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Esophageal cancer is a malignant tumor of the digestive system that has a high incidence in China. The traditional treatment methods include surgery, radiotherapy, and chemotherapy, but the long-term efficacy is not good and the side effects are obvious. As a traditional physical therapy, hyperthermia has no significant toxic and side effects. Studies have shown that hyperthermia can increase the sensitivity of esophageal cancer to radiotherapy and chemotherapy, and its combined use in the treatment of esophageal cancer can prolong the survival and improve the quality of life. In addition, the innovation of materials and technologies brings new breakthroughs to tumor hyperthermia.
RESUMO
Purpose To assess left ventricular diastolic function in the patients with essentialhypertension. Methods 25 normotensives,93 hypertensiives without hypertrophy (NLVH) and 47 withhypertrophy (LVH)(LVMI, left ventricular mass index ＞ 124 g/m2 in males and 110 g/m2 in females)underwent 2DE and Doppler echocardiography. Results The ratio of early to late peak velocity (E/A)was 1.21 ± 0.24 in normotensives and 1.03 ± 0.23 in NLVH patients( P ＜ 0.01 ); reversed pulmonaryvenous flow at atrial systole PA wave was (32.7 ± 7.5 ) vs (38.9 ± 8.7) cm/s (P ＜ 0.01 ) in normotensivesand in NLVH patients respectively. The isovolumic relaxation time (IVRT) and left atrial dimension (LAD)have significant differences in three groups ( P ＜ 0. 05 - 0. 001 ). EF value was similar betweennormotensives and NLVH patients, but it was lower in LVH patients ( P ＜ 0.01 ). Conclusions E/Aratio, PA wawe, Pai, IVRT and LAD are sensitive parameters indicating mild diastolic left ventriculardysfunction. Systolic left ventricular function has no change in NLVH patients.