Effects of Caffeine Intake on Cognitive Performance Related to Total Sleep Deprivation and Time on Task: A Randomized Cross-Over Double-Blind Study.

Introduction: It is widely admitted that both total sleep deprivation (TSD) and extended task engagement (Time-On-Task, TOT) induce a cognitive fatigue state in healthy subjects. Even if EEG theta activity and adenosine both increase with cognitive fatigue, it remains unclear if these modifications are common mechanisms for both sustained attention and executive processes.

Methods: We performed a double-blind counter-balanced (placebo (PCBO) and caffeine (CAF) - 2×2.

[Laryngeal tuberculosis: study of 11 cases].

We report 11 patients with laryngeal tuberculosis seen in our hospital, January 1990 to July 2000. Eight were men and all cases presented with dysphonia and/or disphagia. In 8 pulmonary tuberculosis was associated.

Tapping the television cable.

Immediate access to patient data is essential to support good clinical decision making and support. However, away from the surgery, the doctor is currently unable to have any access to the clinical database. Solutions exist to support remote access, such as modems or radio data networks, but these are slow, with typical speeds in the 2-10 kbaud region.

[Foreign body in the maxillary sinus. Apropos of a case].

It is described the case of an inflammatory maxillary sinus process, with both torpid evolution and post-traumatic etiology. The surgery proved the existence of a foreign body lodged in the maxillary sinus.

[A case of rhinophyma].

A case of rhinophyma, surgically treated, is reported, for being a process with low incidence and for its big size.