Jamal N Khan, Timothy Griffiths, Tamseel Fatima, Leah Michael, Andreea Mihai, Zeeshan Mustafa, Kully Sandhu, Robert Butler, Simon Duckett, and Grant Heatlie
Physiologist-led stress echocardiography (PLSE) services provide potential for expansion of SE services and increased productivity for cardiologists. There are however no published data on the feasibility of PLSE. We sought to assess the feasibility, safety and robustness of PLSE and cardiologist-led stress echocardiography (CLSE) for coronary artery disease (CAD) assessment.
Retrospective analysis of 898 patients undergoing PLSE or CLSE for CAD assessment using exercise or dobutamine stress over 24 months. PLSE involved 2 cardiac physiologists (exercise) or 1 physiologist plus 1 cardiac nurse (dobutamine). A cardiology registrar was present in the echocardiography department during PLSE in case of medical complications. CLSE involved 1 physiologist and 1 trainee cardiologist who analysed the study and reviewed findings with an imaging cardiologist. Sixteen-segment wall motion scoring (WMS, WMSI) analysis was performed. Feasibility (stressor, image quality, proportion of completed studies, agreement with imaging cardiologist analysis) and safety (complication rate) were compared for PLSE and CLSE.
The majority of studies were CLSE (56.2%) and used dobutamine (68.7%). PLSE more commonly used exercise (69.2%). Overall, 96% of studies were successfully completed (>14 diagnostic segments in 98%, P = 0.899 PLSE vs CLSE). Commencement of PLSE was associated with an increase in annual SE’s performed for CAD assessment. Complication rates were comparably very low for PLSE and CLSE (0.8% vs 1.8%, P = 0.187). There was excellent agreement between PLSE and CLSE WMS interpretation of 480 myocardial segments at rest (κ = 0.87) and stress (κ = 0.70) and WMSI (ICCs and Pearson’s r >0.90, zero Bland–Altman mean bias).
This to our knowledge is the first study of the feasibility of PLSE. PLSE performed by well-trained physiologists is feasible and safe in contemporary practice. PLSE and CLSE interpretation of stress echocardiography for CAD agree very closely.
Sadie Bennett, Chun Wai Wong, Timothy Griffiths, Martin Stout, Jamal Nasir Khan, Simon Duckett, Grant Heatlie, and Chun Shing Kwok
Echocardiographic evaluation of left ventricular ejection fraction (LVEF) is used in the risk stratification of patients with an acute myocardial infarction (AMI). However, the prognostic value of the Tei index, an alternative measure of global cardiac function, in AMI patients is not well established.
We conducted a systematic review, using MEDLINE and EMBASE, to evaluate the prognostic value of the Tei index in predicting adverse outcomes in patients presenting with AMI. The data was collected and narratively synthesised.
A total of 16 studies were including in this review with 2886 participants (mean age was 60 years from 14 studies, the proportion of male patients 69.8% from 14 studies). Patient follow-up duration ranged from during the AMI hospitalisation stay to 57.8 months. Tei index showed a significant association with heart failure episodes, reinfarction, death and left ventricular thrombus formation in 14 out of the 16 studies. However, in one of these studies, Tei index was only significantly predictive of cardiac events in patients where LVEF was <40%. In two further studies, Tei index was not associated with predicting adverse outcomes once LVEF, left ventricular end-systolic volume index and left ventricular early filling time was taken into consideration. In the two remaining studies, there was no prognostic value of Tei index in relation to patient outcomes.
Tei index may be an important prognostic marker in AMI patients, however, more studies are needed to better understand when it should be used routinely within clinical practice.
Vishal Sharma, Martin Stout, Keith Pearce, Allan L Klein, Maryam Alsharqi, Petros Nihoyannopoulos, Jamal Nasir Khan, Timothy Griffiths, Kully Sandhu, Sinead Cabezon, Chun Shing Kwok, Shanat Baig, Tamara Naneishvili, Vetton Chee Kay Lee, Arron Pasricha, Emily Robins, Prathap Kanagala, Tamseel Fatima, Andreea Mihai, Robert Butler, Simon Duckett, Grant Heatlie, Haotian Gu, Phil Chowienczyk, Linda Arnold, Sean Coffey, Margaret Loudon, Jo Wilson, Andrew Kennedy, Saul G Myerson, Bernard Prendergast, Alice M Jackson, Vera Lennie, Peter Lee Luke, Christopher James Eggett, Loakim Spyridopoulos, Timothy Simon Irvine, Nashwah Ismail, Anita Macnab, Caroline Bleakley, Mehdi Eskandari, Omar Aldalati, Almira Whittaker, Marilou Huang, Mark J Monaghan, Thomas J Turner, Conor Steele, Anna Barton, Alan C Cameron, Sonecki Piotr, Phang Gyee Vuei, Christos Voukalis, Hwee Phen Teh, Stavros Apostolakis, Chih Wong, Matthew M Y Lee, Nicolas E R Goodfield, Emma Lane, David Slessor, Richard Crawley, Theodoros Ntoskas, Farhanda Ahmad, Paul Woodmansey, Andrew J Fletcher, Shaun Robinson, Bushra S Rana, Liam Batchelor, Brogan McAdam, Caroline J Coats, Louise C Mayall, Niall G Campbell, and Hannah Garnett