Tags

Type your tag names separated by a space and hit enter

Relationship of urinary sodium/potassium excretion and calcium intake to blood pressure and prevalence of hypertension among older Chinese vegetarians.
Eur J Clin Nutr. 2003 Feb; 57(2):299-304.EJ

Abstract

OBJECTIVE

To examine the associations of dietary sodium and potassium, as reflected by the urinary sodium/potassium excretion, and calcium intake with blood pressure and the prevalence of hypertension among older Chinese vegetarians in Hong Kong.

DESIGN

Cross-sectional study.

SETTING

Research clinic in a teaching hospital in Hong Kong.

SUBJECTS

A total of 111 ambulatory vegetarians over the age of 55 were recruited from members of religious organizations or old age hostels.

MAIN OUTCOME MEASURES

Hypertension was defined as supine blood pressure >140/90 mmHg or a history of hypertension. Dietary sodium, potassium and calcium intakes were assessed by 24 h recall method or fasting urinary sodium or potassium/creatinine ratios.

RESULTS

Seventy-one subjects (64%) were found to have hypertension. Compared with normotensive subjects, hypertensive subjects had lower calcium intake (411+/-s.d. 324 vs 589+/-428 mg, P=0.04), but higher urinary sodium/creatinine ratio (32.6+/-19.3 vs 21.0+/-12.4, P=0.00) and sodium/potassium ratio (4.7+/-2.8 vs 3.4+/-2.3, P=0.02). Among 88 subjects not taking diuretics or antihypertensive drugs, systolic blood pressure was related to calcium intake (r=-0.40), urinary sodium/creatinine ratio (r=0.39), urinary sodium/potassium ratio (r=0.30) and age (r=0.23). Diastolic blood pressure was related to urinary sodium/creatinine (r=0.29). Twenty-three subjects with high urinary sodium/potassium and low calcium intake and 16 subjects with low urinary sodium/potassium ratio and high calcium intake differed markedly with respect to systolic blood pressure (159+/-26 vs 130+/-15 mmHg) and prevalence of hypertension (78% vs 25%).

CONCLUSIONS

Older Chinese vegetarians are predisposed to hypertension because of their sodium-rich but calcium-deficient diets.

Authors+Show Affiliations

Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, New Territories, Hong Kong. tkwok@cuhk.edu.hkNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

12571663

Citation

Kwok, T C Y., et al. "Relationship of Urinary Sodium/potassium Excretion and Calcium Intake to Blood Pressure and Prevalence of Hypertension Among Older Chinese Vegetarians." European Journal of Clinical Nutrition, vol. 57, no. 2, 2003, pp. 299-304.
Kwok TC, Chan TY, Woo J. Relationship of urinary sodium/potassium excretion and calcium intake to blood pressure and prevalence of hypertension among older Chinese vegetarians. Eur J Clin Nutr. 2003;57(2):299-304.
Kwok, T. C., Chan, T. Y., & Woo, J. (2003). Relationship of urinary sodium/potassium excretion and calcium intake to blood pressure and prevalence of hypertension among older Chinese vegetarians. European Journal of Clinical Nutrition, 57(2), 299-304.
Kwok TC, Chan TY, Woo J. Relationship of Urinary Sodium/potassium Excretion and Calcium Intake to Blood Pressure and Prevalence of Hypertension Among Older Chinese Vegetarians. Eur J Clin Nutr. 2003;57(2):299-304. PubMed PMID: 12571663.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Relationship of urinary sodium/potassium excretion and calcium intake to blood pressure and prevalence of hypertension among older Chinese vegetarians. AU - Kwok,T C Y, AU - Chan,T Y K, AU - Woo,J, PY - 2002/04/11/received PY - 2002/06/07/revised PY - 2002/06/11/accepted PY - 2003/2/7/pubmed PY - 2003/7/17/medline PY - 2003/2/7/entrez SP - 299 EP - 304 JF - European journal of clinical nutrition JO - Eur J Clin Nutr VL - 57 IS - 2 N2 - OBJECTIVE: To examine the associations of dietary sodium and potassium, as reflected by the urinary sodium/potassium excretion, and calcium intake with blood pressure and the prevalence of hypertension among older Chinese vegetarians in Hong Kong. DESIGN: Cross-sectional study. SETTING: Research clinic in a teaching hospital in Hong Kong. SUBJECTS: A total of 111 ambulatory vegetarians over the age of 55 were recruited from members of religious organizations or old age hostels. MAIN OUTCOME MEASURES: Hypertension was defined as supine blood pressure >140/90 mmHg or a history of hypertension. Dietary sodium, potassium and calcium intakes were assessed by 24 h recall method or fasting urinary sodium or potassium/creatinine ratios. RESULTS: Seventy-one subjects (64%) were found to have hypertension. Compared with normotensive subjects, hypertensive subjects had lower calcium intake (411+/-s.d. 324 vs 589+/-428 mg, P=0.04), but higher urinary sodium/creatinine ratio (32.6+/-19.3 vs 21.0+/-12.4, P=0.00) and sodium/potassium ratio (4.7+/-2.8 vs 3.4+/-2.3, P=0.02). Among 88 subjects not taking diuretics or antihypertensive drugs, systolic blood pressure was related to calcium intake (r=-0.40), urinary sodium/creatinine ratio (r=0.39), urinary sodium/potassium ratio (r=0.30) and age (r=0.23). Diastolic blood pressure was related to urinary sodium/creatinine (r=0.29). Twenty-three subjects with high urinary sodium/potassium and low calcium intake and 16 subjects with low urinary sodium/potassium ratio and high calcium intake differed markedly with respect to systolic blood pressure (159+/-26 vs 130+/-15 mmHg) and prevalence of hypertension (78% vs 25%). CONCLUSIONS: Older Chinese vegetarians are predisposed to hypertension because of their sodium-rich but calcium-deficient diets. SN - 0954-3007 UR - https://www.unboundmedicine.com/medline/citation/12571663/Relationship_of_urinary_sodium/potassium_excretion_and_calcium_intake_to_blood_pressure_and_prevalence_of_hypertension_among_older_Chinese_vegetarians_ L2 - https://doi.org/10.1038/sj.ejcn.1601553 DB - PRIME DP - Unbound Medicine ER -