Abstract
Low sodium intake is the most widely used nonpharmacological approach to the treatment of hypertension. Although nonpharmacological treatment is by definition regarded as safe, the suggestion has been made that low sodium intake is not totally devoid of inconveniences, and animal data have shown it to be accompanied by an impairment of reflex blood pressure control and homeostasis. However, no data exist on this issue in humans. In mild essential hypertensive patients (age, 34.1±3.3 years [mean±SEM]), we measured beat-to-beat arterial blood pressure (finger photoplethysmographic device), heart rate (electrocardiogram), and efferent postganglionic muscle sympathetic nerve activity (microneurography) at rest and during baroreceptor stimulation and deactivation, induced by stepwise intravenous infusions of phenylephrine and nitroprusside, respectively. Measurements were performed at the end of three dietary periods, ie, after 8 days of regular sodium intake (210 mmol NaCl/d), low sodium intake (20 mmol NaCl/d) with unchanged potassium intake, and again regular sodium intake. Compared with the initial regular sodium diet, low sodium intake reduced urinary sodium excretion, whereas urinary potassium excretion was unchanged. Systolic blood pressure was significantly (P
| Original language | English |
|---|---|
| Pages (from-to) | 802-807 |
| Number of pages | 6 |
| Journal | Hypertension |
| Volume | 29 |
| Issue number | 3 |
| Publication status | Published - Mar 1997 |
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Keywords
- autonomic nervous system
- baroreceptors
- diet, low sodium
- reflex
- sympathetic nervous system
ASJC Scopus subject areas
- Internal Medicine
Cite this
Baroreflex impairment by low sodium diet in mild or moderate essential hypertension. / Grassi, Guido; Cattaneo, Bianca Maria; Seravalle, Gino; Lanfranchi, Antonio; Bolla, Giambattista; Mancia, Giuseppe.
In: Hypertension, Vol. 29, No. 3, 03.1997, p. 802-807.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Baroreflex impairment by low sodium diet in mild or moderate essential hypertension
AU - Grassi, Guido
AU - Cattaneo, Bianca Maria
AU - Seravalle, Gino
AU - Lanfranchi, Antonio
AU - Bolla, Giambattista
AU - Mancia, Giuseppe
PY - 1997/3
Y1 - 1997/3
N2 - Low sodium intake is the most widely used nonpharmacological approach to the treatment of hypertension. Although nonpharmacological treatment is by definition regarded as safe, the suggestion has been made that low sodium intake is not totally devoid of inconveniences, and animal data have shown it to be accompanied by an impairment of reflex blood pressure control and homeostasis. However, no data exist on this issue in humans. In mild essential hypertensive patients (age, 34.1±3.3 years [mean±SEM]), we measured beat-to-beat arterial blood pressure (finger photoplethysmographic device), heart rate (electrocardiogram), and efferent postganglionic muscle sympathetic nerve activity (microneurography) at rest and during baroreceptor stimulation and deactivation, induced by stepwise intravenous infusions of phenylephrine and nitroprusside, respectively. Measurements were performed at the end of three dietary periods, ie, after 8 days of regular sodium intake (210 mmol NaCl/d), low sodium intake (20 mmol NaCl/d) with unchanged potassium intake, and again regular sodium intake. Compared with the initial regular sodium diet, low sodium intake reduced urinary sodium excretion, whereas urinary potassium excretion was unchanged. Systolic blood pressure was significantly (P
AB - Low sodium intake is the most widely used nonpharmacological approach to the treatment of hypertension. Although nonpharmacological treatment is by definition regarded as safe, the suggestion has been made that low sodium intake is not totally devoid of inconveniences, and animal data have shown it to be accompanied by an impairment of reflex blood pressure control and homeostasis. However, no data exist on this issue in humans. In mild essential hypertensive patients (age, 34.1±3.3 years [mean±SEM]), we measured beat-to-beat arterial blood pressure (finger photoplethysmographic device), heart rate (electrocardiogram), and efferent postganglionic muscle sympathetic nerve activity (microneurography) at rest and during baroreceptor stimulation and deactivation, induced by stepwise intravenous infusions of phenylephrine and nitroprusside, respectively. Measurements were performed at the end of three dietary periods, ie, after 8 days of regular sodium intake (210 mmol NaCl/d), low sodium intake (20 mmol NaCl/d) with unchanged potassium intake, and again regular sodium intake. Compared with the initial regular sodium diet, low sodium intake reduced urinary sodium excretion, whereas urinary potassium excretion was unchanged. Systolic blood pressure was significantly (P
KW - autonomic nervous system
KW - baroreceptors
KW - diet, low sodium
KW - reflex
KW - sympathetic nervous system
UR - http://www.scopus.com/inward/record.url?scp=0031020449&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031020449&partnerID=8YFLogxK
M3 - Article
VL - 29
SP - 802
EP - 807
JO - Hypertension
JF - Hypertension
SN - 0194-911X
IS - 3
ER -