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Nocturnal Blood Pressure - Central and Peripheral 24-h Blood Pressure in Chronic Kidney Disease. (NOSA)

8. oktober 2014 opdateret af: Erling Bjerregaard Pedersen

Nocturnal Blood Pressure in Chronic Kidney Disease, Obstructive Sleep Apnea and Healthy Subjects - Central and Peripheral 24-h Blood Pressure.

A new study have shown that high nighttime blood pressure (BP) and/or non-dipping (lack of fall in blood pressure during nighttime) is a strong predictor for the risk of cardiovascular disease and mortality in patients with hypertension. Three factors seem to affect the night time blood pressure: chronic kidney disease, obstructive sleep apnea (OSA) or the way ambulatory blood pressure is monitored.

The aim of this study is to analyse the importance of these three factors on nighttime bloodpressure.

Hypothesis:

Central 24 hour blood pressure monitoring provides another measure of daily fluctuations in blood pressure than peripheral 24 hour blood pressure monitoring, because measurement is painless and does not interfere with activities during the daytime or night-time sleep

In chronic kidney disease and OSA the decrease in nocturnal BP is lower than in healthy subjects.

In chronic kidney disease the decrease in the nocturnal BP is inversely correlated to the severity of OSA, the severity of kidney disease, and blood pressure during daytime.

Studieoversigt

Status

Ukendt

Betingelser

Detaljeret beskrivelse

150 patients with chronic kidney disease (CKD III-IV) and 75 healthy subject is examined with both central and peripheral 24 hours blood pressure monitoring, 1 night home polygraphy to determine whether the subject has obstructive sleep apnea, and if so the degree (AHI), blood- and urine samples to determine levels of u-AQP2 og u-ENaCɣ, PRC, p-AngII, p-Aldosterone, p-Avp og p-Endothelin.

Undersøgelsestype

Observationel

Tilmelding (Forventet)

225

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Danmark
      • Holstebro, Danmark, 7500
        • Department of Medical Research and Medicine, Holstebro Regional Hospital

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 80 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ja

Køn, der er berettiget til at studere

Alle

Prøveudtagningsmetode

Ikke-sandsynlighedsprøve

Studiebefolkning

Group 1: Patients with chronic kidney disease, CKD stage III-IV. The patients is followed for their kidney disease at Holstebro Regional Hospital, Denmark, Medical clinic, and the are chosen to participate in the study because of this relation.

Group 2: Healthy subjects. They arerecruited through postings on public and private companies as well as advertising in local medier.

Beskrivelse

Patients, group 1:

Inclusion Criteria:

  • eGFR 15-59 mL/min/1.73 m2 (estimated GFR)
  • 18-80 years
  • males and females

Exclusion Criteria:

  • lack of desire to participate
  • treatment for OSA
  • malignant disease
  • Abuse of drugs or alcohol
  • pregnant and lactating
  • incompensated heart failure
  • atrial fibrillation
  • liver disease (ALAT> 200)
  • Severe chronic obstructive lung disease (forced expiratory volume in 1 second <50% predicted)

Healthy Subjects:

inclusion criteria

  • Healthy volunteers men and women
  • age 40 - 80 years
  • BMI within the normal range, ie. between 18.5 to 25.0 kg/m2

exclusion Criteria

  • Arterial hypertension, ie. ambulatory blood pressure> 130 mmHg systolic and / or 80 mmHg diastolic.
  • a history or clinical signs of cardial, pulmonary, hepato, renal, endocrine, cerebral or neoplastic disorders
  • Alcohol abuse, ie. > 14 drinks / week for women and> 21/uge for men
  • Substance abuse
  • Daily medicine intake/ treatment apart from oral contraceptives
  • Smoking
  • Pregnancy or breastfeeding
  • Lack of desire to participate
  • Clinically significant, discrepant results of blood or urine sample at inclusion study (ie B-hemoglobin and B-White blood cell count, p-Sodium, p-Potassium, p-creatinine, p-ALAT, p-bilirubin , p-alkaline phosphatase, p-cholesterol, p-albumin or b-glucose and urine for hematuria, albuminuria or glucosuria)
  • Clinically significant differences in the electrocardiogram
  • Blood Donation for the past month preceding the day on the first attempt sequence.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Chronic kidney disease, CKD III+IV
150 patients with Chronic kidney disease, CKD stage III+IV.
Healthy subjects
75 healthy subjects.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
decrease in peripheral systolic blood pressure at night
Tidsramme: < 24 hours
The difference in the decrease in systolic blood pressure at night by peripheral 24-h BP between patients with chronic kidney disease and healthy subjects.
< 24 hours

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
decrease in central systolic blood pressure at night
Tidsramme: < 24 hours
The difference in the decrease in systolic BP at night by central 24-h BP between patients with chronic kidney disease and healthy subjects.
< 24 hours
difference in peripheral and central systolic and diastolic blood pressure throughout the day, during the daytime and during nighttime
Tidsramme: < 24 hours
The difference in systolic blood pressure and diastolic blood pressure throughout the day, during the daytime and during nighttime between measurements with peripheral 24-hour monitoring and central 24 hour monitoring in both patients with chronic kidney disease and healthy subjects.
< 24 hours
The correlation between the decrease in nighttime blood pressure on the one hand and severity of OSA, severity of kidney disease and blood pressure during the daytime on the other.
Tidsramme: < 24 hours
< 24 hours
U-AQP2 (urine aquaporin 2) og u-ENaCɣ (urine epithelial sodium channel)
Tidsramme: 24 hours
24 hour urine sample.
24 hours
PRC (plasma renin concentration), p-AngII (angiotensin II), p-Aldosterone. P-Avp (vasopressin), p-Endothelin.
Tidsramme: < 1 hour
< 1 hour

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Erling Bjerregaard Pedersen

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. oktober 2013

Primær færdiggørelse (Forventet)

1. december 2015

Studieafslutning (Forventet)

1. oktober 2017

Datoer for studieregistrering

Først indsendt

23. september 2013

Først indsendt, der opfyldte QC-kriterier

23. september 2013

Først opslået (Skøn)

26. september 2013

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

9. oktober 2014

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

8. oktober 2014

Sidst verificeret

1. oktober 2014

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • BGH-1-2013
  • M-2013-224-13 (Anden identifikator: The Regional Committee of Health Research Ethics)

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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