Benefits of the Use of Botox in the Treatment of Empty Nose Syndrome Syndrome

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00732680
Recruitment Status : Terminated (Lead investigator moved to a new medical center; study was stopped when he left.)
First Posted : August 12, 2008
Results First Posted : February 13, 2014
Last Update Posted : April 18, 2016
Information provided by (Responsible Party):
Mayo Clinic

August 8, 2008
August 12, 2008
November 13, 2013
February 13, 2014
April 18, 2016
December 2008
November 2009   (Final data collection date for primary outcome measure)
Mean Score of Sino Nasal Outcome Test 22 (SNOT 22) [ Time Frame: 2 weeks after intervention, 2 months ]
The SNOT 22 is a validated measure of health related quality of life in sinonasal disease. It is a 22 item questionnaire with each item assigned a score ranging from 0-5. The total score may range from 0-110 and lower scores represent better health related quality of life.
The endpoints will include the patient questionnaire scores 2 months post-intervention (Snot 22 score, BDI-2 score) and rhinomanometry measurements. [ Time Frame: 4 months ]
Complete list of historical versions of study NCT00732680 on Archive Site
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Benefits of the Use of Botox in the Treatment of Empty Nose Syndrome Syndrome
Prospective Case Series Evaluating Short and Long Term Benefits of the Use of Botox in the Treatment of Empty Nose Syndrome

Empty Nose Syndrome patients suffer from disabling physical symptoms and considerable distress. To date there is no definitive cure for these symptoms. Established treatment modalities include saline irrigation, surgical implantation of materials or simply use of cotton wads/ silicon cones to simulate the resistive action to airflow of the resected turbinates.

This study will research the effectiveness of a new treatment modality in the treatment of Empty Nose Syndrome. This novel treatment method involves the use of botulinum toxin type A (Botox).


Empty Nose Syndrome (ENS) is the term used to describe the condition resulting from over resection of nasal turbinate. Symptoms include depression, dysosmia, bleeding, discharge, crusting, dryness, dysosmia, and pain.

Treatment modalities include adjunctive comfort measures (primarily irrigation), mechanical measures (Silicon cones, cotton wads) and surgical treatment (alloderm implants, plastipore cartilage grafts etc.) We will investigate a new method of treatment for ENS. This will involve injection of botulinum toxin type A into the dilator nasalis muscle thus collapsing the internal nasal valve to provide added resistance to air flow.


To evaluate effectiveness of botulinum toxin type A in improving overall quality of life in ENS patients.


ENS patients in this study will receive botulinum toxin type A along with adjunctive treatment which will include several measures. First of all, patients will be given a nasal rinse bottle and will be instructed to irrigate their noses twice a day as follows:

  • Irrigate the nose 250cc (about 125cc each side) to clear the mucus.
  • Stop and gently clear the nose.
  • Irrigate the nose 250cc (about 125cc each side) once again.
  • Sit quietly for 10 minutes. No blowing.
  • Do not blow the nose for 2 hours.

Patients will be asked to use sesame oil once a day to prevent drying of the nasal mucosa with further administration as needed. In addition they will advised to make certain lifestyle modifications that will include sleeping with a cool mist humidifier, drinking plenty of fluids and engaging in regular physical activity.

Before and after treatment data will be obtained in the form of a breathing test and patient questionnaires that will measure changes in physical and mental health.

Phase 1
Phase 2
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
  • Empty Nose Syndrome
  • Atrophic Rhinitis
Drug: Botulinum Toxin Type A
10 Units of Botulinum Toxin Type A injected into the dilator nasalis muscle on each side of the nose.
Other Name: Botox
Experimental: Botulinum Toxin Type A
Treatment will be in the form of 10 Units of Botulinum Toxin Type A injected into the dilator nasalis muscle on each side of the nose.
Intervention: Drug: Botulinum Toxin Type A
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*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
November 2009
November 2009   (Final data collection date for primary outcome measure)

Inclusion Criteria:

  • Any patient aged 18-65 years of age presenting with a known diagnosis of ENS who has no known allergies to Botox.

Exclusion Criteria:

  • Patients younger than 18 years or older than 65 years of age.
  • Patients with neuromuscular disorders or neuropathic diseases.
  • Patients with infection and or swelling at the site where Botox is to be injected.
  • Patients with known hypersensitivity to any ingredient in the drug formulation (botulinum toxin, human albumin)
  • Patients who are or plan to become pregnant within the time period in which the study will be conducted.
  • Patients who are nursing
Sexes Eligible for Study: All
18 Years to 65 Years   (Adult, Older Adult)
Contact information is only displayed when the study is recruiting subjects
United States
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Mayo Clinic
Mayo Clinic
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Principal Investigator: Oren Friedman, M.D. Mayo Clinic
Mayo Clinic
March 2016

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP