An apparatus for detecting atrial fibrillation which is in the arm is decompression, mean blood pressure or fixed pressure state, to detect a pulse signal to obtain a time pulse waveform and converting it to an energy spectrum waveform via Fast Fourier Transform. The energy spectrum waveform includes a first frequency region, a second frequency region, and a third frequency region. The number of spikes in each frequency region was calculated and the heart indexes of the first, second, and third frequency regions were obtained, which were the first heart index, the second heart index, and the third heart index. And by the sum of the three heart index values and the first heart index to determine the possibility of atrial fibrillation, whereby the user can determine the possibility and predicting atrial fibrillation by simple measurement of blood pressure at home.一種可判斷心房顫動的裝置,其係在手臂處於洩氣減壓、血壓均值或固定壓力的狀態下,偵測脈波訊號以獲得時間脈波圖,並將其經由快速傅立葉轉換成一能量頻譜圖,其中包含第一頻率區域、一第二頻率區域及第三頻率區域,經由計算每個頻率區域內雜訊的棘波個數,取得第一、第二及第三頻率區域的心臟指數,分別為第一心臟指數、第二心臟指數及第三心臟指數,並藉由三心臟指數的總和及第一心臟指數的數值來判斷是否可能為心房顫動。藉此血壓裝置,使用者可於居家透過簡易量測血壓方式判斷與預診斷心房顫動的發生可能性。10‧‧‧可判斷心房顫動的血壓裝置12‧‧‧壓脈帶121‧‧‧氣管14‧‧‧裝置本體16‧‧‧殼體18‧‧‧電源開關鈕20‧‧‧開始測量鈕22‧‧‧功能鍵221‧‧‧設定鈕222‧‧‧右選擇鈕223‧‧‧左選擇鈕24‧‧‧第一模組26‧‧‧第二模組28‧‧‧第三模組30‧‧‧顯示模組36‧‧‧第四模組38‧‧‧警示符號
