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Medico-legal liability of injuries arising from laryngoscopy

Published online by Cambridge University Press:  20 November 2023

Christian G Fritz*
Affiliation:
Department of Otorhinolaryngology – Head & Neck Surgery, University of Pennsylvania, Philadelphia, USA
Stylianos D Monos
Affiliation:
Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania, USA
Dominic Romeo
Affiliation:
Perelman School of Medicine at the University of Pennsylvania, Philadelphia, USA
Anne Lowery
Affiliation:
Department of Otorhinolaryngology – Head & Neck Surgery, University of Pennsylvania, Philadelphia, USA
Katherine Xu
Affiliation:
Perelman School of Medicine at the University of Pennsylvania, Philadelphia, USA
Joshua Atkins
Affiliation:
Department of Anesthesiology and Critical Care, University of Pennsylvania, Philadelphia, USA
Karthik Rajasekaran
Affiliation:
Department of Otorhinolaryngology – Head & Neck Surgery, University of Pennsylvania, Philadelphia, USA Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA, USA
*
Corresponding author: Christian G Fritz; Email: christian.g.fritz@gmail.com
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Abstract

Objective

Dental and mucosal injuries from laryngoscopy in the peri-operative period are common medico-legal complaints. This study investigated lawsuits arising from laryngoscopy.

Methods

Westlaw, a legal database containing trial records from across the USA, was retrospectively reviewed. Plaintiff and/or defendant characteristics, claimed injuries, legal outcomes and awards were extracted.

Results

Of all laryngoscopy-related dental or mucosal injuries brought before a state or federal court, none (0 per cent) resulted in a defence verdict against the provider or monetary gain for the patient. Rulings in the patient's favour were observed only when laryngoscopy was found to be the proximate cause of multiple compounding complications that culminated in severe medical outcomes such as exsanguination, septic shock or cardiopulmonary arrest.

Conclusion

Proper laryngoscopy technique and a robust informed-consent process that accurately sets patients' expectations reduces litigation risk. Future litigation pursuits should consider the low likelihood of malpractice allegation success at trial.

Type
Main Article
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
Copyright © The Author(s), 2023. Published by Cambridge University Press on behalf of J.L.O. (1984) LIMITED

Introduction

Laryngoscopy is a procedure that enables visualisation of the larynx. It is instrumental in the setting of endotracheal intubation and surgical procedures of the airway. As with any procedure, complications may arise. Mucosal injury involving the lips or angles of the mouth have been reported in up to 75 per cent of suspension laryngoscopy cases.Reference Klussmann, Knoedgen, Wittekindt, Damm and Eckel1 Moreover, dental injury has a highly variable and provider-dependent incidence, which may range from 25–39 per cent to as low as 0.02–0.1 per cent.Reference Holzer2Reference Kim, Lee and Bahk15 It is well established that dental injury occurring in the peri-operative period is the most common medico-legal complaint against anaesthesiologists, comprising more than one-third of all legal claims within the specialty.Reference Owen and Waddell-Smith9,Reference Yasny12,Reference Cook, Scott and Mihai16

In addition to allegations involving dentition, there are also less-common complications directly mediated by the laryngoscope that may include gingival trauma in edentulous patients;Reference Mourão, Moreira, Barbosa, Carvalho and Tavares17 injury to the pharyngeal arches and tonsillolingual sulci;Reference Pham, Lentner and Hu18 lingual, glossopharyngeal and hypoglossal nerve injury;Reference Klussmann, Knoedgen, Wittekindt, Damm and Eckel1,Reference Rosen, Andrade Filho, Scheffel and Buckmire19 and ischaemic injury of the tongue.Reference Lindemann, Kamrava, Sarcu and Soliman20,Reference Onal, Colpan, Elsurer, Bozkurt, Onal and Turan21 Although the majority of injuries caused by the laryngoscopy are limited in severity, any payment made to patients may be reported and become part of the National Practitioner Data Bank.Reference Kain22 This malpractice reporting is known to affect future job prospects and reduce clinical productivity.Reference Shanafelt, Balch, Bechamps, Russell, Dyrbye and Satele23Reference Seabury, Chandra, Lakdawalla and Jena26 Therefore, a clear understanding of these allegations and legal outcomes is of the utmost importance.

Prior reports utilising the Westlaw legal database have addressed related topics that are more rare and severe, such as iatrogenic dysphonia,Reference Ta, Liu and Krishna27 laryngotracheal stenosis,Reference Svider, Pashkova, Husain, Mauro, Eloy and Baredes28 and vocal fold paralysis.Reference Swonke, Shakibai and Chaaban29 Indeed, such reviews have established the Westlaw database as a representative source of information within the field of otolaryngology.

Capturing information for approximately 20 patients is not uncommon for articles addressing rare events with few corresponding malpractice cases.Reference Kovalerchik, Mady, Svider, Mauro, Baredes and Liu30Reference Winford, Wallin, Clinger and Graham32 Given that dental and mucosal injuries are much more prevalent, understanding the legal consequences of these complications may be relevant to a larger population of interested parties, both plaintiffs and defendants. To the best of our knowledge, this is the first report in the literature to use a legal database to retrospectively assess the outcomes of medical malpractice cases involving laryngoscopy in the USA.

The current study seeks to understand the clinical circumstances, medical sequelae, and financial implications of laryngoscopy-associated injury litigation. This pursuit may inform recommendations that enhance patient safety and provide new insights for providers facing a lawsuit alleging negligence during laryngoscopy. Findings from this analysis could also serve as an educational tool for anaesthesiology and otolaryngology residents, nurse anaesthetists in training, and others learning how safely to manipulate the airway.

Materials and methods

An online legal research database (Westlaw, West Publishing Co, St Paul, MN), was used to extract details from pertinent cases for the purposes of this retrospective analysis. This subscription-based database is widely used by legal professionals in the USA to understand trial precedent arising from federal and state court cases. Jury verdict and settlement reports were reviewed for relevance based on the following combination of terms: ‘malpractice’ AND (‘laryngoscopy’ OR ‘panendoscopy’ OR ‘microlaryngoscopy’) OR ‘laryngoscope’ OR ‘McGrath’ OR ‘C-MAC’ OR ‘intubation’ OR ‘intubate’ AND ‘tongue’ OR ‘lip’ OR ‘mouth’ OR ‘throat’ OR ‘gum’ OR ‘mucosa’ OR ‘tooth’ OR ‘teeth’ OR ‘dental’ OR ‘bridge.’ This study was approved by the Institutional Review Board (IRB) of University of Pennsylvania Health System.

From the 155 initial results, cases were excluded for the following reasons: incidental mention of keywords (i.e. laryngoscopy was not an alleged mechanism of injury in litigation) (104) and duplicate cases (31). The remaining 20 verdict and settlement reports were comprehensively evaluated for several details including: year, state, patient demographics, defendant specialty, court type, procedure performed, claimed injury, case outcome, damage amount awarded, and allegations involving either incomplete informed consent, requirement of reparative procedures, functional deficits incurred, psychiatric and/or psychological sequelae, depression and/or loss of enjoyment of life, and other alleged causes of negligence. Data collection was completed in October 2022. Descriptive statistical analyses were performed using SPSS software (version 24, IBM).

Results and analysis

Twenty lawsuits that took place between 1990 and 2018 met inclusion criteria. Cases were stratified into dental and/or mucosal injuries (n = 12, 60 per cent) and other laryngoscopy complications involving the tongue, prosthodontic device, pharynx or multifactorial (n = 8, 40 per cent) (Table 1). The majority of plaintiffs were female and middle-aged. Implicated providers were most commonly anaesthesiologists and Certified Registered Nurse Anaesthetists (CRNAs). The most frequently cited allegations involved medical negligence (75.0 per cent), improper history and physical exam (33.3 per cent), and incomplete informed consent (16.7 per cent).

Table 1. Comparison of case characteristics, mucosal and/or dental injuries vs other laryngoscopy complications

*Arbitration with a known award of $0 and unknown settlement amount; SD = standard deviation; CRNA = Certified Registered Nurse Anaesthetist.

Specific claimed injuries are detailed in Table 2. All cases were related to laryngoscope use during pre-operative intubation procedures. No case of dental and/or mucosal injury led to a verdict in favour of the plaintiff. Among all captured dental injury cases, the most severe involved avulsion of three teeth and fracture of a fourth tooth. The least severe injury brought before the courts was a laryngoscope-mediated mucosal laceration that allegedly caused a throat infection. Taken together, the average pay-out for dental and/or mucosal injury was $0.

Table 2. Laryngoscopy litigation outcomes and case characteristics

MD = Doctor of medicine; DO = Doctor of osteopathic medicine; CRNA - Certified registered nurse anesthetist

Cases culminating in a plaintiff verdict or award were heterogeneous in their site of injury, and were not limited to dental or mucosal structures. These cases tended to have multiple compounding complications that resulted in severe morbidity. The average award for plaintiff verdicts was $592,119 (range $0–1.22 million). Of those cases returning a plaintiff verdict, three of six (50.0 per cent) resulted in patient death. For the remaining three non-morbid cases, there was one multifactorial incident in which an internal medicine physician was held liable for excessive prescription of sedatives that caused respiratory failure necessitating intubation, which was complicated by dental avulsion from laryngoscope use. The remaining two plaintiff–verdict cases involved a transmural pharynx perforation and prosthetic bridge disruption, the latter of which resulted in the smallest payment awarded ($7,895).

Discussion

Malpractice litigation is responsible for increased health care costs and is often viewed as adversarial by physicians.Reference Annas33Reference Nahed, Babu, Smith and Heary36 Regardless of outcome, litigation can affect a practitioner's reputation among peers and patients.Reference Burkle, Martin and Keegan37 Given that dental and mucosal injuries are almost universally presented as possible complications of laryngoscopy during the consent process, some providers may find it perplexing that these complaints comprise more than one-third of all lawsuits in the field of anaesthesiology.Reference Owen and Waddell-Smith9,Reference Yasny12,Reference Cook, Scott and Mihai16 In many of these cases, poor documentation of existing problems with mucosa or dentition prior to laryngoscopy make such cases viable. In this report, allegations of medical malpractice that culminated in a lawsuit brought before a court of law were comprehensively analysed to reveal new insights into a key gap in the literature.

We report that dental and/or mucosal injury cases were unanimously ruled in favour of the defendant medical provider with none resulting in payment awards to a plaintiff. This outcome was consistently observed among both anaesthesiologist and certified registered nurse anaesthetist defendants. While laryngoscopy is commonly performed by otolaryngologists, there was no documented lawsuit brought before the court involving laryngoscopy-associated injury alleged against an otolaryngologist. This could be due to a lower volume of laryngoscopies performed among otolaryngologists. Although anaesthesia providers do perform the majority of these procedures in the peri-operative period, the fact that no allegation involved an otolaryngologist could suggest variability in technique and strain forces utilised between different specialties. Simulation-based exercises are one effective method to help minimise laryngoscope-associated injuries. Such educational resources may prove useful in training clinicians on best practices for laryngoscopy.Reference Batchelder, Steel, Mackenzie, Hormis, Daniels and Holding38Reference Vanderbilt, Mayglothling, Pastis and Franzen40 Regardless of the specialty involved, a dental- or oral-surgery consultation should be sought upon recognition of any iatrogenic dental injury.

In addition to dental and mucosal injuries, it is also important to be mindful of delicate soft-tissue structures in contact with the laryngoscope. Indeed, the highest award ($1,225,000) was returned for a case in which a GlideScope® caused a tongue laceration, which lead to swelling of the tongue, airway obstruction, cardiopulmonary arrest, anoxic brain injury, aspiration pneumonia, septic shock and death.

Fortunately, severe complications directly attributable to laryngoscopy were rare. When such events did occur, they were commonly due to unforeseen anatomical circumstances. For instance, one case involved displacement of dentures causing transmural pharynx perforation, internal bleeding, aspiration, lung collapse, shock and death. Another case involved exsanguination due to disruption of a known congenital vascular malformation. As a result of the aforementioned cases, improper history and physical examination was the second most commonly cited allegation among all cases. This highlights the need for continued focus on peri-operative evaluation that adheres to previously established American Society of Anesthesiologists guidelines and consensus statements (https://www.asahq.org/standards-and-guidelines).

Although the field of anaesthesiology was implicated in the majority of laryngoscope-associated malpractice allegations, the authors think that the results of this report are of greatest relevance to otolaryngologists. In contrast to laryngoscopy performed by anaesthesia providers, laryngoscopy performed by otolaryngologists is often prolonged in duration and holds more potential for complications. Otolaryngologists routinely perform in-office flexible laryngoscopy, indirect mirror laryngoscopy, laryngeal stroboscopy, direct laryngoscopy and suspension laryngoscopy. When considering the high combined prevalence of these procedures, the fact that no laryngoscope injury malpractice case tried to date has implicated an otolaryngologist suggests that laryngoscopy procedures are highly safe and low-risk when performed by an otolaryngologist–head and neck surgeon. This represents an important counselling point that may provide a source of reassurance to patients who are averse to laryngoscopy. While the procedure may be uncomfortable and fear-inducing in some cases, patients may find it reassuring to know that no patient has ever taken their otolaryngologist to court over complications arising from a procedure to visualise the larynx.

Although claims of dental injury are very common, formal lawsuits brought before the courts are exceedingly rare. While prior reports have documented thousands of such dental injury claims,Reference Christensen, Baekgaard and Rasmussen41,Reference Kotani, Inoue and Kawaguchi42 these tend to culminate in out-of-court settlements, arbitration or a summary judgement motion without a trial. The present study is unique in that it is the first to analyse lawsuit outcomes as determined by objective review via trial by jury in a federal or state courtroom. A recent comprehensive review of a French legal database identified just 24 lawsuits involving peri-operative dental injuries.Reference Diakonoff, De Rocquigny, Tourtier and Guigon43 This relatively low case number highlights the rarity of these trials and reaffirms our assertation that the present review successfully captures all available court records on laryngoscope-mediated dental injuries. This report, therefore, may represent a valuable resource for predicting future litigation outcomes and may be referenced by expert witnesses under oath as precedent to justify verdicts.

  • Dental and mucosal injuries caused by laryngoscopy procedures in the peri-operative period are common sources of frustration for patients

  • No malpractice court trial pertaining to laryngoscopy-related dental or mucosal injuries has successfully proven this allegation in court

  • No allegations were levied against otolaryngologists; primary defendants were most commonly anaesthesiologists (60 per cent) and certified registered nurse anaesthetists (20 per cent)

  • Given that laryngoscopy complications comprise more than one-third of all lawsuits against anaesthesiologists, the findings of this report are of interest to a large group of providers

There are several limitations to this study. Included cases were limited to those attributable to laryngoscopy, but not the process of intubation, which can be an independent source of litigation with a distinct set of injuries. Moreover, the Westlaw database only contains jury verdict reports from federal or state courts, thereby failing to capture cases that do not progress to this stage. Verdict and settlement summaries are also highly heterogeneous sources of information with variable degrees of information disclosed, as deemed necessary by attorneys privy to the case. Finally, most malpractice litigation does not go to trial, with up to 85 per cent of cases being dismissed in a summary judgment or resolved with an out-of-court settlement.Reference Jena, Seabury, Lakdawalla and Chandra44,Reference Jena, Chandra, Lakdawalla and Seabury45 Because the cost of defending cases in court can be vastly disproportionate to the cost of dental repairs, many dental claims may be settled informally.Reference Givol, Gershtansky, Halamish-Shani, Taicher, Perel and Segal11 Taken together, the cases presented herein likely represent a small subset of all allegations surrounding laryngoscopy-associated injuries. Despite these limitations, our analysis provides important insights that can be used to better understand laryngoscopy litigation, inform educational endeavours and improve patient care.

Conclusion

Among laryngoscopy-associated injury cases, complications involving dental and mucosal structures in the peri-operative period were the most commonly litigated cases. No case limited to dental or mucosal injury resulted in monetary gain for the patient. Given that laryngoscopy complications may comprise more than one-third of all legal claims against anaesthesiologists, these findings are of interest to a relatively large group of providers and offer evidence-based reassurance that lawsuits will most likely return a defence verdict if the case is tried before a jury. Efforts should be made to perform laryngoscopy with proper caution and thoroughly discuss risks delineated on consent forms to ensure that patients are fully aware of potential complications.

Acknowledgements

None

Funding

This research received no specific grant from any funding agency in the public, commercial or not-for-profit sectors.

Competing interests

None declared

Ethical standards

The authors assert that all procedures contributing to this work comply with the ethical standards of the relevant national and institutional guidelines on human experimentation set forth by the University of Pennsylvania Health System and Helsinki Declaration of 1975, as revised in 2008.

Footnotes

Karthik Rajasekaran takes responsibility for the integrity of the content of the paper

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Figure 0

Table 1. Comparison of case characteristics, mucosal and/or dental injuries vs other laryngoscopy complications

Figure 1

Table 2. Laryngoscopy litigation outcomes and case characteristics