When you tell anyone in healthcare that “sedation” to the point of coma is given in dentists’ and oral surgeons’ offices every day, without a separate anesthesia professional present to give the medications and monitor the patient, the response often is disbelief.

“But they can’t do that,” I’ve been told more than once.

Yes, they can. Physicians are NOT allowed to do a procedure and provide sedation or general anesthesia at the same time – whether it’s surgery or a GI endoscopy. But dental practice grew up under a completely different regulatory and legal structure, with state dental boards that are separate from medical boards.

In many states, dentists can give oral “conscious” sedation with nitrous oxide after taking a weekend course, aided only by a dental assistant with a high school diploma and no medical or nursing background. Deaths have occurred when they gave repeated sedative doses to the point that patients stopped breathing either during or after their procedures.

Oral surgeons receive a few months of education in anesthesia during the course of their residency training. They are legally able to give moderate sedation, deep sedation or general anesthesia in their offices to patients of any age, without any other qualified anesthesia professional or a registered nurse present. This is known as the “single operator-anesthetist” model, which the oral surgeons passionately defend, as it enables them to bill for anesthesia and sedation as well as oral surgery services.

Typically, oral surgeons and dentists alike argue that they are giving only sedation – as opposed to general anesthesia – if there is no breathing tube in place, regardless of whether the patient is drowsy, lightly asleep, or comatose.

The death of Caleb Sears

Against this backdrop of minimal regulation and infrequent office inspections, a healthy six-year-old child named Caleb Sears presented in 2015 for extraction of an embedded tooth. Caleb received a combination of powerful medications – including ketamine, midazolam, propofol, and fentanyl – from his oral surgeon in northern California, and stopped breathing. The oral surgeon failed to ventilate or intubate Caleb, breaking several of his front teeth in the process, and Caleb didn’t survive.

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No, I’m not talking about putting fentanyl into my own veins — a remarkably bad idea. I’m questioning the habitual, reflex use of fentanyl, a synthetic opioid, in clinical anesthesiology practice.

I’ve been teaching clinical anesthesiology, supervising residents and medical students, in the operating rooms of academic hospitals for the past 18 years. Anesthesiology residents often ask if I “like” fentanyl, wanting to know if we’ll plan to use it in an upcoming case. My response always is, “I don’t have emotional relationships with drugs. They are tools in our toolbox, to be used as appropriate.”

But I will say that my enthusiasm for using fentanyl in the operating room, as a component of routine, non-cardiac anesthesia, has rapidly waned. In fact, I think it has been months since I’ve given a patient fentanyl at all.

Here’s why.

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Poppies, the original source of opium…  

A fentanyl overdose led to the recent death of musician and singer Prince, according to the medical examiner’s report released June 2. The drug seems likely to become as notorious as propofol did after the death of Michael Jackson in 2009.

For all of us in anesthesiology who’ve been using fentanyl as a perfectly respectable anesthetic medication and pain reliever for as long as we can remember, it’s startling to see it become the cause of rising numbers of deaths from overdose.  Fentanyl is a potent medication, useful in the operating room to cover the intense but short-lived stimulation of surgery. The onset of action is very fast, and the time that the drug effect lasts is relatively brief.

But fentanyl was never intended for casual use. Fentanyl is many times more potent than morphine; 100 micrograms, or 0.1 mg, of IV fentanyl is roughly equivalent to 10 mg of IV morphine. In March, the LA Times reported that 28 overdoses — six of them fatal — occurred in Sacramento over the course of just one week. The victims had taken pills that resembled Norco, a common pain reliever, but in fact the pills were laced with fentanyl. Even tiny amounts were enough to be lethal.

Like all opioids, fentanyl reduces the drive to breathe, and after a large enough dose a patient will stop breathing entirely. In addition to its effect on respiratory drive, fentanyl may also produce rigidity of the muscles in the chest and abdomen, severe enough to hamper attempts to ventilate or perform CPR.

What exactly is fentanyl?

Fentanyl is an inexpensive member of a class of drugs called “opioids”, which are powerful pain relieving medications. The word “opium” is derived from the Greek word for juice, because the juice of the poppy flower was the original source of opium. Starting in Mesopotamia, the opium poppy has been cultivated since at least 3000 BC. The term “opiate” is used to designate drugs derived from opium. Morphine was the first of these, isolated in 1803, followed by codeine in 1832.

The development of techniques to synthesize drugs in a laboratory, as opposed to the cultivation of poppy fields, has led to the use of the term “opioids” to refer to any and all substances that treat pain by acting on opioid receptors in the central nervous system. The term “narcotic” is often used as a synonym. It’s derived from the Greek word for stupor, and is used to refer to any morphine-like drug with the potential for addiction.

Fentanyl is cheap, and the powdered form is being synthesized in clandestine laboratories in the U.S. and Mexico according to news reports. What’s leading to the spate of new overdoses is the fact that some dealers are quietly adding fentanyl to heroin to increase the “high”. A user injects what he thinks is his usual quantity of heroin, not realizing that it may be mixed with fentanyl. The mixture is far more potent and may be deadly.

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