To provide an atrial fibrillation detection system capable of suppressing detection of false positive by simply and reliably excluding an irregular beat interval not derived from heart beats.SOLUTION: An atrial fibrillation detection system 1 for detecting the presence or absence of an atrial fibrillation of a subject comprises: beat interval measuring means 2 for measuring beating intervals of the heart of the subject； irregular beat interval excluding means 3 for excluding irregular beat intervals not derived from the beat of the heart of the subject from beat interval data measured by the beat interval measuring means 2； determination means 4 for determining whether or not atrial fibrillation has occurred by using post-exclusion data obtained by excluding irregular beat intervals from the beat interval data by the irregular beat interval excluding means 3； and display means 5 for displaying a determination result obtained by the determination means 4.SELECTED DRAWING: Figure 4【課題】心臓の拍動に由来しない不正な拍動間隔を簡易に且つ確実に除外して偽陽性の検出を抑制できる心房細動検出システムの提供。【解決手段】被検者の心房細動の有無を検出する心房細動検出システム１であって、前記被検者の心臓の拍動間隔を測定する拍動間隔測定手段２と、この拍動間隔測定手段２で測定された拍動間隔データから前記被検者の心臓の拍動に由来しない不正な拍動間隔を除外する不正拍動間隔除外手段３と、前記拍動間隔データから前記不正拍動間隔除外手段３により不正な拍動間隔を除外した除外後データを用いて心房細動が発生したか否かを判定する判定手段４と、この判定手段４で得られた判定結果を表示する表示手段５とを有する。【選択図】図４
