Evidence map›Paper›PMID 27734145›Full record

ArticleHeart and vessels2017

Relationships of left ventricular strain and strain rate to wall stress and their afterload dependency.

Daisuke Murai, Satoshi Yamada, Taichi Hayashi, Kazunori Okada, Hisao Nishino, Masahiro Nakabachi, Shinobu Yokoyama, Ayumu Abe, Ayako Ichikawa, Kota Ono and 4 more

Abstract read
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Article in Heart and vessels, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
–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

23 citing papers in PubMed.

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  9. Comparison of two ellipsoidal models for the estimation of left ventricular end-systolic stress in patients with significant coronary artery disease.Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2023
    Article
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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

14 authors.

Daisuke MuraiDepartment of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan.
Satoshi YamadaDepartment of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan. syamada@med.hokudai.ac.jp.
Taichi HayashiDepartment of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan.
Kazunori OkadaFaculty of Health Sciences, Hokkaido University, Sapporo, Japan.
Hisao NishinoDivision of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan.
Masahiro NakabachiDivision of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan.
Shinobu YokoyamaDivision of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan.
Ayumu AbeDivision of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan.
Ayako IchikawaDivision of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Sapporo, Japan.
Kota OnoClinical Research and Medical Innovation Center, Hokkaido University Hospital, Sapporo, Japan.
Sanae KagaFaculty of Health Sciences, Hokkaido University, Sapporo, Japan.
Hiroyuki IwanoDepartment of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan.
Taisei MikamiFaculty of Health Sciences, Hokkaido University, Sapporo, Japan.
Hiroyuki TsutsuiDepartment of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine, Kita-15, Nishi-7, Kita-ku, Sapporo, 060-8638, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Whether and how left ventricular (LV) strain and strain rate correlate with wall stress is not known. Furthermore, it is not determined whether strain or strain rate is less dependent on the afterload. In 41 healthy young adults, LV global peak strain and systolic peak strain rate in the longitudinal direction (LS and LSR, respectively) and circumferential direction (CS and CSR, respectively) were measured layer-specifically using speckle tracking echocardiography (STE) before and during a handgrip exercise. Among all the points before and during the exercise, all the STE parameters significantly correlated linearly with wall stress (LS: r = -0.53, p < 0.01, LSR: r = -0.28, p < 0.05, CS in the inner layer: r = -0.72, p < 0.01, CSR in the inner layer: r = -0.47, p < 0.01). Strain more strongly correlated with wall stress than strain rate (r = -0.53 for LS vs. r = -0.28 for LSR, p < 0.05; r = -0.72 for CS vs. r = -0.47 for CSR in the inner layer, p < 0.05), whereas the interobserver variability was similar between strain and strain rate (longitudinal 6.2 vs. 5.2 %, inner circumferential 4.8 vs. 4.7 %, mid-circumferential 7.9 vs. 6.9 %, outer circumferential 10.4 vs. 9.7 %), indicating that the differences in correlation coefficients reflect those in afterload dependency. It was thus concluded that LV strain and strain rate linearly and inversely correlated with wall stress in the longitudinal and circumferential directions, and strain more strongly depended on afterload than did strain rate. Myocardial shortening should be evaluated based on the relationships between these parameters and wall stress.

Indexed as

AdultEchocardiographyFemaleHealthy VolunteersHeart VentriclesHumansMaleMyocardial ContractionSystoleVentricular Dysfunction, LeftVentricular Function, LeftYoung AdultAfterloadSpeckle tracking echocardiographyStrainStrain rateWall stress

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Read underepoch 390

Registered trials

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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.