Ｄｕｒｉｎｇ ｔｈｅ ｐａｓｔ ５４ ｍｏｎｔｈｓ ａ ｔｏｔａｌ ｏｆ ２４ ｐａｔｉｅｎｔｓ ｗｉｔｈ ｓｅｃｏｎｄａｒｙ ｈｅｐａｔｉｃ ｃａｒｃｉｎｏｍａ ｈａｖｅ ｂｅｅｎ ｔｒｅａｔｅｄ ｂｙ ｒｅｓｅｃｔｉｏｎ ｏｆ ｈｅｐａｔｉｃ ｍｅｔａｓｔａｓｉｓ ａｎｄ ｐｏｓｔｏｐｅｒａｔｉｏｎ ｐｅｒｃｕｔａｎｅｏｕｓ ｉｎｔｒａｈｅｐａｔｏｐｏｒｔａｌ ｃｈｅｍｏｔｈｅｒａｐｙ（ＰＨＰＣ） ｕｎｄｅｒ ｕｌｔｒａｓｏｕｎｄ ｇｕｉｄａｎｃｅ Ａ ｆｏｌｌｏｗｕｐ ｆｒｏｍ ｆｉｖｅ ｍｏｎｔｈｓ ｔｏ ｆｏｕｒ ｙｅａｒｓ ｓｈｏｗｓ ｔｈａｔ ２１ ｐａｔｉｅｎｔｓ ｈａｖｅ ｓｕｒｖｉｖｄｅ ｆｏｒ ５ ｔｏ ４８ ｍｏｎｔｈｓ ｅｘｃｅｐｔ ３ ｅｘｔｒｅｍｅｌｙ ａｄｖａｎｃｅｄ ｃａｓｅｓ． Ｔｈｅ ａｕｔｈｏｒｓ ｓｕｇｇｅｓｔ ｔｈａｔ ａ ｃｏｍｂｉｎｅｄ ｔｈｅｒａｐｅｕｔｉｃ ｍｅｔｈｏｄ ｆｏｒ ｔｒｅａｔｉｎｇ ｓｅｃｏｎｄａｒｙ ｈｅｐａｔｉｃ ｃａｒｃｉｎｏｍａ ｉｓ ｍｏｒｅ ｅｆｆｅｃｔｉｖｅ ｔｈａｎ ｅｉｔｈｅｒ ｓｉｍｐｌｅ ｈｅｐａｔｅｃｔｏｍｙ ｏｒ ｃｈｅｍｏｔｈｅｒａｐｙ．
During the past 42 months, a total of 53 patients with primary hepatic carcinoma (PHC) had been treated by fine needle percutanous ethanol intratumor infiltration (group P) and ethanol infiltration combined with intrahepatoportal chemotherapy around carcinoma, using adriamycin (group PA) or using adriamycin, carboplytin mitomycin and 5-Fu (group PC) for two courses. Result showed that 16cases were complete remission and 21 cases were part remission. The overall response rate was 69.8%, with a median survival duration of 10.1 months. After clinical contrast among three groups, the response rate in PA group exceeded P and PC group and adverse reactions was lower than PC group. The authors belive that this method might be a remedial measure for patients who are unsuitable for major surgery.
Aiming at the defects that the traditional pulse transit time (PTT) detection methods are sensitive to changes in photoplethysmography (PPG) signal and require heavy computation, we proposed a new algorithm to detect PTT based on waveform time domain feature and dynamic difference threshold. We calculated the PTT by using dynamic difference threshold method to detect the R-waves of electrocardiogram (ECG), shortening the main peak detection range in PPG signal according to the characteristics of the waveform time domain, and using R wave to detect the main peak of PPG signal. We used the American MIMIC database and laboratory test data to validate the algorithm. The experimental results showed that the proposed method could accurately extract the feature points and detect PTT, and the PTT detection accuracies of the measurements and the database samples were 99.1% and 97.5%, respectively. So the proposed method could be better than the traditional methods.