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Research article
Impact of barometric pressure on adhesive small bowel obstruction: A retrospective study
Yuta Yamamoto
Shinshu University School of Medicine
Corresponding Author
ORCiD: https://orcid.org/0000-0003-1225-2240
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published version at BMC Surgery.
Background
Adhesive small bowel obstruction (ASBO) is one of the most common causes of postoperative morbidity. According to Boyle’s law, decreased barometric pressure causes the volume of intestinal gas to expand. We aimed to elucidate the relationship between barometric pressure and ASBO.
Methods
We divided 215 admissions of 120 patients with ASBO into three groups: fasting group with response to fasting (n = 51); decompression group with successful treatment of gastrointestinal decompression (n = 104); and surgery group that required emergency or elective surgery to treat ASBO (n = 60). We compared and examined clinical backgrounds, findings on admission, and barometric pressure during the peri-onset period (29 days: from 14 days before to 14 days after the onset of ASBO).
Results
There were significant difference among the three groups in gender, history of ASBO, hospital length of stay, and barometric pressure on the onset day of ASBO. Barometric pressure on the onset day was significantly higher in the fasting group than in the decompression group (p = 0.005). During pre-onset day 5 to post-onset day 2, fluctuations in the barometric pressure in the fasting and decompression groups showed reciprocal changes with a symmetrical axis overlapping the median barometric pressure in Matsumoto City, and the fluctuations tapered over time after onset. In the fasting group, the barometric pressure on the onset day was significantly higher than that on pre-onset days 14, 11, 7, 4, 3, 2; post-onset days 3, 10; and the median pressure in Matsumoto City. Conversely, in the decompression group, the barometric pressure on the onset day was lower than that on pre-onset days 14, 5 − 2; post-onset days 1, 2, 7, 8, 11, 13, 14; and the median pressure in Matsumoto City. In the surgery group, the barometric pressure on the onset day was equivalent to those on the other days.
Conclusion
ASBO with response to conservative treatment is vulnerable to barometric pressure. Additionally, ASBO successfully treated with fasting and decompression is associated with a different barometric pressure on the onset day and reciprocal fluctuations in the barometric pressure during the peri-onset period.
Keywords
Adhesive small bowel obstruction, Barometric pressure, Fasting, Decompression, Surgery, Reciprocal fluctuation
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CURRENT STATUS: Published
Version 1
Posted 09 Jun, 2020
Published
On 25 Jul, 2020
No community comments so far
Review #2 received
Received 27 Jun, 2020
Editorial decision: Minor revision
On 27 Jun, 2020
Review #1 received
Received 21 Jun, 2020
Reviewers invited
Invitations sent on 10 Jun, 2020
Reviewer #1 agreed
On 10 Jun, 2020
Reviewer #2 agreed
On 10 Jun, 2020
Editor assigned
On 31 May, 2020
Submission checks complete
On 30 May, 2020
Editor invited
On 30 May, 2020
First submitted
On 28 May, 2020
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This preprint is under consideration at BMC Surgery. A preprint is a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Learn more about In Review
Research article
Impact of barometric pressure on adhesive small bowel obstruction: A retrospective study
Yuta Yamamoto
Shinshu University School of Medicine
Corresponding Author
ORCiD: https://orcid.org/0000-0003-1225-2240
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
Peer Review Timeline
CURRENT STATUS: Published
Version 1
Posted 09 Jun, 2020
Published
On 25 Jul, 2020
No community comments so far
Review #2 received
Received 27 Jun, 2020
Editorial decision: Minor revision
On 27 Jun, 2020
Review #1 received
Received 21 Jun, 2020
Reviewers invited
Invitations sent on 10 Jun, 2020
Reviewer #1 agreed
On 10 Jun, 2020
Reviewer #2 agreed
On 10 Jun, 2020
Editor assigned
On 31 May, 2020
Submission checks complete
On 30 May, 2020
Editor invited
On 30 May, 2020
First submitted
On 28 May, 2020
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
View the published version at BMC Surgery.
Background
Adhesive small bowel obstruction (ASBO) is one of the most common causes of postoperative morbidity. According to Boyle’s law, decreased barometric pressure causes the volume of intestinal gas to expand. We aimed to elucidate the relationship between barometric pressure and ASBO.
Methods
We divided 215 admissions of 120 patients with ASBO into three groups: fasting group with response to fasting (n = 51); decompression group with successful treatment of gastrointestinal decompression (n = 104); and surgery group that required emergency or elective surgery to treat ASBO (n = 60). We compared and examined clinical backgrounds, findings on admission, and barometric pressure during the peri-onset period (29 days: from 14 days before to 14 days after the onset of ASBO).
Results
There were significant difference among the three groups in gender, history of ASBO, hospital length of stay, and barometric pressure on the onset day of ASBO. Barometric pressure on the onset day was significantly higher in the fasting group than in the decompression group (p = 0.005). During pre-onset day 5 to post-onset day 2, fluctuations in the barometric pressure in the fasting and decompression groups showed reciprocal changes with a symmetrical axis overlapping the median barometric pressure in Matsumoto City, and the fluctuations tapered over time after onset. In the fasting group, the barometric pressure on the onset day was significantly higher than that on pre-onset days 14, 11, 7, 4, 3, 2; post-onset days 3, 10; and the median pressure in Matsumoto City. Conversely, in the decompression group, the barometric pressure on the onset day was lower than that on pre-onset days 14, 5 − 2; post-onset days 1, 2, 7, 8, 11, 13, 14; and the median pressure in Matsumoto City. In the surgery group, the barometric pressure on the onset day was equivalent to those on the other days.
Conclusion
ASBO with response to conservative treatment is vulnerable to barometric pressure. Additionally, ASBO successfully treated with fasting and decompression is associated with a different barometric pressure on the onset day and reciprocal fluctuations in the barometric pressure during the peri-onset period.
Figure 1
Figure 2