Effects of chronic smoking on ECG parameters

Öz

Objectives: We aimed to investigate the effect of chronic smoking on ventricular repolarization and ECG parameters by using Tp-e/QT, Tp-e/QTc, and Tp-e intervals. Methods: This cross-sectional descriptive study was conducted on hospital registrations. A total of 120 patients, 60 of whom were chronic smokers and 60 were never smoked, were included in the study. ECGs were taken with a recording speed of 25 mm/sec. The Tp-e is the time from the peak of the T wave to the end of the T wave. The time from the beginning of the Q wave to the end of the T wave is the QT interval. ECG measurements were made manually by two researchers using a magnifying glass to reduce measurement errors. Measurements were made using the DII lead. Results: Tp-e/QT, Tp-e/QTc, and Tp-e were found to be higher in smokers than in non-smokers. There wasn’t difference between heart rate, PR interval, QRS, QT, QTc, RV5, SV1 and RV5+SV1 values. The package/year value was found to be a factor affecting all three of the Tp-e interval, Tp-e/QT and Tp-e/QTc values. Conclusion: Tp-e/QT, Tp-e/QTc values, and Tp-e interval were found to be higher in smokers than in non-smokers. The number of cigarettes smoked (pack/year) has been shown to be a significant factor that increases these values.

Anahtar Kelimeler

• smoking
• nicotine
• Tp-e/QT ratio
• Tp-e/QTc ratio
• Tp-e interval
• ventricular arrhythmogenesis

Kronik sigara içiciliğinin EKG parametrelerine etkileri

Öz

Amaç: Mevcut çalışmada Tp-e/QT, Tp-e/QTc oranları ve Tp-e aralığı, kullanılarak kronik sigara içiciliğinin ventriküler repolarizasyon ve EKG parametreleri üzerine kronik etkisini araştırmayı amaçladık. Yöntem: Kesitsel tanımlayıcı desendeki çalışma hastane kayıtları üzerinden yürütülmüştür. Kronik sigara içen ve hiç sigara içmemiş 60’ar toplam 120 hasta çalışmaya alınmıştır. EKG’ler 25mm/sn kayıt hızı ile çekilmiştir. Tp-e aralığı, T dalgasının tepesinden sonuna kadarki süre, QT aralığı ise Q dalga başlangıcından T dalga sonuna kadar geçen süredir. EKG ölçümleri, ölçüm hatalarını azaltmak için iki araştırmacı tarafından büyüteç kullanılarak manuel olarak yapılmıştır. Ölçümlerde DII derivasyonu kullanılmıştır. Bulgular: Sigara içenlerde Tp-e/QT, Tp-e/QTc değerleri ve Tp-e aralığı daha yüksektir. Nabız, PR aralığı, QRS, QT, QTc, RV5, SV1 ve RV5+SV1 değerleri arasında anlamlı fark yoktur. Paket/yıl değeri, Tp-e aralığı, Tp-e/QT ve Tp-e/QTc değerlerinin her üçünü de etkileyen bir faktör olarak bulunmuştur. Sonuç: Sigara içenlerde Tp-e aralığı, Tp-e/QT ve Tp-e/QTc değerleri daha yüksektir. Ayrıca içilen sigara miktarı (paket/yıl) bu değerlerin artmasını sağlayan anlamlı bir faktör olduğu gösterilmiştir.

Anahtar Kelimeler

• sigara
• nikotin
• Tp-e/QT oranı
• Tp-e/QTc oranı
• Tp-e aralığı
• ventriküler aritmojenez

Kaynakça

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