Journals / Türk Kardiyoloji Derneği Arşivi / 2005 / Cilt: 33 - Sayı: 5

The effect of exercise on a bicycle ergometer on diastolic filling parameters in patients with diastolic dysfunction

Diyastolik disfonksiyonlu hastalarda bisiklet ergometrisi ile uygulanan egzersizin sol ventrikül diyastolik doluş parametreleri üzerine etkisi

Pages
268–275
Publication Date
2022-11-05
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Conclusion: Despite a relative increase in the E/A ratio, exercise-related dyspnea and fatigue seen in patients with diastolic dysfunction may be associated with an increased preload, decreased deceleration time, and an insufficient increase in active filling velocity (A wave velocity).

📌 3 Key Takeaways

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Objective & Hypothesis:Objectives: During the early stages of diastolic dysfunction, symptoms of heart failure including dyspnea and fatigue become manifest only during exercise.
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Key Findings & Data:The aim of this study was to evaluate the changes in the left ventricular diastolic filling parameters during exercise and their relationship with ensuing symptoms in patients with abnormal relaxation (grade 1 diastolic dysfunction).
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Conclusion & Impact:Conclusion: Despite a relative increase in the E/A ratio, exercise-related dyspnea and fatigue seen in patients with diastolic dysfunction may be associated with an increased preload, decreased deceleration time, and an insufficient increase in active filling velocity (A wave velocity).
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objectives: During the early stages of diastolic dysfunction, symptoms of heart failure including dyspnea and fatigue become manifest only during exercise. The aim of this study was to evaluate the changes in the left ventricular diastolic filling parameters during exercise and their relationship with ensuing symptoms in patients with abnormal relaxation (grade 1 diastolic dysfunction). Study design: The study included 49 patients (27 females, 22 males; mean age 56±8 years; range 36 to 77 years) with grade 1 diastolic dysfunction, without ischemic heart disease or any other echocardiographic abnormalities, and 16 healthy controls (9 females, 7 males; mean age 54±12 years; range 33 to 61 years). Forty patients (81.6%) had hypertension. Diastolic function parameters during rest and at maximal exercise (performed by bicycle ergometer) were recorded, and response to exercise and relationship with symptoms were assessed. Results: In the patient group, E and A wave amplitudes and the E/A ratio significantly increased at maximal exercise (80%, p=0.0003; 44%, p=0.0004; 25%, p: 0.0004, respectively), with a slight decrease in the deceleration time (p=0.07). A similar increase was observed in E wave velocity (68%) in the control group, but this was not significant when compared with the absolute values of increase in the patient group. However, the increase in A wave velocity (76%) was significant when compared with the absolute values of increase in the patient group (p=0.011). The E/A ratio did not change significantly in the control group because of similar increases in E and A velocities. Conclusion: Despite a relative increase in the E/A ratio, exercise-related dyspnea and fatigue seen in patients with diastolic dysfunction may be associated with an increased preload, decreased deceleration time, and an insufficient increase in active filling velocity (A wave velocity).

Özet

Amaç: Diyastolik disfonksiyonun erken evrelerinde dispne ve çabuk yorulma şeklindeki kalp yetersizliği semptomları sadece egzersiz sırasında belirgin hale gelmektedir. Bu çalışmada, relaksasyon bozukluğu saptanan (evre 1 diyastolik disfonksiyon) hastalarda egzersiz sırasında sol ventrikül diyastolik doluş parametrelerindeki değişiklikler değerlendirildi ve bunların semptomlarla ilişkisi araştırıldı. Çalışma planı: Çalışmada, iskemik kalp hastalığı dışındaki bir nedenle yapılan ekokardiyografik incelemede evre 1 diyastolik disfonksiyon dışında bir anormallik saptanmayan 49 hasta (27 kadın, 22 erkek; ort. yaş 56±8; dağılım 36-77) ve yaş (ort. 54±12; dağılım 33-61) ve cinsiyet (9 kadın, 7 erkek) açısından benzer özelliklerde 16 sağlıklı kişi incelendi. Kırk hastada (%81.6) hipertansiyon vardı. İki grupta da istirahatte ve bisiklet ergometrisi ile uygulanan maksimal egzersiz sırasında diyastolik fonksiyon parametreleri kaydedilerek egzersize yanıt ve semptomlarla ilişkisi araştırıldı. Bulgular: Hasta grubunda istirahatteki E ve A dalga amplitüdleri ve E/A oranı egzersiz ile anlamlı derecede artış gösterdi (sırasıyla, %80, p=0.0003; %44, p=0.0004; %25, p=0.0004); deselerasyon zamanı ise hafif derecede kısaldı (p=0.07). Kontrol grubu E dalga hızında çalışma grubundakine benzer bir artış (%68) görülmesine rağmen, çalışma grubundaki egzersizle değişimin mutlak değerleri ile karşılaştırıldığında anlamlı değildi; A dalga hızındaki artış (%76) ise çalışma grubundaki egzersizle değişimin mutlak değerleri ile karşılaştırıldığında anlamlı bulundu (p=0.011). E ve A hızlarında benzer artışlar nedeniyle E/A oranı kontrol grubunda anlamlı derecede değişmedi. Sonuç: Diyastolik disfonksiyonlu hastalarda egzersiz ile E/A oranında göreceli bir artış olmasına rağmen, önyük artışı, taşikardi ile azalan deselerasyon zamanı ve aktif doluş hızındaki (A dalga hızı) yetersiz artış dispne ve yorgunluk gelişiminden sorumlu olabilir.

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Cite This Article

SOYLU, Ö., ÇELİK, E. S., ÖKMEN, A. Ş., TEZEL, T., YILDIRIM, A., ÖKMEN, E. (2022). The effect of exercise on a bicycle ergometer on diastolic filling parameters in patients with diastolic dysfunction. Türk Kardiyoloji Derneği Arşivi, Cilt: 33 - Sayı: 5, 268–275. https://ajindex.com/articles/633787

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