What does this research mean for the field?

In robotic surgery, intrathecal analgesia regimens containing the local anesthetic levobupivacaine, but not morphine alone, are associated with significantly lower intraoperative opioid exposure. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To isolate the specific contribution of intrathecal local anesthetics from intrathecal opioids regarding intraoperative opioid requirements, fluid administration, and postoperative pain.

September 10, 2026Clinics and PracticeOpen Access

The Intrathecal Analgesia in Robotic Surgery (IARS) Study: Real-World Associations with Intraoperative Opioid Exposure, Fluid Administration, and Postoperative Pain-Free Recovery

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To isolate the specific contribution of intrathecal local anesthetics from intrathecal opioids regarding intraoperative opioid requirements, fluid administration, and postoperative pain.
Single-center retrospective cohort study evaluating N=207 adults undergoing elective robotic surgery between May 2024 and July 2025.
Evaluated mutually exclusive intrathecal regimens combining morphine and varying doses of levobupivacaine versus no subarachnoid analgesia using multivariable Gamma and logistic regression models.
Levobupivacaine-containing regimens significantly lowered intraoperative opioid exposure compared with no subarachnoid analgesia (overall p < 0.001), achieving reductions of −36.4% to −44.8%, whereas morphine alone had no significant effect (+14.0%; 95% CI, −0.9 to +31.1).
Remifentanil administration declined with higher levobupivacaine doses (98.7% at 0 mg, 88.6% at 5 mg, and 10.0% at 10 mg), with isolated dose effects of −44.3% (5 mg) and −59.3% (10 mg).
Subarachnoid analgesia was associated with higher odds of an entirely pain-free 48-hour recovery (adjusted OR, 3.33; 95% CI, 1.06–11.79) and adjusted decreases in intraoperative fluid volumes for specific regimens.

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Implication

Retrospective cohort study reveals reduced intraoperative opioid exposure with intrathecal levobupivacaine during robotic surgery, suggesting a key dose-dependent role for local anesthetics.

Cite This Study

Romanelli et al. (2026) studied this question.

synapsesocial.com/papers/6aa27bfe58559d80afc75826 https://doi.org/10.3390/clinpract16090167

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Implication

Retrospective cohort study reveals reduced intraoperative opioid exposure with intrathecal levobupivacaine during robotic surgery, suggesting a key dose-dependent role for local anesthetics.

The Intrathecal Analgesia in Robotic Surgery (IARS) Study: Real-World Associations with Intraoperative Opioid Exposure, Fluid Administration, and Postoperative Pain-Free Recovery

Key Points

Discussion

Implication

Cite This Study

The Intrathecal Analgesia in Robotic Surgery (IARS) Study: Real-World Associations with Intraoperative Opioid Exposure, Fluid Administration, and Postoperative Pain-Free Recovery

Key Points

Discussion

Implication

Cite This Study

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