Abstract:Objective To investigate the effect of Dexmedetomidine on myocardial injury after lower extremity ischemia reperfusion in elderly hypertension patients. Methods A total of 60 elderly hypertension patients who underwent knee replacement in the First Hospital of Hebei Medical University from January 2019 to December 2020 were selected, they were divided into Dexmedetomidine group (group D, 30 cases) and control group (group C, 30 cases) by random number table method. Group D was given Dexmedetomidine 1 μg/kg after anesthesia induction, and maintained at 0.4 μg/(kg·h) until 30 min before the end of surgery; group C was given normal saline in the same way. Venous blood was collected at before tourniquet (T0), 20 min (T1), 2 h (T2), and 12 h (T3) after tourniquet loosening in two groups. The levels of serum inflammatory factors (tumor necrosis factor-α [TNF-α], interleukin-6 [IL-6]), oxidative stress index (malondialdehyde [MDA], superoxide dismutase [SOD]), and myocardial injury markers (creatine kinase isoenzyme [CK-MB], troponin I [cTnI]) were determined. Results The levels of TNF-α, IL-6, and MDA in two groups at T1-T3 were higher than those at T0, and the levels of TNF-α, IL-6, and MDA in group D at T1-T3 were lower than those in group C, and the differences were statistically significant (P < 0.05). The levels of SOD at T1-T3 in two groups were lower than those at T0, and the levels of SOD at T1-T3 in group D were higher than those in group C, and the differences were statistically significant (P < 0.05). The levels of CK-MB and cTnI at T2, T3 in two groups were higher than those at T0, and the levels of CK-MB and cTnI in group D at T2, T3 were lower than those in group C, and the differences were statistically significant (P < 0.05). Conclusion Dexmedetomidine can significantly reduce tourniquet related inflammation and oxidative stress in elderly hypertension patients and reduce myocardial injury after lower extremity ischemia reperfusion.
刘秀叶 王莉 周长浩 穆秀娥 郭琼梅. 右美托咪定对老年高血压患者下肢缺血再灌注后心肌损伤的影响[J]. 中国医药导报, 2022, 19(4): 107-110,123.
LIU Xiuye WANG Li ZHOU Changhao MU Xiu’e GUO Qiongmei. Effect of Dexmedetomidine on myocardial injury after lower extremity ischemia reperfusion in elderly hypertensive patients#br#. 中国医药导报, 2022, 19(4): 107-110,123.