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Blood pressure and salt intake: Translating the benefits of salt reduction into practice

A randomised parallel study to assess the effect of dietary education about salt intake compared with usual care in individuals with hypertension who have lost weight following laparoscopic adjustable gastric banding.

Status
Withdrawn
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12611000511932
Enrollment
60
Registered
2011-05-17
Start date
2011-05-13
Completion date
Unknown
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

A high salt intake is a neglected risk factor for heart disease and stroke. Recently attention has been drawn to the potential reduction in death and disease a decrease of 3g salt/day can bring. The aim of this study is to translate knowledge into practice by substantiating dietetic practice in salt reduction in individuals with hypertension at increased risk of cardiovascular disease. Cardiovascular disease is a significant burdens for individuals and for the Australian health care system potentially leading to early death or disability. Keeping blood pressure well controlled has a key role in the prevention of cardiovascular disease. Salt reduction can greatly assist blood pressure control but there are no studies evaluating the most effective education strategies to help people with hypertension implement and maintain salt reduction. This study will help fill this gap. The expected outcomes are that a lower salt intake of 6g/day is sustainable and will reduce blood pressure by 3-5mmHg SBP/day.

Interventions

Usual salt intake in overweight and obese people is approximately 11 g salt/day in men and 8 g salt/day in women which is much higher than the NHMRC population target of 6g salt/day. In this study patients will be educated to reduce their salt intake using the simple strategy to choose foods defined according to the Food Standards Australia and New Zealand (FSANZ) guideline of 120 mg sodium/100g food. They will also be given general guidelines regarding reducing sodium intake. This advice will

Usual salt intake in overweight and obese people is approximately 11 g salt/day in men and 8 g salt/day in women which is much higher than the NHMRC population target of 6g salt/day. In this study patients will be educated to reduce their salt intake using the simple strategy to choose foods defined according to the Food Standards Australia and New Zealand (FSANZ) guideline of 120 mg sodium/100g food. They will also be given general guidelines regarding reducing sodium intake. This advice will be given on an individual basis by a dietitian at the start of the study and participants will have access to the dietitian for advice and support regarding dietary changes throughout the study. Interventions will require three visits of about 30 minutes duration at the start of the study, and at three and six months, where blood pressure will be taken and height and weight measured. A 24 hour urine sample will also be collected on each occasion. Compliance will be assessed by sodium excretion measurement.

Sponsors

Baker IDI
Lead SponsorOther Collaborative groups

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Open (masking not used)

Eligibility

Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

People who have lost weight following laparoscopic adjustable gastric banding who have hypertension

Exclusion criteria

Subjects with known metabolic disease such as liver or kidney disease. Use of non-steroidal anti-inflammatory drugs because of their effect on sodium retention.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026