Fatma ÇİFTCİ, Elif ŞEN, Öznur YILDIZ AKKOCA, Sevgi SARYAL

A comparison of cardiopulmonary exercise test and 6 minute walking test in determination of exercise capacity in chronic obstructive pulmonary disease

Giriş: Bu ara ş tırmada kronik obstrüktif akciğer hastalığı (KOAH)olan olgularda 6 dakika yürüme testi (6DYT) ile kardiyopulmoneregzersiz testi (KPET) arasındaki ilişkiyi ve bu iki egzersiz testininsolunum fonksiyonları aras ındaki iliş kiyi ara ştırmak amaçlanm ıştır.Materyal ve Metod: Orta ve a ğır dereceli KOAHı olan 36 (35 erkek, 1 kadın) olguya ayrıntılı solunum fonksiyon testleri 6DYT veKPET yapılm ış tır.Bulgular: Maksimal oksijen tüketimi 6 dakika yürüme mesafesi ile ilişkilidir. Her iki egzersiz testi de solunum fonksiyonları ile ilişkigöstermektedir. Ancak, maksimum egzersiz kapasitesi solunum fonksiyonları ile istatistiksel olarak daha anlamlı ilişki göstermektedir.İki test de statik akciğer hacimleri ile ilişkilidir. İnspiratuar kapasite 6DYT ve KPET parametreleriyle ilişkilidir. KPET difüzyon kapasitesi ve maksimal inspiratuar basınç ile iliş kili saptan ırken, 6DYT ile ilişki görülmemiş tir. Hava yolu iletimi ve direnci testleri ile egzersiztestleri arasında iliş ki saptanmam ış tır.Sonuç: Basit bir test olan 6DYT KOAHda egzersiz kapasitesini belirlemede kullan ılabilir. Her iki test de ventilatuar bozuklu ğu gösteren özellikle FEV1 , maksimum volenter ventilasyon (MVV) ve inspiratuar kapasite ile belirlenen solunum fonksiyon testleri ile ilişkilidir.Ancak, CPET hiperinflasyonu ve solunum kas gücünü daha iyi de ğerlendiren ve 6DYTden daha ayrıntılı sonuçlar veren bir egzersiztestidir.

KOAH'ta egzersiz kapasitesinin belirlenmesindekardiyopulmoner egzersiz testiyle 6 dakika yürüme testinin karşılaştırılması

Introduction: This study aimed to determine the relationship of 6 minute walking test (6MWT) and cardiopulmonary exercise test(CPET) with each other and with the measures of lung functions in patients with chronic obstructive pulmonary disease (COPD).Materials and Methods: Pulmonary function tests, 6MWT, and CPET were performed in 36 (35 males, 1 female) patients with mod-erate and severe COPD.Results: Maximum oxygen uptake was significantly correlated with 6 minute walking distance. Both exercise tests were correlatedwith pulmonary function tests. However, maximum exercise capacity was more closely correlated with measures of lung functionthan 6MWT. Both tests were significantly correlated with static lung volumes. Inspiratory capacity (IC) was significantly correlatedwith 6MWT and CPET parameters. CPET was significantly correlated with diffusion capacity and maximal inspiratory pressure. Airwayconductance and resistance tests showed no correlation with the exercise tests.Conclusion: 6MWT is a simple and valuable test to determine the exercise capacity of COPD patients. Both 6MWT and CPET arecorrelated with ventilatory impairment determined by the lung function tests, particularly FEV1 , maximum voluntary ventilation(MVV), and IC. However, CPET is an exercise test that more accurately evaluates and provides more detailed information abouthyperinflation and respiratory musce strength than 6MWT does.

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