Correlation between Age and Electrical Axes of the Heart in Adult Nigerians

• 作者: Bibiana Oti Peter Ekpunobi Chime Wilfred Okwudili Okenwa
• 来源期刊: 心血管病(英文)
• 学科: 医学
• 关键词: P Frontal Axis T Frontal Axis QRS Frontal axis Frontal QRS-T Angle
• 年，卷（期）: 2020,（11）
• 页码范围: 761-768
• 页数: 8页
• 分类号: R54

摘要

<strong>Background:</strong><b><span style="font-family:;" "=""> </span></b><span style="font-family:;" "="">P wave axis, QRS axis, T wave axis and QRS-T angle have prognostic</span><span style="font-family:;" "=""> values on cardiovascular morbidity and mortality, yet the effect of age on these important electrocardiographic parameters has not been well studied in adult Nigerians, knowing that some electrocardiographic parameters are affected by age. <b>Objectives:</b></span><b><span style="font-family:;" "=""> </span></b><span style="font-family:;" "="">This study was aimed at determining the effect of age on P frontal axis, QRS frontal axis, T frontal axis and frontal QRS-T</span><span style="font-family:;" "=""> </span><span style="font-family:;" "="">angle among adult Nigerians.</span><span style="font-family:;" "=""> </span><b><span style="font-family:;" "="">Methods:</span></b><b><span style="font-family:;" "=""> </span></b><span style="font-family:;" "="">This was a retrospective study in which P frontal axis, QRS frontal axis and T frontal axis of adult patients who attended a university teaching hospital were determined from 12-lead ECG. Frontal QRS-T angle was calculated as the absolute difference between the QRS frontal axis and T wave frontal axis. The electrical axes and QRS-T angle were correlated with age.</span><span style="font-family:;" "=""> </span><b><span style="font-family:;" "="">Results</span></b><b><span style="font-family:;" "="">: </span></b><span style="font-family:;" "="">There were 85 cases aged between 20 and 66 years, which included 42 males and 43 females. P frontal axis correlated positively and non-significantly with age (r =</span><span style="font-family:;" "=""> </span><span style="font-family:;" "="">-<span>0.032, p = 0.773), QRS frontal axis correlated negatively and significantly with age (r = </span>-<span>0.295, p = 0.006), T frontal axis correlated negatively and non-significantly with age (r = </span>-<span>0.002, p = 0.984), while frontal QRS-T angle correlated negat