Qualifies· weakORCH-E032
Linganna 2015: taxane-treated surgical patients show altered hemodynamic response — not a measured dose difference
- what the source states
- A retrospective study of surgery for nonmetastatic breast cancer compared patients who had received neoadjuvant taxane chemotherapy — which hyperstabilizes microtubules — against those who had not, using hemodynamic change in response to incision as a surrogate for anesthetic depth. Taxane-treated patients showed a greater blood-pressure change on incision.
- what we infer
- Filed with a correction attached, because the paraphrase that circulates ("patients on microtubule stabilizers required more anesthetic") overstates what was measured: the published endpoint is a hemodynamic surrogate, not a titrated dose requirement. As evidence for a microtubule contribution in humans it is suggestive and weak — an uncontrolled retrospective in patients who differ in many ways beyond their microtubules — but it is the only human observation in this case's epothilone/taxane line, and it points the same direction as the rodent work.
- limitations
- Retrospective and uncontrolled; neoadjuvant chemotherapy patients differ systematically in fitness, medication, and disease burden.
- Blood-pressure response to incision is a weak surrogate for anesthetic depth and is influenced by autonomic and cardiovascular factors independent of consciousness.
- Full text not read; characterization from the publisher record and abstract-level sources.