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BACKGROUND Chromogenic anti-factor Xa activity (AXA) assay is reported to be the most appropriate method to measure the pharmacodynamics of apixaban, but the distribution of AXA in non-valvular atrial fibrillation (NVAF) patients on apixaban therapy has not been fully elucidated. METHODSANDRESULTS Steady-state trough and peak AXA were measured in 124 NVAF(More)
BACKGROUND The distribution of anti-factor Xa activity (AXA) values in non-valvular atrial fibrillation (NVAF) patients on edoxaban therapy has not been fully elucidated. METHODSANDRESULTS The steady-state trough and peak AXA values were measured in 66 NVAF patients. The trough AXA value did not differ significantly between the 60-mg and the 30-mg OD(More)
BACKGROUND We studied new prognostic factors of esophageal variceal rupture by analyzing electronic video images of esophageal varices in 30 patients with portal hypertension. METHODS Fifteen of the patients were emergency or elective cases (bleeders), and the remaining 15 were prophylactic cases (nonbleeders). A comparison was made between the bleeders(More)
In recent years, recording of color still images into magneto-optical video disks has been increasingly used as a method for recording electronic endoscopic images. In this case, image compression is often used to reduce the volume and cost of recording media and also to minimize the time required for image recording and playback. With this in mind, we(More)
We have devised a funnel-shaped transparent cap for the endoscopic diagnosis and treatment of stenosis in the digestive tract. This funnel-shaped cap is made of highly transparent methacrylic resin. A 73-year-old woman with reflux esophagitis (categorized as grade D by the Los Angeles Classification) visited our hospital with the chief complaint of(More)
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