Two Cases of Increased Parasympathetic Nerve System in Irritable Bowel Syndrome with Diarrhea as a Predominant Symptom

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Kosin Med J. 2013;28(1):49-54

Publication date (electronic) : 2013 January 19

doi : https://doi.org/10.7180/kmj.2013.28.1.49

Department of Family Medicine, College of Medicine, Kosin University, Busan, Korea

Corresponding author: Jong Soon Choi, Department of Family Medicine, College of Medicine, Kosin University, #34, Amnamdong, Suhgu, Busan 602-030, Korea Tel: +82-51-990-6476, E-mail: fmcjs@naver.com

Received 2012 July 25; 2012 August 17; Accepted 2012 September 28.

Abstract

The irritable bowel syndrome(IBS) is a chronic functional gastrointestinal disorder, characterized by abdominal pain, bloating and bowel disturbance. The pathophysiology of IBS is very complicated. Recent studies indicate that the most important mechanisms include visceral hypersensitivity, abnormal gut motility, autonomic nervous system(ANS) dysfunction and disorder of regulation of the brain-gut axis. Patients with IBS frequently present impaired autonomic regulation. Heart rate variability(HRV) is an acknowledged tool for estimating autonomic function. We experienced two cases of increased parasympathetic nervous system by HRV in irritable bowel syndrome with diarrhea as a predominant symptom

Keywords: Autonomic nervous system; Heart rate variability; Irritable bowel syndrome

Fig. 1.

Five-minute time & frequency domain indices of heart rate variability (case 1)

Fig. 2.

Five-minute time & frequency domain indices of heart rate variability (case 2)

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Fig. 1.

Five-minute time & frequency domain indices of heart rate variability (case 1)

Fig. 2.

Five-minute time & frequency domain indices of heart rate variability (case 2)