Experts Say 4 Factors Can Shift Anesthesia Needs by 20% or 6% a Decade
Updated
Updated · The Washington Post · Jul 26
Experts Say 4 Factors Can Shift Anesthesia Needs by 20% or 6% a Decade
1 articles · Updated · The Washington Post · Jul 26
Summary
Nearly 20% more inhaled anesthetic may be needed for some natural redheads, experts said, citing research that also found greater pain sensitivity and weaker response to lidocaine in red-haired women.
Chronic alcohol, cannabis and opioid use can raise anesthesia and post-surgery pain-control needs because tolerance builds and liver enzymes break drugs down faster; a 2024 study of 1,600-plus cannabis users linked use to higher pain scores and opioid use.
About 6% less inhaled anesthetic is typically needed per decade after age 40, while frailty, sepsis and cirrhosis can also lower requirements; obstructive sleep apnea raises breathing risks from opioid pain medicines.
Doctors said full disclosure before surgery helps tailor safer dosing, though anesthesiologists continuously adjust medications during procedures based on patient response, vital signs and sometimes brain monitoring.
Could hiding your weekend cannabis habit from your doctor actually cause you to wake up during a major surgery?
Why does having natural red hair genetically rewire your body to resist standard anesthesia and demand significantly higher doses?
Can advanced preoperative frailty screenings effectively prevent irreversible cognitive decline in elderly patients recovering from general anesthesia?