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Online Journal of Veterinary Research

REFEREE FORM


Please return to: Editors; Online Journal of Veterinary Research, onlinejournals@gmail.com


Title: Effect of cannulated veno-arterial and left heart bypass cooling (25o)C with autologous oxygenation on

arterial blood components and gases in a sheep model.

Authors-Martín A. Marcosa, Javier Moulya, Oscar Robledoa, Eduardo J. Durantea, Carlos A. Presab.

Organization-Central Department of Surgery. Veterinary Science Faculty. La Plata University. Buenos Aires and bPediatric Heart Surgery Department. Sor Maria Ludovica Children's Hospital. La Plata, Buenos Aires. Argentina.

 

 

Author: Maryam Ansari-Lari * a, Sara Ahmadnia Motlaghb, Marjan Moravvejib, Somayye Bahramib, Arsalan Hosseinib

ID: 29635-2011



The Editor must ensure that the OJVR publishes only papers which are scientifically sound. To achieve this objective, the referees are requested to assist the Editor by making an assessment of a paper submitted for publication by:

(a)  Writing a report on the reverse side of this form,
(b} Check the boxes shown below under 1. and  2. ( YES or NO) [N.B.A "NO" assessment must be
       supported by specific comment in the report.
(c)  Make a recommendation under 3.

The Editor-in-Chief would appreciate hearing from any referee who feels that he/she will be unable to review a manuscript within two weeks.

1. CRITERIA FOR JUDGEMENT (Mark "Yes" or "No").
 

Is the work scientifically sound? Y
Is the work an original contribution? Y

Are the conclusions justified on the evidence presented? Y
Is the work free of major errors in fact, logic or technique? Y
Is the paper clearly and concisely written? No see below
Do you consider that the data provided on the care and use of animals (See Instructions to Contributors) is sufficient to establish that the animals used in the experiments were well looked after, that care was taken to avoid distress, and that there was no unethical use of animals? Yes Ethics approved by University

2  PRESENTATION (Mark "Yes" or "No").
 

Does the title clearly indicate the content of the paper? NO (see suggestions)
Does the abstract convey the essence of the article? NO (see changes)
Are all the tables essential? Y
Are the figures and drawings of good quality? Y
Are the illustrations necessary for an understanding of the text? Y
Is the labelling adequate? Y


3. RECOMMENDATIONS(Mark one with an X)
 

Not suitable for publication in the OJVR
Reassess after major changes X
Accept for publication with minor changes   
Accept for publication without changes


4.REPORT:. This work is useful in that it shows that vital functions can be kept by cannulated cooling to 25C in anesthetized sheep. It also describes the effects using two circulatory bypasses. We usually require 6 animals per group minimum for statistical significance. Also cannulated controls should have been used (ie effect of cannulation per se) If authors have supplied raw data the variance for the 5 animals in each group should be checked. The paper is poorly written and requires major changes (suggestions in text) for acceptance in this journal. The ABSTRACT is hard to follow and extensive changes as suggested are required. The Title also does not reflect the work and we advise the changed one. Materials and Methods. These are well described and accurate only require minor changes as suggested  The results presented in Abstract and in text are confusing/conflicting as it is stated that the parameters that changed was MAP arterial pressure and Arterial Oxygen pressure, but in text (Results) that venous pressure also changed? Please clear up. We suggest clearly explaining the differences between the left heart and venous arterial cannulation results and BEFORE and AFTER in both groups. You do not need to repeat RESULTS if they are already in Tables just mention the ones that changed significantly. Also authors have forgotten to put UNITS of measurement for example mmHg for gases please verify these units and percentage for hematocrit values. ALL Abbreviations etc such as MAP, HR etc needs to be spelled out in the ABSTRACT for example:hematocrit (HT). Please refer paper back to authors for changes. Accept with major changes as suggested. If Abstract does not reflect findings accurately permit changes.

 

ABSTRACT Suggestion

 The effect of 25°C cooling induced by cannulated veno arterial (VAB 5 sheep) and left heart bypass (LHB 5 sheep) circulatory support on an in situ hypothermic lung function sheep model is described. The sheep were cooled without inducing cardiac inotropic effects or arrhythmia. The time for cooling from 38°C to 25°C, averaged 100 minutes in VAB and 60 minutes in LHB sheep. Mean arterial pressure declined in both groups whereas central venous pressure, heart rate, hematocrit,  PaCO2,  PaO2 and SaO2 did not vary significantly between VAB and LHB groups.  The experiment showed that it is possible to induce cooling through  VAB or LHB cannulation allowing partial but adequate perfusion of ischemic sensitive organs in sheep.  PaO2 values could be improved with different ventilator modes and capnography-guided ventilation.  This model could allow for the assessment of lung function in hypothermia without use of membrane oxygenators or lung protective drugs.

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