dornase alfa

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dornase alfa

 [dor´nāz al´fah]
recombinant human deoxyribonuclease I (DNase I) used to reduce the viscosity of sputum in cystic fibrosis patients; administered by inhalation.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

dornase alfa


Pharmacologic class: Recombinant human deoxyribonuclease I

Therapeutic class: Cystic fibrosis agent, mucolytic enzyme, respiratory inhalant

Pregnancy risk category B


Selectively cleaves to DNA in sputum, decreasing viscosity of pulmonary secretions


Inhalation solution: 2.5-mg ampule (1 mg/ml)

Indications and dosages

To reduce respiratory tract infections and improve pulmonary function in patients with cystic fibrosis

Adults and children: One ampule (2.5 mg) inhaled once daily; some patients may benefit from twice-daily dosing. Safety and efficacy of daily administration haven't been demonstrated for longer than 12 months.


• Hypersensitivity to drug, its components, or products derived from Chinese hamster ovary cells


Use cautiously in:

• pregnant or breastfeeding patients.


• Don't shake, dilute, or mix with other drugs.

• Use only with approved nebulizer.

• Discard cloudy or discolored solution.

Adverse reactions

CV: chest pain

EENT: conjunctivitis, rhinitis, pharyngitis, hemoptysis, voice changes

Respiratory: dyspnea, increased sputum, wheezing

Skin: rash, urticaria, pruritus

Other: hypersensitivity reactions


None known

Patient monitoring

• Assess patient periodically. Report improvement in dyspnea and sputum clearance.

• Monitor for signs and symptoms of hypersensitivity reaction.

Patient teaching

• Teach patient how to use nebulizer.

• Instruct patient to report rash, hives, and itching.

• As appropriate, review all other significant adverse reactions mentioned above.

McGraw-Hill Nurse's Drug Handbook, 7th Ed. Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved

dornase alfa

(dôr′nās′ ăl′fə, -nāz′)
A genetically engineered enzyme used to hydrolyze the DNA in bronchial mucus, facilitating its expectoration, in the treatment of cystic fibrosis.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

dornase alfa

A drug used to remove sticky and tenacious secretions from the air passages of people suffering from CYSTIC FIBROSIS. A brand name is Pulmozyme.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005