Cannabis and vaping may affect sedation and pain management during surgery
A review found emerging evidence that cannabis users may require more propofol for sedation and more opioids for pain after surgery, with e-cigarette/THC vaping adding respiratory risks.
Quick Facts
What This Study Found
Cannabis use may reduce the efficacy of propofol and postoperative opioid pain management, potentially requiring higher doses. E-cigarette use, particularly with THC vaping products, has been linked to severe acute lung injury (EVALI). Cannabis affects cardiovascular, respiratory, and neurological function, placing users at increased perioperative risk.
Key Numbers
Cannabis users may be tolerant to propofol and opioid effects; EVALI has been linked to THC vaping products.
How They Did This
Narrative review of recent literature on cannabis and e-cigarette effects relevant to anesthesia practice, including clinical reports and pharmacological evidence.
Why This Research Matters
With cannabis use increasing, anesthesiologists need to understand how it interacts with surgical care. Under-dosing sedation or pain medication because of unrecognized cannabis tolerance could compromise patient safety.
The Bigger Picture
The intersection of increasing cannabis use and surgical medicine is understudied. Preoperative screening for cannabis use may need to become standard to adjust anesthesia plans accordingly.
What This Study Doesn't Tell Us
Narrative review; limited controlled data specifically on cannabis-anesthesia interactions; most evidence for tolerance effects comes from case reports and small series; rapidly evolving landscape of cannabis products.
Questions This Raises
- ?How much additional propofol or opioid do cannabis users typically need?
- ?Should cannabis abstinence be recommended before elective surgery?
Trust & Context
- Key Stat:
- Cannabis may reduce efficacy of propofol and postoperative opioid pain management
- Evidence Grade:
- Moderate: synthesizes emerging clinical evidence but limited controlled data on specific anesthesia interactions.
- Study Age:
- Published 2020.
- Original Title:
- Cannabis, e-cigarettes and anesthesia.
- Published In:
- Current opinion in anaesthesiology, 33(3), 318-326 (2020)
- Authors:
- Lynn, Rachael S Rzasa, Galinkin, Jeffrey L
- Database ID:
- RTHC-02698
Evidence Hierarchy
Summarizes existing research on a topic.
What do these levels mean? →Frequently Asked Questions
Should I tell my anesthesiologist about cannabis use?
Yes. This review suggests cannabis may reduce the effectiveness of sedation and pain medications, meaning your anesthesia plan may need adjustment.
Does vaping THC add surgical risks?
Yes. THC vaping has been linked to severe lung injury (EVALI), which could complicate respiratory management during and after surgery.
Read More on RethinkTHC
- CBD-oil-quality-guide
- anxiety-medication-after-quitting-weed
- cannabis-chemotherapy-nausea
- cannabis-chronic-pain-research
- cannabis-epilepsy-CBD-Epidiolex
- cbd-anxiety-research-evidence
- cbd-for-weed-withdrawal
- cbd-vs-thc-difference
- medical-benefits-of-cannabis
- quitting-weed-before-surgery
- quitting-weed-medication-interactions
- quitting-weed-pregnancy
- quitting-weed-pregnant
- seniors-older-adults-cannabis-risks-medications
- weed-breastfeeding-THC-breast-milk
Cite This Study
https://rethinkthc.com/research/RTHC-02698APA
Lynn, Rachael S Rzasa; Galinkin, Jeffrey L. (2020). Cannabis, e-cigarettes and anesthesia.. Current opinion in anaesthesiology, 33(3), 318-326. https://doi.org/10.1097/ACO.0000000000000872
MLA
Lynn, Rachael S Rzasa, et al. "Cannabis, e-cigarettes and anesthesia.." Current opinion in anaesthesiology, 2020. https://doi.org/10.1097/ACO.0000000000000872
RethinkTHC
RethinkTHC Research Database. "Cannabis, e-cigarettes and anesthesia." RTHC-02698. Retrieved from https://rethinkthc.com/research/lynn-2020-cannabis-ecigarettes-and-anesthesia
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.