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. 2016 Sep 29;6(9):e014327.
doi: 10.1136/bmjopen-2016-014327.

Patient values and preferences on transcatheter or surgical aortic valve replacement therapy for aortic stenosis: a systematic review

Lyubov Lytvyn  1 , Gordon H Guyatt  2 , Veena Manja  3 , Reed A Siemieniuk  4 , Yuan Zhang  2 , Thomas Agoritsas  5 , Per O Vandvik  6
Affiliations

Patient values and preferences on transcatheter or surgical aortic valve replacement therapy for aortic stenosis: a systematic review

Lyubov Lytvyn et al. BMJ Open. .

Abstract

Objective: To investigate patients' values and preferences regarding aortic valve replacement therapy for aortic stenosis.

Setting: Studies published after transcatheter aortic valve insertion (TAVI) became available (2002).

Participants: Adults with aortic stenosis who are considering or have had valve replacement, either TAVI or via surgery (surgical aortic valve replacement, SAVR).

Outcome measures: We sought quantitative measurements, or qualitative descriptions, of values and preferences. When reported, we examined correlations between preferences and objective (eg, ejection fraction) or subjective (eg, health-related quality of life) measures of health.

Results: We reviewed 1348 unique citations, of which 2 studies proved eligible. One study of patients with severe aortic stenosis used a standard gamble study to ascertain that the median hypothetical mortality risk patients were willing to tolerate to achieve full health was 25% (IQR 25-50%). However, there was considerable variability; for mortality risk levels defined by current guidelines, 130 participants (30%) were willing to accept low-to-intermediate risk (≤8%), 224 (51%) high risk (>8-50%) and 85 (19%) a risk that guidelines would consider prohibitive (>50%). Study authors did not, however, assess participants' understanding of the exercise, resulting in a potential risk of bias. A second qualitative study of 15 patients identified the following factors that influence patients to undergo assessment for TAVI: symptom burden; expectations; information support; logistical barriers; facilitators; obligations and responsibilities. The study was limited by serious risk of bias due to authors' conflict of interest (5/9 authors industry-funded).

Conclusions: Current evidence on patient values and preferences of adults with aortic stenosis is very limited, and no studies have enrolled patients deciding between TAVI and SAVR. On the basis of the data available, there is evidence of variability in individual values and preferences, highlighting the importance of well-informed and shared decision-making with patients facing this decision.

Trial registration number: PROSPERO CRD42016041907.

Keywords: GRADE; Shared decision making; TAVI; aortic stenosis.

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Figure 1
PRISMA flow diagram.
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