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Acute improvement in hemodynamic control after osteopathic manipulative treatment in the third trimester of pregnancy

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Randomized Controlled Trial, Clinical trial

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Osteopathic Manipulative Treatment

Complement Ther Med. 2013 Dec;21(6):618-26.

Authors:

Kendi L Hensel, Christina F Pacchia, Michael L Smith

Abstract.



Objectives: The physiological changes that occur during pregnancy, including increased blood volume and cardiac output, can affect hemodynamic control, most profoundly with positional changes that affect venous return to the heart. By using Osteopathic Manipulative Treatment (OMT), a body-based modality theorized to affect somatic structures related to nervous and circulatory systems, we hypothesized that OMT acutely improves both autonomic and hemodynamic control during head-up tilt and heel raise in women at 30 weeks gestation.

Design: One hundred subjects were recruited at 30 weeks gestation.

Setting: The obstetric clinics of UNTHealth in Fort Worth, TX.

Intervention: Subjects were randomized into one of three treatment groups: OMT, placebo ultrasound, or time control. Ninety subjects had complete data (N=25, 31 and 34 in each group respectively).

Main outcome measures: Blood pressure and heart rate were recorded during 5 min of head-up tilt followed by 4 min of intermittent heel raising.

Results: No significant differences in blood pressure, heart rate or heart rate variability were observed between groups with tilt before or after treatment (p>0.36), and heart rate variability was not different between treatment groups (p>0.55). However, blood pressure increased significantly (p=0.02) and heart rate decreased (p<0.01) during heel raise after OMT compared to placebo or time control.

Conclusions: These data suggest that OMT can acutely improve hemodynamic control during engagement of the skeletal muscle pump and this was most likely due to improvement of structural restrictions to venous return.

Publication Date: 

2013 Dec

OEID: 

2352

Hensel, LK., Pacchia, FC., Smith, LM. (2013) 'Acute improvement in hemodynamic control after osteopathic manipulative treatment in the third trimester of pregnancy ', Complement Ther Med. 2013 Dec;21(6):618-26.

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