Comparison of St-Segment Duration and Morphology between Clinically Healthy and Diarrheic Holstein Dairy Calves

Year 2014, Volume: 40 Issue: 2, 162 - 167, 22.07.2014

Aliasghar Chalmeh Mehrdad Pourjafar Mojtaba Naghıb

Abstract

ABSTRACT

Several diarrheic (n=52) and clinically healthy (n=21) calves were randomly selected and assigned into 3 age groups, comprising newborn calves (18 to 72 hours; n=31), 15 (n=30) and 30 days old (n=12). Electrocardiograms were recorded on a bipolar base apex lead, using limb lead I and duration, amplitude and morphology of the ST-segment were assessed from successive beats. Serum concentration of sodium, potassium, magnesium and ionized calcium were also determined in all studied animals. ST-segment duration had not significant differences among any groups. Elevation of ST-segment was detected in 75% of healthy newborn calves (amplitude was 0.10±0.03 mV in elevated ST-segments). The ST-segment was elevated in a percent of diarrheic calves; there was elevation in 78.9% (0.14±0.04 mV), 34.6% (0.11±0.04 mV) and 57.1% (0.11±0.04 mV) in newborn, 15 and 30 days old diarrheic calves, respectively. Serum potassium, calcium and magnesium concentrations in all studied diarrheic calves were higher than healthy calves, significantly. It may be stated the electrolyte imbalances in diarrheic calves can induce alterations in ST-segment morphology and the results of the current study may interpret the alterations of ST-segment morphology in diarrheic calves.

Key Words: ST-segment, diarrhea, electrolyte imbalance, calves.

                                                     ÖZET

KLİNİK AÇIDAN SAĞLIKLI VE İSHALLİ SİYAH ALACA IRKI BUZAĞILARDA  ST SEGMENTİNİN SÜRESİNİN KARŞILAŞTIRILMASI 

Çeşitli ishalli (n=52) ve klinik açıdan sağlıklı buzağılar rastgele seçilmiştir ve yeni doğan (18-72 saatler arasında, n=31), 15 (n=30) ve 30 (n=12) günlük buzağıları içeren 3 farklı grup oluşturulmuştur. Elektrokardiyografiler bipolar taban-apeks derivasyonu kullanılarak kaydedildi, bacak derivasyon I ve zamanı, ST segmentinin morfolojisi ve amplitüde ardaşık atımlardan belirlendi. Çalışmaya katılan bütün hayvanlardaki serum sodyum, potasyum, magnezyum ve iyonize kalsiyum konsantrasyonları belirlendi. Gruplar arasında ST segmenti süresi belirgin değişikliklere sahip değildi. Sağlıklı yenidoğan buzağıların %75’inde ST segmentinin artışı belirlendi (artan ST segmentlerindeki amplitüt 0,10±0,03 mV). İshalli buzağıların bir kısmında da ST segmentinde artış oldu. Yeni doğan, 15 ve 30 günlük buzağıların sırasıyla, %78,9 (0,14±0,04 mV), %34,6 (0,11±0,04 mV) ve %57,1 (0,11±0,04 mV)’de olmuştur. Çalışmadaki bütün ishalli buzağılardaki serum potasyum, kalsiyum ve magnezyum konsantrasyonları sağlıklı olanlara göre önemli derecede yüksektir. İshalli buzağılardaki elektrolit dengesizliği ST segment morfolojisindeki bu değişimlere sebep olduğu ve yapılan bu çalışma ile ishalli buzağılardaki ST segmentinin morfolojisindeki değişimlerin yorumlanabileceği belirtilebilir.

Anahtar Kelimeler: ST segmenti, ishal, elektrolit dengesizliği, buzağı

 

Keywords

ST-segment, diarrhea, electrolyte imbalance, calves.

KLİNİK AÇIDAN SAĞLIKLI VE İSHALLİ SİYAH ALACA IRKI BUZAĞILARDA ST SEGMENTİNİN SÜRESİNİN KARŞILAŞTIRILMASI

Abstract

 

 

 

Keywords

ST segmenti, ishal, elektrolit dengesizliği, buzağı

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