Ultrasonographic measurement of the optic nerve sheath diameter to detect intracranial hypertension: an observational study.

Objectives: To evaluate the ultrasonographic measurement of optic nerve sheath diameter (ONSD) as a predictor of intracranial hypertension as compared to the invasive measurement of intracranial pressure (ICP).

Design: Cross-sectional observational study.

Setting: Intensive Care Unit (ICU) of two tertiary university hospitals in Montevideo, Uruguay.

Comparison of ultrasonographic versus infrared pupillary assessment.

Objectives: To evaluate the correlation between ultrasonographic and infrared pupillary assessments in critically ill patients, including neurocritically ill patients.

Design: Prospective, observational study.

Setting: Tertiary teaching hospital intensive care unit (ICU) in Montevideo, Uruguay.