A Comparative Study of Myocardial Infarction and Cerebral Vascular Accidents

Bull, G.M.

doi:10.1159/000245234

Cited by 7 publications

(4 citation statements)

References 3 publications

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“…The death rates from both conditions are highly correlated with air temperature but it is argued by some (Anderson and le Riche, 1970) that the association is indirect and arises because respiratory and infective disease is also commoner in cold weather and predisposes to vascular thrombosis. This paper is concerned with an exploration of this possibility and also with an examination of meteorological variables other than temperature (see Rose, 1966;Bull, 1969).…”

mentioning

confidence: 99%

Meteorological correlates with myocardial and cerebral infarction and respiratory disease.

Bull¹

1973

Journal of Epidemiology & Community Health

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mentioning

confidence: 99%

Meteorological correlates with myocardial and cerebral infarction and respiratory disease.

Bull¹

1973

Journal of Epidemiology & Community Health

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“…According to Ohno et a1 (11) the influence of meteorological factors or of their evolution is higher on cerebral hemorrhages than on cerebral infarction. A negative correlation between the rate of admissions for cerebral vascular accidents and the temperature was shown by Bull (7). This temperature effect is reported to be most marked in people over 55 years old (10).…”

Section: Discussionmentioning

confidence: 95%

“…Several studies have suggested that climatic conditions can influence the probability of developing cerebrovascular diseases or myocardial infarctions (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17). Overall conclusions are not easily drawn from their results.…”

mentioning

confidence: 99%

Multivariate analysis of the effect of climatic factors on the probability of cerebral infarction according to age

Maertelaer¹,

Jacquy²

1987

Acta Neurologica Scandinavica

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This study investigates the effects of: the mean daily air temperature; the mean daily atmospheric pressure; and the temperature evolution (cooling, stable or reheating) on the probability of cerebral infarction. Data were collected during a three-year period in a country with a mild, maritime temperate climate. In men younger than 70, the probability of cerebral infarction mainly depends on temperature. Temperature is also the main statistically significant factor affecting the rate of cerebral infarction in women under 75; this effect is modulated by temperature evolution. Conversely, no clear effect of climatic factors could be found either on men older than 70 or women older than 75.

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“…In previous publications we reported that there is a negative correlation between atmospheric temperature and the death rates from a number of conditions, in particular, myocardial infarction and cerebrovascular accidents (Bull, 1969;Bull, 1973;Bull and Morton, 1975a, b). This inverse relationship between temperature and death rates was confined to or found to be greatest in older subjects (Bull, 1973;Bull and Morton, 1975a).…”

mentioning

confidence: 84%

Relationship of air temperature to various chemical, haematological, and haemostatic variables.

Bull¹,

Brozović²,

Chakrabarti³

et al. 1979

J Clin Pathol

100

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SUMMARY Results for biochemical and haematological variables have been correlated with data on atmospheric temperature in order to identfy possible mechanisms through which low environmental temperature may increase mortality from myocardial infarction and cerebrovascular disease. With the exception of cholesterol, there were no associations in the case of several clinical chemistry variables, or of haemoglobin and related indices. With varying degrees of consistency among the sex and age groups studied, temperature was positively correlated with factor VII, antithrombin III, and cholesterol, and negatively correlated with fibrinolytic activity. The correlations were all low but may offer some clues to mechanisms whereby air temperature influences ischaemic heart and cerebrovascular disease mortality.In previous publications we reported that there is a negative correlation between atmospheric temperature and the death rates from a number of conditions, in particular, myocardial infarction and cerebrovascular accidents (Bull, 1969;Bull, 1973; Bull and Morton, 1975a, b). This inverse relationship between temperature and death rates was confined to or found to be greatest in older subjects (Bull, 1973;Bull and Morton, 1975a).In these earlier publications we speculated on a possible causal relationship between temperature and cerebrovascular and ischaemic heart disease. If the relationship between environmental temperature and mortality rates from arterial diseases is one of cause and effect, it is presumably mediated by changes in one or more body systems; these changes might be detectable in groups of people (mostly without clinical arterial disease) for whom biochemical, haematological, and other data can be related to environmental temperature. We have therefore studied the associations between the levels of various blood constituents and atmospheric temperature. MaterialThere are four sources of data. March 1978 in an archival file on a computer together with identifying particulars and the date of the sample. The file for 1973 was used to prepare a table of the mean blood levels of 10 blood constituents by days in each sex and in two age groups (< 55 and > 55 years). All readings outside the limits of 2 standard deviations (SD) from the quality control mean of the laboratory were rejected before calculation of the daily means. Thus the mean values should approximate to the 'normal' mean values for this hospital's population. In all, data from 103 370 individual blood samples were available for analysis, and on most of these five or more blood constituents were analysed.The number of individual readings making up the daily mean varied, and on certain days, at weekends or on public holidays, none was available. The missing values were filled by inserting the average of the readings straddling the vacant cell.

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A Comparative Study of Myocardial Infarction and Cerebral Vascular Accidents

Cited by 7 publications

References 3 publications

Meteorological correlates with myocardial and cerebral infarction and respiratory disease.

Meteorological correlates with myocardial and cerebral infarction and respiratory disease.

Multivariate analysis of the effect of climatic factors on the probability of cerebral infarction according to age

Relationship of air temperature to various chemical, haematological, and haemostatic variables.

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