Impact of barometric pressure on adhesive small bowel obstruction: A retrospective study
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.
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).
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.
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.
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Posted 09 Jun, 2020
On 25 Jul, 2020
Received 27 Jun, 2020
On 27 Jun, 2020
Received 21 Jun, 2020
Invitations sent on 10 Jun, 2020
On 10 Jun, 2020
On 10 Jun, 2020
On 31 May, 2020
On 30 May, 2020
On 30 May, 2020
On 28 May, 2020
Impact of barometric pressure on adhesive small bowel obstruction: A retrospective study
Posted 09 Jun, 2020
On 25 Jul, 2020
Received 27 Jun, 2020
On 27 Jun, 2020
Received 21 Jun, 2020
Invitations sent on 10 Jun, 2020
On 10 Jun, 2020
On 10 Jun, 2020
On 31 May, 2020
On 30 May, 2020
On 30 May, 2020
On 28 May, 2020
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.
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).
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.
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