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Scleroderma - Treatment for Lung Complications

Description

An in-depth report on the causes, diagnosis, treatment, and prevention of scleroderma.

Alternative Names

Systemic sclerosis

Treatment for Lung Complications:

Pulmonary Fibrosis

Cyclophosphamide. Cyclophosphamide (Cytoxan), an immunosuppressive drug, may be effective for preventing lung deterioration and is the important medication for treating pulmonary fibrosis, particularly when given early in the course of the disease.

Use of this drug may improve survival in patients who show early signs of lung deterioration, notably inflammation in the small lung airways (alveolitis). The drug is not recommended for patents with existing stable pulmonary fibrosis and no signs of inflammation.

Other Treatments. Lung transplantation may offer hope for people with advanced pulmonary hypertension or interstitial fibrosis that does not respond to conservative treatments.

Pulmonary Hypertension

Several types of drugs are used to treat pulmonary hypertension. Anticoagulants taken by mouth, such as warfarin (Coumadin), are a standard treatment used to prevent blood clots from forming. Diuretic treatment and supplemental oxygen are recommended for patients with fluid retention and low blood oxygen, respectively.

Vasodilators help open blood vessels and relieve pressure in arteries of the lungs. Vasodilators used to treat pulmonary hypertension fall into several different drug classes:

Calcium Channel Blockers (CCBs). Some patients with pulmonary hypertension benefit from these drugs. They help relax blood vessels in the heart and lungs, and increase the supply of oxygen. However, calcium channel blockers are only appropriate for patients who meet certain diagnostic criteria, including those who don't have right-sided heart failure. Long-acting nifedipine, diltiazem, or amlodipine are the preferred calcium channel blockers.

Prostacyclins (Prostaglandins). Prostacyclins, which open blood vessels, are now the primary agents for treating pulmonary hypertension.

Iloprost (Ventavis) is available in inhaled and intravenous forms. Studies suggest that the inhaled form improves exercise capacity and survival in some patients with pulmonary hypertension. In addition, infusions of iloprost remain effective over long periods (up to 3 years) of use.
Treprostinil (Remodulin) is similar to epoprostenol but is more stable. It can also be administered using a portable pump that delivers the drug under the skin. This is less expensive, cumbersome, and invasive than the delivery methods for epoprostenol.
Epoprostenol (Flolan), which is administered intravenously, has improved exercise capacity and symptoms in both the short and long term in a number of patients. In some patients, survival is increased significantly. However, not all patients respond to this drug. The implanted catheter needed to deliver the drug can also cause serious complications.

Endothelin Receptor Antagonists. Bosentan (Tracleer) was the first drug taken by mouth that was approved for pulmonary hypertension. Bosentan controls endothelin, a powerful substance that causes blood vessels to narrow. Studies have reported improved exercise capacity in patients with pulmonary hypertension. Sitaxsentan and ambrisentan (Letairis) are two new drugs being studied.

PDE5 Inhibitors. Sildenafil (Revatio) was approved in 2005 as the first pill for patients with early-stage pulmonary hypertension. Sildenafil is the same medication contained in the erectile dysfunction drug Viagra. However, Revatio is prescribed at a lower dosage than Viagra, and is a different color and shape than Viagra pills.

Other Treatments. Lung transplantation may offer hope for people with advanced pulmonary hypertension that does not respond to conservative measures.

Resources

www.scleroderma.org -- Scleroderma Foundation
www.srfcure.org -- Scleroderma Research Foundation
www.arthritis.org -- The Arthritis Foundation
www.niams.nih.gov -- National Institute of Arthritis and Musculoskeletal and Skin Diseases
www.rheumatology.org -- American College of Rheumatology
www.sclero.org -- International Scleroderma Network
www.sctc-online.org -- Scleroderma Clinical Trials Consortium
www.phassociation.org -- Pulmonary Hypertension Association
www.thoracic.org -- American Thoracic Society

References

Badesch DB, Abman SH, Simonneau G, Rubin LJ, McLaughlin VV. Medical therapy for pulmonary arterial hypertension: updated ACCP evidence-based clinical practice guidelines. Chest. 2007;131:1917-1928.

Feldman M, Friedman LS, Brandt LJ. Sleisenger and Fordtran's Gastrointestinal and Liver Disease. 8th ed. Philadelphia, Pa: Saunders; 2006.

Henness S, Wigley FM. Current drug therapy for scleroderma and secondary Raynaud's phenomenon: evidence-based review. Curr Opin Rheumatol. 2007;19:611-618.

Knobler RM, French LE, Kim Y, Bisaccia E, Graninger W, Nahavandi H, et al. A randomized, double-blind, placebo-controlled trial of photopheresis in systemic sclerosis. J Am Acad Dermatol. 2006;54:793-799.

Kreuter A, Hyun J, Stücker M, Sommer A, Altmeyer P, Gambichler T. A randomized controlled study of low-dose UVA1, medium-dose UVA1, and narrowband UVB phototherapy in the treatment of localized scleroderma. J Am Acad Dermatol. 2006;54:440-447.

Nash RA, McSweeney PA, Crofford LJ, et al. High-dose immunosuppressive therapy and autologous hematopoietic cell transplantation for severe systemic sclerosis: long-term follow-up of the US multicenter pilot study. Blood. 2007;110:1388-1396.

Nihtyanova SI, Denton CP. Current Approaches to the Management of Early Active Diffuse Scleroderma Skin Disease.Rheumatic Dis Clin North Am. 2008;34(1):34(1):161-79; viii

Ostojic P, Cerinic MM, Silver R, Highland K, Damjanov N. Interstitial lung disease in systemic sclerosis. Lung. 2007;185:211-220.

Rubin LJ. Treatment of Pulmonary Arterial Hypertension Due to Scleroderma: Challenges for the Future.Rheumatic Dis Clin North Am. 2008;34(1):191-197; viii.

Schachna L, Medsger TA Jr., Dauber JH, Wigley FM, Braunstein NA, White B, et al. Lung transplantation in scleroderma compared with idiopathic pulmonary fibrosis and idiopathic pulmonary arterial hypertension. Arthritis Rheum. 2006;54:3954-3961.

Shoenfeld Y, Katz U. IVIg therapy in autoimmunity and related disorders: our experience with a large cohort of patients. Autoimmunity. 2005 Mar;38(2):123-37.

Steen VD. Pregnancy in scleroderma. Rheum Dis Clin North Am. 2007;33:345-358.

Tashkin DP, Elashoff R, Clements PJ, et al. Cyclophosphamide versus placebo in scleroderma lung disease. N Engl J Med. 2006; 354(25):2655-66.

Thombs BD, Taillefer SS, Hudson M, Baron M. Depression in patients with systemic sclerosis: a systematic review of the evidence. Arthritis Rheum. 2007;57:1089-1097.

Tyndall A, Furst DE. Adult stem cell treatment of scleroderma. Curr Opin Rheumatol. 2007;19:604-610.

Wigley FM. Scleroderma (Systemic Sclerosis). In: Goldman L, Ausiello D. Goldman: Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders, 2008. pp. 2032-2041.

Reviewed last on: 3/17/2009
Harvey Simon, MD, Editor-in-Chief, Associate Professor of Medicine, Harvard Medical School; Physician, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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