Wolf-Parkinson-White alternans diagnosis unveiled by adenosine stress test

2010 ◽  
Vol 43 (2) ◽  
pp. 144-145 ◽  
Author(s):  
Rami N. Khouzam
Keyword(s):  
Stress Test ◽  
Adenosine Stress

Feasibility and prognostic value of adenosine stress perfusion cardiovascular magnetic resonance in patient with implantable device

2021 ◽  
Vol 22 (Supplement_2) ◽  
Author(s):  
A Pavon ◽  
AP Porretta ◽  
D Arangalage ◽  
T Rutz ◽  
S Hugelshofer ◽  
...  
Keyword(s):  
Image Quality ◽  
Prognostic Value ◽  
Stress Test ◽  
Implantable Device ◽  
Adenosine Stress ◽  
Stress Perfusion ◽  
Long Term Follow Up ◽  
Stress Cmr

Abstract Funding Acknowledgements Type of funding sources: None. Background stress CMR has a limited use in patients with implantable device, in order to the possible artefacts due to the metallic component and to the risk of adenosine interaction with cardiac pacing. The aim of the study was to assess the global feasibility and to assess the prognostic value of stress perfusion CMR in patients with implantable device. Materials and Methods we conducted a retrospective single-center longitudinal analysis of consecutive patients with an implantable device referred for stress CMR, performed using a 1.5 Tesla unit (Siemens Healthcare,MAGNETOM Aera, Erlangen-Germany). Protocol was adapted according to current guidelines. Cardiac follow-up [6 months to 7 years] was obtained by medical records of direct contact with patient’s cardiologist referral.  Results 44 patients were enrolled. 34 patients needed a continuous pacing during adenosine stress, that was settled in DOO in 14 (32%) and in VOO in 20 (45%). Device integrity was not compromised by CMR and not competitive atrial or ventricular stimulation was observed during examination. Image quality was good in 95% cases. 26% cases had a perfusion deficit corresponding to a previous scar, while 12% of patients had a positive stress test. All of them needed continuous pacing during stress test and underwent to a coronary angiography who confirmed the coronary stenosis.  In patients without inducible ischemia 2 patients experienced a Non-ST-elevation Myocardial Infarction after 6 and 2 years while no other cardiac symptoms or cardiac hospitalisation was remarkable during follow up. Conclusion adenosine stress CMR in patient who are pacemaker dependent during scanner is feasible, with an overall good image quality, proving an excellent diagnostic and prognostic value in a long term follow up even. Adenosine administration is safe and no the magnetic field interference with the correct functioning of the device have been shown in short or long term follow-up.

Coronary vasospasm during an adenosine stress test

2006 ◽  
Vol 113 (3) ◽  
pp. E84-E86 ◽  
Author(s):  
Giorgio Faganello ◽  
Mark Belham
Keyword(s):  
Stress Test ◽  
Coronary Vasospasm ◽  
Adenosine Stress

scholarly journals Perfusion Computed Tomography for the Assessment of Myocardial Viability — a Case Series

2016 ◽  
Vol 1 (1) ◽  
pp. 83-87
Author(s):  
Mirabela Morariu ◽  
Diana Opincariu ◽  
Alexandra Stănescu
Keyword(s):  
Computed Tomography ◽  
Coronary Angiography ◽  
Myocardial Perfusion ◽  
Myocardial Viability ◽  
Stress Test ◽  
Left Ventricular ◽  
Ct Coronary Angiography ◽  
Viable Myocardium ◽  
Adenosine Stress ◽  
Emission Computed Tomography

Abstract Myocardial viability plays an important role in preventing the development of left ventricular remodeling following an acute myocardial infarction. A preserved viability in the infarcted area has been demonstrated to be associated with a lower amplitude of the remodeling process, while the extent of the non-viable myocardium is directly correlated with the amplitude of the remodeling process. A number of methods are currently in use for the quantification of the viable myocardium, and some of them are based on the estimation of myocardial perfusion during pharmacologic stress. 64-slice Multi-detector Computed Tomography (MDCT) during vasodilator stress test, associated with CT Coronary Angiography (CCTA) has a high diagnostic accuracy in evaluating myocardial perfusion. In this article, we present a sequence of 3 clinical cases that presented with symptoms of myocardial ischemia, who underwent 64-slice MDCT imaging at rest and during adenosine stress test, in order to assess the extent of the hypoperfused myocardial areas. Coronary artery anatomy and the Coronary Calcium Score was assessed for all 3 patients by performing CT Coronary Angiography. The combination of CT Angiography and adenosine stress CT myocardial perfusion imaging can accurately detect atherosclerosic lesions that cause perfusion abnormalities, compared with the combination of invasive angiography and single-photon emission computed tomography (SPECT).

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