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Cardiopulmonary factors affecting 6-min walk distance in patients with idiopathic inflammatory myopathies

Overview of attention for article published in Rheumatology International, May 2018
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Title
Cardiopulmonary factors affecting 6-min walk distance in patients with idiopathic inflammatory myopathies
Published in
Rheumatology International, May 2018
DOI 10.1007/s00296-018-4050-0
Pubmed ID
Authors

Naoki Mugii, Fujiko Someya

Abstract

Idiopathic inflammatory myopathies involve skeletal muscles and can be associated with interstitial lung disease and/or heart dysfunction, which may reduce exercise capacity. We aimed to clarify cardiopulmonary factors affecting the 6-min walk distance in patients who were able to walk without leg pain or fatigue. Twenty-three patients with inactive adult idiopathic inflammatory myopathies, and 18 age- and gender-matched healthy controls were evaluated for hemodynamic responses using noninvasive impedance cardiography during the 6-min walk test. The patients were also examined by the pulmonary function test for forced vital capacity and diffusing capacity for carbon monoxide (DLCO), and by echocardiography for left ventricular ejection fraction and right ventricular systolic pressure. Interstitial lung disease was diagnosed in 19 patients using high-resolution computed tomography. There was no difference in 6-min walk distance or cardiac output after walking between the patients and healthy controls. However, stroke volume during the 6-min walk test was significantly lower in the patients than in healthy controls, suggesting malfunction in the heart. Moreover, the increased heart rate matched the cardiac output. Spearman's correlation analysis demonstrated a correlation between 6-min walk distance and stroke volume, cardiac output after walking and DLCO, but not left ventricular ejection fraction or right ventricular systolic pressure, as this study lacked the patients with pulmonary hypertension. In conclusion, impaired DLCO due to interstitial lung disease was suggested to be a fundamental parameter affecting exercise capacity, in addition to heart involvement, in patients with idiopathic inflammatory myopathies.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 15 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 15 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 9 60%
Unspecified 3 20%
Student > Master 1 7%
Researcher 1 7%
Other 1 7%
Other 0 0%
Readers by discipline Count As %
Nursing and Health Professions 5 33%
Unspecified 4 27%
Medicine and Dentistry 4 27%
Neuroscience 1 7%
Social Sciences 1 7%
Other 0 0%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 16 May 2018.
All research outputs
#11,513,056
of 12,953,360 outputs
Outputs from Rheumatology International
#1,073
of 1,237 outputs
Outputs of similar age
#236,047
of 271,120 outputs
Outputs of similar age from Rheumatology International
#23
of 28 outputs
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So far Altmetric has tracked 1,237 research outputs from this source. They receive a mean Attention Score of 3.8. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
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We're also able to compare this research output to 28 others from the same source and published within six weeks on either side of this one. This one is in the 1st percentile – i.e., 1% of its contemporaries scored the same or lower than it.