Key result
Transthoracic and transesophageal echocardiography showed the best agreement with implanted aortic valve size (κ= 0.88 and 0.76), whereas computed tomography correlated poorly.
Why the study?
Which imaging technique provides the best agreement for measuring the aortic annulus and predicting the implanted prosthesis size in patients undergoing TAVI?
Observational (n=40)
Which imaging technique provides the best agreement for measuring the aortic annulus and predicting the implanted prosthesis size in patients undergoing TAVI?
Effect estimate: κ= 0.88 and 0.76
p-value: p=<0.001
Transthoracic and transesophageal echocardiography provide the best agreement for estimating aortic annulus size and predicting the implanted valve size in patients undergoing TAVI.
Echocardiography may guide TAVI sizing better than CT in this cohort; leaves open prospective validation before practice change.
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Rubio et al. (2011) conducted an observational in Severe aortic stenosis (n=40). Cardiac imaging techniques (TTE, TEE, CT, angiography) vs. Each other was evaluated on Agreement between estimated aortic annulus size and implanted aortic valve size (κ= 0.88 and 0.76, p=<0.001). Transthoracic and transesophageal echocardiography showed the best agreement with implanted aortic valve size (κ= 0.88 and 0.76), whereas computed tomography correlated poorly.
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