Wednesday, November 21, 2007

Foreign Bodies

A common problem in primary care offices relates to visits where a foreign body is unable to be removed by the patient or family.

Most patients with ear, nose, and throat foreign bodies are children; intellectually challenged or mentally ill adults.

Many family physicians are able to remove the foreign body in the office but it depends on several factors, including location of the foreign body, type of material, whether the material is graspable (i.e., soft and irregular) or nongraspable (i.e., hard and spherical), physician dexterity, and patient cooperation.

Some children are very compliant with the attempt while others are not and occasionally have to be sedated or restrained.

Recent information on these include:

Foreign bodies in the ear:

o 75% occur in children younger than 8 years.
o These objects are usually asymptomatic and are often an incidental finding in children.
o The most common foreign bodies are beads, plastic toys, pebbles, and popcorn kernels; insects are more common in children older than 10 years.
o In 30% of children younger than 7 years, the object requires removal with the child under general anesthesia.
o Graspable foreign bodies (foam rubber, paper) have higher rates of success for removal under direct visualization.
o Options for removal include water irrigation, forceps, cerumen loops, right-angle ball hooks, and suction catheters.
o Live insects can be rapidly killed before removal by instilling alcohol, 2% lidocaine, or mineral oil into the ear canal, but this should not be done if the tympanic membrane is perforated.
o Irrigation should be avoided in patients with button batteries because of the risk for liquefaction tissue necrosis.
o Acetone may be used to dissolve Styrofoam foreign bodies or to loosen cyanoacrylate (eg, Super Glue adhesive).
o After the first failed attempt at removal, complications increase and success rate falls.
o ENT referral should be made for patients requiring general anesthesia.
o After removal of a foreign body, all orifices should be examined for other objects.
o Ear antibiotic drops are required for concurrent infections of the canal or when trauma is present.

Foreign bodies in the nose:

o Nasal foreign bodies tend to be located on the floor of the nasal passage, and most can easily be removed in the office or emergency department.
o Patients often present with foul-smelling unilateral nasal discharge.
o Before removal, 0.5% phenylephrine should be used to reduce edema, and topical lidocaine should be used to provide analgesia.
o Techniques include forceps, curved hooks, cerumen loops, or suction catheters.
o In addition, a thin, lubricated, balloon-tip catheter (5- or 6-French Foley) can be passed past the foreign body, the balloon inflated, and removal completed by pulling the inflated catheter balloon forward.
o Button batteries must be removed from the nose immediately because of the danger of liquefaction necrosis of the surrounding tissue.
o Sedation is discouraged for removal because of the risk for increased complications from reducing the gag and cough reflex.
o Patients may be able to expel the foreign body by blowing their nose while blocking the other nostril.
o If this fails in a young child, positive pressure ventilation can be delivered through the child's mouth, with the rare potential complication of barotraumas to the ear.
o Appropriate infection control should be exercised as the foreign body will be expelled through the cheek.

Foreign bodies in the throat:

o All pharyngeal foreign bodies are medical emergencies that require airway protection.
o Common obstructing objects in children include balloons, soft plastic, and food particles or boluses.
o Patients with nonobstructing or partially obstructing foreign bodies present with choking, dysphagia, odynophagia, or dysphonia, whereas those with complete airway obstruction present with immediate respiratory distress, and emergency intervention is essential.
o Other presentations include undiagnosed coughing, stridor, or hoarseness.
o Doctors must have a high index of suspicion in patients with unexplained upper airway symptoms, especially in children with a history of choking.
o Early consultation with an ENT doctor is advisable because foreign bodies are difficult to visualize without endoscopy.
o Sedation is required for endoscopic removal.

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4 Comments:

Blogger Iamhoosier said...

Doc,
I have this foot in my mouth....

Happpy Thanksgiving.

Mark

11/21/2007 09:11:00 AM  
Anonymous Anonymous said...

IAM,

I have the same problem as you well know.

Have a great holiday.

11/21/2007 09:45:00 AM  
Blogger John Manzo said...

I can agree with that. My size 10 shoe and my mouth seem to encounter each other with alarming regularity.

Happy Thanksgiving!

11/21/2007 12:46:00 PM  
Blogger Jeff Gillenwater said...

Your own foot in your own mouth is still better than someone else's foot in alternative areas.

I'm thankful for that.

11/21/2007 04:24:00 PM  

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