Journals / MN Kardiyoloji / 2004 / Cilt: 11 - Sayı: 4

Effect of metoprolol treatment on myocardial velocities in patients with heart failure in sinus rhythm

Metoprolol tedavisinin kalp yetersizliği bulunan sinüs ritimli hastalarda sol ventrikül miyokardiyal hızları üzerine etkisi

Pages
278–283
DOI
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⚡ TL;DR(Too Long; Didn't Read)

Symptomatic improvement by metoprolol treatment can be explained by improvement of diastolic functions.

📌 3 Key Takeaways

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Objective & Hypothesis:Aim: Beneficial effects of beta blockers on cardiac failure has been clearly defined.
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Key Findings & Data:Material and Method: Thirty-two patients with heart failure (mean age: 58$\pm$10) and 20 healthy individuals were included in the study.
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Conclusion & Impact:Symptomatic improvement by metoprolol treatment can be explained by improvement of diastolic functions.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Diyastol · Kalp yetmezliği · konjestif

Abstract

Aim: Beneficial effects of beta blockers on cardiac failure has been clearly defined. This study was planned to observe effect of metoprolol treatment on myocardial velocities in patients with heart failure. Material and Method: Thirty-two patients with heart failure (mean age: 58$\pm$10) and 20 healthy individuals were included in the study. Patients were given metoprolol, starting with 12.5 mg daily dose, and dose is increased weekly up to 50 mg/d given as controlled release tablets. Conventional echocardiography and myocardial tissue Doppler imaging were performed before the treatment and 1 month after. Myocardial velocities were acquired at the level of mitral and tricuspid annulus by tissue Doppler imaging method. Measurements were made at septal, lateral, inferior and anterior sides of (4 and 2 chambers) at mitral annulus. Average of measurements at 4 sides was taken for mitral annular velocities. Lateral side of tricuspid annulus was selected to evaluate longitudinal function of right ventricule. Systolic, early and late diastolic velocities were recorded. Posttreatment outcomes were compared with the pretreatment data. Results: Mitral and tricuspid annular systolic velocities were found to be significantly lower in patients with heart failure (3.8$\pm$1.1versus 9.3$\pm$0.9 cm/s for mitral annulus, p <0.01, 5.1$\pm$2.5 versus 14.6$\pm$1.9 cm/s for tricuspid annulus, P<0.001). Early diastolic velocity was significantly decreased compared to healthy individuals (3.9$\pm$1.1 cm/s versus 11.9$\pm$2.1 cm/s, p<0.001 for mitral annulus, 4.8$\pm$1.2 cm/s versus 12.9$\pm$2.4 cm/s for tricuspid annulus, p<0.01). While no significant change was observed in systolic myocardial velocity after metoprolol treament, early diastolic velocity was significantly increased (3.9$\pm$1.1 cm/s versus 4.6$\pm$1.2 cm/s for mitral annulus, 4.8$\pm$12 cms versus 5.7$\pm$1.4 cm/s, p<0.05, p<0.05 respectively). Conclusion: In the early period after metoprolol treatment, increase of early diastolic velocity was observed without any improvement of systolic myocardial velocities. Symptomatic improvement by metoprolol treatment can be explained by improvement of diastolic functions.

Özet

Amaç: Bu çalışma kalp yetersizliği olan hastalarda metoprolol tedavisinin miyokardiyal hızlar üzerine etkisini gözlemek amacıyla planlandı. Gereç ve Yöntem: Kalp yetersizliği bulunan 32 hasta (yaş ort 58$\pm$10) ve 20 sağlıklı birey çalışmaya dahil edildi. Hastalara 12.5 mg'dan başlayıp, haftalık aralıklarla titre edilerek 50 mg metoprolol, kontrollü salınım tableti verildi. Tedavi öncesi ve 1 ay sonrası konvansiyonel ekokardiyografi ve miyokardiyal doku Doppler görüntüleme uygulandı. Miyokardiyal hızlar doku Doppler görüntüleme tekniği ile mitral ve triküspit halka düzeyinden sağlandı. Mitral halka düzeyinde apikal 4 ve 2 boşlukta septal, lateral, inferior ve anterior kenarlardan ölçüm yapıldı. Mitral halka hızları için 4 kenarın ölçümlerinin ortalamaları alındı. Sağ ventrikül longitidünal fonksiyonunu değerlendirmek için triküspit halkasının lateral kenarı seçildi. Sistolik hız, erken diyastolik hız ve geç diyastolik hızlar kaydedildi. Tedavi sonrası elde edilen sonuçlar tedavi öncesi ile karşılaştırıldı. Bulgular: Kalp yetersizliği bulunan hastalarda kontrole göre mitral ve triküspit halka sistolik hızları anlamlı olarak düşük bulundu (mitral halka için 3.8$\pm$1.1'e karşı 9.3$\pm$0.9 cm/s, p <0.01, triküspit halka için 5.1$\pm$2.5'e karşı 14.6$\pm$1.9 cm/s, P<0.001). Erken diyastolik hız sağlıklı bireylere göre belirgin azalmış idi (mitral halka için 3.9$\pm$1.1 cm/s'e karşın 11.9$\pm$2.1 cm/s, P<0.001, triküspit halka için 4.8$\pm$1.2 cm/s'ye karşı 12.9$\pm$2.4 cm/s, p<0.01). Metoprolol tedavisi sonrası sistolik miyokardiyal hızda anlamlı değişiklik olmazken erken diyastolik hızda ise anlamlı artış izlendi (mitral halka için 3.9$\pm$1.1'e karşı 4.6$\pm$1.2, triküspit halka için 4.8$\pm$1.2 ye karşı 5.7$\pm$1.4, p<0.05, p<0.05 sırasıyla). Sonuç: Metoprolol tedavisi ile erken dönemde sistolik miyokardiyal hızlarda düzelme olmadan erken diyastolik hızlarda artış izlenmiştir

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Cite This Article

AYDIN, M., ÖZEREN, A., BİLGE, M., DURSUN, A., ELBEY, M. A., CAM, F. (2004). Effect of metoprolol treatment on myocardial velocities in patients with heart failure in sinus rhythm. MN Kardiyoloji, Cilt: 11 - Sayı: 4, 278–283. https://ajindex.com/articles/297661

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