PROPEL Sinus Stent Safety Information

PROPEL sinus stents are small, dissolvable and bio-compatible devices that are coated with an anti-inflammatory drug, mometasone furoate.  They are used by ENT (otolaryngology) surgeons to prop open the sinuses after sinus surgery and to locally deliver the corticosteroid mometasone furoate (MF).  PROPEL sinus stents are designed to dissolve over 30-45 days after being placed in a patient’s sinus after sinus surgery. 

Propping open the sinus after sinus surgery is important because scarring and inflammation that are part of the normal healing process after sinus surgery can result in narrowing of the sinuses, which can cause problems after sinus surgery.  The local, targeted delivery of MF to the sinuses after surgery helps this process.

PROPEL sinus stents should not be used in patients with a suspected or confirmed sensitivity (allergic response, or other sensitivity) to:

  • mometasone furoate;
  • lactide, glycolide, or caprolactone copolymers

If a patient doesn’t know whether they have a suspected or confirmed intolerance to these substances, they should talk to their doctor.

PROPEL sinus stents have only been approved by the FDA for use in patients 18 years and older.  PROPEL sinus stents have not been studied in patients who are less than 18 years old.

The safety of PROPEL sinus stents have not been studied in pregnant or nursing females.  Pregnant and nursing patients should discuss the possible risks and benefits with their doctors before deciding whether to have PROPEL sinus stents.

In addition to the possible side effects from MF, since the PROPEL sinus stent is left in a patient’s body, as with any medical product that is left in the patient’s body, it can possibly cause a:

  • Foreign body reaction (the body’s normal response to a foreign object, which, depending on the patient’s immune response, can be more aggressive and be harmful).
  • Toxic shock syndrome (TSS)—this is a very rare, but life-threatening reaction that is also a risk of any surgical procedure.

While not observed in any of the clinical trials on PROPEL sinus stent, it is possible that a patient could experience:

  • Aspiration of small implants—small pieces of the device going into the patient’s lungs.  While this is possible, it was not observed to occur in any of the clinical trials on PROPEL sinus stents.
  • Glaucoma/elevation of the intraocular pressure—since the PROPEL sinus stent is coated with mometasone furoate, a corticosteroid, it is possible that there could be an increase in the pressure of the naturally-occurring fluid in the patient’s eye. 
  • Cataracts/change in lens opacities—since PROPEL sinus stent is coated with mometasone furoate, a corticosteroid, it is possible that it could make a patient more likely to have cataracts. 
  • Premature displacement of the stent—the device may come out sooner than it was designed to.
  • Swallowing of the implant or implant fragments—if the stent becomes displaced, since a patient’s airway passage is connected to their throat, the stent may go down the patient’s throat.  Since the stent is small and dissolvable, this should not cause anything more serious than discomfort.  However, if it becomes stuck, the patient has difficulty breathing, or has any other concerns or symptoms if this happens, the patient should contact his or her doctor or seek immediate medical attention.
  • Pain/pressure/headache from the “crust,” a normal part of the healing process, sticking to the stent.
  • Nasal irritation—a patient’s sinus passages and nose may be irritated from PROPEL sinus stent and/or from the sinus surgery.
  • Hypersensitivity reaction—a patient could be sensitive or allergic to PROPEL sinus stents or any of its components and not know that they are before it is placed.  While it is not common, if it does occur, the device can typically be easily removed and the reaction easily treated by the patient’s doctor.
  • Nose bleed—typically very minor and not needing medical attention.  However, if a patient does have a significant nose bleed from the PROPEL sinus stents or from his or her sinus surgery (or any other cause), the patient should contact a doctor.
  • Infection—it is possible that a patient could have an infection (viral, fungal, or bacterial) after sinus surgery or PROPEL sinus stent placement.  They should contact a doctor if they suspect they have an infection.
  • Nasal dryness or burning.
  • Sinusitis—inflammation or infection of the sinuses
  • Headache
  • Nose bleeds
  • Infection of other parts of the respiratory tract
  • Lightheadedness
  • Ear infection
  • Swelling of the eyelid
  • Nausea
  • Nasal polyps—benign growths inside the nose
  • Asthma attacks in patients who have had or have asthma

Although many patients benefit from PROPEL sinus stents, results vary. Please talk to your doctor to see if PROPEL sinus stents are right for you. Your doctor can discuss the benefits and risks with you. Each patient experience is unique and Intersect ENT does not provide any guarantee regarding the response to PROPEL sinus stents.

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Safety Information

The purpose of the site is to help create awareness about sinusitis and treatment options for the disease. Please note that information contained on this site is not medical advice. It should not be used as a substitute for speaking with your physician. Always talk with your physician about diagnosis and treatment information.

The PROPEL sinus implants are intended for use after sinus surgery to maintain patency and to locally deliver steroids to the sinus mucosa: PROPEL for use in the ethmoid sinus, PROPEL Mini for use in the ethmoid sinus and frontal sinus opening, and PROPEL Contour for use in the frontal and maxillary sinus ostia. The implants are intended for use in patients ≥18 years of age. Contraindications include patients with intolerance to mometasone furoate (MF) or a hypersensitivity to bioabsorbable polymers. Safety and effectiveness of the implants in pregnant or nursing females have not been studied. Risks may include, but are not limited to, pain/pressure, displacement of implant, possible side effects of intranasal MF, sinusitis, epistaxis, and infection. For complete prescribing information see IFU at www.IntersectENT.com. Rx only.

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