Cardiopulmonary Exercise Test in Peripheral Arterial Disease
10. januar 2018 opdateret af: Francesco Torella, Liverpool University Hospitals NHS Foundation Trust
The Influence of Peripheral Arterial Disease (PAD) on the Onset of Lactate Threshold (LT) in Patients Undergoing Cardiopulmonary Exercise Test (CPET)
Aim: To determine whether the lactate threshold during CPET is influenced by the presence of haemodynamically significant PAD.
Assumption: Correction of haemodynamically significant PAD results in an increased LT, measured by CPET.
Design: Prospective study Population: Thirty patients scheduled to undergo surgical or percutaneous treatment of iliofemoral arterial disease for intermittent claudication.
Studieoversigt
Status
Afsluttet
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
Patients scheduled to undergo surgery or angioplasty of the iliofemoral segment for intermittent claudication will be screened for inclusion.
Consenting patients will undergo ABI measurements and CPET before treatment and four weeks after treatment.
Study measures will be performed in the respiratory physiology laboratory at University Hospital Aintree.
Demographic and medical details will be recorded including gender, age, smoking history and pack years, medical history and treatment and BMI.
A record will be made of patuients' latest full blood count which will be routinely available in all participants before the procedure.
Ankle-brachial index will be recorded.
The subjects will undergo full CPET.
This includes recording of baseline spirometry, full ECG monitoring throughout the test, measurement of ventilator parameters and recording of Borg breathlessness and leg fatigue score every minute.
At the end of the test the reason for cessation will be documented.
The test will be incremental with a 10-20W ramp determined according to baseline MVV aiming for the subject to exercise for 10-12 minutes.
The test will involve 3 minutes rest, 2 minutes free-pedal followed by continuous ramping until volition.
Recording will continue for 5 minutes recovery
Undersøgelsestype
Interventionel
Tilmelding (Faktiske)
31
Fase
- Ikke anvendelig
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
-
-
-
Liverpool, Det Forenede Kongerige, L9 7AL
- Liverpool Vascular & Endovascular Service and Department of Respiratory Medicine, Aintree University Hospitals NHS Foundation Trust
-
-
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 og ældre (Voksen, Ældre voksen)
Tager imod sunde frivillige
Ingen
Køn, der er berettiget til at studere
Alle
Beskrivelse
Inclusion Criteria:
- Written informed consent, ability to perform a CPET on a cycle ergometer, intermittent claudication as presenting complaint, age ≥18, iliofemoral arterial disease
Exclusion Criteria:
- Critical limb ischaemia, unwillingness to consent, previous amputation or other inability to perform CPET on a cycle ergometer, age <18, absence of iliofemoral arterial disease, any standard CPET exclusion based on American Thoracic Society/European Respiratory Society Guidelines, including severe arthritis or lower limb abnormality precluding exercise testing, severe hypertension at rest, unstable angina or acute coronary syndrome within the previous 6 weeks, terminal illness/advanced cancer or major psychiatric illness, including dementia, which precludes consent
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Screening
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
|
Andet: Symptomatic Peripheral arterial disease
Patients scheduled to undergo surgery or angioplasty of the iliofemoral segment for intermittent claudication.
|
Symptoms limited Cardiopulmonary Exercise Test (CPET) performed before and four weeks after surgical or endovascular correction of peripheral arterial disease
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
The difference in Lactate Threshold (LT) between the two CPETs
Tidsramme: Four weeks following the intervention
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Four weeks following the intervention
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Sekundære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
The correlation between rise in LT post treatment (if any) and haemodynamic measures of PAD improvement (ankle-brachial index - ABI - differential).
Tidsramme: Four weeks following the intervention
|
Four weeks following the intervention
|
|
The effect of the intervention on peak oxygen delivery during exercise.
Tidsramme: Four weeks following the intervention
|
Four weeks following the intervention
|
Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Efterforskere
- Ledende efterforsker: Francesco Torella, Aintree University Hospital Foundation Trust
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
- Young EL, Karthikesalingam A, Huddart S, Pearse RM, Hinchliffe RJ, Loftus IM, Thompson MM, Holt PJ. A systematic review of the role of cardiopulmonary exercise testing in vascular surgery. Eur J Vasc Endovasc Surg. 2012 Jul;44(1):64-71. doi: 10.1016/j.ejvs.2012.03.022. Epub 2012 Apr 21.
- Barkat M, Key A, Ali T, Walker P, Duffy N, Snellgrove J, Torella F. Effect of treatment of peripheral arterial disease on the onset of anaerobic exercise during cardiopulmonary exercise testing. Physiol Rep. 2021 Apr;9(7):e14815. doi: 10.14814/phy2.14815.
- Key A, Ali T, Walker P, Duffy N, Barkat M, Snellgrove J, Torella F. Effect of peripheral arterial disease on the onset of lactate threshold during cardiopulmonary exercise test: study protocol. BMJ Open. 2016 Dec 19;6(12):e012763. doi: 10.1136/bmjopen-2016-012763.
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 (Faktiske)
1. januar 2016
Primær færdiggørelse (Faktiske)
1. april 2017
Studieafslutning (Faktiske)
1. april 2017
Datoer for studieregistrering
Først indsendt
13. januar 2016
Først indsendt, der opfyldte QC-kriterier
13. januar 2016
Først opslået (Skøn)
15. januar 2016
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
12. januar 2018
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
10. januar 2018
Sidst verificeret
1. januar 2018
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- 825/15
Plan for individuelle deltagerdata (IPD)
Planlægger du at dele individuelle deltagerdata (IPD)?
INGEN
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