Evidence map›Paper›PMID 33016881›Full record

ArticleEuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology2021

Normal values of thermodilution-derived absolute coronary blood flow and microvascular resistance in humans.

Stephane Fournier, Daniëlle C J Keulards, Marcel van 't Veer, Iginio Colaiori, Giuseppe Di Gioia, Frederik M Zimmermann, Takuya Mizukami, Sakura Nagumo, Monika Kodeboina, Mohamed El Farissi and 5 more

Open access · greenAbstract read
In one paragraph

Article in EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed
6.5field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

39 citing papers in PubMed, 72 citations in OpenAlex.

  1. Trial
  2. Reproducibility of bolus versus continuous thermodilution for assessment of coronary microvascular function in patients with ANOCA.EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology · 2023
    Trial
  3. Review
  4. Review
  5. Article
  6. Article
  7. Review
  8. Epicardial adipose tissue in coronary microvascular disease.American heart journal plus : cardiology research and practice · 2026
    Review
  9. Article
  10. Article
  11. A Comparison of Coupling Strategies for 1D-3D Simulations of Coronary Hemodynamics.International journal for numerical methods in biomedical engineering · 2025
    Article
  12. Invasive Endotyping of Angina Pectoris with Nonobstructive Coronary Arteries.The International journal of angiology : official publication of the International College of Angiology, Inc · 2025
    Review
  13. Article
  14. Coronary microvascular disease in patients referred to coronary angiography following coronary computed tomography angiography.EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology · 2025
    Observational
  15. Coronary flow and resistance patterns indexed by subtended myocardial mass in coronary microvascular dysfunction.EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology · 2025
    Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

15 authors at 1 institution in 1 country.

Stephane FournierCardiovascular Centre Aalst, OLV Clinic, Aalst, Belgium.
Daniëlle C J Keulards
Marcel van 't Veer
Iginio Colaiori
Giuseppe Di Gioia
Frederik M Zimmermann
Takuya Mizukami
Sakura Nagumo
Monika Kodeboina
Mohamed El Farissi
Jo M Zelis
Jeroen Sonck
Carlos Collet
Nico H J Pijls
Bernard De Bruyne
Onze Lieve Vrouwziekenhuis Hospital · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAbsolute hyperaemic coronary blood flow (Q, in mL/min) and resistance (R, in Wood units [WU]) can be measured invasively by continuous thermodilution.

aimsThe aim of this study was to assess normal reference values of Q and R.

methodsIn 177 arteries (69 patients: 25 controls, i.e., without identifiable coronary atherosclerosis; 44 patients with mild, non-obstructive atherosclerosis), thermodilution-derived hyperaemic Q and total, epicardial, and microvascular absolute resistances (Rtot, Repi, and Rmicro) were measured. In 20 controls and 29 patients, measurements were obtained in all three major coronary arteries, thus allowing calculations of Q and R for the whole heart. In 15 controls (41 vessels) and 25 patients (71 vessels), vessel-specific myocardial mass was derived from coronary computed tomography angiography.

resultsWhole heart hyperaemic Q tended to be higher in controls compared to patients (668±185 vs 582±138 mL/min, p=0.068). In the left anterior descending coronary artery (LAD), hyperaemic Q was significantly higher (293±102 mL/min versus 228±71 mL/min, p=0.004) in controls than in patients. This was driven mainly by a difference in Repi (43±23 vs 83±41 WU, p=0.048), without significant differences in Rmicro. After adjustment for vessel-specific myocardial mass, hyperaemic Q was similar in the three vascular territories (5.9±1.9, 4.9±1.7, and 5.3±2.1 mL/min/g, p=0.44, in the LAD, left circumflex and right coronary artery, respectively).

conclusionsThe present report provides reference values of absolute coronary hyperaemic Q and R. Q was homogeneously distributed in the three major myocardial territories but the large ranges of observed hyperaemic values of flow and of microvascular resistance preclude their clinical use for inter-patient comparison.

Indexed as

Coronary VesselsThermodilutionCoronary AngiographyCoronary CirculationHumansMicrocirculationReference ValuesVascular Resistance

Identifiers

PMID33016881
PMCPMC9724861
OpenAlexW3090169960

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.