Dimitrios N Karakitsos

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INTRODUCTION The optic nerve sheath diameter (ONSD) may be increased in brain-injured patients, especially children, with intracranial hypertension. We investigated whether measurements of ONSD correlated with simultaneous noninvasive and invasive measurements of the intracranial pressure (ICP) in brain-injured adults. METHODS Seventy-six critical care(More)
INTRODUCTION Central venous cannulation is crucial in the management of the critical care patient. This study was designed to evaluate whether real-time ultrasound-guided cannulation of the internal jugular vein is superior to the standard landmark method. METHODS In this randomised study, 450 critical care patients who underwent real-time(More)
OBJECTIVE Subclavian vein catheterization may cause various complications. We compared the real-time ultrasound-guided subclavian vein cannulation vs. the landmark method in critical care patients. DESIGN Prospective randomized study. SETTING Medical intensive care unit of a tertiary medical center. PATIENTS Four hundred sixty-three mechanically(More)
OBJECTIVE Cerebral blood flow tests have increasingly been advocated for the confirmation of brain death (BD). Angiography has been considered the gold standard in the diagnosis of BD but is invasive. We validated transcranial color Doppler ultrasonography (TCD) to confirm BD by comparing it to angiography. PATIENTS AND METHODS Forty patients experienced(More)
To investigate the diagnostic performance of Doppler echocardiography (DE) in predicting the outcome of weaning from mechanical ventilation in patients without overt cardiac disease. Fifty critical care noncardiac patients who fulfilled predetermined criteria for weaning underwent DE before and at the end of spontaneous breathing trial (pre-SBT/end-SBT,(More)
OBJECTIVE We investigated whether alterations in the optic nerve diameter (OND) correlated with brain computed tomography (CT) imaging results among patients with brain injury and whether monitoring of OND could predict brain death. PATIENTS AND METHODS We enrolled 54 patients with brain injury (Glasgow Coma Scale < 8) and 53 controls. OND measurements(More)
To provide clinicians with an evidence-based overview of all topics related to ultrasound vascular access. An international evidence-based consensus provided definitions and recommendations. Medical literature on ultrasound vascular access was reviewed from January 1985 to October 2010. The GRADE and the GRADE-RAND methods were utilised to develop(More)
In circulatory failure, fluid administration limited by lung sonography protocol uses lung ultrasound artifacts and makes sequential diagnosis of obstructive, cardiogenic, hypovolemic, and septic shock. Lung ultrasound is used along with simple cardiac and vena cava analysis. Whenever echocardiography cannot be performed, fluid administration limited by(More)
INTRODUCTION An experimental epidural hematoma model was used to study the relation of ultrasound indices, namely, transcranial color-coded-Doppler (TCCD) derived pulsatility index (PI), optic nerve sheath diameter (ONSD), and pupil constriction velocity (V) which was derived from a consensual sonographic pupillary light reflex (PLR) test with invasive(More)