IntubationInjuries.

Modern anesthesia makes general anesthesia extraordinarily safe — but that safety rests on successful airway management. The American Society of Anesthesiologists Difficult Airway Algorithm formalizes the steps a provider is expected to follow when the airway is known or anticipated to be difficult — from preoperative assessment through backup devices (supraglottic airways, video laryngoscopes) to surgical-airway rescue. Deviation from that algorithm, when it causes injury, is the core malpractice pattern in this domain.

That said, many intubation injuries are genuinely incidental — a chipped tooth during a structurally difficult intubation, brief hoarseness that resolves in a day, mild lip bruising. The consent form discloses these risks, and most patients accept them as the price of general anesthesia. What the consent does not cover is a negligent technique or a failure to plan.

Remember that airway injuries occur on a spectrum. At one end is the transient sore throat. At the other is death from unrecognized esophageal intubation. The spectrum matters to both the medical evaluation and the damages analysis. Severity determines where a claim falls on the value axis, but breach of the standard of care is a separate question that applies across the severity range.

Dental injury is the most common intubation-related complication — reported in roughly 1 in every 150 to 1,000 intubations depending on the population. Most are minor: a chipped incisor, a loosened crown, a slight fracture that dentistry can repair. Some are significant: multiple extracted teeth, fractures extending into the root, damage to fixed bridgework.

The standard of care protections for dental injury include:

• Preoperative dental assessment. The airway examination should document the condition of the teeth, any compromised restorations, and any pre-existing injury. Patients with extensive dental work, loose teeth, or prior difficult intubation should be flagged.
• Tooth protection devices. In high-risk patients, a custom or commercial tooth-protection guard can be placed over the upper incisors before laryngoscopy.
• Video laryngoscopy. A video laryngoscope reduces the need for direct force against the upper teeth and is often preferred in patients with dental risk factors.
• Avoiding the teeth as a fulcrum. Trained practitioners are taught never to use the upper teeth as a leverage point against the blade. A blade-lifting motion that pries against the teeth is a technique error, not a difficult-airway event.

A single chipped tooth in a patient with well-maintained teeth and no documented difficult-airway findings is usually a disclosed risk. Multiple broken or extracted teeth, particularly without a documented difficult-airway assessment, shift the analysis. The record is where the difference is established.

The vocal cords are delicate structures, and the endotracheal tube passes directly between them. Injury patterns include:

• Transient hoarseness. Common and expected for 24 to 48 hours after extubation. Usually resolves without intervention. Persistent hoarseness beyond a week deserves evaluation.
• Arytenoid cartilage dislocation. The small cartilages at the back of the larynx can dislocate during rough intubation or extubation. Produces hoarseness, pain with swallowing, and, if untreated, permanent voice change. Early diagnosis (within 48 hours) and reduction can restore function; delayed diagnosis often cannot.
• Vocal cord granuloma. Chronic irritation from the tube or cuff can produce granulation tissue that persists after extubation, causing hoarseness that requires surgical excision.
• Recurrent laryngeal nerve injury. The nerves innervating the vocal cords can be injured by cuff overinflation, prolonged intubation, or direct trauma during intubation. Injury produces vocal cord paralysis on the affected side.
• Bilateral vocal cord paralysis. Rare but catastrophic. Both cords are paralyzed in a partially-closed position, producing airway obstruction that often requires tracheostomy.

Voice-dependent professions — singers, teachers, attorneys, broadcasters, clergy — face a particular challenge. A permanent voice change that would be a quality-of-life injury for most patients can be a career-ending injury for these patients, with corresponding damages. Economic losses in such cases can run into millions.

Esophageal intubation by itself is not malpractice — the esophagus sits immediately posterior to the trachea, and even experienced providers occasionally place the tube there on the first attempt. What is malpractice is the failure to recognize the misplacement and correct it before the patient is harmed.

The recognition standard rests on capnography. When a tube is in the trachea, every exhalation produces a characteristic CO2 waveform. When the tube is in the esophagus, there is no waveform — the capnography screen is flat or shows only a small decaying signal from swallowed air. The ASA Standards for Basic Anesthetic Monitoring require continuous capnography during every general anesthetic with an endotracheal tube. Auscultation of breath sounds is a secondary check but is known to be unreliable in the noise of an operating room.

When a case involves an unrecognized esophageal intubation:

• Was capnography in use? If not, the facility and team face liability for the equipment deficit. This should never happen in a modern operating room.
• If capnography was in use, was the signal documented? The record should show the capnography tracing or narrative documentation of CO2 waveform after intubation.
• If no CO2 was detected, what did the team do? The correct response is immediate tube removal and reintubation. Continuing surgery with a silent capnograph is prima facie below the standard of care.
• How long did the hypoxia last? Minutes of inadequate oxygenation produce brain injury. The timeline is often reconstructable from the record.

Cases involving unrecognized esophageal intubation are among the most catastrophic in anesthesia malpractice. Outcomes range from hypoxic brain injury with permanent disability to death. The evidentiary record is usually clear — capnography either showed CO2 or it did not — and that clarity drives substantial settlements and verdicts.

Aspiration of gastric contents into the lungs can cause aspiration pneumonitis (chemical injury from gastric acid), aspiration pneumonia (bacterial infection), acute respiratory distress syndrome (ARDS), and, in severe cases, death. Pulmonary injury from acid aspiration can be severe even with small volumes of inhaled fluid.

The fasting guidelines are well-established:

• Clear liquids: 2 hours before anesthesia
• Breast milk: 4 hours before anesthesia
• Light meal: 6 hours before anesthesia
• Heavy meal (fried or fatty foods): 8 hours before anesthesia

When a patient aspirates because they were not properly fasted — or because the staff failed to confirm fasting status — the facility and team face a documentation-level liability question. When a patient aspirates in a known high-risk scenario (emergency surgery, late-stage pregnancy, trauma) without a rapid-sequence induction protocol being followed, the question shifts to technique deviation. Both categories appear in anesthesia malpractice litigation.

Some airways are predictably difficult. Patients with short thick necks, limited mouth opening, limited neck extension, high-arched palates, obesity, prior neck radiation, prior difficult intubation history, or certain congenital syndromes have anatomy that makes standard laryngoscopy harder. The ASA Difficult Airway Algorithm provides a step-by-step decision framework for these cases.

Standard preparation in a known or anticipated difficult airway includes:

• Documented Mallampati score and neck exam. A formal airway assessment with specific findings noted in the preoperative record.
• Plan A and backup plans. A stated intubation plan (e.g., awake fiberoptic, video laryngoscopy), and stated backup strategies if Plan A fails.
• Equipment ready in the room. Video laryngoscope, multiple laryngoscope blades, supraglottic airway (LMA), flexible fiberoptic scope, and surgical-airway kit immediately available.
• Trained backup personnel. A second anesthesiologist or an ENT surgeon available, particularly for known-severe difficult airways.
• Consideration of awake intubation. For the highest-risk airways, performing intubation before induction preserves the patient's own airway reflexes.

A cannot-intubate-cannot-ventilate event in a patient with no preoperative red flags is usually a tragedy, not malpractice. A cannot-intubate-cannot-ventilate event in a patient with multiple documented risk factors and no difficult-airway plan is, unfortunately, a recurring malpractice pattern.

Under Florida Statute § 766.102, no medical malpractice case can be filed without a corroborating expert affidavit from a provider in the same specialty. For an intubation injury case, that expert is a board-certified anesthesiologist. The expert reviews the anesthesia record, the preoperative airway assessment, any imaging, and the subsequent medical records — and either confirms a breach of the standard of care caused the injury or does not.

Secondary experts frequently include:

• Otolaryngologist (ENT). For vocal cord, laryngeal, and pharyngeal injuries. An ENT provides the clinical evaluation of the injury itself and often the treatment record.
• Dentist or oral surgeon. For dental injury documentation and repair cost estimates.
• Pulmonologist. For aspiration-related lung injury.
• Neurologist and neuropsychologist. For hypoxic brain injury from failed or delayed intubation.
• Life care planner and economist. For damages valuation in catastrophic injury cases.

All of these pieces come together in the pre-suit investigation phase — the 90 days required by Florida Statute § 766.203 before suit can be filed. A firm engaged early has the time to build the record properly.