What Is That? Innumerable Mysterious Densities Identified on Abdominal Imaging.

Radiopaque densities can be observed on imaging after the ingestion of either foreign bodies or some medications. Our case report discusses an 11-year-old boy with autism spectrum disorder and attention deficient disorder who presented to the emergency department because of concerns for constipation and dehydration. Incidentally, an abdominal x-ray showed numerous radiopaque densities throughout his intestines in addition to his constipation. He was admitted, and his home regimen was reviewed to attempt to identify a potential source for these radiopaque densities. This case presented an interesting teaching opportunity in the identification of the radiopaque densities and review of pharmacokinetics.

Renal replacement therapy in the management of intoxications in children: recommendations from the Pediatric Continuous Renal Replacement Therapy (PCRRT) workgroup.

BACKGROUND: Intentional or unintentional ingestions among children and adolescents are common. There are a number of ingestions amenable to renal replacement therapy (RRT). METHODS: We systematically searched PubMed/Medline, Embase, and Cochrane databases for literature regarding drugs/intoxicants and treatment with RRT in pediatric populations. Two experts from the PCRRT (Pediatric Continuous Renal Replacement Therapy) workgroup assessed titles, abstracts, and full-text articles for extraction of data. The data from the literature search was shared with the PCRRT workgroup and two expert toxicologists, and expert panel recommendations were developed. RESULTS AND CONCLUSIONS: We have presented the recommendations concerning the use of RRTs for treatment of intoxications with toxic alcohols, lithium, vancomycin, theophylline, barbiturates, metformin, carbamazepine, methotrexate, phenytoin, acetaminophen, salicylates, valproic acid, and aminoglycosides.

Comparative Analysis of Ampicillin Plasma and Dried Blood Spot Pharmacokinetics in Neonates.

BACKGROUND: Dried blood spot (DBS) is a practical sampling strategy for pharmacokinetic studies in neonates. The utility of DBS to determine the population pharmacokinetics (pop-PK) of ampicillin, as well as accuracy versus plasma samples, was evaluated. METHODS: An open-label, multicenter, opportunistic, prospective study was conducted in neonates. Ampicillin concentrations from plasma and DBS (CONCPlasma and CONCDBS) were measured by liquid chromatographic tandem mass spectrometry and analyzed using pop-PK and statistical (including transformation) approaches. RESULTS: A total of 29 paired plasma and DBS samples from 18 neonates were analyzed. The median (range) gestational age and postnatal age were 37 (27-41) weeks and 8 (1-26) days, respectively. The geometric mean of CONCDBS to CONCPlasma ratio was 0.56. Correlation analysis demonstrated strong association between CONCPlasma and CONCDBS (r = 0.902, analysis of variance P < 0.001). Using linear regression transformation, the estimated CONCPlasma (eCONCPlasma) was derived using (CONCDBS - 3.223)/0.51. The median bias and geometric mean ratio improved to -11% and 0.88 (Wilcoxon signed-rank test, P < 0.001), respectively, when comparing eCONCPlasma to CONCPlasma. Furthermore, using pop-PK modeling, the median bias (interquartile range) for clearance and individual predicted concentrations improved to 8% (-11 to 50) and -8% (-34 to 11), respectively, when eCONCPlasma was used. CONCLUSIONS: After transformation, DBS sampling accurately predicted ampicillin exposure in neonates.

Nausea, Vomiting, and Weight Loss in a Young Adult Patient With a History of a Gunshot Wound.

Assessing victims of gunshot wounds with retained bullets/bullet fragments for lead toxicity is not always considered until the patient develops signs and symptoms of toxicity. We discuss the case of a 19-year-old young man who received a diagnosis of chronic lead toxicity (serum lead concentration 51 µg/dL) 5 weeks after a hunting accident. Extensive wound debridement occurred following the accident; however, lead toxicity was not diagnosed until after his fourth emergency department visit. Oral chelation therapy was required for the management of his lead toxicity.

Longitudinal assessment of bone growth and development in a facility-based population of young adults with cerebral palsy.

AIM: Osteoporosis is a significant clinical problem in persons with moderate to severe cerebral palsy (CP), causing fractures with minimal trauma. Over the past decade, most studies examining osteoporosis and CP have been cross-sectional in nature, focused exclusively on children and adolescents and only involving one evaluation of bone mineral density (BMD). The purpose of this study was to assess BMD in a group including adults with CP, and changes in each individual's BMD over a 5- to 6-year period. METHOD: The study group included 40 residents of a long-term care facility aged 6 to 26 years at the time of their initial evaluation. Twenty-one patients (52.5%) were male, 35 (88%) were white, and 38 (95%) were in Gross Motor Function Classification System level V. BMD was assessed by dual-energy X-ray absorptiometry on the right and left distal femurs for three distinct regions of interest. RESULTS: Five residents had a fracture that occurred during the study period; this represented a fracture rate of 2.1% per year in the study group. Longitudinally, annualized change in the median BMD was 0.7% to 1.0% per year in the different regions of the distal femur, but ranged widely among the study group, with both increases and decreases in BMD. Increase in BMD over time was negatively correlated with age and positively correlated with change in weight. INTERPRETATION: Changes in BMD over time in profoundly involved persons with CP can range widely, which is important to recognize when evaluating potential interventions to improve BMD. Age and changes in body weight appear the most relevant factors.

Improving Accuracy of Medication Reconciliation for Hospitalized Children: A Quality Project.

BACKGROUND AND OBJECTIVES: Medication reconciliation is a complex, but necessary, process to prevent patient harm from medication discrepancies. Locally, the steps of medication reconciliation are completed consistently; however, medication errors still occur, which suggest process inaccuracies. We focused on removal of unnecessary medications as a proxy for accuracy. The primary aim was to increase the percentage of patients admitted to the pediatric hospital medicine service with at least 1 medication removed from the home medication list by 10% during the hospital stay by June of 2022. METHODS: Using the Model for Improvement, a multidisciplinary team was formed at a children's hospital, a survey was completed, and multiple Plan-Do-Study-Act cycles were done focusing on: 1. simplifying electronic health record processes by making it easier to remove medications; 2. continuous resident education about the electronic health record processes to improve efficiency and address knowledge gaps; and 3. auditing charts and real-time feedback. Data were monitored with statistical process control charts. RESULTS: The project exceeded the goal, improving from 35% to 48% of patients having at least 1 medication removed from their home medication list. Improvement has sustained for 12 months. CONCLUSIONS: The combination of interventions including simplifying workflow, improving education, and enhancing accountability resulted in more patients with medications removed from their home medication list.

Direct care staff and parents'/legal guardians' perspectives on end-of-life care in a long-term care facility for medically fragile and intellectually disabled pediatric and young adult residents.

OBJECTIVE: Children and young adults with severe disabilities and their families are faced with enormous challenges throughout the lifespan, including admitting the child to a long-term care facility (LTCF) and making end-of-life (EOL) care decisions. While children are residents of these specialized LTCF, the majority of their daily care, even up until death, is provided by nursing aides or habilitation aides (HAs) with limited training and educational backgrounds compared with other licensed healthcare providers. The purpose of this study was to determine the impact of a resident's EOL experience on the primary HAs and parents/guardians. METHOD: Thirty-five resident deaths occurred at Hattie Larlham Center for Children with Disabilities (HLCCD) between January 1, 2006 and February 28, 2009. The HAs and parents/legal guardians were identified for each death and invited to complete three surveys per resident (FAMCARE, Impact of Events Scale (IES)-revised, and Perspective on End-of-Life Care) to assess their experience. There were 112 surveys mailed to 62 HAs and 47 surveys mailed to 47 parents. RESULTS: Forty-two surveys were returned from 18/62 HAs (response rate 29%) and 11/47 parents/legal guardians completed the surveys (response rate 23%). The FAMCARE survey found that parents were more satisfied with the EOL care than were the HAs. The IES-revised found no difference in traumatic responses from either group. Comments from the Perspective on End-of-Life Care survey were analyzed qualitatively for common themes including pain control, respect, decision making, environmental needs, resources, and support. SIGNIFICANCE OF RESULTS: Because of a low response rate, it was difficult to draw significant conclusions; however, several interesting trends were noted regarding the number of deaths HAs experienced, satisfaction with care, and distress. The special needs of this population and their caregivers can provide crucial insights into interventions (e.g. chaplaincy support, debriefings, anticipatory counseling, environmental changes) that might be of benefit for any caregiver or parent of a child with a long-term, chronic condition, particularly involving developmental disability.

Emergence of linezolid-resistant Staphylococcus aureus after prolonged treatment of cystic fibrosis patients in Cleveland, Ohio.

Linezolid (LZD)-resistant Staphylococcus aureus (LRSA) isolates were monitored from 2000 to 2009 in Cleveland, OH. LRSA first emerged in 2004 only in cystic fibrosis (CF) patients, with 11 LRSA-infected CF patients being identified by 2009. LRSA was isolated from 8 of 77 CF patients with S. aureus respiratory tract infection treated with LZD from 2000 to 2006. Analysis of clinical data showed that the 8 CF patients with LRSA received more LZD courses (18.8 versus 5.9; P = 0.001) for a longer duration (546.5 versus 211.9 days; P < 0.001) and had extended periods of exposure to LZD (83.1 versus 30.1 days/year; P < 0.001) than the 69 with LZD-susceptible isolates. Five LRSA isolates included in the clinical analysis (2000 to 2006) and three collected in 2009 were available for molecular studies. Genotyping by repetitive extrapalindromic PCR and pulsed-field gel electrophoresis revealed that seven of these eight LRSA strains from unique patients were genetically similar. By multilocus sequence typing, all LRSA isolates were included in clonal complex 5 (seven of sequence type 5 [ST5] and one of ST1788, a new single-locus variant of ST5). However, seven different variants were identified by spa typing. According to the Escherichia coli numbering system, seven LRSA isolates contained a G2576T mutation (G2603T, S. aureus numbering) in one to four of the five copies of domain V of the 23S rRNA genes. One strain also contained a mutation (C2461T, E. coli numbering) not previously reported. Two strains, including one without domain V mutations, possessed single amino acid substitutions (Gly152Asp or Gly139Arg) in the ribosomal protein L3 of the peptidyltransferase center, substitutions not previously reported in clinical isolates. Emergence of LRSA is a serious concern for CF patients who undergo prolonged courses of LZD therapy.

Acute Tramadol Ingestion With Transient Acute Kidney Injury in an Adolescent Female.

Renal toxicity has been described with tramadol overdoses; however, it is typically associated with rhabdomyolysis, multiorgan failure and/or mortality. Our patient was a 16-year-old female who was evaluated following an intentional tramadol ingestion, estimated 27.8 to 37 mg/kg, and had a seizure prior to arriving at our health care facility. Her symptoms were consistent with a tramadol ingestion; however, she developed transient acute renal impairment (peak serum creatinine, 4.04 mg/dL), which improved over 6 days with minimal intervention. No other causes were identified to explain her acute renal impairment thus it was attributed to the tramadol overdose. Providers should be aware that transient acute renal impairment could occur with an intentional tramadol ingestion and may not require aggressive intervention.

Fomepizole: a critical assessment of current dosing recommendations.

Fomepizole, 4-methylpyrazole (4-MP), is a competitive antagonist of alcohol dehydrogenase with a binding affinity >8000 times that of ethanol. The drug is currently labeled by the United States Food and Drug Administration for the treatment of adult patients with known or suspected ethylene glycol or methanol poisoning. Fomepizole's wide therapeutic dose range and safety profile confer several advantages over standard ethanol therapy for the treatment of toxic alcohol exposures, including the lack of ethanol-associated side effects. Published data and data obtained from the drug's manufacturer implies that the dose escalation after 48 hours is to compensate for fomepizole-induced increased body clearance resulting from autoinduction of the cytochrome P450 (CYP) drug metabolizing enzyme CYP2E1. However, we were unable to identify any evidence of fomepizole's metabolism occurring via CYP2E1 in humans while the data most frequently cited as evidence for induction do not appear to support this claim. Based on this data along with the apparent zero-order kinetics, the current dose increase recommendations may be unnecessary and considering the safety margin described for fomepizole, an extremely conservative constant higher dose administered every 12 hours would appear to assure efficacy and tolerability. Despite the evidence, dose changes should only be implemented after careful clinical trials.

Valproic Acid and topiramate induced hyperammonemic encephalopathy in a patient with normal serum carnitine.

A 17-year-old female developed hyperammonemic encephalopathy 2 weeks after valproic acid (VPA), 500 mg twice a day, was added to her regimen of topiramate (TPM), 200 mg twice a day. She presented to the emergency department (ED) with altered mental status, hypotension, bradycardia, and lethargy. Laboratory analysis showed mild non-anion gap hyperchloremic acidosis, serum VPA concentration of 86 mg/L, and urine drug screen result that was positive for marijuana. She was admitted to the pediatric intensive care unit for persistent symptoms, prolonged QTc, and medical history. Blood ammonia concentrations were obtained because of her persistent altered mental status, initially 94 µmol/L and a peak of 252 µmol/L. A serum carnitine profile was obtained at the time of hyperammonemia and was found to be normal (results were available postdischarge). VPA and TPM were discontinued on day 1 and day 2, respectively, as the patient's blood ammonia concentration remained elevated. On day 3, her mental status had returned to baseline, and blood ammonia concentrations trended downward; by day 4 her blood ammonia concentration was 23 µmol/L. VPA has been associated with numerous side effects including hyperammonemia and encephalopathy. Recently, drug interactions with TPM and VPA have been reported; however, serum carnitine concentrations have not been available. We discuss the possible mechanisms that VPA and TPM may affect serum ammonia and carnitine concentrations and the use of levocarnitine for patients or treating toxicity.

A burn center paradigm to fulfill deferred consent public disclosure and community consultation requirements for emergency care research.

INTRODUCTION: To fulfill Food and Drug Administration and Department of Health and Human Services emergency care research informed consent requirements, our burn center planned and executed a deferred consent strategy gaining Institutional Review Board (IRB) approval to proceed with the clinical study. These federal regulations dictate public disclosure and community consultation unique to acute care research. OBJECTIVE: Our regional burn center developed and implemented a deferred consent public notification and community consultation paradigm appropriate for a burn study. METHODS: Published accounts of deferred consent strategies focus on acute care resuscitation practices. We adapted those strategies to design and conduct a comprehensive public notification/community consultation plan to satisfy deferred consent requirements for burn center research. RESULTS: To implement a robust media campaign we engaged the hospital's public relations department, distributed media materials, recruited hospital staff for speaking engagements, enlisted community volunteers, and developed initiatives to inform "hard-to-reach" populations. The hospital's IRB determined we fulfilled our obligation to notify the defined community. CONCLUSION: Our communication strategy should provide a paradigm other burn centers may appropriate and adapt when planning and executing a deferred consent initiative.

Assessment of the clinical use of intravenous and oral N-acetylcysteine in the treatment of acute acetaminophen poisoning in children: a retrospective review.

BACKGROUND: N-acetylcysteine (NAC) is the most effective therapy for acetaminophen (APAP) toxicity and is currently available for oral and intravenous (IV) administration. Although both routes are effective, use of the IV formulation has been increasing since becoming available in the United States in 2004, raising questions about cost/benefit comparisons between the 2 formulations. Decreased length of treatment and hospital stay have been used to justify the use of IV NAC; however, some patients may receive extended therapy of either NAC regimen. OBJECTIVE: This retrospective review assessed the clinical use of oral and IV NAC in pediatric patients with APAP intoxication from June 1, 2004 through May 31, 2008. METHODS: Electronic medical charts for patients aged ≤21 years were identified with International Classification of Diseases, Ninth Revision (ICD-9) codes for APAP overdose. Descriptive statistics were used to describe the overall patient population and route of NAC administration. The primary outcome variable was the length of treatment with IV and oral NAC therapy. RESULTS: A total of 62 charts for patients with APAP toxicity were reviewed; 37 patients (60%) received IV NAC and 25 patients (40%) received oral NAC. The average lengths of treatment and stay for IV dosing were 23.5 hours (range, 17.6-54.9 hours) and 1.6 days (range, 1-3 days), respectively; those for oral dosing were 69.5 hours (range, 33-133 hours) and 1.95 days (range, 1-5 days), respectively. Of 16 patients who received oral NAC and were admitted for <3 days, 14 were transferred to an inpatient psychiatric unit and completed the 72-hour therapy. A total of 3 patients received extended NAC dosing-2 with IV dosing and 1 with oral dosing. CONCLUSIONS: Based on our review, the majority of patients received recommended dosing of NAC therapy; however, 3 patients received extended NAC therapy. Patient-specific factors should be considered when assessing whether NAC therapy should be extended and if one route of administration may be preferred. ClinicalTrials.gov identifier: NCT00725179.

Assessment of serum creatine kinase among adolescent patients following jimsonweed (Datura stramonium) and moonflower (Datura inoxia) ingestions: a review of 11 cases.

INTRODUCTION: Datura stramonium (DS) (jimsonweed) is well known for its abuse potential for hallucinogenic effects and Datura inoxia (DI) (moonflower) has been abused for similar effects. To our knowledge, only one case report describes rhabdomyolysis in association with DS or DI ingestion. CASE IDENTIFICATION AND DETAILS: Patient hospital charts were retrospectively screened from January 1, 2002 to December 31, 2007 to identify patients with qualifying ICD-9 codes for toxic plant ingestions. We report on 11 patient cases of DS/DI ingestions in which serum creatine kinase (CK) concentrations were monitored. These admissions occurred at our hospital over a 6-year period. Serum CK concentrations ranged from 72 to 70,230 U/L. Only three patients had serum CK concentrations greater than 1,000 U/L. One patient with a peak concentration of 70,230 U/L and a positive myoglobinuria was diagnosed with rhabdomyolysis. DISCUSSION: Based on our review of the literature and these cases, it is possible that serum CK concentrations may be elevated more frequently than previously realized. The clinical significance of this abnormal laboratory value is uncertain with the majority of patients remaining asymptomatic without any clinical evidence of rhabdomyolysis.