Journals / MN Kardiyoloji / 2001 / Cilt: 8 - Sayı: 3

Measurement of right and left ventricular myocardial performance indexes, and transmitral flow propagation velocity in healthy children

Sağlıklı çocuklarda sağ ve sol ventrikül miyokard performans indeksleri ile transmitral akım ilerleme hızının ölçümü

Pages
198–202
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The mean transmitral FPV is 46 cm/s; it decreases in children at or under the age of four, and increases in children above the age of four.

📌 3 Key Takeaways

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Objective & Hypothesis:AIM: To determine and compare the normal values of myocardial performance index (MPI) for both ventricles, find the mean transmitral flow propagation velocity (FPV) and to determine if a change in these parameters occur with an increase in age.
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Key Findings & Data:METHODS: A total of 72 healthy children, ranging from 1 to 14 years of age, were included in the study.
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Conclusion & Impact:The mean transmitral FPV is 46 cm/s; it decreases in children at or under the age of four, and increases in children above the age of four.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Çocuk · Kan akım hızı · Ventrikül basıncı

Abstract

AIM: To determine and compare the normal values of myocardial performance index (MPI) for both ventricles, find the mean transmitral flow propagation velocity (FPV) and to determine if a change in these parameters occur with an increase in age. METHODS: A total of 72 healthy children, ranging from 1 to 14 years of age, were included in the study. The right and left ventricular inflow and outfllow velocities were recorded by pulsed Doppler echocardiography. Myocardial performance index was calculated for both ventricles (sum of isovolumetric times/ejection time). Transmitral FPV was measured by colour M-mode Doppler echocardiography. The echocardiographic parameters of children at or under the age of four (Group A, n=30) were compared with those of the children above the age of four (Group B, n=42). RESULTS: Right ventricular isovolumetric contraction time (IVCT), isovolumetric relaxation time (IVRT), ejection time (ET) and MPI were significantly lower than those of the left ventricle (p<0.001). There was no significant difference of MPI between Group A and B. Mean transmitral FPV in Group A was significantly lower than that of Group B (42.8 and 49.7 cm/s respectively, p=0.002). CONCLUSIONS: The mean values of IVCT, IVRT, ET and MPI of right ventricle significantly differ from those of the left ventricle. The mean transmitral FPV is 46 cm/s; it decreases in children at or under the age of four, and increases in children above the age of four.

Özet

AMAÇ: Çocuklarda sağ ve sol ventrikül için miyokard performans indekslerinin (MPİ) normal değerlerini bulmak ve birbirleriyle karşılaştırmak; transmitral flow propagasyon velositesinin (FPV) normal değerini bulmak; bu değerlerin yaşla olan değişimini incelemek. GEREÇ VE YÖNTEM: Yaşları 1 ve 14 yıl arasında değişen toplam 72 sağlıklı çocuk çalışmaya alındı. Pulsed-wave Doppler ekokardiyografi ile sağ ve sol ventriküllerin giriş ve çıkış yollarındaki akımlar kaydedildi. Her iki ventrikül için MPİ hesaplandı (isovolumetrik zamanların toplamı/ventrikül ejeksiyon zamanı). Renkli M- m ode ekokardiyografi ile transmitral FPV ölçüldü. Dört yaş ve altındaki (Grup A, n=30) ile dört yaş üzerindeki (Grup B, n=42) çocukların ekokardiyografik parametreleri birbirleriyle karşılaştırıldı. BULGULAR: Sağ ventrikül izovolumetrik kontraksiyon zamanı (İVKZ), izovolumetrik relaksasyon zamanı(İVRZ), ejeksiyon zamanı (EZ) ve MPİ sol ventrikül değerlerinden anlamlı derecede düşük bulundu (p<0.001). MPİ yönünden A ve B grupları arasında anlamlı bir fark bulunmadı. Ortalama transmitral FPV, A grubunda B grubuna kıyasla anlamlı derecede düşüktü (sırasıyla 42.8 ve 49.7 cm/s, p=0.002). SONUÇLAR: Sağ ve sol ventrikül için ortalama İVKZ, İVRZ, EZ ve MPİ değerleri farklıdır. Sağlıklı çocuklarda ortalama transmitral FPV değeri 46 cm/s olup bu değer dört yaş ve altındaki çocuklarda azalmakta, dört yaş üzerindeki çocuklarda ise artmaktadır.

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Cite This Article

ALPASLAN, M., ONRAT, E., TUNGA, M., ŞEN, T. A., DOĞAN, İ. (2001). Measurement of right and left ventricular myocardial performance indexes, and transmitral flow propagation velocity in healthy children. MN Kardiyoloji, Cilt: 8 - Sayı: 3, 198–202. https://ajindex.com/articles/299221

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