In SR participants i observed no matchmaking ranging from urinary Na + excretion and you may SBP
In the current study, using data from the DASH–Sodium trial, during screening when participants are consuming their normal dietary intake, we report a slope increment of an elevation in SBP of approximately 3 mmHg across the urinary Na + excretion range of 2–5 g/day in SS, but not SR participants. However, when assessed across the full range of observed urinary Na + excretion values we did not observe a positive correlation between SBP and urinary Na + excretion in either SS or SR participants. Significantly, despite urinary K + excretion of <1 g K + /day associating with higher SBP in SS and SR participants further increments in urinary K + excretion did not correlate with a reduction in SBP in either participant group. Furthermore, at baseline screening we did not observe a correlation between the urinary Na + :K + excretion ratio irrespective of the salt sensitivity of blood pressure. Following the DASH dietary intervention we observed no correlation between a urinary Na + :K + ratio and SBP in either SS or SR participants. As such our data, from the DASH–Sodium Trial, in US participants at both baseline screening and following a highly controlled dietary intervention does not support the hypothesis that a reduced urinary Na + :K + ratio will be beneficial in population level blood pressure reduction or support the proposal for a urinary Na + :K + molar ratio of <1 to lower blood pressure.
From inside the a good randomized managed demo presented when you look at the free-living non-diet managed members that have an indicate SBP out of 132 mmHg and perhaps not taking hypertension lowering procedures, K + consumption are enhanced from the dieting intake (via fruits and you may vegetable intake) or lead K + supplements
Compared with new Natural , INTERSALT , and INTERMAP education, one situated an inhabitants peak self-confident association between urinary Na + removal and blood circulation pressure, new Dashboard–Sodium Demonstration allows the latest institution of one’s salt sensitivity away from bloodstream stress in demo people. In contrast, when you look at the SS members we noticed a mountain increment out-of an increase in the SBP of 1.step 3 mmHg for every 1 g escalation in urinary Na + removal along the removal selection of step three–5 grams Na + /go out that’s inside typical mediocre set of each and every day Na + consumption in the us . However, when examined across the entire hookup sites free legit variety of observed urinary Na + removal, we observed no organization between urinary Na + excretion and you will SBP either in SS otherwise SR users. I imagine which difference ranging from an optimistic relationships anywhere between SBP and urinary Na + excretion in the requested range of dietary Na + excretion from 3–5 g/big date with no connection along the over listing of philosophy reflects the brand new effect out-of multiple professionals about Dash–Salt analysis appearing high amounts of urinary Na + excretion, higher than 5 grams/go out, and you may relatively reasonable hypertension. Somewhat, the significance obtained within investigation for an increase in SBP in this step 3–5 g/time Na + removal is comparable to one gotten on the Pure studies hence claimed a confident hill increment away from a 1.seven mmHg boost in SBP for every single step 1 grams rise in urinary Na + excretion along the same directory of Na + removal opinions . The difference between the latest observed upsurge in SBP as a result in order to elevated urinary Na + excretion between Dash-Salt and you may Natural ple proportions and you can racial experiences of members and you will (2) the possibility differences in remedies for assess urine content out of twenty-four-h urine range versus an estimation from 1 day destination urine shot about Dash-Salt instead of Pure Data correspondingly. All of our study support recommendations in order to limit fat reduction Na + intake [5, 24] and you may advise that shorter weightloss salt intake may only lower SBP into the SS patients.
The influence of K + intake on blood pressure remains controversial, with conflicting data emerging from multiple clinical studies . In this study increased K + intake up to 40 mmol/day had no impact on blood pressure [22, 26]. A separate randomized placebo-controlled crossover trial was conducted in participants who have never received antihypertensive medication with mildly elevated blood pressure . Participants were maintained on their normal diet and received K + at 64 mmol/day for a 4-week period as either potassium chloride or bicarbonate-in this study there was no effect of K + supplementation on office blood pressure . In contrast in a randomized placebo-controlled, crossover study, in which untreated patients with a mean SBP of 145 mmHg blood pressure received 4 weeks of supplemental K + at 3 g/day and a diet relatively low in Na + reported a reduction in SBP of 3.9 mmHg. Beyond the highly controlled trials discussed above the PURE study reports that for each increment of 1 g/day of urinary K + excretion there is a reduction of 0.75 mmHg in SBP across the excretion range of <1.25 to 3 g K + /day . In the DASH–Sodium data, we observed an elevation in SBP in both SS and SR participants when urinary K + excretion was below 1 g/day. However, we did not observe any correlation between urinary K + excretion and SBP or an impact of urinary K + excretion on SBP over the range of <1 to >3 g K + excretion per day. We speculate that discrepancy between the PURE study data and our own analysis of the DASH-Sodium data may reflect the difference in SBP response to urinary K + excretion reported in PURE between Chinese and non-Chinese participants. Chinese participants exhibited a large reduction in SBP with increased urinary K + excretion versus a smaller SBP effect in participants from the rest of the world. As the DASH-Sodium trial did not contain Chinese participants this may have influenced the outcome.