Cerebral Air Embolism after Esophagogastroduodenoscopy: Insight on Pathophysiology, Epidemiology, Prevention and Treatment.

Abstract

BACKGROUND:

Air embolism is an extremely rare complication that can follow gastrointestinal endoscopy. The most accepted treatment of cerebral air embolism (CAE) is hyperbaric oxygen (HBO). Limited evidence suggests that lidocaine may have a neuroprotective effect. The exact mechanism does not appear to be well elucidated.

METHODS:

We conducted a literature search using multiple combinations of keywords from PubMed and Ovid Medline databases according to the PRISMA guidelines. We included articles with cases of air embolism caused by an esophagogastroduodenoscopy (EGD). We excluded cases related to other procedures e.g. colonoscopy, endoscopic retrograde cholangiopancreatography, cholangioscopy, Kasai procedure, bronchoscopy, laparoscopy or thoracoscopy. We were able to identify 30 cases of CAE associated with EGD. We included our experience in treating one patient with CAE after elective EGD.

RESULTS:

Given the results of our literature search and this patient's characteristics, we chose to treat our patient with HBO and lidocaine infusion. Our case series consists of 31 patients of post EGD CAE, the mean age was 63.7 ± 11.14 years, 38.7% of the patients were women (n = 12). 38.7% of the cases underwent esophageal dilatation (n = 12), while 19.35% had EGD biopsy (n = 6), 9.6% had variceal ligation (n = 3), and 3.22% had variceal banding (n = 1). In 20 out of 31 cases, echocardiography has been documented, 20% of those patients (n = 4) had patent foramen ovale. HBO was used in treatment of 48% of cases (n = 15), among the included patients, 61% survived (n = 19). Our patient showed significant neurological improvement.

CONCLUSIONS:

Despite the rare incidence of CAE during or after EGD, physicians should be aware of this potential complication. In patients who develop sudden acute neurological symptoms, early diagnosis and intervention may prevent devastating neurological injury and death. The most accepted emergent treatment for CAE includes HBO, consideration of lidocaine, and work-up of source of the air embolism.

• Authors: Malik Ghannam, Azizullah Beran, Dana Ghazaleh, Tanner Ferderer, Brent Berry, Mona Al Banna, Leighton Mohl, Christopher Streib, Tapan Thacker, Ivan Matos
• Journal: Journal of stroke and cerebrovascular diseases : the official journal of National Stroke Association (J Stroke Cerebrovasc Dis) Vol. 28 Issue 12 Pg. 104403 (Dec 2019) ISSN: 1532-8511 [Electronic] United States
• PMID: 31563566 (Publication Type: Case Reports, Journal Article, Systematic Review)
• Copyright: Copyright © 2019 Elsevier Inc. All rights reserved.

Chemical References

• Neuroprotective Agents
• Lidocaine

Topics

• Aged
• Aged, 80 and over
• Embolism, Air (epidemiology, physiopathology, prevention & control, therapy)
• Endoscopy, Gastrointestinal (adverse effects)
• Female
• Humans
• Hyperbaric Oxygenation
• Incidence
• Infusions, Parenteral
• Intracranial Embolism (epidemiology, physiopathology, prevention & control, therapy)
• Lidocaine (administration & dosage)
• Male
• Middle Aged
• Neuroprotective Agents (administration & dosage)
• Risk Assessment
• Risk Factors
• Treatment Outcome