Food Bolus Obstruction
Red Flags
- Patients with severe neck or chest pain and tachycardia, tachypnoea, or surgical emphysema, indicating an actual or impending oesophageal perforation (regardless of whether a soft or hard foreign body is suspected).
- Patients with multiple previous episodes of dysphagia / food bolus obstruction.
Why Is This Important?
- This is a common emergency presentation to ENT and gastroenterology. The patient is usually in considerable discomfort and may need to go to theatre if this does not improve.
- Many cases are uncomplicated and boluses will pass with time alone. Rarely, however, food bolus obstruction may lead to oesophageal perforation and mediastinitis, either due to an unexpected sharp element or if it has been lodged for a while.
- Repeated episodes of dysphagia and bolus obstruction can be a presentation of oesophageal stricture (benign or malignant) or eosinophilic oesophagitis.
When to Involve the ENT Registrar
- If the patient has any signs of airway compromise.
- If the patient has severe neck or interscapular pain associated with reduced neck movements, voice change, and signs of sepsis (perforation).
- If you have concerns that there is a sharp or potentially corrosive foreign body in the oesophagus, or there are signs of perforation (see below).
Who to Admit
Most hospitals have local rules about admitting patients with food boluses — check if you aren't sure, as the patient may be looked after by either gastroenterology or by ENT.
Patients who present to hospital have probably already tried water and waited a few hours to see if their food bolus will pass spontaneously. Do not delay accepting these patients on the expectation that medical treatment will work: admit under the appropriate specialty and observe ± intervene. If the food bolus has not passed spontaneously within a few hours, it is likely to need intervention.
In many hospitals, if there is no hard foreign body and just food, gastroenterologists will chase the bolus down into the stomach with a flexible OGD. This is because ENT rigid oesophagoscopes only reach the upper oesophagus and have a slightly higher risk of complications (tooth damage, perforation, etc.).
- All patients complaining of sudden aphagia/severe dysphagia after eating should be assessed.
- Patients should be admitted for observation (A&E observation ward, CDU, MAU, or SAU). Endoscopy may be indicated if symptoms do not resolve after 6-12 hours.
Assessment and Recognition
A food bolus is a semi-solid mass of food (most often meat) not associated with a hard or sharp foreign body. If you suspect that there may be a hard or sharp foreign body, proceed as for an ingested hard foreign body.
- Check first that the airway is not compromised — there is an important clinical distinction between oesophageal obstruction by a food bolus and a hard foreign body sitting in the pharynx or larynx, threatening the airway. If the patient is not short of breath and can speak normally, you can be reasonably reassured that the airway is not immediately compromised.
- Patients will typically attend shortly after a meal with discomfort in the throat or chest, and complete inability to swallow saliva or fluids. Overenthusiastic consumption of meat is a common culprit; the condition is sometimes known as "steak-house syndrome".
- The food bolus may impact at any level. If the obstruction is in the upper oesophagus, the patient may be spitting out their own saliva, and any attempt to drink something causes immediate regurgitation. They may feel neck pain or point to an area higher in the neck.
- Lower oesophageal symptoms include discomfort in the suprasternal notch or retrosternally, and delayed regurgitation.
- Ask the patient what they were eating, and in particular whether it was likely to have contained bones. Bones present a higher risk of complications and need to be removed urgently.
- Take a history of past episodes, as well as any previous swallowing difficulties and weight loss (red flags for oesophageal malignancy).
- It is important to rule out oesophageal perforation or impending perforation. A patient with perforation will have severe chest pain radiating to the back, tachycardia, tachypnoea, and pyrexia. Palpate the upper chest and supraclavicular region for surgical emphysema. Haematemesis is worrying for significant oesophageal trauma.
- Request a lateral soft tissue neck X-ray and/or a lateral chest X-ray to look for signs of a hard foreign body (the history is not always accurate), surgical emphysema, and signs of obstruction.
Immediate and Overnight Management
If there is any difficulty in breathing or change in voice, sit the patient upright, give high-flow oxygen, and get a senior ENT and anaesthetic opinion urgently.
Various medical treatments for food bolus were used historically, such as glucagon and buscopan. However, various placebo-controlled RCTs and systematic reviews have demonstrated no benefit from giving either drug. Glucagon and buscopan should not routinely be used in the treatment of food bolus obstruction.
For stable patients without red flags, arrange admission and give IV fluids and analgesia. Oesophagoscopy (rigid or flexible) is usually performed once it is clear the obstruction will not pass spontaneously. Many patients present some hours after the obstruction occurs. Depending on the time of presentation, make arrangements for in-hours oesophagoscopy as appropriate. Generally, patients would not require oesophagoscopy after midnight unless you had specific concerns.
Alert your senior immediately if the patient is experiencing any worrying symptoms or signs (see Assessment above).
Further Management
If the patient develops increased distress overnight, re-assess them and seek a senior opinion if necessary.
Usually, if the patient is still unable to swallow on further review, they will be booked for oesophagoscopy on that day's emergency list, either by the ENT surgeons or gastroenterologists.
If the patient's symptoms have settled completely, water and a soft diet are commenced, and the patient is discharged later if they are well.
Follow up: Unless malignancy can be ruled out at the primary/emergency oesophagoscopy, patients with even one obstructive episode should be followed up as per local protocol. Patients experiencing recurrent obstructive episodes should be referred to gastroenterology as this may be a presenting symptom of eosinophilic oesophagitis.
References
Page last reviewed: 13 October 2026