Oxidative stress in obstructive sleep apnea.

Study Objectives: To investigate the relationship between the severity of obstructive sleep apnea (OSA) and oxidative stress, which plays an important role in the pathogenesis of cardiovascular disease, and to elucidate the factors contributing to this relationship.

Design: Cross-sectional study.

Participants: A total of 128 consecutive subjects referred to the sleep laboratory of our hospital for screening or treatment of OSA.

Obstructive sleep apnea and carotid-artery intima-media thickness.

Study Objectives: We investigated whether the carotid-artery intimamedia thickness (IMT) measured by ultrasonography, which is regarded as an indicator of atherosclerosis, was associated with the severity of obstructive sleep apnea (OSA).

Design: Cross-sectional study.

Setting: A sleep laboratory in a general hospital in Japan.

[A case of pulmonary arteriovenous malformation treated by transcatheter embolization using coils].

The patient was a 21-year-old woman who, at 16 years old, had had no subjective symptoms. She was referred to our hospital because of abnormal shadows in the middle of the left lung that were seen on a chest radiograph during a school medical screening. In her first examination at our hospital, CT revealed tumor-like shadows with diameters of 2.

[A case of pleural malignant lymphoma associated with chronic tuberculous pyothorax].

We report a case of pleural malignant lymphoma associated with chronic tuberculous pyothorax. A 67-year-old male was hospitalized because of left lateral chest swelling and pain. He had suffered from pulmonary tuberculosis at the age of six and tuberculous pleurisy at the age of 24.

Cervical nerve root avulsion in brachial plexus injuries: magnetic resonance imaging classification and comparison with myelography and computerized tomography myelography.

Object: The authors describe a new magnetic resonance (MR) imaging technique to demonstrate the status of the cervical nerve roots involved in brachial plexus injury. They discuss the accuracy and reproducibility of a MR imaging-derived classification for diagnosis of nerve root avulsion compared with those of myelography combined with computerized tomography (CT) myelography.

Methods: The overlapping coronal-oblique slice MR imaging procedure was performed in 35 patients with traumatic brachial plexus injury and 10 healthy individuals.