Inflammation and Postoperative Tramadol Analgesia

General Surgery Clinical Trial

Official title:

The Influence of Systemic Inflammation on the Analgesic Effect of Tramadol After Major Abdominal Surgery

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04330157
• Other study ID #: OsijekUH-6
• Status: Completed
• Start date: January 1, 2019
• Est. completion date: February 1, 2020

Study information

• Verified date: July 2021
• Source: Osijek University Hospital
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Patients will be admitted in the intensive care unit after major abdominal surgery. All patients will receive 100 mg of tramadol intravenously every 6 hours. Pain will be assessed before and half an hour after tramadol administration by verbal Numeric Rating Scale.

Description:

To all patients included in the study from the blood sample taken prior to the operation the leukocytes counts, c-reactive protein (CRP), procalcitonin (PCT) and lactate level will be performed, as well as arterial blood gas analysis. After admission to the intensive care unit, all patients will receive 100 mg of tramadol intravenously every 6 hours. Pain will be assessed before and half an hour after tramadol administration by verbal Numeric Rating Scale (NRS). Pain score will be compared between patients with and without systemic inflammation. Systemic inflammation is defined as fulfilling at least two of the following major criteria: fever > 38 oC or hypothermia < 36 oC, tachycardia > 90 beats/minute, pCO2 in arterial blood < 4.3 kPa and leukocytes > 12.000/mm3 or < 4.000/mm3. Also, preoperative values of CRP > 50 mg/L and PCT > 0.5 ng/ml was also considered systemic inflammation.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 50
• Est. completion date: February 1, 2020
• Est. primary completion date: January 1, 2020
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 90 Years

Eligibility

Inclusion Criteria:

• elective and emergency open abdominal surgery
• ICU admission

Exclusion Criteria:

• tramadol allergy
• surgery performed laparoscopically
• age younger of 18 years and older the 90 years

Related Conditions & MeSH terms

• General Surgery
• Inflammation

Locations

Country	Name	City	State
Croatia	University hospital centre Osijek	Osijek

Sponsors (1)

Lead Sponsor	Collaborator
Osijek University Hospital

Country where clinical trial is conducted

Croatia, 

References & Publications (4)

Barakat A. Revisiting Tramadol: A Multi-Modal Agent for Pain Management. CNS Drugs. 2019 May;33(5):481-501. doi: 10.1007/s40263-019-00623-5. Review. — View Citation

Gerbershagen HJ, Rothaug J, Kalkman CJ, Meissner W. Determination of moderate-to-severe postoperative pain on the numeric rating scale: a cut-off point analysis applying four different methods. Br J Anaesth. 2011 Oct;107(4):619-26. doi: 10.1093/bja/aer195. Epub 2011 Jun 30. — View Citation

He ZX, Chen XW, Zhou ZW, Zhou SF. Impact of physiological, pathological and environmental factors on the expression and activity of human cytochrome P450 2D6 and implications in precision medicine. Drug Metab Rev. 2015;47(4):470-519. doi: 10.3109/03602532.2015.1101131. Epub 2015 Nov 16. Review. — View Citation

Mallick P, Taneja G, Moorthy B, Ghose R. Regulation of drug-metabolizing enzymes in infectious and inflammatory disease: implications for biologics-small molecule drug interactions. Expert Opin Drug Metab Toxicol. 2017 Jun;13(6):605-616. doi: 10.1080/17425255.2017.1292251. Epub 2017 Feb 22. Review. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Analgesic Affect of Tramadol After Major Abdominal Surgery	Pain will be assessed before and half an hour after tramadol administration in awake patients by verbal Numeric Rating Scale. This scale has values from 0 to 10, where 0 means no pain and 10 means maximum pain.	NRS was assessed before and 30 minutes after each tramadol dose during first 24 postoperative hours
Primary	Examine Differences in the Analgesic Effect of Tramadol Between Patients With and Without Postoperative Systemic Inflammation	Differences in Numeric Rating Scale (NRS) in Patients with and without Systemic Inflammation. This scale has values from 0 to 10, where 0 means no pain and 10 means maximum pain.	NRS was assessed before and 30 minutes after each dose of tramadol in a first 24 postoperative hour