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One of the most common laboratory tests in intensive care units is the arterial blood gases, sampling of arterial blood gases (as a critical care nursing responsibility) might be corrupted by pre-analytical factors that influence the validity of results. Arterial blood gases are valuable only if obtained properly and measured carefully. Corrupted factors in arterial blood gas sampling change significantly the results and adversely affect patient-care decisions when the magnitude of the error is clinically important. Validity of a laboratory finding has been defined as the 'degree of achieving...

Sleep as one of the basic human needs is absolutely essential for patients to survive from critical illness. Despite the best medical interventions, critically ill patients require sleep to recuperate. Therefore, sleep quality and factors that might negatively influence sleep were assessed. The current study revealed that critically ill patients perceived sleep quality as altered and described this alteration as a moderate degree of sleep disturbance. The etiologies of sleep disturbances in the current study were found to be multifactorial: presence of strange and bad odors, noise, having...