Diagnostic accuracy of low-dose dobutamine echocardiography in predicting post-revascularisation recovery of function in patients with chronic coronary artery disease: Relationship to thallium-201 uptake
Diagnostic accuracy of low-dose dobutamine echocardiography in predicting post-revascularisation recovery of function in patients with chronic coronary artery disease: Relationship to thallium-201 uptake(371 views) Pace L, Filardi PP, Cuocolo A, Prastaro M, Acampa W, Dellegrottaglie S, Storto G, Della Morte AM, Piscione F, Chiariello M, Salvatore M
Keywords: Chronic Coronary Artery Disease, Low-Dose Dobutamine Echocardiography, Thallium-201, Thallium 201, Accuracy, Adult, Aged, Akinesia, Article, Clinical Trial, Controlled Clinical Trial, Controlled Study, Convalescence, Disease Severity, Drug Infusion, Drug Uptake, Female, Follow Up, Heart Muscle Contractility, Heart Muscle Revascularization, Heart Scintiscanning, Human, Image Analysis, Major Clinical Study, Prediction, Sensitivity And Specificity, Single Photon Emission Computer Tomography, Two Dimensional Echocardiography, Coronary Disease, Stress, Middle Aged, Myocardial Contraction, Myocardial Revascularization, Predictive Value Of Tests, Recovery Of Function, Thallium Radioisotopes, Emission-Computed, Single-Photon,
Affiliations: *** IBB - CNR ***
Dipartimento di Scienze Biomorfologiche e Funzionali, Università Federico II, Napoli, Italy
Centro C.N.R. Medicina Nucleare, Napoli, Italy
Dipartimento di Medicina Clinica, Scienze Cardiovascolari Ed Immunologiche, Università Federico II, Napoli, Italy
IRCCS Neuromed, Pozzilli, Italy
Trav. Priv. Sanseverino 5/A, 80128, Napoli, Italy
Centro C. N. R. Medicina Nucleare, Napoli, Italy
References: Not available.
Diagnostic accuracy of low-dose dobutamine echocardiography in predicting post-revascularisation recovery of function in patients with chronic coronary artery disease: Relationship to thallium-201 uptake
It is known that contractile reserve may be blunted if perfusion and coronary flow reserve are reduced. Thus, it is conceivable that the predictive accuracy of dobutamine echocardiography may differ according to perfusion tracer uptake. The aim of this study was therefore to assess the relationship between the level of thallium-201 uptake and the accuracy of dobutamine echocardiography in identifying reversible dysfunction. Sixty-nine patients (age 59±8 years, ejection fraction 40%±11%) with chronic coronary artery disease scheduled for coronary revascularisation were studied. All patients underwent rest 201Tl single-photon emission tomography and two-dimensional echocardiography at rest and during low-dose dobutamine infusion on the same day before revascularisation and repeated echocardiography at least 30 days thereafter. At follow-up, recovery of function was observed in 49% of 339 dysfunctional segments. The percentage of segments with post-revascularisation recovery of function and the percentage with contractile reserve increased in parallel with 201Tl uptake both in the total group of segments (χ2=35.5, P<0.0001 and χ2=35.9, P<0.0001, respectively) and among the 183 akinetic segments (χ2=44.4, P<0.0001 and χ2=14.6, P<0.05, respectively). The dysfunctional segments were divided into three groups according to 201Tl uptake: (a) uptake <65%, (b) uptake between 65% and 79%, (c) uptake >80%. The positive predictive value increased significantly with the level of 201Tl uptake, and was suboptimal (46%) in akinetic segments with severely reduced 201Tl uptake. The negative predictive value decreased significantly with 201Tl uptake, and it was less than suboptimal (29%) in akinetic segments with normal tracer uptake. Sensitivity was lower in the subset of akinetic segments (42%-63%) than in all dyssynergic segments (63%-76%), whereas specificity was very high in akinetic segments (80%-84%). It is concluded that the accuracy of low-dose dobutamine echocardiography in predicting reversibility of regional dysfunction varies considerably according to 201Tl uptake at rest and to the severity of regional dysfunction.
Diagnostic accuracy of low-dose dobutamine echocardiography in predicting post-revascularisation recovery of function in patients with chronic coronary artery disease: Relationship to thallium-201 uptake
Diagnostic accuracy of low-dose dobutamine echocardiography in predicting post-revascularisation recovery of function in patients with chronic coronary artery disease: Relationship to thallium-201 uptake
Cusanno F, Cisbani E, Colilli S, Fratoni R, Garibaldi F, Giuliani F, Gricia M, Lucentini M, Magliozzi ML, Santarivenere F, Torrioli S, Cinti MN, Pani R, Pellegrini R, Simonetti G, Schillaci O, Del Vecchio S, Salvatore M, Majewski S, De Vincentis G, Scopinaro F * Results of clinical trials with SPEM(356 views) Nucl Instrum Methods Phys Res Sect A, 2007 Feb 1; 497(1): 46-50. Impact Factor:3.221 ViewExport to BibTeXExport to EndNote
Hesse B, Tagil K, Cuocolo A, Anagnostopoulos C, Bardies M, Bax J, Bengel F, Busemann Sokole E, Davies G, Dondi M, Edenbrandt L, Franken P, Kjaer A, Knuuti J, Lassmann M, Ljungberg M, Marcassa C, Marie PY, Mckiddie F, O'connor M, Prvuolovich E, Underwood R * 3. 0 T perfusion MR imaging(1039 views) Rivista Di Neuroradiologia (ISSN: 1120-9976), 2004; 17(6): 807-812. Impact Factor:0.023 ViewExport to BibTeXExport to EndNote