scholarly journals Metabolic encephalopathy caused by nitrous oxide (‘laughing gas’) induced hyperammonaemia

2019 ◽  
Vol 12 (11) ◽  
pp. e232163
Author(s):  
Marissa Ginette Danielle Vive ◽  
Galia Valentinova Anguelova ◽  
Sjoerd Duim ◽  
Herman Marcel André Hofstee
Keyword(s):  
Emergency Department ◽  
Nitrous Oxide ◽  
Altered Mental Status ◽  
Vitamin B ◽  
Recreational Drug ◽  
Metabolic Encephalopathy ◽  
Laughing Gas ◽  
Catabolic State ◽  
Ammonia Degradation

A 26-year-old man presented at the emergency department with confusion and decreased consciousness after several days of vomiting. In the preceding 6 months, he had used a 2-litre tank of nitrous oxide (N2O) weekly. His metabolic encephalopathy was caused by hyperammonaemia which probably resulted from interference of N2O-induced vitamin B12 deficiency with ammonia degradation. A catabolic state might have contributed to the hyperammonaemia in this case. After treatment with vitamin B12 and lactulose, both his consciousness and hyperammonaemia improved. He reported no residual complaints after 3 months of follow-up. Since N2O is increasingly used as a recreational drug, we recommend considering hyperammonaemia as a cause of metabolic encephalopathy in cases of N2O use and altered mental status.

scholarly journals Neurological complications and pathogenetic therapy for chronic nitrous oxide intoxication (“laughing gas”) in nightclub visitors

2020 ◽  
Vol 10 (3) ◽  
pp. 49-62
Author(s):  
N. А. Suponeva ◽  
D. А. Grishina ◽  
D. А. Grozova ◽  
N. V. Belova ◽  
М. А. Ginzberg ◽  
...  
Keyword(s):  
Nitrous Oxide ◽  
Neurological Complication ◽  
Neurological Complications ◽  
Vitamin B ◽  
Aged People ◽  
Laughing Gas ◽  
Pathogenetic Therapy ◽  
Vitamin Level ◽  
Sensory Polyneuropathy

Background. Nitrous oxide abuse (“laughing gas”, N2O) is common among young people attending nightclubs. Contrary to popular belief about the safety of N2O, in some cases neurological complications develop due to a deficiency of vitamin B12, the activity of which is blocked by N2O. Purpose of the study – to determine the typology and course of neurological disorders in a group of patients who regularly use “laughing gas”. To note the key diagnostic markers that allow verification of vitamin B12 deficiency induced by nitrous oxide consumption. To describe pathogenetic therapy features and follow-up. Materials and methods. The study included 12 patients (10 men and 2 women) aged 18 to 45 years (average age 29 years) with a diagnosis of B12-deficient myelopolyneuropathy induced by regular use of nitrous oxide. Results. The most common neurological complication of nitrous oxide abuse for more than 1 month was a generalized lesion of the peripheral nerves with acute or subacute distal symmetric sensory or sensorimotor axonal polyneuropathy. In the clinical picture, sensory complaints and disorders prevailed. Paresis developed in half of the cases. A typical neuroimaging symptom characteristic of funicular myelosis was rarely detected (16.7 %). A decrease in B12 vitamin level could most reliably be diagnosed only indirectly, by the presence of hyperhomocysteinemia (91.7 % of cases). In all cases that were followed-up, prolonged therapy with cyanocobalamin led to partial (n = 5; 62.5 %) or complete (n = 3; 37.5 %) regression of neurological symptoms. Conclusion. Caution regarding the use of nitrous oxide should be in all cases of predominantly sensory polyneuropathy with acute or subacute development in young and middle-aged people. A thorough history taking (targeted survey on the fact of nitrous oxide consumption) and diagnostics (testing the level of homocysteine, if possible methylmalonic acid) allow you to not miss a deficiency of vitamin B12, the treatment of the consequences of which with timely verification and adequate correction is quite effective. It is recommended that the level of homocysteine in the blood to be regularly monitored during the treatment (in order to achieve its normalization).

scholarly journals Recurrent noncirrhotic hyperammonemia causing acute metabolic encephalopathy in a patient with a continent ileocecal pouch: a case report

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
T. M. Skipina ◽  
S. Macbeth ◽  
E. L. Cummer ◽  
O. L. Wells ◽  
S. Kalathoor
Keyword(s):  
Emergency Department ◽  
Metabolic Acidosis ◽  
Mental Status ◽  
Rare Case ◽  
Liver Function Tests ◽  
Altered Mental Status ◽  
Potassium Citrate ◽  
Metabolic Encephalopathy ◽  
History Of ◽  
Normal Urine

Abstract Introduction Acute encephalopathy, while a common presentation in the emergency department, is typically caused by a variety of metabolic, vascular, infectious, structural, or psychiatric etiologies. Among metabolic causes, hyperammonemia is relatively common and typically occurs in the setting of cirrhosis or liver dysfunction. However, noncirrhotic hyperammonemia is a rare occurrence and poses unique challenges for clinicians. Case presentation Here we report a rare case of a 50-year-old Caucasian female with history of bladder cancer status post chemotherapy, radical cystectomy, and ileocecal diversion who presented to the emergency department with severe altered mental status, combativeness, and a 3-day history of decreased urine output. Her laboratory tests were notable for hyperammonemia up to 289 μmol/L, hypokalemia, and hyperchloremic nonanion gap metabolic acidosis; her liver function tests were normal. Urine cultures were positive for Enterococcus faecium. Computed tomography imaging showed an intact ileoceal urinary diversion with chronic ileolithiasis. Upon administration of appropriate antibiotics, lactulose, and potassium citrate, she experienced rapid resolution of her encephalopathy and a significant reduction in hyperammonemia. Her hyperchloremic metabolic acidosis persisted, but her hypokalemia had resolved. Conclusion This case is an example of one of the unique consequences of urinary diversions. Urothelial tissue is typically impermeable to urinary solutes. However, when bowel segments are used, abnormal absorption of solutes occurs, including exchange of urinary chloride for serum bicarbonate, leading to a persistent hyperchloremic nonanion gap metabolic acidosis. In addition, overproduction of ammonia from urea-producing organisms can lead to abnormal absorption into the blood and subsequent oversaturation of hepatic metabolic capacity with consequent hyperammonemic encephalopathy. Although this is a rare case, prompt identification and treatment of these metabolic abnormalities is critical to prevent severe central nervous system complications such as altered mental status, coma, and even death in patients with urinary diversions.

scholarly journals Experience of a Neuro-Emergency Expert in the Emergency Department during One Year of the COVID-19 Pandemic

2021 ◽  
Vol 18 (18) ◽  
pp. 9461
Author(s):  
Yong-Won Jung ◽  
Sang-Ook Ha ◽  
Jin-Hyouk Kim ◽  
Won-Seok Yang ◽  
Young-Sun Park
Keyword(s):  
Emergency Department ◽  
Clinical Characteristics ◽  
Neurological Diseases ◽  
Altered Mental Status ◽  
Motor Weakness ◽  
The Mean ◽  
One Year ◽  
Ct And Mri ◽  
Paroxysmal Positional Vertigo

We aimed to evaluate the overall clinical characteristics of patients treated by a neuro-emergency expert dedicated to the emergency department (ED) as an attending neurologist during the COVID-19 pandemic. We included adult patients who visited the ED between 1 January and 31 December 2020 and were treated by a neuro-emergency expert. We retrospectively obtained and analyzed the data on patients’ clinical characteristics and outcome. The neuro-emergency expert treated 1155 patients (mean age, 62.9 years). The proportion of aged 18–40 years was the lowest, and the most common modes of arrival were public ambulance (50.6%) and walk-in (42.3%). CT and MRI examinations were performed in 94.4 and 33.1% of cases, respectively. The most frequent complaints were dizziness (31.8%), motor weakness (24.2%), and altered mental status (15.8%). The ED diagnoses were acute ischemic stroke (19.8%), benign paroxysmal positional vertigo (14.2%), vestibular neuritis (9.9%), and seizure (8.8%). The mean length of stay in the ED was 207 min. Of the patients, 55.0% were admitted to the hospital, and 41.8% were discharged for outpatient follow-up. Despite the longer stay and the complexity and difficulty of neurological diseases during the COVID-19 pandemic, the accurate diagnosis and treatment provided by a neuro-emergency expert can be presented as a good model in the ED.

The dangers of recreational inhalation of nitrous oxide

2021 ◽  
pp. 1-8
Author(s):  
Joshua Wong ◽  
Thevarajah Viyasar ◽  
Benjamin Layton ◽  
Joshua Lauder
Keyword(s):  
Nitrous Oxide ◽  
Psychosocial Interventions ◽  
Complete Recovery ◽  
Clinical Findings ◽  
Vitamin B ◽  
Alveolar Pressure ◽  
Subacute Combined Degeneration ◽  
System A ◽  
Laughing Gas ◽  
The Uk

Nitrous oxide, also known as ‘laughing gas’, is one of the most widely used recreational drugs among teenagers in the UK. Copious inhalation of nitrous oxide may increase intra-alveolar pressure, resulting in barotrauma secondary to alveolar rupture. Pneumomediastinum and subcutaneous emphysema are common clinical findings in nitrous oxide-associated barotrauma. Prolonged nitrous oxide misuse may inactivate vitamin B12 through the alteration of its metabolism, causing demyelination of the central and peripheral nervous system. A spectrum of neurological manifestations has been reported, including peripheral neuropathy, myelopathy and subacute combined degeneration of the spinal cord. Medical therapies and psychosocial interventions aiming at nitrous oxide cessation are important treatment steps to achieve partial or complete recovery from the adverse effects associated with inhalation of nitrous oxide.

Emergency Department Admission and Mortality Rate for Suicidal Behavior

Crisis ◽  
2014 ◽  
Vol 35 (6) ◽  
pp. 406-414 ◽  
Author(s):  
Raimondo Maria Pavarin ◽  
Angelo Fioritti ◽  
Francesca Fontana ◽  
Silvia Marani ◽  
Alessandra Paparelli ◽  
...  
Keyword(s):  
Emergency Department ◽  
Metropolitan Area ◽  
Suicidal Behavior ◽  
Mortality Risk ◽  
Illicit Drugs ◽  
Attempted Suicide ◽  
Cox Model ◽  
Emergency Department Admission ◽  
Completed Suicide

Background: The international literature reports that for every completed suicide there are between 8 and 22 visits to an Emergency Department (ED) for attempted suicide/suicidal behavior. Aims: To describe the characteristics of admission to emergency departments (EDs) for suicide-related presenting complaints in the metropolitan area of Bologna; to estimate the risk for all-cause mortality and for suicide; to identify the profiles of subjects most at risk. Method: Follow-up of patients admitted to the EDs of the metropolitan area of Bologna between January 2004 and December 2010 for attempted suicide. A Cox model was used to evaluate the association between sociodemographic variables and the general mortality risk. Results: We identified 505 cases of attempted suicide, which were more frequent for female subjects, over the weekend, and at night (8:00 p.m./8:00 a.m.). The most used suicide methods were psychotropic drugs, sharp or blunt objects, and jumping from high places. In this cohort, 3.6% of subjects completed suicide (4.5% of males vs. 2.9% of females), 2.3% within 1 year of the start of follow-up. The most common causes of death were drug use and hanging. In the multivariate analysis, those who used illicit drugs 24 hr prior to admission to the ED (hazard ratio [HR] = 3.46, 95% CI = 1.23–9.73) and patients who refused the treatment (HR = 6.74, 95% CI = 1.86–24.40) showed an increased mortality risk for suicide. Conclusion: Deliberate self-harm patients presenting to the ED who refuse treatment represent a specific target group for setting up dedicated prevention schemes.

An Agent-based Approach to ARGESIM Benchmark C6 ‘Emergency Department – Follow-up Treatment’ using Anylogic

2013 ◽  
Vol 23 (3-4) ◽  
Author(s):  
Kathatina Oelsboeck ◽  
Michael Noya ◽  
Patrick Einzinger
Keyword(s):  
Emergency Department ◽  
Agent Based

scholarly journals 986. Improvement in Administration of HIV Post-Exposure Prophylaxis in the Emergency Department Following Sexual Assault

2020 ◽  
Vol 7 (Supplement_1) ◽  
pp. S521-S522
Author(s):  
Jennifer R Silva-Nash ◽  
Stacie Bordelon ◽  
Ryan K Dare ◽  
Sherrie Searcy
Keyword(s):  
Emergency Department ◽  
Sexual Assault ◽  
Hiv Transmission ◽  
Post Exposure Prophylaxis ◽  
Intervention Period ◽  
Post Intervention ◽  
Post Exposure ◽  
Assault Victims ◽  
Exposure Prophylaxis

Abstract Background Nonoccupational post exposure prophylaxis (nPEP) following sexual assault can prevent HIV transmission. A standardized Emergency Department (ED) protocol for evaluation, treatment, and follow up for post assault victims was implemented to improve compliance with CDC nPEP guidelines. Methods A single-center observational study of post sexual assault patients before/after implementation of an ED nPEP protocol was conducted by comparing the appropriateness of prescriptions, labs, and necessary follow up. A standardized order-set based on CDC nPEP guidelines, with involvement of an HIV pharmacist and ID clinic, was implemented during the 2018-2019 academic year. Clinical data from pre-intervention period (07/2016-06/2017) was compared to post-intervention period (07/2018-08/2019) following a 1-year washout period. Results During the study, 147 post-sexual assault patients (59 Pre, 88 Post) were included. One hundred thirty-three (90.4%) were female, 68 (46.6%) were African American and 133 (90.4%) were candidates for nPEP. Median time to presentation following assault was 12.6 hours. nPEP was offered to 40 (67.8%) and 84 (95.5%) patients (P< 0.001) and ultimately prescribed to 29 (49.2%) and 71 (80.7%) patients (P< 0.001) in pre and post periods respectively. Renal function (37.3% vs 88.6%; P< 0.001), pregnancy (39.0% vs 79.6%; P< 0.001), syphilis (3.4% vs 89.8%; P< 0.001), hepatitis B (15.3% vs 95.5%; P< 0.001) and hepatitis C (27.1% vs 94.3%) screening occurred more frequently during the post period. Labratory, nPEP Prescription and Follow up Details for Patients Prescribed nPEP Conclusion The standardization of an nPEP ED protocol for sexual assault victims resulted in increased nPEP administration, appropriateness of prescription, screening for other sexually transmitted infectious and scheduling follow up care. While guideline compliance dramatically improved, further interventions are likely warranted in this vulnerable population. Disclosures Ryan K. Dare, MD, MS, Accelerate Diagnostics, Inc (Research Grant or Support)

81 Integrating A Front Door Frailty Service in the Emergency Department: Results of A Pilot Study

2021 ◽  
Vol 50 (Supplement_1) ◽  
pp. i12-i42
Author(s):  
L Dunnell ◽  
A Shrestha ◽  
E Li ◽  
Z Khan ◽  
N Hashemi
Keyword(s):  
Emergency Department ◽  
Hospital Admissions ◽  
Admission Rate ◽  
Community Services ◽  
Service Improvement ◽  
Specialist Nurse ◽  
Front Door ◽  
Medication Changes ◽  
Health Service Improvement

Abstract Introduction Increasing old age and frailty is putting pressure on health services with 5–10% of patients attending the emergency department (ED) and 30% of patients in acute medical units classified as older and frail. National Health Service improvement mandates that by 2020 hospital trusts with type one EDs provide at least 70 hours of acute frailty service each week. Methodology A two-week pilot (Monday–Friday 8 am-5 pm) was undertaken, with a “Front Door Frailty Team” comprising a consultant, junior doctor, specialist nurse and pharmacist, with therapy input from the existing ED team. They were based in the ED seeing patients on arrival, referrals from the ED team and patients in the ED observation ward—opposed to the usual pathway of referral from the ED team to medical team. Data was captured using “Cerner” electronic healthcare records. A plan, do, study, act methodology was used throughout with daily debrief and huddle sessions. Results 95 patients were seen over two weeks. In the over 65 s, average time to be seen was 50 minutes quicker than the ED team over the same period, with reduced admission rate (25.7% vs 46.5%). The wait between decision to admit and departure was shortened by 119 minutes. Overall, this led to patients spending on average 133 minutes less in the ED. 64 patients were discharged, of which 44 had community follow-up (including 37.5% of 64 referred to acute elderly clinic and 25% to rapid response). 47 medications were stopped across 25 patients. Conclusion The pilot shows that introduction of an early comprehensive geriatric assessment in the ED can lead to patients being seen sooner, with more timely decisions over their care and reduction in hospital admissions. It allowed for greater provision of acute clinics and community services as well as prompt medication review and real time medication changes.

Hand Infections: An Audit of 160 Infections Treated in an Accident and Emergency Department

1993 ◽  
Vol 18 (1) ◽  
pp. 115-118 ◽  
Author(s):  
J. STEVENSON ◽  
I. W. R. ANDERSON
Keyword(s):  
Emergency Department ◽  
Complete Resolution ◽  
Wound Care ◽  
Duration Of Treatment ◽  
Mean Delay ◽  
Accident And Emergency ◽  
Accident And Emergency Department ◽  
The Mean ◽  
Careful Assessment

160 consecutive hand infections presented to an Accident and Emergency department over a four-month period. All but one were treated solely on an out-patient basis. The mean delay to presentation was three days, the mean duration of treatment was six days. Follow-up to complete resolution was achieved in 89% of cases. No patients were treated with parenteral antibiotics. The need for careful assessment, early aggressive surgery, and meticulous attention to the principles of wound care by experienced clinicians is emphasized.

scholarly journals 688 Rapid Implementation of Virtual Fracture Clinic During COVID 19 Reduces Both Face-To-Face Appointments and Facilitates Rapid Feedback and Education to Be Delivered to The Emergency Department

2021 ◽  
Vol 108 (Supplement_2) ◽  
Author(s):  
T Havenhand ◽  
L Hoggett ◽  
A Bhutta
Keyword(s):  
Emergency Department ◽  
Patient Flow ◽  
Prospective Data ◽  
Fracture Clinic ◽  
Face To Face ◽  
Return Rates ◽  
Acute Hospitals ◽  
Virtual Fracture Clinic ◽  
Improve Patient

Abstract Introduction COVID-19 has dictated a shift towards virtual clinics. Pennine Acute Hospitals NHS Trust serves over a million patients with a significant number of face-to-face fracture clinics. Introduction of a Virtual Fracture Clinic (VFC) reduces hospital return rates and improves patient experience. The referral data can be used to give immediate monthly feedback to the referring department to further improving patient flow. Method Prospective data was collected for all referrals to VFC during March 2020. Data included referral diagnosis, actual diagnosis, referrers grade, and final outcome. Results 630 referrals were made to VFC. 347 (55%) of those referrals were directly discharged without the need for physical consultation. Of these 114 (32%) were injuries which can be discharged by the Emergency Department with an advice leaflet using existing pathways. Of the remaining discharges 102 (29%) were query fractures or sprains; and 135 (39%) were minor fractures; which needed only advice via a letter and no face to face follow up. Conclusions Implementation of VFC leads to a decrease in physical appointments by 55% saving 347 face to face appointments. The new system has also facilitated effective audit of referrals in order to further improve patient flow from the Emergency Department via feedback mechanisms and education.

Sign in / Sign up

Export Citation Format

Share Document