Department of Physiotherapy, Grantham Hospital, China.
Evid Based Complement Alternat Med. 2011;2011:301974. doi: 10.1093/ecam/neq015. Epub 2011 Mar 20.
Increased heart rate (HR) and reduced blood pressure (BP) are common consequences of cardiac surgery. This study investigated the effect of transcutaneous electrical nervous stimulation applied over acupuncture points (Acu-TENS) on HR, BP, rate pressure product (RPP) and nausea and vomiting score after open-heart surgery. After open heart surgery, 40 patients were randomly allocated to either an Acu-TENS group, which received a 40-min session of TENS applied bilaterally over the acupuncture point PC6 on postoperative days 1-5, or a Placebo-TENS group, which received identical electrode placement but with no electrical output from the TENS unit, despite an output indicator light appearing activated. HR, systolic and diastolic BPs (SBP and DBP) were recorded and RPP computed. Nausea and vomiting symptoms were quantified using a 4-point Likert scale before and after TENS intervention. Daily HR, BP and antiemetic administration data were recorded from a further 20 consecutive subjects who received no intervention and formed the Control group. A trend of decreasing HR and increasing BP in the Acu-TENS group was observed over the five postoperative days, with all variables returning to preoperative values by Day 4 (P > .2). In the Placebo-TENS and Control groups the HR remained higher (P < .0001), BP lower (P < .05) and RPP higher (P = .01) than respective preoperative values at Day 4. The dose of Maxolon required was lowest in the Acu-TENS group (P = .038). We concluded that Acu-TENS facilitated an earlier return to preoperative BP, HR and RPP values in patients after acute heart surgery.
心率（HR）增加和血压（BP）降低是心脏手术后的常见后果。本研究调查了经皮电神经刺激（TENS）应用于穴位（PC6）对开胸手术后 HR、BP、心率血压乘积（RPP）和恶心呕吐评分的影响。开胸手术后，40 名患者随机分为 TENS 组（术后第 1-5 天接受双侧 PC6 穴位 40 分钟 TENS 治疗）和假 TENS 组（接受相同的电极放置，但 TENS 仪无电流输出，尽管输出指示灯显示激活）。记录 HR、收缩压和舒张压（SBP 和 DBP），并计算 RPP。在 TENS 干预前后使用 4 分制 Likert 量表量化恶心呕吐症状。另外 20 名连续接受无干预的患者作为对照组，记录每日 HR、BP 和止吐药使用数据。Acu-TENS 组在术后 5 天内 HR 呈下降趋势，BP 呈上升趋势，所有变量在第 4 天恢复术前值（P >.2）。在假 TENS 组和对照组中，HR 仍然较高（P <.0001），BP 较低（P <.05），RPP 较高（P =.01），第 4 天与术前值相比。Acu-TENS 组所需的 Maxolon 剂量最低（P =.038）。我们得出结论，Acu-TENS 促进了急性心脏手术后患者更早地恢复到术前的 BP、HR 和 RPP 值。
