Evidence map›Paper›PMID 31945201›Full record

Trial reportArtificial organs2020

Continuous LVAD monitoring reveals high suction rates in clinically stable outpatients.

Christoph Gross, Heinrich Schima, Thomas Schlöglhofer, Kamen Dimitrov, Martin Maw, Julia Riebandt, Dominik Wiedemann, Daniel Zimpfer, Francesco Moscato

Open access · hybridAbstract readClinical Trial
In one paragraph

Trial report in Artificial organs, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
2.7field-weighted citation impact, top 10% 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

19 citing papers in PubMed, 47 citations in OpenAlex.

  1. Trial
  2. Article
  3. The impact of position changes of the inflow cannula in LVAD patients.Turk gogus kalp damar cerrahisi dergisi · 2026
    Article
  4. Management of Dialysis for Patients Receiving Mechanical Circulatory Support.Journal of the American Society of Nephrology : JASN · 2026
    Review
  5. Article
  6. A scenario of left ventricular assist device suction mimicking external compression.Indian journal of thoracic and cardiovascular surgery · 2025
    Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. AnFrontiers in physiology · 2023
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Review
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

9 authors at 2 institutions in 1 country.

Christoph GrossCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria.ORCID https://orcid.org/0000-0003-1583-5783
Heinrich SchimaCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria.
Thomas SchlöglhoferCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria.ORCID https://orcid.org/0000-0003-4354-4860
Kamen DimitrovDivision of Cardiac Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria.
Martin MawCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria.
Julia RiebandtDivision of Cardiac Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria.
Dominik WiedemannDivision of Cardiac Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria.
Daniel ZimpferDivision of Cardiac Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria.
Francesco MoscatoCenter for Medical Physics and Biomedical Engineering, Medical University of Vienna, Vienna, Austria.ORCID https://orcid.org/0000-0003-0279-6615
Ludwig Boltzmann Institute for Age Research · ATMedical University of Vienna · AT

Funding

Austrian Science Fund KLI357
6 · The paper itself

Abstract

Suction of the left ventricle can lead to potentially life-threatening events in left ventricular assist device (LVAD) patients. With the resolution of currently available clinical LVAD monitoring healthcare professionals are unable to evaluate patients' suction occurrences in detail. This study investigates occurrences and durations of suction events and their associations with tachycardia in stable outpatients. Continuous high-resolution LVAD data from HVAD patients were analyzed in the early outpatient period for 15 days. A validated suction detection from LVAD signals was used. Suction events were evaluated as suction rates, bursts of consecutive suction beats, and clusters of suction beats. The occurrence of tachycardia was analyzed before, during, and after suction clusters. Furthermore, blood work, implant strategy, LVAD speed setting, inflow cannula position, left ventricular diameters, and adverse events were evaluated in these patients. LVAD data of 10 patients was analyzed starting at 78 ± 22 postoperative days. Individuals' highest suction rates per hour resulted in a median of 11% (range 3%-61%). Bursts categorized as consecutive suction beats with n = 2, n = 3-5, n = 6-15, and n > 15 beats were homogenously distributed with 10.3 ± 0.8% among all suction beats. Larger suction bursts were followed by shorter suction-free periods. Tachycardia during suction occurred in 12% of all suction clusters. Significant differences in clinical parameters between individuals with high and low suction rates were only observed in left ventricular end-diastolic and end-systolic diameters (P < .02). Continuous high-resolution LVAD monitoring sheds light on outpatient suction occurrences. Interindividual and intraindividual characteristics of longitudinal suction rates were observed. Longer suction clusters have higher probabilities of tachycardia within the cluster and more severe types of suction waveforms. This work shows the necessity of improved LVAD monitoring and the implementation of an LVAD speed control to reduce suction rates and their concomitant burden on the cardiovascular system.

Indexed as

Hemodynamic MonitoringAgedEchocardiography, Doppler, ColorEchocardiography, Doppler, PulsedFemaleHeart-Assist DevicesHeart FailureHeart VentriclesHumansMaleMiddle AgedModels, CardiovascularPostoperative ComplicationsSuctionVentricular Function, Leftleft ventricular assist devicemechanical circulatory supportoutpatient monitoringoverpumpingsuctiontachycardia

Identifiers

PMID31945201
PMCPMC7318142
OpenAlexW2999826461

What OpenQuestion holds

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LicenceCC BY
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.