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WebM&M: Case Studies

WebM&M (Morbidity & Mortality Rounds on the Web) features expert analysis of medical errors reported anonymously by our readers. Spotlight Cases include interactive learning modules available for CME. Commentaries are written by patient safety experts and published monthly.

Have you encountered medical errors or patient safety issues? Submit your case below to help the medical community and to prevent similar errors in the future.

This Month's WebM&Ms

Update Date: November 30, 2023
Luciano Sanchez, PharmD and Patrick Romano, MD, MPH | November 30, 2023

An 81-year-old man was admitted to the intensive care unit (ICU) with a gastrointestinal bleed and referred for a diagnostic colonoscopy. The nurse preparing... Read More

Have you encountered medical errors or patient safety issues?
Have you encountered medical errors or patient safety issues? Submit your case below to help the medical community and to prevent similar errors in the future.

All WebM&M: Case Studies (27)

Displaying 1 - 20 of 27 Results
Rachel Ann Hight, MD, FACS | November 29, 2023

This case describes a 55-year-old woman who sustained critical injuries after a motor vehicle crash and had a lengthy hospitalization. On hospital day 30, a surgeon placed a percutaneous endoscopic gastrostomy (PEG) tube in the intensive care unit (ICU) after computed tomography (CT) scan showed no interposed bowel between the stomach and the anterior abdominal wall.  After the uncomplicated PEG placement, the surgeon cleared the patient’s team to advance tube feeds as tolerated. After several weeks of poorly tolerated tube feedings, the interventional radiology team reviewed a CT scan which had been obtained by another service 6 days after the PEG was placed and noted (for the first time) that the gastrostomy tube traversed the liver. Insufficient communication and fragmented care coordination across care settings contributed to poor management of the malpositioned PEG tube. The commentary underscores the importance of clear documentation of complications, highlights best practices to mitigate risks during patient care transition, and the importance of using multiple communication approaches to ensure appropriate continuity of care.

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Leah Timbag, MD, MPH, Voltaire R. Sinigayan, MD, and Mithu Molla, MD, MBA | September 27, 2023

This case describes the failure to identify a brewing abdominal process, which over the span of hours led to fulminant sepsis with rapid clinical deterioration and eventual demise. The patient’s ascitic fluid cultures and autopsy findings confirmed bowel perforation, but this diagnosis was never explicitly considered. The commentary discusses the importance of early identification of sepsis, the role of biomarkers and risk scores in conjunction with bedside examinations to assess patients with suspected sepsis, and approaches to improve the prognosis of patients in septic shock, such as protocolized sepsis bundles.

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Sarah Marshall, MD and Nina M. Boe, MD| August 30, 2023

A 31-year-old pregnant patient with type 1 diabetes on an insulin pump was hospitalized for euglycemic diabetic ketoacidosis (DKA). She was treated for dehydration and vomiting, but not aggressively enough, and her metabolic acidosis worsened over several days. The primary team hesitated to prescribe medications safe in pregnancy and delayed reaching out to the Maternal Fetal Medicine (MFM) consultant, who made recommendations but did not ensure that the primary team received and understood the information. The commentary highlights how breakdowns in communication amongst providers can lead to medical errors and prolonged hospitalization and how the principles of team-based care, communication, and a culture of safety can improve care in complex health care situations.

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Theresa Duong, MD, Noelle Boctor, MD, and James Bourgeois, OD, MD| July 31, 2023

This case describes a 65-year-old man with alcohol use disorder who presented to a hospital 36 hours after his last alcoholic drink and was found to be in severe alcohol withdrawal. The patient’s Clinical Institute Withdrawal Assessment (CIWA) score was very high, indicating signs and symptoms of severe alcohol withdrawal. He was treated with symptom-triggered dosing of benzodiazepines utilizing the CIWA protocol and dexmedetomidine continuous infusion. The treating team had planned to wean the infusion; however, the following day, the patient was noted to be obtunded on a high dose of dexmedetomidine. He remained somnolent for two additional days and subsequently developed aspiration pneumonia and Clostridioides difficile colitis, which further prolonged his hospital stay and strained relationships among the patient's family, the nursing staff and medical team. The commentary reviews the medications commonly used to treat alcohol withdrawal and the risks associated with these medications, the use of standardized medication order sets for continuous weight-based infusions within the intensive care unit, and ways to minimize clinician bias in assessing and treating substance use disorders.

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Elizabeth Gould, NP-C, CORLN, Kathleen M Carlsen, PA, Brooks T Kuhn, MD, MAS, and Jonathan Trask, RN| June 28, 2023

A 56-year-old man was admitted to the hospital and required mechanical ventilation due to COVID-19-related pneumonia and acute respiratory failure. The care team performed a tracheostomy percutaneously at the bedside with some difficulty. The tracheostomy tube was secured, inspected via bronchoscopy, and properly sutured. During the next few days, the respiratory therapist noticed a leak that required additional inflation of the cuff to maintain an adequate seal. Before the care team could change the tracheostomy, the tracheal cuff burst, and the patient developed hypotension and required 100% inhaled oxygen via the ventilator. The commentary summarizes best practices regarding proper tracheostomy tube choice and sizing to prevent leaks around cuffs, the importance of staff education on airway cuff pressure monitoring, and the role of multidisciplinary tracheostomy teams to optimize tracheostomy care.

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A 25-year-old obese patient required an emergency cesarean delivery. As the obstetric team was in a hurry to deliver the baby, the team huddle was rushed. After the delivery, the anesthesia care provider discovered that the patient had received subcutaneous enoxaparin 40 mg four hours preoperatively, which was not mentioned by the obstetric team during the previous huddle. The patient developed a dense, persistent motor and sensory block of the lower limbs at 6 to 8 hours after delivery, which gradually wore off and the patient recovered without any permanent sensory or motor impairment. The commentary highlights the importance of preoperative huddles and pre-incision time out checklists to improve patient outcomes as well as the role of emergency cesarean simulation training for obstetric, anesthesia and nursing care teams.

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Commentary by Michael Leonardo Amashta, MD, and David K. Barnes, MD, FACEP | April 26, 2023

This case involves a procedural sedation error in a 3-year-old patient who presented to the Emergency Department with a left posterior hip dislocation. The commentary summarizes the indications and risks of procedural sedation in non-surgical settings and highlights the value of implementing system-wide safety protocols and practices to prevent medication administration errors during high-risk procedures.

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An adult woman with a history of suicidal ideation was taking prescribed antidepressants, but later required admission to the hospital after overdosing on her prescribed medications. A consulting psychiatrist evaluated the patient but recommended sending her home on a benzodiazepine alone, under observation by her mother. The commentary discusses challenges in assessing suicide risk and establishing the underlying diagnosis after a suicide attempt, the importance of managing relationships between psychiatric consultants and other physicians, and the role of appropriate pharmacotherapy and follow-up after the patient has medically recovered from a suicide attempt.

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Jonathan Trask, RN, Kathleen M. Carlsen, PA, Brooks T. Kuhn, MD| March 15, 2023

A 72-year-old man was diagnosed with COVID-19 pneumonia and ileus, and admitted to a specialized COVID care unit. A nasogastric tube (NGT) was placed, supplemental oxygen was provided, and oral feedings were withheld. Early in his hospital stay, the patient developed hyperactive delirium and pulled out his NGT. Haloperidol was ordered for use as needed (“prn”) and the nurse was asked to replace the NGT and confirm placement by X-ray. The bedside and charge nurses had difficulty placing the NGT and the X-ray confirmation was not done. Eight hours later, the patient became hypotensive and hypoxemic and emergent CT revealed a gastric perforation. The patient was transferred to the intensive care unit and ultimately required endotracheal intubation with mechanical ventilation. The commentary discusses the complications associated with nasogastric tube insertion, assessing and treating acute agitation secondary to delirium, and the importance of clear communication during shift changes and handoffs.

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Craig Keenan, MD, Scott MacDonald, MD, Ashley Takeshita, and Dale Sapell, PharmD | February 1, 2023

A 38-year-old man with end-stage renal disease (ESRD) on chronic hemodialysis was admitted for nonhealing, infected lower leg wounds and underwent a below-knee amputation. He suffered from postoperative pain at the operative stump and was treated for four days with regional nerve blocks, as well as gabapentin, intermittent intravenous hydromorphone (which was transitioned to oral oxycodone) and oral hydromorphone. The patient subsequently developed severe metabolic encephalopathy due to overdose of both gabapentin and opiates and failure to reduce medication doses in the setting of ESRD. The commentary discusses pain management and the signs of gabapentin toxicity in patients with renal dysfunction, as well the implications of clinical decision support-related alert fatigue and approaches to reduce adverse events arising from drug-disease interactions.

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Claire E. Graves, MD and Maggie A. Kuhn, MD, MAS | February 1, 2023

These cases describe the rare but dangerous complication of hematoma following neck surgery. The first case involves a patient with a history of spinal stenosis who was admitted for elective cervical discectomy and cervical disc arthroplasty who went into cardiopulmonary arrest three days post-discharge and could not be intubated due to excessive airway swelling and could not be resuscitated. Autopsy revealed a large hematoma at the operative site, causing compression of the upper airway, which was the suspected cause of respiratory and cardiac arrest. In the second case, the patient underwent an uncomplicated elective thyroid lobectomy but developed increased neck pain and swelling the next day. A large hematoma was identified, and the patient was taken emergently to the operating room for evacuation. The commentary discusses risk factors for postoperative cervical hematomas, the importance of prompt identification and evaluation of cervical hematomas in the early postoperative period, and approaches for managing postoperative cervical hematomas.

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Narath Carlile, MD, MPH, Clyde Lanford Smith, MD, MPH, DTM&H, James H. Maguire, MD, and Gordon D. Schiff, MD | December 14, 2022

This case describes a man in his 70s with a history of multiple myeloma and multiple healthcare encounters for diarrhea in the previous five years, which had always been attributed to viral or unknown causes, without any microbiologic or serologic testing. The patient was admitted to the hospital with gastrointestinal symptoms and diagnosed with cholecystitis and gangrenous gallbladder. Two months after his admission for cholecystitis, he was readmitted for severe vomiting and hypotension. An upper gastrointestinal endoscopy with biopsy unexpectedly showed that his duodenum was heavily infiltrated with a parasitic helminth (worm) called Strongyloides stercoralis. He was treated with the anti-parasitic drug ivermectin and eventually improved enough to be discharged from the hospital. The commentary summarizes factors contributing to the missed diagnosis of strongyloidiasis, potential consequences of a failure to diagnose this infection, and approaches to identify patients who should be tested for Strongyloides infection.

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Brooks T Kuhn, MD, and Florence Chau-Etchepare, MD| October 27, 2022

A 47-year-old man underwent a navigational bronchoscopy with transbronchial biospy under general anesthesia without complications. The patient was transferred to the post-acute care unit (PACU) for observation and a routine post-procedure chest x-ray (CXR). After the CXR was taken, the attending physician spoke to the patient and discussed his impressions, although he had not yet seen the CXR. He left the PACU without communicating with the bedside nurse, who was caring for other patients. The patient informed the nurse that the attending physician had no concerns. While preparing the patient for discharge, the nurse paged the fellow requesting discharge orders. The fellow assumed that the attending physician had reviewed the CXR and submitted the discharge orders as requested. Thirty minutes after the patient was discharged the radiologist called the care team to alert them to the finding of pneumothorax on the post-procedure CXR. The commentary summarizes complications associated with bronchoscopy and strategies to improve perioperative safety.

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A 49-year-old woman presented to an Emergency Department (ED) with abdominal pain nine hours after discharge following outpatient laparoscopic left oophorectomy. The left oophorectomy procedure involved an umbilical port placed using an Optiport visual trocar, a suprapubic port, and two additional ports laterally. The operative note mentioned no visible injury upon entry into the abdominal cavity, but there were extensive adhesions in the pelvis. Nine hours after discharge, the patient presented to another hospital due to increasing pain, nausea, and fever. The patient underwent a laparotomy and the surgical team found fecal contamination upon entry into the peritoneal cavity; the surgeons concluded that the most plausible explanation was a trocar injury. The commentary discusses the risk of vascular and bowel injury during peritoneal access for laparoscopy and the importance of patient history and abdominal anatomy when considering approaches to abdominal entry.

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Anamaria Robles, MD, and Garth Utter, MD, MSc | August 31, 2022

A 49-year-old woman was referred by per primary care physician (PCP) to a gastroenterologist for recurrent bouts of abdominal pain, occasional vomiting, and diarrhea. Colonoscopy, esophagogastroduodenoscopy, and x-rays were interpreted as normal, and the patient was reassured that her symptoms should abate. The patient was seen by her PCP and visited the Emergency Department (ED) several times over the next six months. At each ED visit, the patient’s labs were normal and no imaging was performed. A second gastroenterologist suggested a diagnosis of intestinal ischemia to the patient, her primary gastroenterologist, her PCP, and endocrinologist but the other physicians did not follow up on the possibility of mesenteric ischemia. On another ED visit, the second gastroenterologist consulted a surgeon, and a mesenteric angiogram was performed, confirming a diagnosis of mesenteric ischemia with gangrenous intestines. The patient underwent near-total intestinal resection, developed post-operative infections requiring additional operations, experienced cachexia despite parenteral nutrition, and died of sepsis 3 months later.  The commentary discusses the importance of early diagnosis of mesenteric ischemia and how to prevent diagnostic errors that can impede early identification and treatment.

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A 65-year-old female with a documented allergy to latex underwent surgery for right-sided Zenker’s diverticulum. Near the conclusion of surgery, a latex Penrose drain was placed in the neck surgical incision. The patient developed generalized urticaria, bronchospasm requiring high airway pressures to achieve adequate ventilation, and hypotension within 5 minutes of placement of the drain. The drain was removed and replaced with a silicone drain. Epinephrine and vasopressors were administered post-operatively and the patient’s symptoms resolved. The commentary discusses risk factors and consequences of latex allergy in hospital and operating room settings, common latex products that trigger allergic reactions  and hospital safety practices that can limit the risk of latex exposure.

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Kevin J. Keenan, MD, and Daniel K. Nishijima, MD, MAS | July 8, 2022

A 58-year-old man with a past medical history of seizures presented to the emergency department (ED) with acute onset of left gaze deviation, expressive aphasia, and right-sided hemiparesis. The patient was evaluated by the general neurology team in the ED, who suspected an acute ischemic stroke and requested an evaluation by the stroke neurology team but did not activate a stroke alert. The stroke team concluded that the patient had suffered a focal seizure prior to arrival and had postictal deficits. The stroke team did not order emergent CT angiography and perfusion imaging but recommended routine magnetic resonance imaging with angiography (MRI/MRA) for further evaluation, which showed extensive cerebral infarction in the distribution of an occluded left middle cerebral artery (MCA). Due to the delayed diagnosis of left MCA stroke, it was too late to perform any neurovascular intervention. The commentary highlights the importance of timely use of stroke alert protocols, challenges with CT angiography in early acute ischemic stroke, and the importance of communication and collaboration between ED and neurology teams.

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David Barnes, MD and Joseph Yoon, MD | April 27, 2022

An 18-month-old girl presented to the Emergency Department (ED) after being attacked by a dog and sustaining multiple penetrating injuries to her head and neck. After multiple unsuccessful attempts to establish intravenous access, an intraosseous (IO) line was placed in the patient’s proximal left tibia to facilitate administration of fluids, blood products, vasopressors, and antibiotics.  In the operating room, peripheral intravenous (IV) access was eventually obtained after which intraoperative use of the IO line was restricted to a low-rate fluid infusion.  An hour into the operation, the anesthesiologist found her left calf to be warm and tense, presumably due to fluid extravasation from the IO line.  The IO line was removed, and the Orthopedic Surgery service was consulted intraoperatively due to concern for acute compartment syndrome.  Signs of compartment syndrome eventually resolved without any surgical intervention.  The commentary summarizes complications associated with IO lines, the importance of anticipating procedural complications, and methods to identify the signs and symptoms of acute compartment syndrome.

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Katrina Pasao, MD and Pouria Kashkouli, MD, MS | March 31, 2022

This Spotlight Case describes an older man incidentally diagnosed with prostate cancer, with metastases to the bone. He was seen in clinic one month after that discharge, without family present, and scheduled for outpatient biopsy. He showed up to the biopsy without adequate preparation and so it was rescheduled. He did not show up to the following four oncology appointments. Over the course of the following year, the patient’s son and daughter were contacted at various points to re-establish care, but he continued to miss scheduled appointments and treatments. During a hospital admission, a palliative care team determined that the patient did not have capacity to make complex medical decisions. He was discharged to a skilled nursing facility, and then to a board and care when he failed to improve. He missed two more oncology appointments before being admitted with cancer-related pain. Based on the patient’s poor functional status, he was not considered a candidate for additional therapy. After a discussion of goals of care with the patient and daughter, he was enrolled in hospice. The commentary outlines key elements for assessing patient capacity, the importance of understanding the patient’s psychosocial history, and strategies to strengthen psychosocial training for medical and nursing trainees.

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Hannah Spero, MSN, APRN, Angela E. Usher, PhD, LCSW, Brian Howard MS1, and Frederick J. Meyers, MD | November 30, 2021

A 77-year-old man was diagnosed with a rectal mass. After discussing goals of care with an oncologist, he declined surgical intervention and underwent targeted radiotherapy before being lost to follow up. The patient subsequently presented to Emergency Department after a fall at home and was found to have new metastatic lesions in both lungs and numerous enhancing lesions in the brain. Further discussions of the goals of care revealed that the patient desired to focus on comfort and on maintaining independence for as long as possible. The inpatient hospice team discussed the potential role of brain radiotherapy for palliation to meet the goal of maintaining independence. The patient successfully completed a course of central nervous system (CNS) radiation, which resulted in improved strength, energy, speech, and quality of life. This case represents a perceived delay in palliative radiation, an “error” in care. The impact of the delay was lessened by the hospice team who role modeled integration of disease directed therapy with palliative care, a departure from the historic model of separation of hospice from disease treatment. 

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