Anesthesiology is the specialty that learned simple routines can protect patients better than extra drugs.
In May 2000, the New England Journal of Medicine published a trial about sedating patients on a breathing machine in intensive care. These patients receive a constant drip of sedative drugs. The drip keeps them calm, but it may also keep them on the machine longer. The trial asked whether switching the drip off each day could help them recover faster. It took 128 adults on breathing machines. The staff stopped the sedatives every day for one group, until each patient woke up. The other group had the drip stopped only when their doctors chose. The patients woken each day needed the machine for a median of 4.9 days. The other patients needed it for 7.3 days. The patients woken each day also left intensive care after 6.4 days. The other patients left after 9.9 days. Complications were no more common in the patients woken each day. Letting patients wake up each day had shortened their time on the machine.
Eight years later, in May 2008, The Lancet published a trial about protecting the heart during surgery. People with narrowed arteries can have a heart attack around the time of an operation. Beta blockers are drugs that slow the heart. Earlier trials of beta blockers during surgery had given conflicting results. This trial gave 8,351 patients either a beta blocker, metoprolol, or a placebo. They started it two to four hours before surgery and took it for 30 days. The drug did protect the heart. Heart attacks affected 4.2% of the patients on metoprolol. They affected 5.7% of the patients on placebo. But the drug also did harm. Death affected 3.1% of the patients on metoprolol. It affected 2.3% of the patients on placebo. Strokes doubled, from 0.5% to 1.0%. The authors warned that patients were unlikely to accept these risks. A drug meant to protect patients during surgery had cost lives.
Eight months later, in January 2009, the New England Journal of Medicine published a study about a checklist for the operating theatre. Complications of surgery are common, and many of them can be prevented. The study asked whether a checklist of 19 items could make surgery safer. The checklist was designed to help the surgical team talk to each other and work the same way every time. Eight hospitals in eight cities took part, from Seattle and London to New Delhi and Ifakara in Tanzania. The researchers recorded 3,733 operations before the checklist arrived. They then recorded 3,955 operations after it. The study compared the same hospitals before and after, not two random groups. Deaths fell from 1.5% to 0.8%. Complications fell from 11.0% to 7.0%. A list of 19 checks had nearly halved the deaths.
These are three of the thousands of studies that shaped modern anesthesiology. They taught anesthesiology that waking sedated patients each day gets them off the breathing machine sooner, that a drug given to protect the heart during surgery can cost lives, and that a simple checklist can nearly halve surgical deaths, and each time the answer was in a paper years before it was in a textbook.
It is still happening. Recently, in February 2026, Nature Medicine published a trial about opioids after surgery. Patients often go home with opioid painkillers after keyhole gynaecological surgery, even though their pain is usually low. The trial asked whether these patients needed opioids at all. It gave 110 women either a prescription with no opioids or a small prescription of five opioid tablets. Both groups also got a mix of other painkillers. The two groups reported the same pain the day after surgery. Pain scores averaged 3.1 without opioids. They averaged 3.5 with them. Nausea and vomiting affected 14.3% of the women without opioids. They affected 35.2% of the women with opioids. No woman in the opioid-free group needed rescue opioids. Only 27.8% of the women with the opioid prescription took an opioid by the day after surgery. Leaving out the opioids had spared patients the nausea, and the pain was no worse. Practice follows the literature as it goes. It is a good culture. It has exactly one cost.
The literature grows faster than anyone can read it.
Across the medical topics an anesthesiologist needs to stay up to date on, from postoperative pain management and nerve blocks to ICU sedation and difficult airways, around 240 full-text papers now arrive every week. That is about 1,000 a month, and more than 12,000 a year. Perioperative care alone is 64 of each week’s 240. Chronic pain management is 52. These are not press releases or opinion pieces. They are the same kind of paper as the sedation trial and the checklist study, and somewhere in each week’s 240 are the handful that will change a prescription.
It is tempting to believe that experience closes the gap, that twenty years of clinic teach what the papers teach. The evidence points the other way. A systematic review of 62 studies found that in most of them, more years in practice went with lower adherence to current standards of care. Experience is not what keeps an anesthesiologist current. Reading is. And reading is the one thing the week does not have room for.
So we built the tool you need to stay up to date.
We summarise the latest research for you and send it directly to your email inbox, every week, or whenever you choose.
Women sent home without opioids after keyhole gynecologic surgery had the same pain and less nausea
TakeawayIn 110 women having outpatient laparoscopic gynecologic surgery, an opioid-free discharge prescription gave the same pain on the day after surgery as five opioid tablets, 3.1 against 3.5, and less nausea and vomiting, 14.3% against 35.2%.
Pain scores are low after minimally invasive gynecologic surgery, yet opioids are still overprescribed. This single-blind trial randomised 110 women without prior pain conditions to a multimodal opioid-free exit prescription or to a restrictive opioid prescription of five 1 mg hydromorphone tablets, alongside multimodal analgesia.
- •Pain on day 1: 3.1 vs 3.5 (P = 0.31); day 7: 1.0 vs 1.5 (P = 0.14).
- •Nausea and vomiting: 14.3% vs 35.2% (P = 0.01). No rescue opioids needed in the opioid-free group.