Right Side of Heart Function After Lung Surgery
The Pulmonary Vascular / Right Ventricular Response to Lung Resection
Studieöversikt
Status
Betingelser
Intervention / Behandling
Detaljerad beskrivning
Lung cancer is the second most common cancer in the UK. In suitable cases the best chance of cure is surgical resection. Studies suggest that lung resection is associated with right ventricular (RV) dysfunction, predisposing to complications and post-operative dyspnoea. Studies of RV function following lung resection have been hampered by the limitations of the techniques used. In addition the mechanism of RV dysfunction has remained elusive.
In this prospective observational study the RV response to lung resection will be characterised by sequential assessment of right ventricular ejection fraction (RVEF) measured using cardiovascular magnetic resonance (CMR). CMR is non-invasive, involves no ionising radiation and due to its high spatial resolution is the gold standard for assessing RV volumes. Comprehensive CMR and echocardiographic assessment of the pulmonary vascular - RV axis will allow us to interpret peri-operative changes in RVEF in the context of RV contractility and loading indices. In addition, contemporaneous blood samples will be taken for measurement of biomarkers of myocardial and endothelial dysfunction and systemic inflammation.
With increased understanding of the mechanisms involved, it may be possible to prevent RV dysfunction; reducing complication rates, hospital stay and costs and ameliorating long term dyspnoea.
Studietyp
Inskrivning (Förväntat)
Kontakter och platser
Studieorter
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Clydebank, Storbritannien
- Golden Jubilee National Hospital
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Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Kön som är behöriga för studier
Testmetod
Studera befolkning
Beskrivning
Inclusion Criteria:
- Provision of informed consent
- Age >16 years
- Planned elective lung resection by lobectomy
Exclusion Criteria:
- Pregnancy
- On-going participation in any investigational research which could undermine the scientific basis of the study
Contraindications to magnetic resonance imaging:
i. Cardiac pacemaker, artificial heart valve, neurostimulator, cochlear implant ii. Aneurysm clips iii. Metal injuries to the eye iv. Loose metal in an part of the body
- Wedge / segmental / sub-lobar lung resection
- Pneumonectomy
- Isolated right middle lobectomy
Studieplan
Hur är studien utformad?
Designdetaljer
Kohorter och interventioner
Grupp / Kohort |
Intervention / Behandling |
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Study population - lung resection
Patients with suspected lung cancer undergoing lung resection by anatomic lobectomy
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Andra namn:
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Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Right ventricular ejection fraction
Tidsram: 3 days
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The primary objective of this study is determine whether RVEF falls post-operatively in patients undergoing lung resection.
The primary outcome is RVEF at 3 days post-lung resection compared to pre-operative values determined by CMR.
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3 days
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Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
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Association between RVEF and contractility / loading indices
Tidsram: 3 days
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Changes in RVEF must be interpreted in the context of changes in RV contractility and loading parameters. Changes in pre-load, contractility, afterload, ventriculo-arterial coupling, diastolic function and the position of the mediastinum could all potentially influence RVEF.The following indices will be subject to assessment as secondary endpoints: Preload - Right ventricular end-diastolic volume (RVEDV) Contractility - Peak systolic strain and strain rate Afterload - Pulmonary artery (PA) distensibility, PA peak velocitly, PA antegrade flow, Estimated PA systolic pressure,Pulmonary artery acceleration time Ventriculo-arterial coupling: Ea/Emax(CMR) Diastolic function: E/A velocity ratio. |
3 days
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RVEF vs LVEF
Tidsram: 3 days
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Changes in right-sided cardiac function must be interpreted in the context of left-sided function.
ΔRVEF will be compared to changes in Left Ventricular Ejection Fraction (LVEF) over the same period.
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3 days
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Association between biomarkers of myocardial and endothelial dysfunction, systemic inflammation, oxidative and nitrosative stress and ΔRVEF
Tidsram: 3 days
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Association between biomarkers of myocardial and endothelial dysfunction, systemic inflammation, oxidative and nitrosative stress and ΔRVEF. Myocardial dysfunction: Brain natriuretic peptide and high sensitivity Troponin-T. Systemic inflammation: C-reactive protein and Pentraxin 3. Oxidative / Nitrosative stress: Malondialdehyde, nitrate and nitrite (determined in plasma and endobronchial aspirate and the end of surgery). Endothelial dysfunction: Angiopoietin (Ang) 1 & 2, Von Willebrand factor (VWf), E-selectin (ESEL) and soluble intracellular adhesion molecule (sICAM)). |
3 days
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Association between RVEF and functional status
Tidsram: 3 months and 1 year
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Association between RVEFpreop, RVEFpostop, and RVEF3months and functional status by self report and 6-minute walk test (6MWT).
Functional status will be assessed subjectively by written questionnaire.
Scoring will be based on the New York Heart Association (NYHA) classification, WHO performance status classification and health related quality of life scoring by EQ-5D questionnaire.
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3 months and 1 year
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Samarbetspartners och utredare
Sponsor
Samarbetspartners
Utredare
- Huvudutredare: Ben Shelley, MB ChB, University of Glasgow
Publikationer och användbara länkar
Allmänna publikationer
- Glass A, McCall P, Arthur A, Mangion K, Shelley B. Pulmonary artery wave reflection and right ventricular function after lung resection. Br J Anaesth. 2023 Jan;130(1):e128-e136. doi: 10.1016/j.bja.2022.07.052. Epub 2022 Sep 15.
- Young DJ, McCall PJ, Kirk A, Macfie A, Kinsella J, Shelley BG. B-type natriuretic peptide predicts deterioration in functional capacity following lung resection. Interact Cardiovasc Thorac Surg. 2019 Jun 1;28(6):945-952. doi: 10.1093/icvts/ivz016.
Studieavstämningsdatum
Studera stora datum
Studiestart
Primärt slutförande (Faktisk)
Avslutad studie (Förväntat)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Uppskatta)
Uppdateringar av studier
Senaste uppdatering publicerad (Uppskatta)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Nyckelord
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- 1-shelly
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