gives good visualization of brachial plexus in the axilla. The superior ability to detect local anaesthetics after it has been injected and the multiplanar imaging capability make MRI a useful tool in studies of the brachial plexus.