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dc.contributor.authorTakahashi, T.
dc.contributor.authorKumamaru, M.
dc.contributor.authorJenkins, Sue
dc.contributor.authorSaitoh, M.
dc.contributor.authorMorisawa, T.
dc.contributor.authorMatsuda, H.
dc.date.accessioned2017-01-30T15:37:35Z
dc.date.available2017-01-30T15:37:35Z
dc.date.created2015-12-10T20:00:20Z
dc.date.issued2015
dc.identifier.citationTakahashi, T. and Kumamaru, M. and Jenkins, S. and Saitoh, M. and Morisawa, T. and Matsuda, H. 2015. In-patient step count predicts re-hospitalization after cardiac surgery. Journal of Cardiology. 66 (4): pp. 286-291.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/48129
dc.identifier.doi10.1016/j.jjcc.2015.01.006
dc.description.abstract

Background Clinical significance of in-patient step count after cardiac surgery remains unknown. The aim of this study was to determine whether the number of steps walked during the in-patient stay after cardiac surgery predicts the risk of cardiac re-hospitalization in the following year. Methods One hundred and thirty-three patients who underwent cardiac surgery were included in this study. The number of steps was assessed using a triaxial accelerometer. One year after surgery, patients completed a postal survey to determine their health condition and occurrence of cardiac re-hospitalization. Results The mean number of steps walked during the last three in-patient days was 2460 ± 1549 (mean ± standard deviation). Of the 133 patients, there were 16 cases (12.0%) of cardiac re-hospitalization during the 1-year follow-up period. The average step count before discharge was significantly lower in the 16 patients who were re-hospitalized for cardiac causes (1297 ± 1232 versus 2620 ± 1524, p < 0.01). The cut-off value that predicted the occurrence of cardiac re-hospitalization on the receiver operating curve was 1308 steps (area under the curve: 0.783, p < 0.001, sensitivity: 0.814, specificity: 0.733). Cox proportional hazards analysis revealed that the strongest predictor of cardiac re-hospitalization was a low step count prior to discharge (=1308 steps, hazard ratio: 7.58; 95% confidence interval: 2.04–28.22). Conclusions In-patient step count appears to be a risk factor for cardiac re-hospitalization within the first year following cardiac surgery. Further studies are needed to clarify the clinical significance of step count both preoperatively and following discharge.

dc.titleIn-patient step count predicts re-hospitalization after cardiac surgery
dc.typeJournal Article
dcterms.source.volume66
dcterms.source.number4
dcterms.source.startPage286
dcterms.source.endPage291
dcterms.source.issn0914-5087
dcterms.source.titleJournal of Cardiology
curtin.departmentSchool of Physiotherapy and Exercise Science
curtin.accessStatusOpen access via publisher


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