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Ann Surg. 2017 Sep;266(3):516-524. doi: 10.1097/SLA.0000000000002372.

The Fifth Vital Sign: Postoperative Pain Predicts 30-day Readmissions and Subsequent Emergency Department Visits.

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1
*Stanford University School of Medicine, Stanford, CA †Birmingham Veterans Affairs Medical Center, University of Alabama at Birmingham, Birmingham, AL ‡Veterans Affairs Boston Healthcare System, Boston University and Harvard Medical School, Boston, MA §Milwaukee Veterans Affairs Medical Center, Medical College of Wisconsin, Milwaukee, WI ¶Veterans Affairs Palo Alto Healthcare System, Palo Alto, CA.

Abstract

OBJECTIVE:

We hypothesized that inpatient postoperative pain trajectories are associated with 30-day inpatient readmission and emergency department (ED) visits.

BACKGROUND:

Surgical readmissions have few known modifiable predictors. Pain experienced by patients may reflect surgical complications and/or inadequate or difficult symptom management.

METHODS:

National Veterans Affairs Surgical Quality Improvement data on inpatient general, vascular, and orthopedic surgery from 2008 to 2014 were merged with laboratory, vital sign, health care utilization, and postoperative complications data. Six distinct postoperative inpatient patient-reported pain trajectories were identified: (1) persistently low, (2) mild, (3) moderate or (4) high trajectories, and (5) mild-to-low or (6) moderate-to-low trajectories based on postoperative pain scores. Regression models estimated the association between pain trajectories and postdischarge utilization while controlling for important patient and clinical variables.

RESULTS:

Our sample included 211,231 surgeries-45.4% orthopedics, 37.0% general, and 17.6% vascular. Overall, the 30-day unplanned readmission rate was 10.8%, and 30-day ED utilization rate was 14.2%. Patients in the high pain trajectories had the highest rates of postdischarge readmissions and ED visits (14.4% and 16.3%, respectively, P < 0.001). In multivariable models, compared with the persistently low pain trajectory, there was a dose-dependent increase in postdischarge ED visits and readmission for pain-related diagnoses, but not postdischarge complications (χ trend P < 0.001).

CONCLUSIONS:

Postoperative pain trajectories identify populations at risk for 30-day readmissions and ED visits, and do not seem to be mediated by postdischarge complications. Addressing pain control expectations before discharge may help reduce surgical readmissions in high pain categories.

PMID:
28657940
DOI:
10.1097/SLA.0000000000002372
[Indexed for MEDLINE]

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