Eucapnic Hyperventilation Periprocedural Care

Updated: Dec 16, 2015
  • Author: Rakesh Vadde, MBBS; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Periprocedural Care

Equipment

The images below depict eucapnic hyperventilation equipment.

Equipment for Eucapnic Hyperventilation Test Equipment for Eucapnic Hyperventilation Test
Patient undergoing Eucapnic Hyperventilation proce Patient undergoing Eucapnic Hyperventilation procedure
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Smoking

Smoking can interfere with spirometry and eucapnic hyperventilation results by producing false-positive results. If the patient smokes cigarettes or other tobacco products, they must abstain from it for at least 6 hours prior to examination.

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Eating and drinking

Patients can eat a normal breakfast or lunch before the procedure; however, they should avoid heavy meal or any alcoholic drinks. Patients should avoid spicy foods and caffeine containing drinks (which may cause heartburn, indigestion, or reflux) on the day of the procedure.

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Exercise, cold air

Patient should avoid any strenuous exercise or excess exposure to cold/hot air within 4 hours prior to the test.

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Medications

Certain medications can interfere with the test results. See the table below.

Table. Medications That Must Be Stopped Prior to Eucapnic Hyperventilation. (Open Table in a new window)

Drug Category

Medication

Time prior to test

Inhaled bronchodilators

Albuterol

8 hours

Ipratropium

24 hours

Salmeterol

48 hours

Oral bronchodilators

Long-acting theophylline

48 hours

Inhaled glucocorticoid

 

2-3 weeks

Oral glucocorticoid

 

2-3 weeks

Mast cell stabilizers

Cromolyn sodium

8 hours

Antihistamines

Diphenhydramine

72 hours

Chlorpheniramine

72 hours

Hydroxyzine

72 hours

Cetirizine

72 hours

Leukotriene modifiers

Montelukast

24 hours

Zafirlukast

24 hours

Patients are not routinely recommended to withhold inhaled and oral steroid for the test, however its anti-inflammatory effect can affect the bronchial response to the trigger. [11]

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Elements of Informed Consent

Patients should be educated about the various steps of the procedure. Patient should be aware of the possible complications of test includes asthmalike symptoms, which include chest tightness, cough, and shortness of breath. These complications can be reversed with an inhaled short-acting bronchodilator.

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