Cannabis use linked to higher complication rates after breast implant reconstruction | Research

The takeaway

Active cannabis users had significantly higher rates of infection, explantation, ER visits, and reoperation after direct-to-implant breast reconstruction, though the cannabis group was small.

Surgical patients who use cannabis, surgeons, people considering breast reconstruction

4.75x higher odds of reoperation within 90 days

What the researchers found

Among 243 patients undergoing immediate direct-to-implant breast reconstruction, 12 active cannabis users showed significantly higher rates of cellulitis requiring IV antibiotics, explantation for infection, ER visits, readmission, and reoperation within 90 days compared to non-users.

Why it matters

As cannabis use becomes more common, surgeons and patients need data on how it may affect surgical outcomes. This study suggests perioperative cannabis use could meaningfully increase complication risk in breast reconstruction.

The numbers in context

243 total patients, 12 active cannabis users. Significant increases in cellulitis with IV antibiotics (p=0.004), explantation for infection (p=0.004), ER visits (p=0.028), readmission (p=0.037). Adjusted OR for takeback to OR within 90 days: 4.75 (p=0.001). Major complications OR: 2.26 (p=0.048).

How the study worked

Retrospective cohort study at a quaternary-care breast cancer center examining consecutive patients undergoing immediate direct-to-implant reconstruction. Active cannabis use was defined as use within 12 weeks of surgery. Univariate and multivariable analyses were performed.

What this study cannot tell us

Very small cannabis group (12 patients) limits statistical power and generalizability. Retrospective design cannot control for all confounders. Self-reported cannabis use likely underestimates true prevalence. Single-center study.

How to read the evidence

Retrospective single-center study with only 12 cannabis users, limiting the reliability of findings despite significant p-values.

When this study was published

2024 study from a quaternary-care breast cancer center

The bigger picture

Cannabis is known to affect vascular inflammation and endothelial function. These surgical outcomes align with concerns about impaired wound healing, adding breast reconstruction to the growing list of procedures where cannabis use may matter.

Questions still open

What is the minimum abstinence period before surgery that would reduce complication risk? Do different cannabis consumption methods (smoking vs. edibles) carry different surgical risks?

Common questions

How was active cannabis use defined?

Use within 12 weeks of the operation, based on patient self-report.

Why might cannabis affect surgical outcomes?

Cannabis has been associated with vascular inflammation and endothelial damage, which could impair wound healing. Smoking cannabis may also affect oxygen delivery to tissues.

Read the original research

Marijuana's Impact On Implant-based Breast Reconstruction: A Retrospective Cohort Study.

Plastic and reconstructive surgery. Global open, 12(8), e6082

View on PubMed ↗Publisher’s paper ↗

Citation

Al-Saghir, Tala; Hall, Jamie; Diffley, Michael; Tang, Amy; Teitelbaum, Abigail; Tepper, Donna G; Darian, Vigen; Evangelista, Maristella; Atisha, Dunya. (2024). Marijuana's Impact On Implant-based Breast Reconstruction: A Retrospective Cohort Study.. Plastic and reconstructive surgery. Global open, 12(8), e6082. https://doi.org/10.1097/GOX.0000000000006082