Heart Rate Variability During Acute Diverticulitis

Inclusion Criteria: * CT-verified diverticulitis patients managed by antibiotic treatment at Herlev Hospital * Pain and fever occurred less than 72 hours prior to the admission * ASA (American Society of Anesthesiologists) score I to III Exclusion Criteria: * Surgical intervention needed * Complicated diverticulitis * Complications in relation to diverticulitis * Pain and fever occurred more than 72 hours prior to the admission * In anticoagulant treatment and heart rate control treatment * Known Autoimmune disease * Known medically treated sleep-disorder (insomnia, restless legs etc.) and sleep apnea * Shift-work or jetlag * Daily use of opioid, psychopharmaca, opioids or anxiolytics (including Hypnotics) * Known psychiatry conditions in treatment with psychopharmaca * Daily alcohol intake of more than 5 units or drug abuse * Missing written consent * Diabetes Mellitus * Predicted bad compliance * Pregnant or breast-feeding * Urine or fecal incontinence * Severe kidney disease * Current cancer