Traumatic pseudoaneurysms of the liver and spleen in children: is routine screening warranted?

Background

Although blunt injury to the spleen and liver can lead to pseudoaneurysm formation, current surgical guidelines do not recommend follow-up imaging. Controversy exists regarding the clinical implications of these traumatic pseudoaneurysms as well as their management.

Methods

Retrospective review of children treated nonoperatively for isolated blunt liver and spleen trauma between 1991 and 2008 was undertaken. Patient demographics, grade of injury, and follow-up Doppler ultrasound results were obtained.

Results

Three hundred sixty-two children were identified. One hundred eighty-six of them had splenic injuries, and 10 (5.4%) developed pseudoaneurysms. They were associated with grade III (3/39 [8%]) and grade IV (7/41 [17%]) injuries. In 7 patients, the pseudoaneurysm thrombosed spontaneously. Angiographic embolization was required in 2 children, and one underwent emergency splenectomy for delayed hemorrhage. Of the 176 patients who had liver injuries, 3 (1.7%) developed pseudoaneurysms. All 3 were associated with grade IV injuries (3/11 [27%]). One child underwent early embolization, while 2 developed delayed hemorrhage requiring emergent treatment.

Conclusions

Pseudoaneurysm development after blunt abdominal trauma is associated with high-grade splenic and liver injuries. Routine screening of this group of patients before discharge from hospital may be warranted because of the potential risk of life-threatening hemorrhage.     

Dynamic Splinting for the Stiff Hand after Trauma: Predictors of Contracture Resolution

Study Design

Prospective cohort.

Introduction

Many variables are believed to influence the success of dynamic splinting, yet their relationship with contracture resolution is unclear.

Purpose of the Study

To identify the predictors of outcome with dynamic splinting of the stiff hand after trauma.

Methods

Forty-six participants (56 joints) completed eight weeks of dynamic splinting, and the relationship between 13 clinical variables and outcome was explored.

Results

Improvement in passive range of motion, active range of motion (AROM), and torque range of motion averaged 21.8°, 20.0°, and 13.0°, respectively (average daily total end range time, 7.96 hours). Significant predictors included joint stiffness (modified Weeks Test), time since injury, diagnosis, and deficit (flexion/extension). For every degree change in ROM on the modified Weeks Test, AROM improved 1.09° (standard error, 0.2). Test-retest reliability of the modified Weeks Test was high (intraclass correlation coefficient [2, 1] = 0.78).

Conclusions

Better progress with dynamic splinting may be expected in joints with less pretreatment stiffness, shorter time since injury (<12 weeks), and in flexion rather than extension deficits. Further research is needed to determine the accuracy with which the modified Weeks Test may predict contracture resolution.

Level of Evidence

2b.     

National trends in pediatric blunt spleen and liver injury management and potential benefits of an abbreviated bed rest protocol

Purpose

Recent reports suggest that an abbreviated bed rest protocol (ABRP) may safely reduce length of stay (LOS) and resource utilization in pediatric blunt spleen and liver injury (BSLI) patients. This study evaluates national temporal trends in BLSI management and estimates national reduction in LOS using an ABRP.

Methods

Pediatric patients (< 18 years old) sustaining BLSI were identified in the Kids’ Inpatient Database from 2000 to 2009. Yearly rates of injury and operative intervention were examined and stratified by type of injury. APSA guidelines and the reported ABRP were applied based on abbreviated injury score (AIS) and compared with actual LOS.

Results

22,153 patients were identified. Over the study period, operative rates for spleen and liver injuries and overall mortality significantly declined: LOS = 3.1 days (± 1.6) and 2.7 days (± 1.9) for spleen and liver, respectively. If APSA guidelines were followed, the rates were LOS = 3.7 days (± 1.1) and 3.4 days (± 0.7), respectively. Application of the ABRP would result in LOS = 1.3 days (± 0.5) for all BSLI patients. An ABRP could potentially save 1.7 hospital days/patient or 36,964 patient hospital days nationally.

Conclusion

Our study confirms a significant national decrease in operative intervention and overall mortality in patients with BSLI. Additionally, it appears that a shorter observation period than the APSA guidelines is being utilized. The implementation of ABRP holds potential in further reducing LOS and resource utilization.     

Interhospital transfer of liver trauma in New Mexico: a state of austere resources

Background

There is debate in the trauma literature regarding the effect of prolonged prehospital transport on morbidity and mortality. This study analyzes the management of hepatic trauma patients requiring surgery and compares the outcomes of the group that was transferred to the University of New Mexico Hospital (UNMH) from outside institutions, to the directly admitted group.

Materials and methods

The UNMH Trauma Database was queried from 2005–2012. Of 674 patients who sustained liver injuries, 163 required surgery: 46 patients (28.2%) underwent interhospital transfer, and 117 (71.8%) were directly admitted. Variables examined included transfer status, trauma mechanism, transport type, injury severity score (ISS), liver injury grade, and associated injuries. Outcome variables included length of stay (LOS) and 30-day mortality. Outcomes of the transfer group (TG) and direct admit group (DAG) were compared.

Results

Both TG and DAG had the same median age (31 y, P = 0.33). The blunt-to-penetrating ratio was the same for each group (48% blunt: 52% penetrating, P = 1.0). Median ISS was 25 for the TG and 26 for the DAG. Grade III or higher injury occurred in 29 (63%) of the TG and in 68 (58%) of the DAG (P = 0.56). Median hospital LOS was 14 d for TG and 9 d for DAG (P = 0.15). Median intensive care unit LOS was 4 d for both groups (P = 0.71). Thirty-day mortality was 20% in each group (P = 0.27). Using a multiple logistic regression model for the outcome of mortality, only age, ISS, and liver injury grade, not transfer status or transport type, had a significant effect on mortality.

Conclusions

There was no significant difference in liver injury grade, ISS, LOS, and mortality between TG and DAG. In the patient population of our study, transfer status did not affect outcome.     

Comparison of costs of staged versus simultaneous lower extremity arterial hybrid procedures

Background

Hybrid procedures combine endovascular and open surgical techniques. We examined utilization rates and ways of performing them more efficiently.

Methods

Hybrids were selected using codes for femoral endarterectomy, infrainguinal, or aorto-iliac-femoral bypass and angioplasty from Nationwide Inpatient Sample (NIS) data, then categorized as staged, or performed on the same day. Outcomes included utilization rates, total hospital charges, and length of stay (LOS). Confounders of charges and LOS were identified and excluded from final comparisons.

Results

Utilization increased 7% from 2000 to 2004. Univariate associations linked staging to variables included in linear regressions for hospital charges and LOS. Excluding identified confounders from the final subgroup analysis still showed large differences in charges (same-day = $34,206, staged = $60,087) and LOS (same-day = 3 days, staged = 7 days).

Conclusions

Utilization of hybrids is increasing. Performing hybrids on the same day, if possible, greatly reduces hospital charges and LOS, emphasizing preadmission planning and simultaneous coordination of both portions.     

Epidemiology of pediatric cardiac injuries: a National Trauma Data Bank analysis

Background

Few studies of pediatric cardiac injuries have been conducted in large cohorts. We, therefore, investigated the epidemiology of these injuries in the United States.

Methods

We identified patients with traumatic cardiac injury from the National Trauma Data Bank, using the International Classification of Diseases, Ninth Revision, codes. Demographic data, clinical data, and inhospital outcomes were compared among 5 age groups. A logistic regression model was used to determine adjusted mortality among these groups.

Results

Six hundred twenty-six patients met criteria. Fifty-nine percent sustained cardiac contusion; 36%, laceration. Penetrating injuries proved more severe than blunt, having lower average Glasgow Coma Scale (6.8 vs 8.7) and higher percentage of patients with Glasgow Coma Scale of 8 or lower (68% vs 53%). Associated injuries occurred in 484 (77%), most common being lung injuries (46%), hemopneumothorax (37%), and rib fractures (26%). Eleven percent underwent laparotomy; 9%, thoracotomy; 2%, craniotomy/craniectomy; and 0.2%, sternotomy. Complications occurred in 80 (13%), most common being cardiac arrest (4%). Firearm injuries result in the highest mortality rate (76%), compared with other mechanisms (26%-31%). Crude mortality in different age strata showed significant differences that were lost after adjustment for confounding variables.

Conclusions

The predominant cardiac injury was blunt (65%; 35% sustained penetrating insults), frequently paired with contusion. Pediatric cardiac injury is associated with excessive inhospital mortality (40%), with no age-related difference in adjusted mortality.     

Ureteral trauma: Patterns and mechanisms of injury of an uncommon condition

Background

Traumatic ureteral injuries are uncommon, thus large series are lacking.

Methods

We performed a retrospective analysis of the National Trauma Data Bank (2002-2006).

Results

Of the 22,706 genitourinary injuries, 582 ureteral injury patients were identified (38.5% blunt, 61.5% penetrating). Patients were 84% male, 38% white, and 37% black (mean age, 31 y). Blunt trauma patients had a median Injury Severity Score of 21.5 versus 16.0 for penetrating injury (P < .001). Mortality rates were 9% blunt, and 6% penetrating (P = .166). Penetrating trauma patients had a higher incidence of bowel injuries (small bowel, 46%; large bowel, 44%) and vascular injuries (38%), whereas blunt trauma patients had a higher incidence of bony pelvic injuries (20%) (P < .001).

Conclusions

Ureteral injuries are uncommon, seen in approximately 3 per 10,000 trauma admissions, and occur more in penetrating than in blunt trauma. The most common associated injury for blunt ureteral trauma is pelvic bone fracture, whereas penetrating ureteral trauma patients have more hollow viscus and vascular injuries.     

The association of compensation on longer term health status for people with musculoskeletal injuries following road traffic crashes: emergency department inception cohort study

Objective

To compare the health status of people claiming compensation for injuries sustained in road traffic crashes (RTC), with people who do not claim compensation.

Design

Prospective cohort study.

Setting

Australian Capital Territory, Australia and a fault based common law compensation scheme.

Subjects

People presenting to the emergency department with mild to moderate musculoskeletal injury following RTC.

Main outcome measures

Physical Component Score (PCS) and Mental Component Score (MCS) of the Short Form 36 (SF-36) health status measure, Hospital Anxiety and Depression Scale (HADS) and the Functional Rating Index (FRI). These measures are recorded immediately post crash, at 6 and 12 months post crash.

Results

95 people participated in the study and were enrolled a mean of 8.6 (median 8) days following the crash. 86% were followed up to 12 months after injury. Mean age was 37 years, 61% were female and 91% were employed at the time of their injury. 33% ultimately claimed compensation, and 25% engaged a lawyer.There were no major differences in baseline personal characteristics or injury related factors between the groups. As expected, involvement as a passenger and in multiple vehicle crashes, were more frequent in the group claiming compensation.Over the duration of the study claiming compensation was associated with lower SF-36 PCS (−5.5 (95%CI −8.6 to −2.4), p = 0.001), greater HADS-Anxiety (1.7 (95%CI 0.2-3.3), p = 0.048), and worse FRI (11.2 (95%CI 3.9-18.5), p = 0.003).There was a highly significant improvement in health status between baseline and 6 months after injury, but no further significant change between 6 and 12 months after injury. There was no difference in rate of improvement between the groups.Claiming compensation and psychological factors were independent predictors of worse health status at 12 months.

Conclusion

In this study the group claiming compensation had overall worse health status following mild to moderate musculoskeletal injuries over the course of the study. There was no difference in rate of improvement between the groups. However, it is not possible to determine whether this negative effect was due to claiming compensation itself or the presence of other unmeasured factors.     

Indirect versus direct laryngoscopy for routine nasotracheal intubation

Study Objective

To compare the effectiveness of the indirect laryngoscopes, Airtraq (A) and GlideScope (G), with the Macintosh (M) laryngoscope in routine nasotracheal intubation.

Design

Randomized, single-blinded study.

Setting

University-affiliated, tertiary-care hospital.

Patients

62 adult, ASA physical status 1 and 2 patients with normal airways requiring nasotracheal intubation for dental or maxillofacial surgery.

Intervention

Patients in Groups A and G underwent nasal intubation with the Airtraq and GlideScope, respectively, while laryngoscopy in Group M was performed with the Macintosh blade.

Measurements

Performance of the intubating tools was judged by the ease [Intubation Difficulty Scale (IDS) and numeric rating scale (NRS)] and time to intubation (laryngoscopy and endotracheal tube advancement). In addition, hemodynamic parameters, severity of postoperative sore throat, and posture of the intubator were recorded.

Main Results

IDS score was significantly lower with the Airtraq and GlideScope than with the Macintosh laryngoscope (mean ± SD: A 0.1 ± 0.3, G 0.3 ± 0.6, M 0.8 ± 1.0; P = 0.013). NRS reported by the intubators showed a similar preference for indirect over direct laryngoscopy (A 0.9 ± 0.7, G 1.1 ± 0.6, M 1.9 ± 1.1; P = 0.001). Duration of laryngoscopy and endotracheal tube insertion was similar in all groups. No significant intergroup differences in hemodynamic parameters were recorded. Postoperative sore throat was significantly reduced using the GlideScope compared with the other devices (P = 0.048).

Conclusion

The Airtraq and GlideScope facilitated nasotracheal intubation more so than the Macintosh laryngoscope in adults with apparently normal airways.     

Hepatic injury and the kinetics of bone marrow-derived hepatocyte transgene expression

Background

Numerous congenital and acquired liver diseases could benefit from a successful hepatic cell therapy strategy. Hepatotypic cells derived from bone marrow have been recognized during liver injury, repair, and regeneration. To study this phenomenon, we compared the effect of several modes of experimental hepatic injury on hepatotypic protein expression in a mouse model after bone marrow transplantation.

Methods

Male mice transgenic for the liver-specific protein human α-1 antitrypsin (hAAT) were used as bone marrow donors. Syngeneic wild-type recipient mice were subjected to 1 of 3 hepatic injuries: (1) sublethal irradiation, (2) injection of a hepatotoxic adenoviral construct, and (3) administration of a hepatotoxic diet. Bone marrow-derived hepatotypic (BMdH) transgene expression was determined by serial serum enzyme-linked immunosorbent assay for hAAT.

Results

In both acute injury models, hAAT expression was detected as early as 1 week, whereas the control group never elicited hAAT expression. The adenovirus-treated group demonstrated transient hAAT level expression lasting up to 2 weeks postinjury, whereas the irradiated group maintained persistent hAAT expression through 4 months. In the chronic injury (hepatotoxin) model, hAAT expression persisted and was noted to increase over time to 200 to 300 ng/mL.

Conclusions

Irradiation favors long-term establishment of BMdH transgene expression, and chronic injury further promotes this phenomenon.     

Prospective validation of an abbreviated bedrest protocol in the management of blunt spleen and liver injury in children

Purpose

The aim of this study was to validate the safety, and quantify the impact of, an abbreviated protocol for blunt spleen/liver injury (BSLI), we instituted a prospective study with early ambulation.

Methods

Following institutional review board approval, data were collected prospectively in all patients with BSLI up to 8 weeks after discharge. There were no exclusion criteria, and patient accrual was consecutive. Bedrest was restricted to 1 night for grade I and II injuries and 2 nights for grade III or higher.

Results

A total of 131 patients with BSLI were enrolled. Injuries included isolated spleen in 72 (55%), liver only in 55 (42%), and both in 4 (3%). One splenectomy was required for a grade 5 injury. Transfusions were used in 24 patients, with 18 patients undergoing transfusion because of injured solid organ. Bedrest was applicable to 110 patients (84%), for which the mean grade of injury was 2.6 and mean bedrest was 1.6 days. The need for bedrest was the limiting factor for length of stay in 86 patients (66%). There were 2 deaths, and no patients were readmitted.

Conclusions

An abbreviated protocol of 1 night of bedrest for grade I and II injuries and 2 nights for grade III or higher can be safely used, resulting in dramatic decreases in hospitalization compared with the current American Pediatric Surgical Association recommendations.     

Promotion to professor: a career development resource

Background

Patients with penetrating injuries are known to have worse outcomes than those with blunt trauma. We hypothesize that within each injury mechanism there should be no outcome difference between insured and uninsured patients.

Methods

The National Trauma Data Bank version 7 was analyzed. Patients aged 65 years and older and burn patients were excluded. The insurance status was categorized as insured (private, government/military, or Medicaid) and uninsured. Multivariate analysis adjusted for insurance status, mechanism of injury, age, race, sex, injury severity score, shock, head injury, extremity injury, teaching hospital status, and year.

Results

A total of 1,203,243 patients were analyzed, with a mortality rate of 3.7%. The death rate was significantly higher in penetrating trauma patients versus blunt trauma patients (7.9% vs 3.0%; P < .001), and higher in the uninsured (5.3% vs 3.2%; P < .001). On multivariate analysis, uninsured patients had an increased odds of death than insured patients, in both penetrating and blunt trauma patients. Penetrating trauma patients with insurance still had a greater risk of death than blunt trauma patients without insurance.

Conclusions

Insurance status is a potent predictor of outcome in both penetrating and blunt trauma.     

Application of the APSA evidence-based guidelines for isolated liver or spleen injuries: a single institution experience

Purpose

In 1998, the American Pediatric Surgical Association (APSA) recommended evidence-based guidelines for the management of hemodynamically stable patients with isolated liver or spleen injuries. A clinical practice guideline (CPG) was developed using the APSA guidelines. This study analyzes the impact of the CPG on the care of these children in a single institution.

Methods

Patients treated with the CPG between September 1998 and June 2002 were compared with a similar cohort admitted from February 1992 to October 1997, before the CPG was instituted. Groups were analyzed for age, computerized tomographic organ injury grade, hematocrits obtained, Injury Severity Score (ISS), length of intensive care unit (ICU) and hospital stay, follow-up imaging studies performed, and outcome.

Results

CPG patients had a shorter ICU length of stay (0.4 ± 0.6 v 1.4 ± 0.6 days; P < .001), shorter hospital stay (3.8 ± 1.2 v 7.2 ± 1.4 days; P < .001), fewer hematocrits obtained (4.7 ± 2.2 v 9.2 ± 3.1; P < .001), and fewer follow-up imaging studies (0.3 ± 0.4 v 2.1 ± 1.1; P < .001). One patient in the CPG group was readmitted for delayed hemorrhage. No urgent operations were performed in either group.

Conclusions

Application of an APSA-based CPG resulted in decreased length of ICU stay, decreased hospital stay, and decreased resource utilization without any noted effect on outcome.     

Comparison of short- and long-term functional outcome of nonoperatively managed renal injuries in children

Purpose

The purpose of this study was to better determine the long-term functional outcome of nonoperatively managed renal injuries in children.

Methods

After Institutional Review Board approval, all children with blunt renal injuries were retrospectively reviewed. Renal function, after complete healing had been documented radiographically (3 months postinjury), was evaluated through measurements of blood urea nitrogen, serum creatinine, blood pressure, and split percentage of renal function using technetium-99m-dimercaptosuccinic acid nuclear scanning. Repeated data at 1 year postinjury were compared with the early follow-up results.

Results

Sixteen consecutive children (mean age, 10 years; range, 3-16 years) had complete follow-up over the study period. All children were managed without laparotomy. Injury grades were as follows: grades I to III, 4; grade IV, 9; and grade V, 3. No child had an abnormal blood urea nitrogen, serum creatinine, or blood pressure measurement at follow-up. Consistent with previous results, percentage of renal function by technetium-99m-dimercaptosuccinic acid scanning was influenced by injury grade at the early 3-month follow-up (46.5% ± 4.5%, 42% ± 7.1%, and 32.7% ± 5.9% [mean ± SD] for grades I-III, grade IV, and grade V, respectively). One-year functional results for the high-grade injuries also correlated to initial injury grade and were not significantly different from the results at early follow-up (43.8% ± 4.8%, 41.9% ± 6.6%, and 31.35 ± 5.7% [mean ± SD] for grades I-III, grade IV, and grade V, respectively; P = not significant). No child required delayed surgery.

Conclusions

Long-term (1 year) functional outcome in nonoperatively managed renal injuries in children appears preserved and is influenced by injury grade.     

Understanding work-related injuries in children: a perspective in West Virginia using the state-managed workers' compensation system

Background/purpose

Little data exist that defines the consequences of occupational injuries in children. Traditional assessment of work-related injury is coupled with disability payments based on salary, which give little insight into etiology and severity. The authors hypothesize that the risk and pattern of occupational injuries in young workers are different then adults.

Methods

Claims from 1996 through 2000 were analyzed from the West Virginia Bureau of Workers Compensation. To define the significance of an injury, child and adult groups were subdivided into injuries that required surgery (ie, serious injuries). Current Procedural Terminology (CPT) codes for anesthesia and surgical procedures were cross referenced with the claims to ensure group designation. Relative risks (RR) were used to compare groups.

Results

Between 1996 and 2000, 364,063 claims were submitted, 14,093 in workers ≤19 years of age. Two hundred seventy claims in children required surgery. Serious injuries in children occur more often in boys 2.2× mainly in the (16 to 24 hours) evening (48% v 23.13%; P < .05) and in July/August (26.5 v 18.4; P < .001). Falls were the main mechanism of injury. Proportionately fingers (1.70×) and hands (1.64×, 1.6 to 1.7) were injured in children. Lacerations (3.4×), fractures (1.4×), and amputations (3.75×) frequently resulted in general anesthetic procedures, and the RR of these injuries were increased versus adults. Service, manufacturing, construction, and agriculture were the main injury-related occupations in children.

Conclusions

For any job category, injuries in children have unique features, tend to be more serious, and require a surgical intervention proportionately more frequently than adults.     

Traumatic pediatric bile duct injury: nonoperative intervention as an alternative to surgical intervention

Background

Nonoperative management of blunt pediatric liver injuries has become the standard of care in the absence of hemodynamic instability. However, associated bile duct injuries remain as difficult challenges. Few case reports have demonstrated the benefits of conservative approaches, but others have found better outcomes with surgical intervention. In this study, we report on our experience with interventional endoscopic and radiologic management of 5 pediatric patients with bile duct injuries who underwent unsuccessful surgical interventions.

Methods

We conducted a retrospective review of medical records of all pediatric patients who were admitted with major blunt liver trauma and bile duct injuries over a period of 5 years.

Results

There were 5 patients (4 boys and 1 girl) whose ages range from 3 to 11 years in this study. All patients had major liver laceration and bilomas. Two had intrahepatic and 3 had extra hepatic bile duct injuries (2 right hepatic ducts and 1 junction of cystic duct with common bile duct). All of them underwent previous laparotomies, once in 2 patients, twice in 2 patients, and thrice in 1 patient. All 5 patients were eventually treated successfully with interventional endoscopic and radiologic techniques. Three underwent endoscopic retrograde cholangiopancreatography stenting with percutaneous drainage. Two patients were managed with percutaneous drainage alone. The follow-up is up to 2.5 years with normal liver function test and bile duct ultrasound.

Conclusion

With the current advancement in endoscopic retrograde cholangiopancreatography and intervention radiology techniques, we believe that interventional endoscopic and radiologic management of bile duct injuries caused by blunt trauma in children is successful and efficacious even after multiple laparotomies.     

Natural history of nonoperative management for grade 4 and 5 liver and spleen injuries in children

Purpose

Nonoperative management is standard treatment of blunt liver or spleen injuries. However, there are few reports outlining the natural history and outcomes of severe blunt hepatic and splenic trauma. Therefore, we reviewed our experience with nonoperative management of grade 4 or 5 liver and spleen injuries.

Methods

A retrospective analysis was performed on patients with grade 4 or 5 (high-grade) blunt liver and/or spleen injuries from April 1997 to July 2007 at our children's hospital. Demographics, hospital course data, and follow-up data were analyzed.

Results

There were 74 high-grade injuries in 72 patients. There were 30 high-grade liver and 44 high-grade spleen injuries. Two patients had both a liver and splenic injury. High-grade liver injuries had a significantly longer length of intensive care and hospital stay compared to high-grade spleen injuries. There were also a significantly higher number of transfusions, radiographs, and total charges in the high-grade liver injuries when compared to the high-grade splenic injuries. The only mortality from solid organ injury was a grade 4 liver injury with portal vein disruption. In contrast, there was only one complication from a high-grade splenic injury—a pleural effusion treated with thoracentesis. There were 5 patients with complications from their liver injury requiring 18 therapeutic procedures. Three patients (10%) with liver injury required readmission as follows: one 5 times, one 3 times, and another one time.

Conclusions

Patients with high-grade liver injuries have a longer recovery, more complications, and greater use of resources than in patients with similar injuries to the spleen.     

Is it necessary to drain all postoperative fluid collections after appendectomy for perforated appendicitis?

Purpose

Children treated for perforated appendicitis can have significant morbidity. Management often includes looking for and draining postoperative fluid collections. We sought to determine if drainage hastens recovery.

Methods

Children with perforated appendicitis treated with appendectomy from 2006 to 2009 were reviewed. Patients with postoperative fluid that was drained were compared with patients with undrained fluid with regard to preoperative features and postoperative outcomes. Statistical analyses included paired Student's t tests, Mann-Whitney U test, and linear regression.

Results

Five hundred ninety-one patients were reviewed. Seventy-one patients had postoperative fluid, of whom 36 had a drainage procedure and 35 did not. There was no significant difference in white blood cell count at the time of assessment for drainage (16.4 ± 4.0 vs 14.6 ± 4.9, P = .14), days with fever (3.5 ± 3.0 vs 2.9 ± 2.5, P = .35), or readmission rate (19% vs 31%, P = .28). After multivariate linear regression, larger fluid volumes were associated with prolonged length of stay (LOS) (P = .03). For fluid collections between 30-100 mL, there was no significant difference in LOS between the drain and no-drain groups (9.8 ± 3.5 vs 10.9 ± 5.2 days, P = .51).

Conclusion

After appendectomy for perforated appendicitis, larger postoperative fluid collections are associated with prolonged LOS. Drainage of collections less than 100 mL may not hasten recovery.