Guideline Decreases Readmissions for Small Bowel Obstruction

MADISON, WIS. – Implementation of a small bowel obstruction guideline increased admissions to surgery, shortened the time to surgery, and decreased hospital length of stay, according to a review of 730 admissions.

"A multidisciplinary approach to guideline development and implementation for small bowel obstruction improved overall efficiency and resource utilization in the hospital, and appeared to decrease readmission for SBO [small bowel obstruction] in the short term," Dr. Wendy L. Wahl said at the annual meeting of the Central Surgical Association.

Patrice Wendling/IMNG Medical Media

She observed that prior to the guidelines, a controversy existed at the University of Michigan, Ann Arbor, over where SBO patients should be admitted, particularly those who didn’t need surgery or who had partial obstructions. This raised questions of whether there were delays in operative intervention or delays in admission from the emergency room. For some, there was also a sense that too many patients were being admitted to the medicine service with partial, or even full, obstructions.

As a result, the university’s Surgery Quality Improvement Committee partnered with the departments of surgery, medicine, and emergency medicine to create an SBO service triage and initial management guideline that was instituted in 2011. The new guidelines spell out that a patient will be admitted to a surgical service if a transition point or other concerning signs for bowel strangulation were identified on computed tomography (CT) or if the patient has had an abdominal surgery within the last 30 days.

Exceptions that may warrant medical service admission could be patients with: intra-abdominal metastases or active inflammatory bowel disease scheduled for a systemic therapy trial and acute, severe conditions requiring stabilization, explained Dr. Wahl, now the medical director of surgical quality at St. Joseph Mercy Hospital, also in Ann Arbor. Patients with known dilated bowel secondary to dysmotility problems or other medical conditions such cystic fibrosis or mental/developmental disorders could also be admitted to medicine.

The guidelines de-emphasize the use of CT scans in the absence of an absolute indication for an emergent surgical consultation such as free air, peritonitis, nonreducible symptomatic hernia, or abdominal surgery in the last 30 days. The guidelines also stress an early general surgical consultation as part of initial therapy, she added.

The investigators compared data for 490 patients admitted for SBO during 2010 with 240 patients admitted for SBO during the first 6 months of 2011 after guideline implementation. Age (roughly 57 years) and sex did not differ significantly between groups for the two time periods. All-Patient Refined Diagnostic Related Groups scores pre- and post-implementation were lower at 1.78 and 1.56 in the surgical service, compared with 3.52 and 2.23 in the medical service.

After implementation, the mean time to surgery fell significantly from 0.9 days to 0.4 days among surgical patients (P value less than .05) and from 7.6 days to 3.6 days among those admitted to medicine (P less than .001).

The percent of patients admitted to a medicine service requiring surgery for SBO did not change significantly from 14% in 2010 to 7% in 2011, but the reasons did, Dr. Wahl said. Of the 26 patients admitted to a medicine service in 2010, five had clear bowel obstructions and no reason for a medical admission, four had a missed SBO in the emergency room, and four had a late surgery consultation.

"About half of the patients could have had their process improved," she observed.

In contrast, all seven SBO patients admitted to medicine in 2011 had documented active medical issues such as myocardial infarction and lobe transplant rejection.

After guideline implementation, time to general surgery consultation among medical patients was significantly shorter at 1.7 days vs. 3.4 days (P less than .001).

The rate of SBO admissions to surgery also rose from 55% to 66% (P less than .01), while the rate of operative interventions increased from 36% to 45% (P less than .05).

Notably, the rate of readmission for SBO nonoperative patients fell from 16% to 6% after guideline implementation (P less than .01), Dr. Wahl said. Hospital length of stay decreased from 8 days to 6 days in the surgical group and from 31 days to 13 days in the medical group.

Invited discussant Dr. Fred Luchette, professor of surgery at Loyola University Chicago, Maywood, Ill., observed that SBO accounts for 15% of surgical admissions in the United States and that treatment costs exceed $1 billion.

"The improvement in care for these patients with your guideline is a step in the right direction for improving patient outcomes," he stated.

Notably, the average cost of care did not change significantly from $20,530 to $22,554 in the surgical group and from $49,956 to $36,726 in the medical group.

Dr. Luchette asked why the medical service is allowed to admit any patient with a bowel obstruction, and why medical patients waited 3 days for surgery whereas surgical patients underwent surgery that day. The surgical delay is particularly vexing given the "liberal" use of CT scans post guideline implementation at 83% among medical patients.

Dr. Wahl agreed that CT use for the medical service was liberal, but pointed out that the vast majority of these patients had other medical issues that required further investigation to differentiate whether surgery was indicated. The delay in time to laparotomy could be explained by the need to stabilize medical patients prior to surgery or the need to wait to assess improvement following medical therapy.

Dr. Wahl admitted to being somewhat surprised at the number of SBO patients who went to the medical service before guideline implementation, but reminded the audience that a lot of patients with small bowel obstructions may simply feel a "little burpy" and may not manifest with full-blown symptoms.

"There’s probably a lot of people with bowel obstructions that are never seen by a surgeon that you don’t really know about until you look, unfortunately," she said. "In this day and age where there is a limit to the amount of resident and physician capacity, you really want patients to go where they’d be best served."

When asked by the audience how the university achieved buy-in for the project and how the guidelines were disseminated, Dr. Wahl said buy-in was relatively easy since practitioners recognized there was a problem and the guidelines were posted on-line.

Dr. Wahl and her coauthors reported no conflicts of interest.

MADISON, WIS. – Implementation of a small bowel obstruction guideline increased admissions to surgery, shortened the time to surgery, and decreased hospital length of stay, according to a review of 730 admissions.

"A multidisciplinary approach to guideline development and implementation for small bowel obstruction improved overall efficiency and resource utilization in the hospital, and appeared to decrease readmission for SBO [small bowel obstruction] in the short term," Dr. Wendy L. Wahl said at the annual meeting of the Central Surgical Association.

Patrice Wendling/IMNG Medical Media

She observed that prior to the guidelines, a controversy existed at the University of Michigan, Ann Arbor, over where SBO patients should be admitted, particularly those who didn’t need surgery or who had partial obstructions. This raised questions of whether there were delays in operative intervention or delays in admission from the emergency room. For some, there was also a sense that too many patients were being admitted to the medicine service with partial, or even full, obstructions.

As a result, the university’s Surgery Quality Improvement Committee partnered with the departments of surgery, medicine, and emergency medicine to create an SBO service triage and initial management guideline that was instituted in 2011. The new guidelines spell out that a patient will be admitted to a surgical service if a transition point or other concerning signs for bowel strangulation were identified on computed tomography (CT) or if the patient has had an abdominal surgery within the last 30 days.

Exceptions that may warrant medical service admission could be patients with: intra-abdominal metastases or active inflammatory bowel disease scheduled for a systemic therapy trial and acute, severe conditions requiring stabilization, explained Dr. Wahl, now the medical director of surgical quality at St. Joseph Mercy Hospital, also in Ann Arbor. Patients with known dilated bowel secondary to dysmotility problems or other medical conditions such cystic fibrosis or mental/developmental disorders could also be admitted to medicine.

The guidelines de-emphasize the use of CT scans in the absence of an absolute indication for an emergent surgical consultation such as free air, peritonitis, nonreducible symptomatic hernia, or abdominal surgery in the last 30 days. The guidelines also stress an early general surgical consultation as part of initial therapy, she added.

The investigators compared data for 490 patients admitted for SBO during 2010 with 240 patients admitted for SBO during the first 6 months of 2011 after guideline implementation. Age (roughly 57 years) and sex did not differ significantly between groups for the two time periods. All-Patient Refined Diagnostic Related Groups scores pre- and post-implementation were lower at 1.78 and 1.56 in the surgical service, compared with 3.52 and 2.23 in the medical service.

After implementation, the mean time to surgery fell significantly from 0.9 days to 0.4 days among surgical patients (P value less than .05) and from 7.6 days to 3.6 days among those admitted to medicine (P less than .001).

The percent of patients admitted to a medicine service requiring surgery for SBO did not change significantly from 14% in 2010 to 7% in 2011, but the reasons did, Dr. Wahl said. Of the 26 patients admitted to a medicine service in 2010, five had clear bowel obstructions and no reason for a medical admission, four had a missed SBO in the emergency room, and four had a late surgery consultation.

"About half of the patients could have had their process improved," she observed.

In contrast, all seven SBO patients admitted to medicine in 2011 had documented active medical issues such as myocardial infarction and lobe transplant rejection.

After guideline implementation, time to general surgery consultation among medical patients was significantly shorter at 1.7 days vs. 3.4 days (P less than .001).

The rate of SBO admissions to surgery also rose from 55% to 66% (P less than .01), while the rate of operative interventions increased from 36% to 45% (P less than .05).

Notably, the rate of readmission for SBO nonoperative patients fell from 16% to 6% after guideline implementation (P less than .01), Dr. Wahl said. Hospital length of stay decreased from 8 days to 6 days in the surgical group and from 31 days to 13 days in the medical group.

Invited discussant Dr. Fred Luchette, professor of surgery at Loyola University Chicago, Maywood, Ill., observed that SBO accounts for 15% of surgical admissions in the United States and that treatment costs exceed $1 billion.

"The improvement in care for these patients with your guideline is a step in the right direction for improving patient outcomes," he stated.

Notably, the average cost of care did not change significantly from $20,530 to $22,554 in the surgical group and from $49,956 to $36,726 in the medical group.

Dr. Luchette asked why the medical service is allowed to admit any patient with a bowel obstruction, and why medical patients waited 3 days for surgery whereas surgical patients underwent surgery that day. The surgical delay is particularly vexing given the "liberal" use of CT scans post guideline implementation at 83% among medical patients.

Dr. Wahl agreed that CT use for the medical service was liberal, but pointed out that the vast majority of these patients had other medical issues that required further investigation to differentiate whether surgery was indicated. The delay in time to laparotomy could be explained by the need to stabilize medical patients prior to surgery or the need to wait to assess improvement following medical therapy.

Dr. Wahl admitted to being somewhat surprised at the number of SBO patients who went to the medical service before guideline implementation, but reminded the audience that a lot of patients with small bowel obstructions may simply feel a "little burpy" and may not manifest with full-blown symptoms.

"There’s probably a lot of people with bowel obstructions that are never seen by a surgeon that you don’t really know about until you look, unfortunately," she said. "In this day and age where there is a limit to the amount of resident and physician capacity, you really want patients to go where they’d be best served."

When asked by the audience how the university achieved buy-in for the project and how the guidelines were disseminated, Dr. Wahl said buy-in was relatively easy since practitioners recognized there was a problem and the guidelines were posted on-line.

Dr. Wahl and her coauthors reported no conflicts of interest.

MADISON, WIS. – Implementation of a small bowel obstruction guideline increased admissions to surgery, shortened the time to surgery, and decreased hospital length of stay, according to a review of 730 admissions.

"A multidisciplinary approach to guideline development and implementation for small bowel obstruction improved overall efficiency and resource utilization in the hospital, and appeared to decrease readmission for SBO [small bowel obstruction] in the short term," Dr. Wendy L. Wahl said at the annual meeting of the Central Surgical Association.

Patrice Wendling/IMNG Medical Media

She observed that prior to the guidelines, a controversy existed at the University of Michigan, Ann Arbor, over where SBO patients should be admitted, particularly those who didn’t need surgery or who had partial obstructions. This raised questions of whether there were delays in operative intervention or delays in admission from the emergency room. For some, there was also a sense that too many patients were being admitted to the medicine service with partial, or even full, obstructions.

As a result, the university’s Surgery Quality Improvement Committee partnered with the departments of surgery, medicine, and emergency medicine to create an SBO service triage and initial management guideline that was instituted in 2011. The new guidelines spell out that a patient will be admitted to a surgical service if a transition point or other concerning signs for bowel strangulation were identified on computed tomography (CT) or if the patient has had an abdominal surgery within the last 30 days.

Exceptions that may warrant medical service admission could be patients with: intra-abdominal metastases or active inflammatory bowel disease scheduled for a systemic therapy trial and acute, severe conditions requiring stabilization, explained Dr. Wahl, now the medical director of surgical quality at St. Joseph Mercy Hospital, also in Ann Arbor. Patients with known dilated bowel secondary to dysmotility problems or other medical conditions such cystic fibrosis or mental/developmental disorders could also be admitted to medicine.

The guidelines de-emphasize the use of CT scans in the absence of an absolute indication for an emergent surgical consultation such as free air, peritonitis, nonreducible symptomatic hernia, or abdominal surgery in the last 30 days. The guidelines also stress an early general surgical consultation as part of initial therapy, she added.

The investigators compared data for 490 patients admitted for SBO during 2010 with 240 patients admitted for SBO during the first 6 months of 2011 after guideline implementation. Age (roughly 57 years) and sex did not differ significantly between groups for the two time periods. All-Patient Refined Diagnostic Related Groups scores pre- and post-implementation were lower at 1.78 and 1.56 in the surgical service, compared with 3.52 and 2.23 in the medical service.

After implementation, the mean time to surgery fell significantly from 0.9 days to 0.4 days among surgical patients (P value less than .05) and from 7.6 days to 3.6 days among those admitted to medicine (P less than .001).

The percent of patients admitted to a medicine service requiring surgery for SBO did not change significantly from 14% in 2010 to 7% in 2011, but the reasons did, Dr. Wahl said. Of the 26 patients admitted to a medicine service in 2010, five had clear bowel obstructions and no reason for a medical admission, four had a missed SBO in the emergency room, and four had a late surgery consultation.

"About half of the patients could have had their process improved," she observed.

In contrast, all seven SBO patients admitted to medicine in 2011 had documented active medical issues such as myocardial infarction and lobe transplant rejection.

After guideline implementation, time to general surgery consultation among medical patients was significantly shorter at 1.7 days vs. 3.4 days (P less than .001).

The rate of SBO admissions to surgery also rose from 55% to 66% (P less than .01), while the rate of operative interventions increased from 36% to 45% (P less than .05).

Notably, the rate of readmission for SBO nonoperative patients fell from 16% to 6% after guideline implementation (P less than .01), Dr. Wahl said. Hospital length of stay decreased from 8 days to 6 days in the surgical group and from 31 days to 13 days in the medical group.

Invited discussant Dr. Fred Luchette, professor of surgery at Loyola University Chicago, Maywood, Ill., observed that SBO accounts for 15% of surgical admissions in the United States and that treatment costs exceed $1 billion.

"The improvement in care for these patients with your guideline is a step in the right direction for improving patient outcomes," he stated.

Notably, the average cost of care did not change significantly from $20,530 to $22,554 in the surgical group and from $49,956 to $36,726 in the medical group.

Dr. Luchette asked why the medical service is allowed to admit any patient with a bowel obstruction, and why medical patients waited 3 days for surgery whereas surgical patients underwent surgery that day. The surgical delay is particularly vexing given the "liberal" use of CT scans post guideline implementation at 83% among medical patients.

Dr. Wahl agreed that CT use for the medical service was liberal, but pointed out that the vast majority of these patients had other medical issues that required further investigation to differentiate whether surgery was indicated. The delay in time to laparotomy could be explained by the need to stabilize medical patients prior to surgery or the need to wait to assess improvement following medical therapy.

Dr. Wahl admitted to being somewhat surprised at the number of SBO patients who went to the medical service before guideline implementation, but reminded the audience that a lot of patients with small bowel obstructions may simply feel a "little burpy" and may not manifest with full-blown symptoms.

"There’s probably a lot of people with bowel obstructions that are never seen by a surgeon that you don’t really know about until you look, unfortunately," she said. "In this day and age where there is a limit to the amount of resident and physician capacity, you really want patients to go where they’d be best served."

When asked by the audience how the university achieved buy-in for the project and how the guidelines were disseminated, Dr. Wahl said buy-in was relatively easy since practitioners recognized there was a problem and the guidelines were posted on-line.

Dr. Wahl and her coauthors reported no conflicts of interest.