Kim Chang-Yeon, Ye Mi-Kyung, Lee Young Soo
Division of Cardiology, Daegu Catholic University Medical Center, 3056-6, Daemyung-4-dong, Nam-gu, Daegu, Korea.
Departments of Otorhinolaryngology-Head and Neck Surgery, Daegu Catholic University Medical Center, Daegu, Korea.
Clin Hypertens. 2017 Nov 15;23:22. doi: 10.1186/s40885-017-0079-8. eCollection 2017.
The salt-taste threshold can influence the salt appetite, and is thought to be another marker of sodium intake. Many studies have mentioned the relationship between the sodium intake and blood pressure (BP). The aim of this study was to evaluate the relationship between the salt-taste threshold and urinary sodium excretion in normotensive and hypertensive groups.
We analyzed 199 patients (mean age 52 years, male 47.3%) who underwent 24-h ambulatory BP monitoring (ABPM). Hypertension was diagnosed as an average daytime systolic BP of ≥135 mmHg or diastolic BP of ≥85 mmHg by the ABPM. We assessed the salt-taste threshold using graded saline solutions. The salt-taste threshold, 24-h urinary sodium and potassium excretion, and echocardiographic data were compared between the control and hypertensive groups.
The detection and recognition threshold of the salt taste did not significantly differ between the control and hypertensive groups. The 24-h urinary sodium excretion of hypertensive patients was significantly higher than that of the control group (140.9 ± 59.8 vs. 117.9 ± 57.2 mEq/day, respectively, = 0.011). Also, the urinary sodium-potassium ratio was significantly higher in the hypertensive patients. There was no correlation between the salt-taste threshold and 24-h urinary sodium excretion.
The salt-taste threshold might not be related to the BP status as well as the 24-h urinary sodium excretion.
盐味阈值会影响盐食欲，并且被认为是钠摄入量的另一个指标。许多研究都提到了钠摄入量与血压（BP）之间的关系。本研究的目的是评估正常血压组和高血压组中盐味阈值与尿钠排泄之间的关系。
我们分析了199例接受24小时动态血压监测（ABPM）的患者（平均年龄52岁，男性占47.3%）。通过ABPM将高血压诊断为白天平均收缩压≥135mmHg或舒张压≥85mmHg。我们使用分级盐溶液评估盐味阈值。比较了对照组和高血压组之间的盐味阈值、24小时尿钠和钾排泄以及超声心动图数据。
对照组和高血压组之间盐味的检测和识别阈值没有显著差异。高血压患者的24小时尿钠排泄显著高于对照组（分别为140.9±59.8和117.9±57.2mEq/天，P=0.011）。此外，高血压患者的尿钠钾比也显著更高。盐味阈值与24小时尿钠排泄之间没有相关性。
盐味阈值可能与血压状态以及24小时尿钠排泄无关。
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