Change of Sputum Viscoelasticity in Patients Undergoing General Anesthesia and Thoracotomy
Ma Yan-lan, Han Zhong-fu. Wang Jian-rong,et al(Department of Nursing,General Hospital of PL A, Beijing 100853, China)
Objective The study is to further understand the sputum viscoelasticity changes in pa-tients after general anesthesia and thoracotomy. Methods 68 patients after thoracotomy were in-volved to measure the sputum rheology. Results Sputum yield stress was significantly decreased from day 1(11. 3 Pa) to day 5(4. 7 Pa). Viscosity on the first postoperative day(0. 92 Pa. s) was significantly higher than that on the fourth and fifth day(0. 27 Pa. s,0. 29 Pa. s). Elasticity was also significantly higher on day 1(1. 12 Pa. s)than that on day 2～5(0. 29 Pa. s～0. 04 Pa. s). Conclusion Patients after thoracotomy could not expectorate smoothly owing to high yield stress and vis-coelastisity of sputum on the first postoperative day. More effective mucokinetic measures should be developed.
【CateGory Index】： R655