Evidence map›Paper›PMID 31327062›Full record

ArticleJournal of artificial organs : the official journal of the Japanese Society for Artificial Organs2019

Mathematical evaluation of cardiac beat synchronization control used for a rotary blood pump.

Daisuke Ogawa, Shinji Kobayashi, Kenji Yamazaki, Tadashi Motomura, Takashi Nishimura, Junichi Shimamura, Tomonori Tsukiya, Toshihide Mizuno, Yoshiaki Takewa, Eisuke Tatsumi

Abstract read
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In one paragraph

Article in Journal of artificial organs : the official journal of the Japanese Society for Artificial Organs, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

2 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Big Data in cardiac surgery: real world and perspectives.Journal of cardiothoracic surgery · 2022
    Pooled it
  2. 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

10 authors.

Daisuke OgawaSun Medical Technology Research Corp., 2990 Shiga, Suwa-city, Nagano, 392-0012, Japan. d-ogawa@evaheart.co.jp.ORCID http://orcid.org/0000-0003-3520-4313
Shinji KobayashiSun Medical Technology Research Corp., 2990 Shiga, Suwa-city, Nagano, 392-0012, Japan.
Kenji YamazakiHokkaido Cardiovascular Hospital, 13 Chome-1-30 Minami 27 Jonishi, Chuo Ward, Sapporo, Hokkaido, Japan.
Tadashi MotomuraEvaheart Inc., 6655 Travis ST, Suite 590, Houston, TX, USA.
Takashi NishimuraDepartment of Cardiac Surgery, Tokyo Metropolitan Geriatric Hospital, 35-2 Sakaecho, Itabashi, Tokyo, Japan.
Junichi ShimamuraDepartment of Artificial Organs, National Cerebral and Cardiovascular Center Research Institute, 5-7-1 Fujishiro-dai, Suita, Osaka, Japan.
Tomonori TsukiyaDepartment of Artificial Organs, National Cerebral and Cardiovascular Center Research Institute, 5-7-1 Fujishiro-dai, Suita, Osaka, Japan.
Toshihide MizunoDepartment of Artificial Organs, National Cerebral and Cardiovascular Center Research Institute, 5-7-1 Fujishiro-dai, Suita, Osaka, Japan.
Yoshiaki TakewaDepartment of Artificial Organs, National Cerebral and Cardiovascular Center Research Institute, 5-7-1 Fujishiro-dai, Suita, Osaka, Japan.
Eisuke TatsumiDepartment of Artificial Organs, National Cerebral and Cardiovascular Center Research Institute, 5-7-1 Fujishiro-dai, Suita, Osaka, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We studied a control method of rotary blood pumps (RBPs), which is called as the cardiac beat synchronization (CBS) system. Usually, RBPs operate at constant target rotational speed, meanwhile, the CBS system modulates target speed synchronizing with cardiac beat. We built a computer simulation method to evaluate the CBS system. This simulator acquires a mathematical model of a circulatory system including a RBP and can provide us the theoretical hemodynamics when our control method is applied. We compared theoretical results with experimental ones with the model focusing on both pulsatility and aortic valve (AV) opening interval enhanced by the CBS system. Our simulator could reproduce behavior of the circulatory system whether the RBP is connected or not. Comparison among no RBP, constant assist, systolic assist, and diastolic assist modes indicated that pulsatility is enhanced with systolic assist theoretically. While systolic assist decreased AV opening interval, diastolic assist made it longer than the ones in other control strategies.

Indexed as

Computer SimulationHeart-Assist DevicesModels, CardiovascularAortic ValveDiastoleHeart RateHumansPulsatile FlowSystolePulsatilityRotary blood pumpSimulationSynchronization with cardiac beat

Identifiers

PMID31327062

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.