Heart rate variability reflects the autonomic nervous system on the intrinsic activity of sinus node cells. Sympathetic hyperactivity is an adaptation to stress, while parasympathetic hyperactivity is present at rest. Thus, any variability in the heart frequency rate reflects variations in sympathetic and parasympathetic components in the autonomic nervous system. Failure to return to normal or a reduction in the variability of the heart rate in the postoperative period is correlated with complications in colorectal surgery.
Patients operated for a scheduled colorectal resection due to cancer, diverticulitis, or Chronic Inflammatory Bowel Disease,
American Society of Anesthesiologists score 1-2
The patient must have given their free and informed consent and signed the consent form
The patient must be a member or beneficiary of a health insurance plan
Patient taking antidepressants, antipsychotics, antihypertensive beta blocker type, anti-arythmic or oral contraception
Uncontrolled diabetes or associated with a neuropathy
Arrhythmias and conduction disturbances, , coronaropathy and heart failure, kidney failure
Neuropathies