Reviewer ’s report  
 
Title:  Prevalence and risk factors for hypokalemia in patients scheduled for laparoscopic 
colorectal resection and its association with p ost-operative recovery  
 
Version: 1 Date: 13 Jul 2018 
 
Reviewer:  Stefano  Brignola  
 
Reviewer’s report:  
 
I find this article of clinical importance and well structured but there are a lot of typing errors in 
the text; please correct them:  
 
-at line 23 page 4 of introduction "inlcude inadeq uate" and "loss and".  
 
-at line 6 page 6 of materials and methods "November 11 2014 to October 20 2016"  
 
-at line 3 page 7 of statistical analysis "standard deviation"  
 
-at line 20 page 8  of the results "factor associated"  
 
-at line 42 page 8 of the results "of gastrointestinal"  
 
-at line 12 page 9 of the results "level prior"  
 
-at line 13 page 9 of the results "and post -operative"  
 
-at line 4 page 10  of the discussions"hypokalemia was"  
 
-at line 18 page 10 of the discussions "in patient"  
 
-at line 42 page 10  of  the discussions"specifically for"  
 
-at line 6 page 11  of the discussions"hypokalemia through"  
 
-at line 59 page 11  of the discussions"the time"  
 
-at line 31 page 12  of the discussions"that early"  
 
-at line 53 page 12  of the discussions"are several"  
 
Are the methods appropriate and well described?  
If not, please specify what is required in your comments to the authors.  
 
Yes 
Does the work include the necessary controls?  
If not, please specify which controls are required in your comments to the authors.  
 
Yes 
 
Are the conclusions drawn adequately supported by the data shown?  
If not, please explain in your comments to the authors.  
 
Yes 
 
Are you able to assess any statistics in the manuscript or would you recommend an 
additional statistical review?  
If an additional statistical review is recommended, please specify what aspects require further 
assessment in your comments to the editors.  
 
I am able to assess the statistics  
 
Quality of written English  
Please indicate the quality of language in the manuscript:  
 
Needs some language corrections before being published  
 
Declaration of competing interests  
Please complete a declaration of competing interests, considering the following questions:  
 
1. Have you in the past five years received reimbursements, fees, funding, or salary from an 
organisation that may in any way gain or lose financially from the publication of this 
manuscript, either now or in the future?  
 
2. Do you hold any stocks or shares in an organisation that may in any w ay gain or lose 
financially from the publication of this manuscript, either now or in the future?  
 
3. Do you hold or are you currently applying for any patents relating to the content of the 
manuscript?  
 
4. Have you received reimbursements, fees, funding, or salary from an organization that 
holds or has applied for patents relating to the content of the manuscript?  
 
5. Do you have any other financial competing interests?  
 
6. Do you have any non -financial competing interests in relation to this paper?  
 
If you can ans wer no to all of the above, write 'I declare that I have no competing interests' 
below. If your reply is yes to any, please give details below.  
 
I declare that I have no competing interests.  
I agree to the open peer review policy of the journal. I understand that my name will be included 
on my report to the authors and, if the manuscript is accepted for publication, my named report 
including any attachments I upload will be posted on the website along with the authors' 
responses. I agree for my repo rt to be made available under an Open Access Creative Commons 
CC-BY license ( http://creativecommons.org/licenses/by/4.0/ ). I understand that any comments 
which I do not wish to be included in my named report can be included as confidential comments 
to the editors, which will not be published.  
 
I agree to the open peer review policy of the journal  
Reviewer ’s report  
 
Title:  Prevalence and risk factors for hypokalemia in patients scheduled for laparoscopic 
colorectal resection and its association with p ost-operative recovery  
 
Version: 1 Date: 13 Jul 2018 
 
Reviewer:  Stefano  Brignola  
 
Reviewer’s report:  
 
I find this article of clinical importance and well structured but there are a lot of typing errors in 
the text; please correct them:  
 
-at line 23 page 4 of introduction "inlcude inadeq uate" and "loss and".  
 
-at line 6 page 6 of materials and methods "November 11 2014 to October 20 2016"  
 
-at line 3 page 7 of statistical analysis "standard deviation"  
 
-at line 20 page 8  of the results "factor associated"  
 
-at line 42 page 8 of the results "of gastrointestinal"  
 
-at line 12 page 9 of the results "level prior"  
 
-at line 13 page 9 of the results "and post -operative"  
 
-at line 4 page 10  of the discussions"hypokalemia was"  
 
-at line 18 page 10 of the discussions "in patient"  
 
-at line 42 page 10  of  the discussions"specifically for"  
 
-at line 6 page 11  of the discussions"hypokalemia through"  
 
-at line 59 page 11  of the discussions"the time"  
 
-at line 31 page 12  of the discussions"that early"  
 
-at line 53 page 12  of the discussions"are several"  
 
Are the methods appropriate and well described?  
If not, please specify what is required in your comments to the authors.  
 
Yes 
Does the work include the necessary controls?  
If not, please specify which controls are required in your comments to the authors.  
 
Yes 
 
Are the conclusions drawn adequately supported by the data shown?  
If not, please explain in your comments to the authors.  
 
Yes 
 
Are you able to assess any statistics in the manuscript or would you recommend an 
additional statistical review?  
If an additional statistical review is recommended, please specify what aspects require further 
assessment in your comments to the editors.  
 
I am able to assess the statistics  
 
Quality of written English  
Please indicate the quality of language in the manuscript:  
 
Needs some language corrections before being published  
 
Declaration of competing interests  
Please complete a declaration of competing interests, considering the following questions:  
 
1. Have you in the past five years received reimbursements, fees, funding, or salary from an 
organisation that may in any way gain or lose financially from the publication of this 
manuscript, either now or in the future?  
 
2. Do you hold any stocks or shares in an organisation that may in any w ay gain or lose 
financially from the publication of this manuscript, either now or in the future?  
 
3. Do you hold or are you currently applying for any patents relating to the content of the 
manuscript?  
 
4. Have you received reimbursements, fees, funding, or salary from an organization that 
holds or has applied for patents relating to the content of the manuscript?  
 
5. Do you have any other financial competing interests?  
 
6. Do you have any non -financial competing interests in relation to this paper?  
 
If you can ans wer no to all of the above, write 'I declare that I have no competing interests' 
below. If your reply is yes to any, please give details below.  
 
I declare that I have no competing interests.  
I agree to the open peer review policy of the journal. I understand that my name will be included 
on my report to the authors and, if the manuscript is accepted for publication, my named report 
including any attachments I upload will be posted on the website along with the authors' 
responses. I agree for my repo rt to be made available under an Open Access Creative Commons 
CC-BY license ( http://creativecommons.org/licenses/by/4.0/ ). I understand that any comments 
which I do not wish to be included in my named report can be included as confidential comments 
to the editors, which will not be published.  
 
I agree to the open peer review policy of the journal  
Please review this paper.
user
Reviewer ’s report  
 
Title:  Prevalence and risk factors for hypokalemia in patients scheduled for laparoscopic 
colorectal resection and its association with p ost-operative recovery  
 
Version: 1 Date: 13 Jul 2018 
 
Reviewer:  Stefano  Brignola  
 
Reviewer’s report:  
 
I find this article of clinical importance and well structured but there are a lot of typing errors in 
the text; please correct them:  
 
-at line 23 page 4 of introduction "inlcude inadeq uate" and "loss and".  
 
-at line 6 page 6 of materials and methods "November 11 2014 to October 20 2016"  
 
-at line 3 page 7 of statistical analysis "standard deviation"  
 
-at line 20 page 8  of the results "factor associated"  
 
-at line 42 page 8 of the results "of gastrointestinal"  
 
-at line 12 page 9 of the results "level prior"  
 
-at line 13 page 9 of the results "and post -operative"  
 
-at line 4 page 10  of the discussions"hypokalemia was"  
 
-at line 18 page 10 of the discussions "in patient"  
 
-at line 42 page 10  of  the discussions"specifically for"  
 
-at line 6 page 11  of the discussions"hypokalemia through"  
 
-at line 59 page 11  of the discussions"the time"  
 
-at line 31 page 12  of the discussions"that early"  
 
-at line 53 page 12  of the discussions"are several"  
 
Are the methods appropriate and well described?  
If not, please specify what is required in your comments to the authors.  
 
Yes 
Does the work include the necessary controls?  
If not, please specify which controls are required in your comments to the authors.  
 
Yes 
 
Are the conclusions drawn adequately supported by the data shown?  
If not, please explain in your comments to the authors.  
 
Yes 
 
Are you able to assess any statistics in the manuscript or would you recommend an 
additional statistical review?  
If an additional statistical review is recommended, please specify what aspects require further 
assessment in your comments to the editors.  
 
I am able to assess the statistics  
 
Quality of written English  
Please indicate the quality of language in the manuscript:  
 
Needs some language corrections before being published  
 
Declaration of competing interests  
Please complete a declaration of competing interests, considering the following questions:  
 
1. Have you in the past five years received reimbursements, fees, funding, or salary from an 
organisation that may in any way gain or lose financially from the publication of this 
manuscript, either now or in the future?  
 
2. Do you hold any stocks or shares in an organisation that may in any w ay gain or lose 
financially from the publication of this manuscript, either now or in the future?  
 
3. Do you hold or are you currently applying for any patents relating to the content of the 
manuscript?  
 
4. Have you received reimbursements, fees, funding, or salary from an organization that 
holds or has applied for patents relating to the content of the manuscript?  
 
5. Do you have any other financial competing interests?  
 
6. Do you have any non -financial competing interests in relation to this paper?  
 
If you can ans wer no to all of the above, write 'I declare that I have no competing interests' 
below. If your reply is yes to any, please give details below.  
 
I declare that I have no competing interests.  
I agree to the open peer review policy of the journal. I understand that my name will be included 
on my report to the authors and, if the manuscript is accepted for publication, my named report 
including any attachments I upload will be posted on the website along with the authors' 
responses. I agree for my repo rt to be made available under an Open Access Creative Commons 
CC-BY license ( http://creativecommons.org/licenses/by/4.0/ ). I understand that any comments 
which I do not wish to be included in my named report can be included as confidential comments 
to the editors, which will not be published.  
 
I agree to the open peer review policy of the journal  
assistant