ORCID Profile
0000-0003-4480-2542
Current Organisations
Derwent Valley Medical Centre
,
University of Tasmania Menzies Institute for Medical Research
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Publisher: Elsevier BV
Date: 03-2017
DOI: 10.1016/J.IJCARD.2016.12.043
Abstract: The appropriateness of repeat transthoracic echocardiography (TTE) for stable heart failure (HF) is based on timing of the follow-up examination, but this lacks scientific support. We sought the association of routine follow-up TTE on survival and readmission in stable HF. Patients with HF were selected from consecutive HF admissions from 2008 to 2012. Groups were ided into: no follow-up TTE routine <1year with no change in status ("rarely appropriate"), ≥1year follow-up with no change in status ("maybe appropriate") and TTE due to change in clinical status ("appropriate"). Survival analysis was performed for the combined endpoint of HF readmission and death, and a separate analysis was performed for HF readmission, with death as a competing risk. Of 550 HF patients, 141 had a follow-up TTE, including 41 (29%) within 1year. The event-free time in years was similar between no TTE (1.10years [95%CI: 0.69, 1.49], routine TTE 1year (2.45years [95% CI: 1.37, 5.78]) all were greater than symptomatic patients (0.09years [95% CI: 0.02, 1.80]). HF readmission was independently associated with statins, renal disease, coronary angiography and NYHA class, but not follow-up TTE timing. There were no differences in the cumulative incidence for death between groups. There were no differences in change in management in routine TTE <1year and ≥1year. The distinction of appropriateness of routine repeat TTE in stable HF patients, based on testing <1 or ≥1year after index admission appears unjustified.
Publisher: Elsevier BV
Date: 11-2016
DOI: 10.1016/J.AMJCARD.2016.08.027
Abstract: Adoption of appropriate use criteria has not had a major impact on the frequency of "rarely appropriate" tests, with the rarely appropriate tests rate remaining at ∼20% in most institutions. We sought whether access to hand-held ultrasound (HHU) could be an alternative means of reducing rarely appropriate requests. We compared 2 approaches to rarely appropriate requests "standard transthoracic echocardiography" (SE) as requested (control) and HHU as a gatekeeper (HHU). Patients were followed up for 6 months and assessed for end points including time until scan, repeat echocardiography/cost of either strategy, new major pathology, and change in management. The most common rarely appropriate requests in both groups were assessment of infective endocarditis without positive blood cultures and precordial murmur evaluation in absence of any other signs or symptoms of cardiovascular disease. The groups had comparable age, gender, requesting physician, and inpatient versus outpatient distribution. HHU led to a 59% reduction in rarely appropriate requests requiring SE. HHU significantly reduced time to decision for inpatients (0 [interquartile range 0, 1] vs 2 days [interquartile range 1, 4], p <0.001) and total cost of echocardiography (109 ± 86 vs 181 ± 37 USD, p <0.001). New major pathology was identified in 29% and 23% of HHU and SE, respectively. There was no difference with respect to change in management. In conclusion, HHU can be an effective gatekeeper to SE for rarely appropriate echocardiograms, reducing time to echocardiography and cost while satisfying the referring physician and avoiding repeat requests for SE. HHU provides a safety net that identifies potential important findings in rarely appropriate requests.
Publisher: BMJ
Date: 10-2016
Publisher: BMJ
Date: 23-12-2013
Publisher: Elsevier BV
Date: 03-2015
DOI: 10.1016/J.JACC.2014.11.057
Abstract: Appropriate use criteria (AUC) for cardiac imaging have been available for almost 10 years. The extent to which there has been a reported improvement in appropriate use is undefined. This study systematically reviewed published evidence to identify whether the promulgation of AUC has led to an improvement in the proportion of appropriate cardiac imaging requests. Electronic databases were systematically searched for English-language papers related to AUC and cardiovascular imaging. We found 59 reports involving 103,567 tests that were published from 2000 to 2012. The rate of appropriate testing over time was analyzed in a meta-regression. New AUC were associated with apparent improvements in appropriateness for transthoracic echocardiography (TTE) (80% [95% confidence interval (CI): 0.75 to 0.84] vs. 85% [95% CI: 0.81 to 0.89]), transesophageal echocardiography (TEE) (89% [95% CI: 0.81 to 0.94] vs. 95% [95% CI: 0.93 to 0.96]) and computed tomography angiography (CTA) (37% [95% CI: 0.21 to 0.55] vs. 55% [95% CI: 0.44 to 0.65]) but not stress echocardiography (53% [95% CI: 0.45 to 0.61] vs. 52% [95% CI: 0.42 to 0.61]) or single-photon emission computed tomography (72% [95% CI: 0.66 to 0.77] vs. 68% [95% CI: 0.60 to 0.74]). Although there were no correlations between the proportion of appropriate TTEs and published year (p = 0.36) for 2007 AUC, there was a positive correlation between proportion of appropriateness and the year of publication (p = 0.01) for 2011 AUC. There was a significant decrease in the proportion of appropriateness over time using the 2007 TEE AUC (p = 0.03) and 2006 CT AUC (p = 0.02). There were no meaningful associations between appropriateness and publication year for stress echocardiography, CTA, or single-photon emission computed tomography. Rates of reported appropriate use in imaging show improvements for TTE and CTA but not for stress imaging and TEE. The observed reductions in imaging studies are not matched by reported rates of appropriate use.
Location: Australia
No related grants have been discovered for Ricardo Fonseca.