Publications by authors named "Antoinette Pechere-Bertschi"

Hypertensive disorders in pregnancy (HDP), remain the leading cause of adverse maternal, fetal, and neonatal outcomes. Epidemiological factors, comorbidities, assisted reproduction techniques, placental disorders, and genetic predisposition determine the burden of the disease. The pathophysiological substrate and the clinical presentation of HDP are multifarious.

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Background: Preeclampsia (PE) is associated with subsequent higher risk of cardiovascular and kidney disease. Serum copeptin, as a proxy for vasopressin, and urinary uromodulin, were associated with PE physiopathology and kidney functional mass respectively. We describe concentrations of these proteins in the post-partum period and characterize their association with persistent hypertension (HTN) or albuminuria.

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Highlights for 2023 include the confirmation of hypertension as a cardiovascular risk factor and the standard procedure for measuring blood pressure. Transdermal oestrogens do not appear to be associated with an increased risk of hypertension unlike oestrogen given orally. The usefulness of blood pressure measured in hospital in elderly patients and the risks of intensive treatment are reviewed.

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In both industrialized and developing countries, the prevalence of hypertension is increasing. The classical pathophysiology of this major cardiovascular risk factor has recently been enriched by new concepts involving the inflammation and the immune system as potential players. Indeed in certain immune-mediated inflammatory diseases such as psoriatic arthritis, rheumatoid polyarthritis or lupus erythematosus, but also degenerative arthritis, periodontitis, arterial hypertension is found more frequently than in the general population, often underdiagnosed and poorly controlled, and the cardiovascular (CV) risk is more important.

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Detecting, treating and controlling hypertension remains a primary goal in health policy. New recommendations in the management of hypertension were published in 2023 to withhold its global pandemic. The first step is to initiate dual antihypertensive therapy in most of the cases by combining 2 molecules from different classes in a single tablet.

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Objective: Several nonconsecutive 24-h urinary collections are considered the gold standard for estimating dietary salt intake. As those samples are logistically demanding, we aimed to describe the variability of 24-h sodium urinary excretion over consecutive days and report its adequacy with sodium intake.

Methods: We enrolled 16 healthy male volunteers in a prospective controlled study.

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Our article summarizing the most important studies of the past year emphasizes the difficulty of controlling blood pressure (BP) in hypertensive patients. In addition, it discusses factors such as temperature and sodium that may influence BP, proposes new targets in pregnant hypertensive patients, and challenges the usefulness of taking an antihypertensive drug nightly. Finally, a strategy targeting endothelin blockade in resistant hypertension is presented.

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Aims: To assess the associations of exposure and modifications in exposure (i.e., discontinuation on admission, initiation during hospitalization) to eight common cardiovascular therapies with the risk of in-hospital death among inpatients with coronavirus disease 2019 (COVID-19).

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Hypertension is a major cardiovascular risk factor in our population. This condition is widely recognized as an exacerbating factor for several physiopathological mechanisms, especially under an intense physical effort. In this article we focus on the link between high blood pressure and risk factors in scuba diving.

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Women are less frequently affected by arterial hypertension than men during their reproductive life, but their risk catches up and exceeds men's after the menopause. There is a knowledge gap about the specificity of arterial hypertension in women, due to an under inclusion of women in clinical trials. Hypertensive disorders of pregnancy are a recognized ulterior cardiovascular risk factor, and obstetrical history must be part of the evaluation of hypertensive women.

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Aims: Glomerular damage indicated by proteinuria is a main symptom in diabetic nephropathy. Mineralocorticoid receptor (MR) antagonists (MRAs) are beneficial irrespective of aldosterone availability. Thus, we hypothesized an alternatively activated MR to promote glomerular damage in proteinuric diabetic nephropathy.

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Background: The selectivity index (SI) of cortisol is used to document correct catheter placement during adrenal vein sampling (AVS) in patients with primary aldosteronism (PA). We aimed to determine the cutoff values of the SIs based on cortisol, free metanephrine, and the free-to-total metanephrine ratio (FTMR) using an adapted AVS protocol in combination with CT.

Methods: Adults with PA and referred for AVS were recruited in two hypertension centers.

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The past year has been particularly rich in the field of arterial hypertension. Our annual review covers the latest epidemiological studies which show that more than 1.2 billion people have high blood pressure, half of them are unaware of it and that only a quarter of treated patients reach the recommended targets.

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Background: Hypertension (HT) is associated with adverse outcomes in kidney transplant (KTX) recipients. Blunting of physiological decrease in nighttime compared to daytime blood pressure (non-dipping status) is frequent in this setting. However, weather non-dipping is independently associated with renal function decline in KTX patients is unknown.

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Blood pressure (BP) variability appears to be a cardiovascular risk factor in its own right. Seasonal and temperature changes contribute to BP variations in the medium term with increased BP values in winter and lowered values in summer, and in the short term by influencing the circadian rhythm of BP. International societies have not issued specific recommendations on the detection of patients at risk of significant seasonal variations in BP, nor on the possible adaptation of antihypertensive treatments.

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Thiazide diuretics (hydrochlorothiazide) and « thiazide-like » (chlorthalidone, indapamide) are widely prescribed due to their effectiveness in the treatment of arterial hypertension. The use of thiazides may be complicated by hyponatremia that is associated with increased morbidity and mortality. The pathophysiology of thiazide-induced hyponatremia is not yet clear.

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Objective: Diagnostic ratios calculated from urinary steroid hormone metabolites are used as a measure for the relative activity of steroidogenic enzymes or pathways in the clinical investigation of steroid metabolism disorders. However, population-based sex- and age-specific reference intervals and day-night differences in adults are lacking.

Methods: Sixty-five diagnostic ratios were calculated from steroid metabolites measured by GC-MS in day- and night-time and in 24-hour urine from 1128 adults recruited within the Swiss Kidney Project on Genes in Hypertension (SKIPOGH), a population-based, multicenter cohort study.

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Purpose: Poor adherence to drug therapy and inadequate drug regimens are two frequent factors responsible for the poor blood pressure (BP) control observed in patients with apparent resistant hypertension. We evaluated the efficacy of an antihypertensive management strategy combining a standardised therapy with three long acting drugs and electronic monitoring of drug adherence in patients with apparent resistant hypertension.

Materials And Methods: In this multicentric observational study, adult patients with residual hypertension on 24 h ambulatory BP monitoring (ABMP) despite the use of three or more antihypertensive drugs could be included.

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Nowadays, hardly half of treated patients do not reach ideal blood pressure targets. New approaches could help, such as the creation of a multidisciplinary network of patients, doctors, pharmacists, with the favorable effects of telemonitoring on blood pressure control and cardiovascular outcomes. An excessive fall of blood pressure (BP) after a hemorrhagic stroke, when systolic BP is superior to 220 mm Hg, is deleterious.

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Background: The effects of sodium (Na+) intakes on renal handling of potassium (K+) are insufficiently studied.

Methods: We assessed the effect of Na+ on renal K+ handling in 16 healthy males assigned to three 7-day periods on low salt diet [LSD, 3 g sodium chloride (NaCl)/day], normal salt diet (NSD, 6 g NaCl/day) and high salt diet (HSD, 15 g NaCl/day), with constant K+ intake. Contributions of distal NaCl co-transporter and epithelial Na+ channel in the collecting system on K+ and Na+ handling were assessed at steady state by acute response to 100 mg oral hydrochlorothiazide and with addition of 10 mg of amiloride to hydrochlorothiazide, respectively.

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