Miall W E, Del Campo E, Fodor J, Nava Rhode J R, Ruiz L, Standard K L
Bull World Health Organ. 1972;46(6):695-708.
A longitudinal survey of heart disease in adults in a representative rural population in Jamaica provided an opportunity to study factors influencing the progression and incidence of electrocardiographic abnormalities in serial tracings taken at a 5-year interval. An analysis of changes occurring in those with ECG abnormalities compatible with ischaemia at the first survey showed that progression from a less severe to a more severe category was greater in men than in women, in hypertensive than in normotensive subjects, and, among men, in those with the amplitude criteria of left ventricular hypertrophy. The incidence of abnormal Q/QS patterns was greater in men than in women, and that of all abnormalities suggesting ischaemia was greater in hypertensive than in normotensive persons; in men, it was greater in those with high amplitude R waves. The incidence cases showed S-T and T wave abnormalities, the great majority of which were classified as showing features compatible with ischaemia rather than with strain secondary to hypertrophy. These findings, which are discussed in terms of their possible causes, seem to confirm that much of the heart disease in this Jamaican community has features of myocardial ischaemia despite other evidence that extramural coronary vessels tend to be spared from such severe occlusive atheromatous disease as is found in many other populations.
对牙买加一个具有代表性的农村成年人口进行的心脏病纵向调查，为研究在间隔5年进行的系列心电图描记中影响心电图异常进展和发生率的因素提供了契机。对首次调查时心电图异常符合缺血表现者的变化分析显示，从较轻程度进展到较严重程度，男性比女性更明显，高血压患者比血压正常者更明显，而且在男性中，符合左心室肥厚振幅标准者更明显。异常Q/QS波型的发生率男性高于女性，提示缺血的所有异常情况在高血压患者中比血压正常者更高；在男性中，高振幅R波者更高。发病病例显示S-T段和T波异常，其中绝大多数被归类为符合缺血特征而非肥厚继发劳损的特征。这些发现根据其可能的原因进行了讨论，似乎证实了这个牙买加社区的许多心脏病具有心肌缺血的特征，尽管有其他证据表明，与许多其他人群中发现的严重闭塞性动脉粥样硬化疾病相比，壁外冠状动脉往往未受影响。
