Keck School Faculty

Morgan Anne Schellenberg

Morgan Anne Schellenberg

Assistant Professor of Clinical Surgery
Surgery
2051 Marengo Street Health Sciences Campus Los Angeles

Pseudoaneurysm after High-Grade Penetrating Solid Organ Injury and the Utility of Delayed CT Angiography J Am Coll Surg. 2023 Apr 27. . View in PubMed

Epidemiology and Outcomes of Traumatic Vascular Injury Repair by Trauma Surgeons and Vascular Surgeons in a Collaborative Model J Trauma Acute Care Surg. 2023 Apr 04. . View in PubMed

The uprise of gun violence in the United States: consequences of a dual pandemic Curr Opin Anaesthesiol. 2023 Apr 01; 36(2):132-136. . View in PubMed

Does mortality after trauma team activation peak at shift change? Surgeon. 2023 Apr; 21(2):135-139.. View in PubMed

Mechanisms of Injury in Adolescent Trauma Patients With a Positive Marijuana Screen Am Surg. 2023 Mar 06; 31348231157807. . View in PubMed

Emergency physician and nurse discretion accurately triage high-risk trauma patients Eur J Trauma Emerg Surg. 2023 Feb; 49(1):273-279. . View in PubMed

Nationwide Analysis of Penetrating Thoracic Aortic Injury: Injury Patterns, Management, and Outcomes J Surg Res. 2023 04; 284:290-295. . View in PubMed

Antibiotic administration within 1 hour for open lower extremity fractures is not associated with decreased risk of infection J Trauma Acute Care Surg. 2023 02 01; 94(2):226-231. . View in PubMed

Timing of venous thromboembolism prophylaxis initiation after injury: Findings from the consensus conference to implement optimal VTE prophylaxis in trauma J Trauma Acute Care Surg. 2023 03 01; 94(3):484-489. . View in PubMed

Pseudoaneurysms after high-grade blunt solid organ injury and the utility of delayed computed tomography angiography Eur J Trauma Emerg Surg. 2022 Dec 14. . View in PubMed

Diagnosis and management of bile leaks after severe liver injury: A Trauma Association of Canada multicenter study J Trauma Acute Care Surg. 2022 Dec 01; 93(6):813-820. . View in PubMed

The impact of delayed time to first CT head on functional outcomes after blunt head trauma with moderately depressed GCS Eur J Trauma Emerg Surg. 2022 Dec; 48(6):4445-4450. . View in PubMed

Two Minutes for Roughing: A National Analysis of Ice Hockey Injuries from American Trauma Centers Am Surg. 2022 Nov 02; 31348221136577. . View in PubMed

Pseudoaneurysm Screening after Pediatric High Grade Solid Organ Injury Am Surg. 2022 Oct 25; 31348221136573. . View in PubMed

Falls from scaffolds: a nationwide analysis Eur J Trauma Emerg Surg. 2022 Oct 20. . View in PubMed

Predictors of Clinical Outcomes Following Laparoscopic Colectomy for Traumatic Injury Am Surg. 2022 Oct; 88(10):2486-2492. . View in PubMed

Injury Patterns Following Falls Down Open Manholes Am Surg. 2022 Oct; 88(10):2470-2474. . View in PubMed

Adolescent Trauma During the COVID Pandemic: Just Like Adults, Children, or Someone Else? Am Surg. 2022 Oct; 88(10):2429-2435.. View in PubMed

Complications Following Temporary Bilateral Internal Iliac Artery Ligation for Pelvic Hemorrhage Control in Trauma Am Surg. 2022 Oct; 88(10):2475-2479. . View in PubMed

Optimal timing of venous thromboembolic chemoprophylaxis initiation following blunt solid organ injury: meta-analysis and systematic review Eur J Trauma Emerg Surg. 2022 Jun; 48(3):2039-2046. . View in PubMed

Breast Trauma: A Decade of Surgical Interventions And Outcomes From us Trauma Centers Am Surg. 2022 Apr 27; 31348221096580. . View in PubMed

The impact of coronavirus 2019 on trauma Curr Opin Anaesthesiol. 2022 Apr 01; 35(2):154-159. . View in PubMed

Erratum to "Prehospital Narrow Pulse Pressure Predicts Need for Resuscitative Thoracotomy and Emergent Intervention after Trauma" [Journal of Surgical Research 268 (2021) 284-290] J Surg Res. 2022 Feb; 270:1. . View in PubMed

Penetrating injuries to the vertebral artery: interventions and outcomes from US Trauma Centers Eur J Trauma Emerg Surg. 2022 Feb; 48(1):481-488. . View in PubMed

Effects of the COVID-19 pandemic on pediatric trauma in Southern California Pediatr Surg Int. 2022 Feb; 38(2):307-315. . View in PubMed

Urgent Breast-Related Consults Seen by Acute Care Surgery at a Safety Net Hospital Am Surg. 2022 Jan 03; 31348211068011. . View in PubMed

Pain Management in Pediatric Trauma Clin Pediatr (Phila). 2022 12; 61(12):821-825. . View in PubMed

Decreased hospital length of stay and intensive care unit admissions for non-COVID blunt trauma patients during the COVID-19 pandemic Am J Surg. 2022 07; 224(1 Pt A):90-95. . View in PubMed

Blunt Trauma Massive Transfusion (B-MaT) Score: A Novel Scoring Tool J Surg Res. 2022 02; 270:321-326. . View in PubMed

Prehospital end-tidal carbon dioxide is predictive of death and massive transfusion in injured patients: An Eastern Association for Surgery of Trauma multicenter trial J Trauma Acute Care Surg. 2022 02 01; 92(2):355-361. . View in PubMed

Management of Complicated Appendicitis During Pregnancy in the US JAMA Netw Open. 2022 04 01; 5(4):e227555. . View in PubMed

Falls from ladders: Injury patterns and outcomes J Trauma Acute Care Surg. 2022 09 01; 93(3):323-331. . View in PubMed

Derivation and Validation of a Score Using Prehospital Data to Identify Adults With Trauma Requiring Early Laparotomy JAMA Netw Open. 2022 01 04; 5(1):e2145860. . View in PubMed

Gunshot wounds sustained during legal intervention versus those inflicted by civilians: A comparative analysis J Trauma Acute Care Surg. 2022 02 01; 92(2):436-441. . View in PubMed

Resuscitative Endovascular Balloon Occlusion of the Aorta in Penetrating Trauma J Am Coll Surg. 2022 05 01; 234(5):872-880. . View in PubMed

Prospective evaluation of the selective nonoperative management of abdominal stab wounds: When is it safe to discharge? J Trauma Acute Care Surg. 2022 11 01; 93(5):639-643.. View in PubMed

Excluding Hollow Viscus Injury for Abdominal Seat Belt Sign Using Computed Tomography JAMA Surg. 2022 09 01; 157(9):771-778. . View in PubMed

Invited Commentary: Identifying the Optimal Model for Night Radiology Coverage in Trauma J Am Coll Surg. 2022 09 01; 235(3):507-509. . View in PubMed

Prehospital Variables Alone Can Predict Mortality After Blunt Trauma: A Novel Scoring Tool Am Surg. 2021 Dec; 87(10):1638-1643. . View in PubMed

Association of Body Mass Index on Injuries and Outcomes After Ground-Level Falls Am Surg. 2021 Dec; 87(10):1584-1588. . View in PubMed

Hypoglycemia in a Surgical Intensive Care Unit Am Surg. 2021 Dec; 87(10):1580-1583. . View in PubMed

Non-lethal weapon: Injury patterns and imaging correlates for firearm alternatives Clin Imaging. 2021 Nov; 79:165-172. . View in PubMed

COVID-19 in trauma: a propensity-matched analysis of COVID and non-COVID trauma patients Eur J Trauma Emerg Surg. 2021 Oct; 47(5):1335-1342. . View in PubMed

The impact of delayed time to first CT head in traumatic brain injury Eur J Trauma Emerg Surg. 2021 Oct; 47(5):1511-1516. . View in PubMed

Longer Prehospital Time Decreases Reliability of Vital Signs in the Field: A Dual Center Study Am Surg. 2021 Jun; 87(6):943-948. . View in PubMed

Intra-Abdominal Hemorrhage Control: The Need for Routine Four-Quadrant Packing Explored World J Surg. 2021 Apr; 45(4):1014-1020. . View in PubMed

Prehospital Narrow Pulse Pressure Predicts Need for Resuscitative Thoracotomy and Emergent Intervention After Trauma J Surg Res. 2021 12; 268:284-290. . View in PubMed

Surviving Nonsurvivable Injuries: Patients Who Elude the 'Lethal' Abbreviated Injury Scale Score of Six J Surg Res. 2021 12; 268:616-622. . View in PubMed

The Primary Spontaneous Pneumothorax trial: A critical appraisal from the surgeon's perspective J Thorac Cardiovasc Surg. 2021 11; 162(5):1428-1432. . View in PubMed

The coronavirus disease 2019 (COVID-19) stay-at-home order's unequal effects on trauma volume by insurance status in Southern California Surgery. 2021 09; 170(3):962-968. . View in PubMed

Hangings: Lessons Learned from the Coroner's Office J Surg Res. 2021 08; 264:158-162. . View in PubMed

Practical assessment of different saw types for field amputation: A cadaver-based study Am J Emerg Med. 2021 07; 45:11-16. . View in PubMed

Association Between Trimester and Outcomes after Cholecystectomy During PregnancyJ Am Coll Surg. 2021 07; 233(1):29-37. e1. . View in PubMed

Selective Nonoperative Management of Abdominal Shotgun Wounds J Surg Res. 2021 03; 259:79-85. . View in PubMed

J Surg Res. 2021 02; 258:272-277. . View in PubMed

Changes in traumatic mechanisms of injury in Southern California related to COVID-19: Penetrating trauma as a second pandemic J Trauma Acute Care Surg. 2021 04 01; 90(4):714-721. . View in PubMed

Drug and alcohol positivity of traumatically injured patients related to COVID-19 stay-at-home orders Am J Drug Alcohol Abuse. 2021 09 03; 47(5):605-611. . View in PubMed

Contemporary utility of diagnostic peritoneal aspiration in trauma J Trauma Acute Care Surg. 2021 11 01; 91(5):814-819. . View in PubMed

Injury and treatment patterns of ballistic pelvic fractures by anatomic location Eur J Orthop Surg Traumatol. 2021 Jan; 31(1):111-119. . View in PubMed

Retained bullet fragments after nonfatal gunshot wounds: epidemiology and outcomes J Trauma Acute Care Surg. 2021 06 01; 90(6):973-979. . View in PubMed

Impact of obesity on outcomes after abdominal gunshot injury J Trauma Acute Care Surg. 2021 04 01; 90(4):680-684. . View in PubMed

The diagnostic dilemma of shotgun injuries Eur J Trauma Emerg Surg. 2020 Dec; 46(6):1351-1356. . View in PubMed

Complications Following Brachial Arterial Catheterization in the Surgical Intensive Care Unit Am Surg. 2020 Oct; 86(10):1260-1263. . View in PubMed

Comparison of trauma resuscitation practices by critical care anesthesiologists and non-critical care anesthesiologists J Clin Anesth. 2020 Oct; 65:109890. . View in PubMed

Frostbite injuries: independent predictors of outcomes Turk J Surg. 2020 Jun; 36(2):218-223. . View in PubMed

Prehospital Vital Signs Accurately Predict Initial Emergency Department Vital Signs Prehosp Disaster Med. 2020 Jun; 35(3):254-259. . View in PubMed

Shotgun Wounds: Nationwide Trends in Epidemiology, Injury Patterns, and Outcomes from US Trauma Centers J Emerg Med. 2020 May; 58(5):719-724. . View in PubMed

Concomitant bladder and rectal injuries: Results from the American Association for the Surgery of Trauma Multicenter Rectal Injury Study Group J Trauma Acute Care Surg. 2020 Feb; 88(2):286-291. . View in PubMed

Near-Hanging Injuries: Understanding Outcomes Among the Critically Ill Chest. 2020 12; 158(6):2243-2244. . View in PubMed

Fluid Resuscitation and Vasopressors in Septic Shock: The Importance of Filling the Tank While Squeezing the Pipes Crit Care Med. 2020 10; 48(10):1533-1535. . View in PubMed

The Impact of Seat Belt Use in Pregnancy on Injuries and Outcomes After Motor Vehicle Collisions J Surg Res. 2020 10; 254:96-101. . View in PubMed

Radiologic predictors of in-hospital mortality after traumatic craniocervical dissociation J Trauma Acute Care Surg. 2020 09; 89(3):565-569. . View in PubMed

Nationwide trends in the use of subtotal cholecystectomy for acute cholecystitis Surgery. 2020 03; 167(3):569-574. . View in PubMed

Contemporary Trends and Outcomes of Blunt Traumatic Colon Injuries Requiring Resection J Surg Res. 2020 03; 247:251-257. . View in PubMed

Rectal Injury After Foreign Body Insertion: Secondary Analysis From the AAST Contemporary Management of Rectal Injuries Study Group J Surg Res. 2020 03; 247:541-546. . View in PubMed

Trauma Team Activation at a Level I Trauma Center in Southern California: Time of Day Matters Am Surg. 2019 Oct 01; 85(10):1142-1145. . View in PubMed

Youth and Young Adult Victims of Interpersonal Violence at LA County + USC Medical Center: A Review of Epidemiology and Recidivism Am Surg. 2019 Oct 01; 85(10):1166-1170. . View in PubMed

Gunshot wounds to the liver: No longer a mandatory operation J Trauma Acute Care Surg. 2019 Aug; 87(2):350-355. . View in PubMed

Old Age With a Traumatic Mechanism of Injury Should Be a Trauma Team Activation Criterion J Emerg Med. 2019 Aug; 57(2):151-155. . View in PubMed

First Measurement of Charm Production in its Fixed-Target Configuration at the LHC Phys Rev Lett. 2019 Apr 05; 122(13):132002. . View in PubMed

Measurement of the Charm-Mixing Parameter y_{CP} Phys Rev Lett. 2019 Jan 11; 122(1):011802. . View in PubMed

Phys Rev Lett. 2019 Jan 11; 122(1):012001. . View in PubMed

Selective nonoperative management of renal gunshot wounds J Trauma Acute Care Surg. 2019 12; 87(6):1301-1307. . View in PubMed

World J Surg. 2019 11; 43(11):2797-2803. . View in PubMed

Undertriaged trauma patients: Who are we missing? J Trauma Acute Care Surg. 2019 10; 87(4):865-869.. View in PubMed

Current Burden of Gunshot Wound Injuries at Two Los Angeles County Level I Trauma Centers J Am Coll Surg. 2019 08; 229(2):141-149. . View in PubMed

Nosocomial Pneumonia in the ICU: Still More Questions Than Answers Crit Care Med. 2019 03; 47(3):472-473. . View in PubMed

Near hangings: Epidemiology, injuries, and investigations J Trauma Acute Care Surg. 2019 03; 86(3):454-457. . View in PubMed

Falls in the Bathroom: A Mechanism of Injury for All Ages J Surg Res. 2019 02; 234:283-286. . View in PubMed

Intraoperative Consultations to Acute Care Surgery at a Level I Trauma Center Am Surg. 2019 Jan 01; 85(1):82-85. . View in PubMed

Measurement of Antiproton Production in p-He Collisions at sqrt[s_{NN}]=110? GeV. Phys Rev Lett. 2018 Nov 30; 121(22):222001.. View in PubMed

First Observation of the Doubly Charmed Baryon Decay? _{c}^{+}p^{+}. Phys Rev Lett. 2018 Oct 19; 121(16):162002.. View in PubMed

Calculated Decisions: Focused Assessment With Sonography for Trauma (FAST) Emerg Med Pract 2018 Sep 01; 18(Suppl 3):1-3. . View in PubMed

Phys Rev Lett. 2018 Aug 31; 121(9):091801. . View in PubMed

Measurement of the O_{c}^{0} Baryon Lifetime Phys Rev Lett. 2018 Aug 31; 121(9):092003. . View in PubMed

Phys Rev Lett. 2018 Aug 17; 121(7):072002. . View in PubMed

Measurement of the Lifetime of the Doubly Charmed Baryon? _{cc}^{++}. Phys Rev Lett. 2018 Aug 03; 121(5):052002.. View in PubMed

Extremity compartment syndrome Curr Probl Surg. 2018 Jul; 55(7):256-273. . View in PubMed

Phys Rev Lett. 2018 Jun 29; 120(26):261801. . View in PubMed

Evidence for the Rare Decay S^{+}? pµ^{+}µ^{-}. Phys Rev Lett. 2018 Jun 01; 120(22):221803.. View in PubMed

Phys Rev Lett. 2018 Apr 27; 120(17):171802. . View in PubMed

Measurement of the Ratio of Branching Fractions B(B_{c}^{+}? _{µ}). Phys Rev Lett. 2018 Mar 23; 120(12):121801.. View in PubMed

Search for Dark Photons Produced in 13 TeV pp Collisions Phys Rev Lett. 2018 Feb 09; 120(6):061801. . View in PubMed

Critical Decisions in the Management of Thoracic Trauma Emerg Med Clin North Am. 2018 Feb; 36(1):135-147. . View in PubMed

Traumatic rectal injuries: Is the combination of computed tomography and rigid proctoscopy sufficient? J Trauma Acute Care Surg. 2018 12; 85(6):1033-1037.. View in PubMed

Independent predictors of survival after traumatic atlanto-occipital dissociation J Trauma Acute Care Surg. 2018 08; 85(2):375-379. . View in PubMed

Detection of traumatic pancreatic duct disruption in the modern era Am J Surg. 2018 08; 216(2):299-303. . View in PubMed

Management of cervical tracheoesophageal injuries: A 2018 EAST Master Class Video Presentation J Trauma Acute Care Surg. 2018 07; 85(1):220-223. . View in PubMed

The combined utility of extended focused assessment with sonography for trauma and chest x-ray in blunt thoracic trauma J Trauma Acute Care Surg. 2018 07; 85(1):113-117. . View in PubMed

The contemporary timing of trauma deaths J Trauma Acute Care Surg. 2018 06; 84(6):893-899. . View in PubMed

Effect of door-to-angioembolization time on mortality in pelvic fracture: Every hour of delay counts J Trauma Acute Care Surg. 2018 05; 84(5):685-692. . View in PubMed

Contemporary management of rectal injuries at Level I trauma centers: The results of an American Association for the Surgery of Trauma multi-institutional study J Trauma Acute Care Surg. 2018 02; 84(2):225-233. . View in PubMed

Spleen-preserving distal pancreatectomy in trauma J Trauma Acute Care Surg. 2018 01; 84(1):118-122. . View in PubMed

Eur Phys J C Part Fields. 2018; 78(12):1019. . View in PubMed

Studies of the resonance structure in D0? K±p±p±p± decays. Eur Phys J C Part Fields. 2018; 78(6):443.. View in PubMed

Search for lepton-flavour-violating decays of Higgs-like bosons Eur Phys J C Part Fields. 2018; 78(12):1008. . View in PubMed

First Observation of the Rare Purely Baryonic Decay B^{0}? pp[over ¯]. Phys Rev Lett. 2017 Dec 08; 119(23):232001.. View in PubMed

Observation of D^{0} Meson Decays to p^{+}p^{-}µ^{+}µ^{-} and K^{+}K^{-}µ^{+}µ^{-} Final States Phys Rev Lett. 2017 Nov 03; 119(18):181805. . View in PubMed

Phys Rev Lett. 2017 Nov 03; 119(18):181807. . View in PubMed

Delta Shock Index in the Emergency Department Predicts Mortality and Need for Blood Transfusion in Trauma Patients Am Surg. 2017 Oct 01; 83(10):1059-1062. . View in PubMed

Observation of the Doubly Charmed Baryon? _{cc}^{++}. Phys Rev Lett. 2017 Sep 15; 119(11):112001.. View in PubMed

Measurement of B_{s}^{0} and D_{s}^{-} Meson Lifetimes Phys Rev Lett. 2017 Sep 08; 119(10):101801. . View in PubMed

Observation of the Decays? _{c2}pK^{-}. Phys Rev Lett. 2017 Aug 11; 119(6):062001.. View in PubMed

First Observation of a Baryonic B_{s}^{0} Decay Phys Rev Lett. 2017 Jul 28; 119(4):041802. . View in PubMed

Phys Rev Lett. 2017 Jun 30; 118(26):261803. . View in PubMed

Search for the Decays B_{s}^{0}? t^{+}t^{-}. Phys Rev Lett. 2017 Jun 23; 118(25):251802.. View in PubMed

Phys Rev Lett. 2017 May 12; 118(19):192001. . View in PubMed

Phys Rev Lett. 2017 May 12; 118(19):191801. . View in PubMed

Observation of Five New Narrow O_{c}^{0} States Decaying to? _{c}^{+}K^{-}. Phys Rev Lett. 2017 May 05; 118(18):182001.. View in PubMed

Phys Rev Lett. 2017 Mar 17; 118(11):111803. . View in PubMed

Observation of the Annihilation Decay Mode B^{0}? K^{+}K^{-}. Phys Rev Lett. 2017 Feb 24; 118(8):081801.. View in PubMed

Observation of the Decay? pK^{-}K^{-}. Phys Rev Lett. 2017 Feb 17; 118(7):071801.. View in PubMed

Measurement of the b-Quark Production Cross Section in 7 and 13 TeV pp Collisions Phys Rev Lett. 2017 Feb 03; 118(5):052002. . View in PubMed

Observation of J/? K^{+} Decays. Phys Rev Lett. 2017 Jan 13; 118(2):022003.. View in PubMed

First Experimental Study of Photon Polarization in Radiative B_{s}^{0} Decays Phys Rev Lett. 2017 Jan 13; 118(2):021801. . View in PubMed

Injuries sustained during contact with law enforcement: An analysis from US trauma centers J Trauma Acute Care Surg. 2017 12; 83(6):1124-1128. . View in PubMed

Defining the gastroesophageal junction in trauma: Epidemiology and management of a challenging injury J Trauma Acute Care Surg. 2017 11; 83(5):798-802. . View in PubMed

Search for massive long-lived particles decaying semileptonically in the LHCb detector Eur Phys J C Part Fields. 2017; 77(4):224. . View in PubMed

New algorithms for identifying the flavour of [Formula: see text] mesons using pions and protons Eur Phys J C Part Fields. 2017; 77(4):238. . View in PubMed

Improved limit on the branching fraction of the rare decay KS0? µ+µ-. Eur Phys J C Part Fields. 2017; 77(10):678.. View in PubMed

Pneumonia in Trauma Patients Curr Trauma Rep. 2017; 3(4):308-314. . View in PubMed

Updated search for long-lived particles decaying to jet pairs Eur Phys J C Part Fields. 2017; 77(12):812. . View in PubMed

Observation of [Formula: see text] and [Formula: see text] decays Eur Phys J C Part Fields. 2017; 77(2):72. . View in PubMed

Measurement of the phase difference between short- and long-distance amplitudes in the [Formula: see text] decay Eur Phys J C Part Fields. 2017; 77(3):161. . View in PubMed

Study of charmonium production in b -hadron decays and first evidence for the decay Bs0? . Eur Phys J C Part Fields. 2017; 77(9):609.. View in PubMed

Phys Rev Lett. 2016 Dec 23; 117(26):261801. . View in PubMed

Search for Structure in the B_{s}^{0}p^{±} Invariant Mass Spectrum Phys Rev Lett. 2016 Oct 07; 117(15):152003. . View in PubMed

The diagnostic yield of commonly used investigations in pelvic gunshot wounds J Trauma Acute Care Surg. 2016 10; 81(4):692-8. . View in PubMed

Traumatic spinal cord injury without initial MRI abnormality: SCIWORA revisited Can J Neurol Sci. 2011 Mar; 38(2):364-6. . View in PubMed

Complex autoerotic death with full body wrapping in a plastic body bag J Forensic Sci. 2007 Jul; 52(4):954-6. . View in PubMed

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