Research output: Contribution to journal › Article › Academic › peer-review
Postoperative pain reduction by pre-emptive N-acetylcysteine : an exploratory randomized controlled clinical trial. / Mulkens, Chantal Elise; Staatsen, Marieke; van Genugten, Lucie et al.
In: Regional anesthesia and pain medicine, Vol. 46, No. 11, 01.11.2021, p. 960-964.Research output: Contribution to journal › Article › Academic › peer-review
}
TY - JOUR
T1 - Postoperative pain reduction by pre-emptive N-acetylcysteine
T2 - an exploratory randomized controlled clinical trial
AU - Mulkens, Chantal Elise
AU - Staatsen, Marieke
AU - van Genugten, Lucie
AU - Snoeker, Barbara A. M.
AU - Vissers, Kris C. P.
AU - Bruhn, J. rgen
AU - Bucx, Martin J. L.
N1 - Publisher Copyright: © American Society of Regional Anesthesia & Pain Medicine 2021. No commercial re-use. See rights and permissions. Published by BMJ.
PY - 2021/11/1
Y1 - 2021/11/1
N2 - BACKGROUND: A new potential target for multimodal pain management is the group-II metabotropic glutamate receptor subtypes, which can be activated by N-acetylcysteine. We investigated whether pre-emptive administration of N-acetylcysteine leads to a reduction in postoperative pain after laparoscopic inguinal hernia repair. METHODS: Sixty American Society of Anesthesiologists I-II patients scheduled for elective inguinal hernia repair were randomized to receive either N-acetylcysteine (150 mg/kg) or placebo intravenously 1 hour before surgery. The primary outcome was the visual analogue score during movement in the morning (approximately 24 hours) after surgery. Among secondary outcomes were postoperative opioid consumption and safety of intravenous N-acetylcysteine. RESULTS: In total, 23 patients were analyzed per group. Pain scores were similar at all timepoints with a 24 hours median score of 34 (IQR of 19.0 to 42.5) in the N-acetylcysteine group and a median score of 26 (16.0 to 50.0) in the placebo group. The percentage of patients using opioids after surgery was 22% versus 39% day 1 (p=0.63); 9% versus 26% day 2 (p=0.14); 9% versus 17% day 3 (p=0.35) in the N-acetylcysteine group compared with placebo group. Side effects resembling anaphylactoid reactions in response to the administration of N-acetylcysteine were present in more than half of the patients. CONCLUSIONS: Without finding important differences between N-acetylcysteine and placebo group in pain scores postoperatively, but with a high percentage of bothersome side effects for the N-acetylcysteine group, we would not recommend the use of pre-emptive intravenous N-acetylcysteine to reduce postoperative pain in laparoscopic inguinal hernia repair patients based on this study. TRIAL REGISTRATION NUMBER: NCT03354572.
AB - BACKGROUND: A new potential target for multimodal pain management is the group-II metabotropic glutamate receptor subtypes, which can be activated by N-acetylcysteine. We investigated whether pre-emptive administration of N-acetylcysteine leads to a reduction in postoperative pain after laparoscopic inguinal hernia repair. METHODS: Sixty American Society of Anesthesiologists I-II patients scheduled for elective inguinal hernia repair were randomized to receive either N-acetylcysteine (150 mg/kg) or placebo intravenously 1 hour before surgery. The primary outcome was the visual analogue score during movement in the morning (approximately 24 hours) after surgery. Among secondary outcomes were postoperative opioid consumption and safety of intravenous N-acetylcysteine. RESULTS: In total, 23 patients were analyzed per group. Pain scores were similar at all timepoints with a 24 hours median score of 34 (IQR of 19.0 to 42.5) in the N-acetylcysteine group and a median score of 26 (16.0 to 50.0) in the placebo group. The percentage of patients using opioids after surgery was 22% versus 39% day 1 (p=0.63); 9% versus 26% day 2 (p=0.14); 9% versus 17% day 3 (p=0.35) in the N-acetylcysteine group compared with placebo group. Side effects resembling anaphylactoid reactions in response to the administration of N-acetylcysteine were present in more than half of the patients. CONCLUSIONS: Without finding important differences between N-acetylcysteine and placebo group in pain scores postoperatively, but with a high percentage of bothersome side effects for the N-acetylcysteine group, we would not recommend the use of pre-emptive intravenous N-acetylcysteine to reduce postoperative pain in laparoscopic inguinal hernia repair patients based on this study. TRIAL REGISTRATION NUMBER: NCT03354572.
KW - ambulatory care
KW - analgesia
KW - pain
KW - postoperative
UR - http://www.scopus.com/inward/record.url?scp=85120508275&partnerID=8YFLogxK
U2 - 10.1136/rapm-2021-102884
DO - 10.1136/rapm-2021-102884
M3 - Article
C2 - 34446544
VL - 46
SP - 960
EP - 964
JO - Regional anesthesia and pain medicine
JF - Regional anesthesia and pain medicine
SN - 1098-7339
IS - 11
ER -
ID: 20729596