Review for 10.1186/s12876-022-02375-x (2022)

Reviewer’s report
Title: 
Hypercontractile esophagus responsive to potassium-competitive acid
blockers: A case report
Version: 
0 
Date: 
09 May 2022
Reviewer's report:
Interesting case worthy of publication to stimulate further investigation into the
use of vonoprazan for GERD-related or induced hypermotility disorders. 
Thank you to the authers.
I recommend publication after the following corrections:
1. Title is not sufficiently descriptive and may struggle to attract readers. The
highlight of this article is how vonoprazan reversed acid reflux and subsequent
esophageal hypercontractility. This should be reflected in the title somehow.
2. Can the authors explain when exactly follow-up HRM and ph-monitoring
were performed after stopping vonoprazan? Was it performed immediately after
stopping or a few weeks later?
3. The article flips between the use of the terms "jackhammer" and
"hypercontractile." One term should be picked and adhered to throughout the
article.
4. I don't believe it is common to include EUS in the work up of motility
disorders (page 8; line 13).
5. Several acronyms are introduced and re-introduced. The authors should
present the acronyms at first and then use the acronyms for consistency
throughout the articles instead of switching back at times to full words.
6. There are a few grammatical errors. Please see annotated manuscript.
Suggested corrections are provided.
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Is the study design appropriate to answer the research question (including the use
of appropriate controls), and are the conclusions supported by the evidence
presented?
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from apparent manipulation?
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