Narrative review of neuraxial potassium chloride administration errors: clinical features, human factors, and prevention measures

A Systematic Review of Antibiotic Administration Incidents Involving Neuraxial Routes: Clinical Analysis, Contributing Factors and Prevention Approaches

INTRODUCTION

This review aimed to investigate the inadvertent administration of antibiotics via epidural and intrathecal routes. The secondary objective was to identify the contributing human and systemic factors.

METHODS

PubMed, Scopus and Google Scholar databases were searched for the last five decades (1973-2023). The author recorded the antibiotics involved, the route of administration, clinical details and consequences in a standardised format. The author utilized the Human Factors Analysis Classification System (HFACS) framework to identify contributing factors.

RESULTS

Twenty publications reported neuraxial administration of antibiotics (adults, 19, paediatric, three patients). Fifteen (of 22) incidents happened in the post-surgical or post-chronic pain procedure period. Most errors (14 of 22) occurred via the epidural route. Cefazolin (six) and gentamicin (five) were the most common among 13 antibiotics involved. Intrathecal cephalosporin incidents (n = 6) were associated with devastating consequences (death, one, permanent residual neurological deficits, three). In the unsafe act category of the HFACS, the perceptual error contributing to occurrences of neuraxial antibiotics administration errors was due to IV-neuraxial device (e.g. intrathecal drain or catheter, epidural catheter) confusion (eight patients) or syringe/infusion bag swap (nine patients).

CONCLUSIONS

Intrathecal cephalosporins and gentamicin administration are associated with devastating consequences. Prevention of neuraxial antibiotic administration requires improvements in clinical deficiencies and the implementation of supporting technological tools to prepare and administer antibiotics correctly, thereby ensuring patient safety.

Inadvertent administration of intravenous anaesthesia induction agents via the intracerebroventricular, neuraxial or peripheral nerve route - A narrative review

Intravenous (IV) medication administration error remains a major concern during the perioperative period. This review examines inadvertent IV anaesthesia induction agent administration via high-risk routes. Using Medline and Google Scholar, the author searched published reports of inadvertent administration via neuraxial (intrathecal, epidural), peripheral nerve or plexus or intracerebroventricular (ICV) route. The author applied the Human Factors Analysis and Classification System (HFACS) framework to identify systemic and human factors. Among 14 patients involved, thiopentone was administered via the epidural route in six patients. Four errors involved the routes of ICV (propofol and etomidate one each) or lumbar intrathecal (propofol infusion and etomidate bolus). Intrathecal thiopentone was associated with cauda equina syndrome in one patient. HFACS identified suboptimal handling of external ventricular and lumbar drains and deficiencies in the transition of care. Organisational policy to improve the handling of neuraxial devices, use of technological tools and improvements in identified deficiencies in preconditions before drug preparation and administration may minimise future risks of inadvertent IV induction agent administration.

Tranexamic acid-associated intrathecal toxicity during spinal anaesthesia: A narrative review of 22 recent reports

Therapeutic use of tranexamic acid (TXA) to minimise blood loss is common during a wide range of surgical procedures. This review aims to explore the clinical features of the accidental intrathecal administration of TXA and to identify contributory factors that might prevent future incidents. The author searched published reports of accidental intrathecal administration of TXA using Medline and Google Scholar databases from July 2018 to September 2022, including error reports in any language but excluding errors via nonintrathecal routes. The human factors analysis classification system (HFACS) framework was used to examine and classify the human and systemic factors that contributed to the errors. Twenty-two errors of accidental intrathecal administration were reported during the search period. The analysis showed that the outcome was death in eight patients (36%) and permanent harm in four (19%). The fatality rate was higher among female individuals (6/13 versus 2/8 male individuals). Two-thirds of errors (15/22) occurred during orthopaedic surgery (10) and lower segment caesarean sections (5). Nineteen of 21 patients developed refractory or super refractory status epilepticus, requiring mechanical ventilation and intensive care for 3 days to 3 weeks for those who survived the initial few hours. Severe sympathetic stimulation resulting in refractory ventricular arrhythmias was the final event in some patients, with death within a few hours. Lack of familiarity with clinical characteristics caused delayed diagnosis or confusion with other clinical conditions. A proposed plan to manage intrathecal TXA toxicity is presented, including immediate cerebrospinal fluid lavage; however, there is no specific approach. The HFACS suggested mistaking look-alike TXA ampoules for local anaesthetic was the predominant cause. The author concludes that inadvertent intrathecal TXA is associated with mortality or permanent harm in more than 50% of patients. The HFACS demonstrates that all errors are preventable.

Cardiovascular Drug Administration Errors During Neuraxial Anesthesia or Analgesia-A Narrative Review

The prevalence and harm associated with inadvertent neuraxial cardiovascular (CV) medication administration errors are unknown. This review aims to analyze neuraxial CV drug administration errors and associated clinical consequences. The secondary objective is to identify the causes and contributory factors in order to prevent future incidents. The author reviewed reports of accidental administration of CV medications via neuraxial routes during spinal or epidural anesthesia or analgesia published in the last 5 decades (1972-2022). Twenty-seven publications reported neuraxial administration of 10 different CV drugs among patients aged 1 to 81. Seventeen of the 33 errors occurred via the epidural route. Digoxin (9 patients), ephedrine (6), metaraminol (4), labetalol (4), and dopamine (3) were frequently involved in the incidents. Intrathecal digoxin (8 patients) was associated with paraplegia and encephalopathy, of whom 4 pregnant women scheduled for elective cesarean delivery sustained permanent lower limb neurologic deficits. Reversible systemic hemodynamic changes were predominant following the administration of epidural inotropes (dobutamine, dopamine, and epinephrine) and vasopressors (ephedrine and metaraminol). Most administrations (30 out of 32) were only bolus injections. All were preventable skill-based errors. The human factor analysis classification system (HFACS) identified poor organizational climate, inadequate supervision of junior doctors, deficiencies in neuraxial task processes, and incorrect visual perception of objects. The HFACS suggests CV medication safety strategies should include better education and training of junior doctors, modifications in neuraxial anesthesia practices, and careful handling of the CV drug ampoules and syringes.

Accidental administration of tranexamic acid into the epidural space: a case report

PURPOSE

Tranexamic acid administration into the epidural space has not been previously reported. We describe our experience managing and investigating a drug error involving incorrect route of tranexamic acid administration through an epidural catheter.

CLINICAL FEATURES

A syringe containing tranexamic acid, intended for intravenous bolus and infusion intraoperatively using microbore tubing, was inadvertently attached to an epidural catheter via the Luer-type connector on the microbore tubing and epidural adapter.

CONCLUSIONS

Saline lavage of the epidural space may be considered if tranexamic acid has been administered into the epidural space. Early multidisciplinary team involvement combined with repeated postevent neurologic monitoring is recommended to guide therapy. Adoption of neuraxial route-specific connectors, when available, may be warranted to reduce Luer-type misconnections.