Blood pressure and urinary cations in a low-fat intake Chinese population sample.
BACKGROUND
The relationship between cation intake and blood pressure (BP) in populations with specific dietary habits such as a low fat intake, remains unclear. A low fat intake has been prevalent during human evolution.


METHODS
The average of 6 BP readings and heart rate (HR) recordings has been calculated. Dietary intake was measured using the 24 h recall-method. A 24 h urine sample was collected.


RESULTS
A highly significant correlation was found between the sodium/potassium ratio (Na/K), after adjustment for age, weight, height, heart rate, alcohol intake and sex and systolic blood pressure (SBP), diastolic blood pressure (DBP) and pulse pressure (PP). The same applies to the sodium/creatinine (Na/Cr) and potassium/creatinine (K/Cr) ratios, with a positive correlation for Na/Cr and a negative one for K/Cr. The partial regression coefficient was in absolute value about 4-5 times greater for K/Cr than for Na/Cr. Age correlates highly significantly and independently with both SBP and DBP.


CONCLUSIONS
If a Na/K ratio of 1 is considered optimal, by achieving that goal mean SBP could be reduced by about 6 mm Hg and mean DBP by 3 mm Hg in this normotensive population.
Xie
J
J
Department of Hypertension, Cardiovascular Institute, Chinese Academy of Medical Sciences and Fu Wai Hospital, Beijing, People's Republic of China.
Liu
L
L
Kesteloot
H
H
D000293:Adolescent; D000328:Adult; D000368:Aged; D000886:Anthropometry; D001794:Blood Pressure / Q000502:physiology*; D002412:Cations / Q000008:administration & dosage* / Q000652:urine*; D002681:China; D002784:Cholesterol / Q000097:blood; D008076:Cholesterol, HDL / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D003404:Creatinine / Q000652:urine; D004034:Diet Surveys; D018752:Diet, Fat-Restricted; D005260:Female; D006304:Health Status; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008019:Life Style; D008297:Male; D008875:Middle Aged; D011188:Potassium / Q000652:urine; D011897:Random Allocation; D012044:Regression Analysis; D012964:Sodium / Q000652:urine; D014280:Triglycerides / Q000097:blood
D002412:Cations; D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D014280:Triglycerides; D002784:Cholesterol; D012964:Sodium; D003404:Creatinine; D011188:Potassium