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Title: The role of Acu-TENS in hemodynamic recovery after open-heart surgery
Authors: Ng, MCS
Jones, YMA
Cheng, LC
Issue Date: 2011
Source: Evidence-based complementary and alternative medicine, 2011, v. 2011, 301974, p. 1-8
Abstract: 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.
Keywords: Metoclopramide
Acupoint electrical-stimulation
Rate-variability
Myocardial-infarction
Baroreflex sensitivity
Postoperative nausea
Autonomic control
Healthy-subjects
Cardiac-surgery
Acupuncture
Electroacupuncture
Publisher: Hindawi Publishing Corporation
Journal: Evidence-based complementary and alternative medicine 
ISSN: 1741-427X
EISSN: 1741-4288
DOI: 10.1093/ecam/neq015
Rights: Copyright © 2011 Maggie C. S. Ng et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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