Publications by authors named "Alistair Chapman"

Current literature demonstrates prophylactic enoxaparin to be efficacious in reducing venous thromboembolism (VTE) rates without significantly increasing risk for bleeding complications. Despite this evidence, prophylactic enoxaparin doses are frequently withheld for surgery or procedures. This exploratory study aims to quantify the risk of a VTE event in trauma patients associated with missed doses of prophylactic enoxaparin.

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Background: Trauma patients are at increased risk for venous thromboembolism events (VTEs). The decision of when to initiate VTE chemoprophylaxis (VTEP) and with what agent remains controversial in patients with severe traumatic brain injury (TBI).

Methods: This comparative effectiveness study evaluated the impact of timing and agent for VTEP on outcomes for patients with severe TBI (Abbreviated Injury Scale head score of 3, 4, or 5).

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This study aims to compare outcomes of rib fracture patients with and without COVID-19 in Michigan. Data from the Michigan Trauma Quality Improvement Program (MTQIP) identified adults hospitalized from January 1, 2020, to October 31, 2022, with at least one rib fracture and a completed COVID-19 test on admission. Patients were propensity score matched 1:1 using 20 variables.

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Background: Cervical spine fractures are associated with high mortality in elderly patients. This study aims to identify patient-related and in-hospital factors contributing to this mortality.

Methods: A 3-year retrospective study of 235 patients aged 65+ presenting with cervical spine fractures was performed.

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Background: Emergent decompressive craniotomy/craniectomy can be a lifesaving surgical intervention for select patients with traumatic brain injury. Prompt management is critical as early decompression can impact traumatic brain injury outcomes.

Objective: This study aims to describe the feasibility and clinical impact of a new pathway for transporting patients with severe traumatic brain injury directly to the operating room from the trauma bay for decompressive craniotomy/craniectomy.

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Introduction: Repair of multiple lower extremity long bone fractures with intramedullary nail (IMN) fixation is associated with significant cardiopulmonary burden and may result in mortality. These patients are at an increased risk for fat embolism syndrome, pulmonary embolism, Acute Respiratory Distress Syndrome (ARDS), and pneumonia. No standardized guidelines exist to guide treatment of these patients.

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Introduction: Incidental findings on comprehensive imaging in the adult trauma population occur at rates as high as 54.8%. We sought to determine the incidence of potentially malignant or pre-malignant incidental findings in a high-volume level 1 trauma center and to evaluate follow-up recommendations.

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Introduction: The impact of a visual pain medication schedule on opioid use among hospitalized trauma patients is unknown. We examined whether removal of this displayed schedule would decrease oral morphine equivalent (OME) use.

Methods: This retrospective cohort study compared OME use in trauma patients in the inpatient setting before and after removing the patient-facing pain medication schedule that is typically displayed on the patient's white board for all trauma admissions.

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Introduction: Falls are the second leading cause of trauma-related deaths worldwide. Identifying fall risk patients and initiating interventions reduces injuries and mortality, particularly in the elderly. The primary aim of this retrospective study was to identify missed opportunities for fall risk identification and intervention for geriatric trauma patients.

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Patients with traumatic brain injury (TBI) are at risk for seizures and other abnormalities that can have permanent adverse effects on the brain. We aimed to report the incidence of seizures and continuous EEG (cEEG) abnormalities after TBI and identify any risk factors associated with the development of these abnormalities. This retrospective study identified 245 adult patients with mild to severe TBI who had a cEEG performed within one week of admission to a Midwest Level 1 Trauma Center between July 2014 and July 2019.

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Background: There is no agreed upon triage criteria to identify traumatic rib fracture patients at the highest risk for decline. We developed a comprehensive triage tool that assigns patients to high, moderate, and low risk categories. The primary outcome of our study was to evaluate unplanned intensive care unit (ICU) admissions.

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Objective: Tranexamic acid (TXA) has demonstrated a reduction in all-cause mortality in trauma patients with hemorrhage. Administering TXA in the prehospital setting presents unique challenges because the identification of bleeding is based on clinical suspicion without advanced imaging or diagnostic tools. The objective of this study was to examine whether prehospital suspicion of bleeding is validated by in-hospital computed tomographic imaging and examination and to determine if patients received TXA in the absence of hemorrhage.

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Background: Post-operative prescription of opioids has fueled an increase in opioid-associated morbidity and mortality. Alternative post-operative pain control with non-opioid pharmaceuticals can help counteract this effect. We investigated a non-opioid pain management protocol following emergent laparoscopic appendectomy and laparoscopic cholecystectomy.

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Introduction: Ultrasound is the gold standard for workup of cholecystitis in the emergency department, and findings heavily influence clinical decision-making. Patients with negative imaging for acute cholecystitis may be inappropriately sent home. The purpose of our study was to review the pathology and outcomes of patients presenting with biliary pain and negative ultrasound findings of acute cholecystitis.

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Background: Sarcopenia is associated with increased morbidity and mortality in the trauma patient. The primary objective of this study was to determine the relationship of psoas cross sectional area with hospital mortality in patients with rib fractures over the age of 55 years.

Materials And Methods: We retrospectively reviewed 1223 patients presenting to a Level 1 Trauma Center between 1/1/2002 and 1/31/2019.

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Introduction: Motorcycles are colloquially referred to as "donorcycles" among medical staff. However, the actual impact of helmet laws and helmet use on organ donation is unknown. Michigan's 35-year-old universal helmet law (UHL) was repealed in April 2012 and replaced by a partial-helmet law.

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Background: Nasogastric tube placement is widely taught, and tube maintenance relies on astute nursing care with adherence to both institutional and evidence-based recommendations. However, precise adherence to current recommendations relies on knowledge base regarding the identification of malfunctioning gastric drainage tubes. Troubleshooting skills are crucial in maintaining patient safety and recognizing malfunction.

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A quality improvement project was undertaken. The objectives of this study were to describe an original case evaluation tool, discuss barriers encountered, present a standardized simulation course, and evaluate the efficacy of this course. Resuscitative endovascular balloon occlusion of the aorta (REBOA) is an emerging adjunct in the trauma bay for patients with noncompressible subdiaphragmatic hemorrhage.

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Background: Traumatic brain injury (TBI) is associated with one-third of all deaths from trauma. Preinjury exposure to cardiovascular drugs may affect TBI outcomes. Angiotensin-converting enzyme inhibitors (ACEIs) exacerbate brain cell damage and worsen functional outcomes in the laboratory setting.

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Background: Surgical stabilization of rib fractures (SSRF) is increasingly used for severe rib fractures/flail chest. There are no reports discussing mechanisms of failure of implanted hardware, its clinical presentation, or consequences. The purpose of this study was to evaluate the incidence, presenting signs, and clinical sequela of hardware failure after SSRF.

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Background: Immediately fatal motorcycle crashes have not been well characterized. This study catalogues injuries sustained in fatal motorcycle crashes and assesses the impact of crash conditions on injury patterns.

Methods: Autopsy records from the office of the medical examiner of Kent County, MI and publicly available traffic reports were queried for information pertaining to motorcyclists declared dead on-scene between January 1, 2007, and December 31, 2016.

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Objective: The treadmill is the most commonly used aerobic exercise equipment with studies showing many gym-related injuries are attributed to treadmills. The purpose of this study is to examine the incidence of treadmill-associated head injuries within the US.

Methods: Retrospective data from 1997 to 2014 was collected via the National Electronic Injury Surveillance System, which provides annual es7timates of injuries associated with consumer products.

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Background: In April of 2012, Michigan repealed its 35-year-old universal motorcycle helmet law in favor of a partial helmet law, which permits motorcyclists older than 21 years old with sufficient insurance and experience to drive un-helmeted. We evaluated the clinical impact of the repeal.

Methods: The Michigan Trauma Quality Improvement Program's trauma database was queried for motorcycle crash patients between 1/1/09-4/12/12 and between 4/13/12-12/31/14.

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