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document
Effect of TENS on pain , medications , and pulmonary function following coronary artery bypass graft surgery . The efficacy of transcutaneous electrical nerve stimulation ( TENS ) as an adjunct to narcotic medications for the management of postoperative pain was assessed in a prospective , randomized , controlled study of patients following coronary artery bypass graft ( CABG ) surgery with the right or left internal thoracic artery ( ITA ) . Forty-five male patients ( mean age , 57 +/- 6 years ) were randomly assigned to ( 1 ) TENS , ( 2 ) placebo TENS , or ( 3 ) control treatments ( n = 15 each ) , following extubation and during the 24- to 72-h postoperative period . Two-way analysis of variance tests indicated no significant differences among treatment groups for ( 1 ) pain with cough , ( 2 ) narcotic medication intake , ( 3 ) FVC , ( 4 ) FEV1 , and ( 5 ) PEFR ( p > 0.05 ) . However , pain at rest reported by the TENS group was significantly lower than that reported by the control group ( treatment main effect ; p < 0.04 ) , although no significant differences were observed between the TENS and placebo or between the placebo and control groups ( p > 0.05 ) . All six criterion measures were characterized by significant changes over time for the entire group ( n = 45 ; time main effect ; p < 0.01 ) , as follows : pain and medication intake were similar on days 1 and 2 , but were significantly less on day 3 , and pulmonary functions were significantly lower than preoperatively on day 1 , decreased further on day 2 , and despite an improvement on day 3 , remained significantly lower than preoperative values ( p < 0.01 ) . This study suggests that the addition of TENS , applied continuously during the immediate postoperative period following CABG with ITA , may not be advantageous in pain management or the prevention of pulmonary dysfunction .
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Intervention_Physical
transcutaneous electrical nerve stimulation ( TENS )
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Intervention_Physical
TENS
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Intervention_Control
placebo TENS
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Intervention_Control
control treatments
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Intervention_Physical
TENS
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Outcome_Pain
pain
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Outcome_Other
medications
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Outcome_Physical
pulmonary function
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Outcome_Pain
postoperative pain
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Outcome_Pain
pain with cough
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Outcome_Mental
narcotic medication intake
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Outcome_Physical
FVC
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Outcome_Physical
FEV1
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Outcome_Physical
PEFR
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Outcome_Pain
pain at rest
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Outcome_Pain
pain
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Outcome_Pain
medication intake
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Outcome_Physical
pulmonary functions
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Outcome_Physical
pulmonary dysfunction
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Participant_Condition
pulmonary function following coronary artery bypass graft surgery .