A Pilot Study of Demand Valve Oxygen Inhalation Therapy for Cluster Headache

Study Description

Go to 

Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Brief Summary:

Cluster headache is a disorder marked by frequent attacks of short-lasting, severe, unilateral head pain with associated autonomic symptoms. It is the most severe head pain syndrome known. Currently, the two most common treatments for cluster headaches are inhaled oxygen and injectable sumatriptan. These treatments do not work for all cluster headache patients, and patients who smoke may eventually develop contraindication to triptans. New treatment options are needed.

An alternative method of oxygen delivery (as opposed to continuous flow) uses a demand valve that is controlled by respiration rate, allowing increased oxygen flow in response to increased demand. This system may be more efficacious at stopping a cluster headache attack than the currently prescribed oxygen delivery system.

This study will compare the effectiveness of oxygen delivered via demand valve versus continuous high flow oxygen via non-rebreather face mask in the acute treatment of a cluster headache attack. All patients will treat one cluster headache with each of the 2 treatment methods.

Condition or disease	Intervention/treatment	Phase
Cluster Headache	Drug: Oxygen	Phase 1

Detailed Description:

Cluster headache is a primary headache disorder marked by frequent attacks of short-lasting, severe, unilateral head pain with associated autonomic symptoms. The goal of acute therapy for cluster headache is fast, effective and consistent relief.

In the currently recommended dosing strategy of continuous flow 100% oxygen given via a non-rebreather face mask at 7-15L/min, the time to improvement can sometimes take upwards of 20-30 minutes and is not effective for all cluster headache sufferers.

An alternative method of oxygen delivery (versus continuous flow) uses a demand valve which is controlled by the respiration rate, allowing increased oxygen flow in response to increased demand. This delivery system may be better at stopping a cluster headache attack than the continuous flow model as it can support hyperventilation which can enhance cerebral arterial vasoconstriction via a state of hyperoxia and hypocapnia. Arterial vasoconstriction is one hypothesized method by which oxygen can abort a cluster headache attack.

This proof of concept trial will evaluate if oxygen delivered via demand valve with a specific breathing technique is effective as a cluster headache acute treatment and is more effective than the traditional continuous high flow oxygen treatment with a non-rebreather face mask.

Study Design

Go to 

Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Study Type :	Interventional (Clinical Trial)
Estimated Enrollment :	12 participants
Allocation:	Randomized
Intervention Model:	Crossover Assignment
Masking:	None (Open Label)
Primary Purpose:	Treatment
Official Title:	A Pilot Study of Demand Valve Oxygen Inhalation Therapy for Cluster Headache
Study Start Date :	January 2011
Estimated Primary Completion Date :	October 2012
Estimated Study Completion Date :	November 2012

Arms and Interventions

Go to 

Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Arm	Intervention/treatment
Active Comparator: Continous Flow Oxygen	Drug: Oxygen; 100 percent continuous oxygen given via a non-rebreather facemask at 7 to 15 liters per minute for 20 minutes
Experimental: Oxygen Demand Valve	Drug: Oxygen; A demand valve delivers oxygen to the user as soon as they try to inhale from an attached mask or mouth tube. As the user starts to inhale, the slight drop in pressure within the mouth piece or mask lifts a valve and starts the oxygen flow. If the user inhales more deeply, more oxygen will flow in response to the increased demand, hence the name demand valve. Unlike a constant flow O2 regulator, a demand valve has no flow meter or flow rate controls, but it is capable of delivering O2 from 0 to 160 liters per minute (LPM). When using a demand valve, O2 dosage is controlled by respiration rate

Outcome Measures

Go to 

Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Primary Outcome Measures :

1. Reduction in headache pain [ Time Frame: 30 minutes ]
   Headache response after 30 minutes of oxygen treatment. Headache response is defined as a reduction in headache pain intensity from moderate, severe, or very severe pain to mild or no pain.

Secondary Outcome Measures :

1. Headache relief and pain free [ Time Frame: 5 to 60 minutes ]
   1. Percentage of patients with no pain after 30 minutes of treatment
   2. Headache relief and pain free at other time points (5 to 60 minutes)
   3. Reduction of autonomic symptoms at 30 minutes
   4. Any difference in treatment response between episodic and chronic cluster headache patients (if patient #'s allow)
   5. Rescue medication use
   6. Cluster headache recurrence by 24 hours post oxygen treatments
   7. Patient satisfaction with treatment response compared with prior oxygen treatment if have utilized8.Likelihood of choosing this technique again to treat a cluster headache attack

Eligibility Criteria

Go to 

Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Ages Eligible for Study:	18 Years to 65 Years (Adult)
Sexes Eligible for Study:	All
Accepts Healthy Volunteers:	No

Criteria

Inclusion Criteria:

• Men or women 18 to 65 with history of moderate severe or very severe cluster headaches and currently in a cluster headache period or cycle are included.

Exclusion Criteria:

• Subjects who have a history of chronic obstructive lung disease, those who have major neurologic disorders other than cluster headaches, those with a history of syncope, or lightheadedness with hyperventilation and pregnant women are excluded.

Contacts and Locations

Go to 

Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Contacts

Contact: Todd D Rozen, MD, FAAN	570-808-6026	tdrozen@geisinger.edu

Locations

United States, Pennsylvania
Geisinger Wyoming Valley	Recruiting
Wilkes-Barre, Pennsylvania, United States, 18702
Principal Investigator: Todd D Rozen, MD, FAAN

Sponsors and Collaborators

Geisinger Clinic

Investigators

Principal Investigator:	Todd D. Rozen, MD	Geisinger Clinic

More Information

Go to 

Study Description Study Design Arms and Interventions Outcome Measures Eligibility Criteria Contacts and Locations More Information

Additional Information:

Geisinger Health System 

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

Rozen TD, Fishman RS. Demand valve oxygen: a promising new oxygen delivery system for the acute treatment of cluster headache. Pain Med. 2013 Apr;14(4):455-9. doi: 10.1111/pme.12055. Epub 2013 Jan 31.

Responsible Party:	Geisinger Clinic
ClinicalTrials.gov Identifier:	NCT01298921 History of Changes
Other Study ID Numbers:	2010-0205
First Posted:	February 18, 2011
Last Update Posted:	March 16, 2012
Last Verified:	March 2012

Keywords provided by Geisinger Clinic:

Headache; Cluster Headache; Oxygen Therapy

Additional relevant MeSH terms:

Headache; Cluster Headache; Pain; Neurologic Manifestations; Nervous System Diseases; Signs and Symptoms	Trigeminal Autonomic Cephalalgias; Headache Disorders, Primary; Headache Disorders; Brain Diseases; Central Nervous System Diseases