Diagnostic yield of neuroimaging in syncope patients without high-risk symptoms indicating neurological syncope.

OBJECTIVES: Diagnostic tests are widely used for patients with syncope in the emergency department (ED). This study aimed to determine the diagnostic yield of neuroimaging in patients with syncope without high-risk symptoms. METHODS: Adult patients who presented to the ED with syncope in 2016 were screened retrospectively. Patients who suffered from mild head trauma due to syncope were also included. Patients with neurological examination findings (confusion, amnesia, focal neurological deficit, severe headache, dizziness, nausea and vomiting), patients on anticoagulants, patients with known intracranial malignancies and those whose loss of consciousness was attributed to reasons other than syncope were excluded from the study. RESULTS: A total of 1114 patients were included in the study. The median age was 48 years (IQR = 34-66 years) and 576 (51.7%) of the patients were male. The neuroimaging tests performed were cranial computerized tomography (CT) in 694 (62.3%) cases and magnetic resonance imaging (MRI) in 114 (10.2%) cases. Mild head trauma due to syncope was observed in 116 (10.4%) patients. None of the neuroimaging studies revealed any clinically significant findings. CONCLUSION: Neuroimaging is not beneficial in patients whose medical history and physical examination do not indicate neurogenic syncope, even if the patient has mild head trauma.

Are emergency physicians competent to interpret the cranial CT of patients younger than the age of 2 years with mild head trauma?

OBJECTIVE: The aim of this study is to detect the accuracy rate of emergency physicians' (EPs') interpretations of cranial computed tomography (CT) of a special patient group, the patients younger than the age of 2 years with mild head trauma. METHODS: The study took place in a research and training hospital within a period of 3 months and included a total of 156 patients. The scans were interpreted by the EPs, and the predicted results were recorded in the patients' files; simultaneous interpretations of the on-call radiologist were also recorded. The interpretations were scanned retrospectively at the end of each month, compared, and recorded. RESULTS: With reference to the radiologists' reports, the sensitivity and the specificity of EPs' interpretations of cranial CT were 76.9% and 95.1%, respectively. Concordance of both groups' interpretations was 93.6%. The area under the curve (AUC) value in receiver operating characteristic (ROC) analysis, which reflects these results, was calculated as 0.860 (95% confidence interval, 0.740-0.981). This value was found to be statistically significant (P < .001). False-negative and false-positive values were 23% and 4.9%, respectively. No negative clinical outcomes were observed due to nonconcordance interpreted cases (6.4%). CONCLUSIONS: Emergency physicians can interpret safely the cranial CTs of patients younger than the age of 2 years with mild head trauma, until the radiologists' reports are obtained. However, the anatomic diversities of these patients' age group should be taken into consideration.

The Relation of End-Tidal CO 2 Values With Infarct Volume and Early Prognosis in Patients With Acute Ischemic Stroke.

BACKGROUND: The aim of this study is to reveal the relationship between end-tidal CO 2 (EtCO 2 ) values with infarct volume and early prognosis in patients diagnosed with acute ischemic stroke in the emergency department. MATERIALS AND METHODS: This prospective cross-sectional study was conducted in a tertiary hospital. The demographics, characteristics, EtCO 2 , volume of the stroke area on diffusion-weighted magnetic resonance imaging and the modified Rankin Scale (mRS) of the patients were recorded. The values calculated at admission and at discharge were labeled as "mRS-1" and "mRS-2," respectively, and the mRS-2 measurement was used as a prognostic indicator. The "good" and the "poor" functional outcomes were defined as mRS ≤2 and mRS >2, respectively. Correlations between levels of EtCO 2 and infarct volume, mRS were calculated. RESULTS: In total, 44 patients were included in the study. The median age of the patients was 69 years (interquartile range; 16; min-max: 35 to 88 y) and 68.2% of them were male. In the univariate logistic regression models of the mRS-2 [0 to 2 (0) and 3 to 6 (1)], all variables were not statistically significant to predict mRS-2 group. There were statistically significant differences in EtCO 2 values between mRS-1 ( P =0.03) and mRS-2 ( P =0.04). A negative moderate correlation was found between EtCO 2 and mRS-2 ( r =-0.410; P =0.006). The correlation between EtCO 2 and infarct volume was not statistically significant ( r =-0.256; P =0.093). CONCLUSIONS: This study highlights the importance of capnography follow-up of patients with acute ischemic stroke. In patients with acute ischemic stroke, the EtCO 2 value measured at the time of admission is lower in the group with high mRS at both admission and discharge.

Comparison of Ultrasound-Guided Central Venous Catheter Placement Techniques Using an Easily Made Simulator Model.

OBJECTIVES: Central venous catheter (CVC) placement is an important procedure which is frequently performed in the emergency department (ED) and can cause serious complications. The aim of this study is to introduce a simulation-based tissue model for ultrasound (US)-guided central venous access practices and to compare the effectiveness of static and dynamic US techniques through this model. METHODS: This was a prospective study on US-guided CVC placement techniques simulated with a chicken tissue model. This model is based on the principle of placing two cylindrical balloons filled with colored water (red for arterial and blue for venous) between a raw chicken breast and wrapping the formed structure with plastic wrap. The study was conducted in an academic tertiary care hospital with Emergency Medicine (EM) residents who have received basic US training, including vascular access procedures. All participants performed simulated CVC placement procedures with both static and dynamic US techniques. At the end of the study, the practitioners were asked to rate usefulness of these techniques between one and ten (one was the lowest and ten was the highest score). RESULTS: A total of 32 EM residents were included in the study. Their median age was 29 (IQR = 27 - 31) years and 72% of them were male. Their median duration in ED was 19 (IQR = 12 - 34) months. According to the results of simulated CVC placement procedures, there was no significant difference between the static and dynamic US techniques in terms of puncture numbers, procedure durations, and success rates. However, according to the usefulness scores given by the practitioners, the dynamic US technique was found to be more useful (P < .001). CONCLUSIONS: The chicken tissue model is a convenient tool for simulating US-guided CVC placement procedures. The dynamic US technique is considered to be more useful in this field than the static technique, but the results of practitioner-dependent practices may not always support this generalization.

Nasal Capnography Monitoring of a Patient with Diabetic Ketoacidosis.

BACKGROUND: End-tidal carbon dioxide (EtCO2) is a non-invasive method giving information about the perfusion, ventilation, and metabolic condition of patients. The correlation was studied here between the metabolic (pH, bicarbonate) values and EtCO2 during the treatment of diabetic ketoacidosis (DKA). CASE REPORT: A 23-year-old male patient with diabetes mellitus was admitted to the emergency department (ED) with the complaints of nausea, vomiting, and fever. The patient with a diagnosis of DKA was continuously monitored with EtCO2; EtCO2 was correlated with serum bicarbonate (HCO3; r = 0.96; P < .001) and pH (r = 0.93; P < .001). CONCLUSION: Continuous EtCO2 monitoring should be considered by emergency physicians in the metabolic monitoring of the patients as it is an easy-to-use, non-invasive, and cost-effective method that provides instant and reliable information.

The Incidence of Central Neurological Disorders Among Patients With Isolated Dizziness and the Diagnostic Yield of Neuroimaging Studies.

OBJECTIVES: Dizziness is a common symptom among emergency department (ED) patients and is often associated with benign processes. The aim of this study was to investigate the incidence of severe central neurological pathologies in isolated dizziness cases and the diagnostic efficiency of neuroimaging studies. METHODS: All applications for isolated dizziness to an academic ED between January 1, 2011, and December 31, 2017 were retrospectively reviewed. The frequency of these admissions, the demographic data of the patients, the results of cranial computed tomography (CT) and diffusion-weighted magnetic resonance imaging (DW-MRI) studies, and the central neurological causes of isolated dizziness were recorded. RESULTS: The percentage of patients with isolated dizziness among all ED admissions was 2.5% (29,510/1,190,857). The median age of these patients was 52 years (interquartile range: 38 to 66) and 58% were female. During the study period, the rate of neuroimaging studies for isolated dizziness increased year by year, and a total of 6406 (21.7%) cranial CTs and 2896 (9.8%) DW-MRIs were performed. The diagnostic yield of neuroimaging studies was 0.6% for cranial CT and 3.9% for DW-MRI. Central neurological disorders were detected in 143 (0.48%) patients with isolated dizziness. The most common causes were posterior circulation ischemic strokes (47.5%), other ischemic strokes (18.9%), vertebrobasilar insufficiency (10.5%), and transient ischemic attack (8.4%). CONCLUSIONS: Isolated dizziness is rarely associated with central neurological pathologies. Neuroimaging studies, especially cranial CT, have low diagnostic yield in isolated dizziness and should therefore not be routine in the evaluation process.

Non-Invasive CPAP Ventilation in Acute Carbon Monoxide Poisoning.

Oxygen is the main treatment of carbon monoxide (CO) poisoning. In two simultaneous cases, the efficacy of conventional and continuous positive airway pressure (CPAP)-administered oxygen therapy was compared. A 63-year-old man and his 58-year-old wife were brought to the emergency department with complaints of dizziness, headache, and nausea. The man had a history of congestive heart failure and additionally had shortness of breath. Initial carboxyhemoglobin (COHb) values were 26% in the male patient and 24% in his wife. For the female patient, oxygen therapy was performed with a reservoir balloon mask; a CPAP device was used for the male patient. The COHb levels decreased below five percent after approximately two hours in the male patient and at the end of five hours in his wife. In follow-up, symptomatic relief was achieved in both patients and no additional complications were observed. According to our experience, CPAP ventilation can be a new and effective method for oxygen therapy in CO poisoning.

Axillary artery laceration after anterior shoulder dislocation reduction.

INTRODUCTION: Glenohumeral dislocation is the most commonly encountered dislocation in the emergency department. The most frequent complications of glenohumeral dislocation are rotator cuff tears and an increase in the risk of recurrent dislocation. Less common acute complications include fractures, neurological complications and vascular injuries. The incidence of axillary artery injury associated with shoulder dislocation is reported to be about 1-2%. CASE: An 81-year-old male presented to the emergency department with pain in the right shoulder after a fall. On physical examination, the shoulder was in slight abduction and external rotation. Shoulder movements were painful and there was a swelling in the axillary region which was tender to palpation. There was no sensory or motor deficit and the peripheral pulses were equal and palpable. Following the administration of analgesics, shoulder reduction was performed using the flexion-adduction-external rotation method. After reduction, the patient started complaining of axillary pain. On control examination, the patient did not have any motor or sensory deficits, but peripheral pulses were not palpable on the right arm. The right upper extremity computed tomography angiography, which was performed with the suspicion of vascular injury, revealed a right axillary artery rupture. CONCLUSION: Axillary artery injury accompanying anterior shoulder dislocation is a rare but serious condition which may result in limb loss and death.

Non-urgent adult patients in the emergency department: Causes and patient characteristics.

OBJECTIVE: Non-urgent patients are one of the important causes of emergency department (ED) overcrowding. In this study, it is aimed to identify the characteristics of these patients and the reasons why they prefer the ED. METHOD: This study was conducted during regular office hours. The characteristics of non-urgent patients, their complaints, the frequency of visits to family physicians (FPs), the frequency of using the Central Hospital Appointment System (CHAS) and reasons for preferring the ED were questioned by a questionnaire. RESULTS: This study was conducted on 624 patients. Among them, 326 (52.2%) were male. The mean age was 38.4 years (SD: 14.4). It was identified that 80.3% of the patients had no chronic disease and that 97.4% had health insurance. The most common complaints at presentation were musculoskeletal system pain (25.2%) and upper respiratory tract infections symptoms (19.7%). It was identified that 28.7% of the patients did not prefer to visit their FPs and that 48.6% did not use the CHAS. The reasons of preferring ED were as follows: rapid physical examination (36.4%), not being able to book an earlier appointment at alternative health facilities (30.9%), being close to the facility (12.8%) and being at the hospital for a different reason (12.3%). Among the patients, 20.2% did not express any particular reason. CONCLUSIONS: Non-urgent patients who admitted to the ED are mostly middle-aged patients with no chronic disease. They usually visit the ED for preventable reasons. The use of alternative health facilities and CHAS should be encouraged.