Clinical Characteristics, Etiology, and Outcomes of Hypothermia in Well-appearing Children Referred to the Emergency Department.

BACKGROUND: Hypothermia, as a sign of serious bacterial infection (SBI) in children and infants older than 90 days is poorly characterized, especially in the post-pneumococcal vaccine era. OBJECTIVES: To assess the prevalence of SBI in children and infants presenting to the pediatric emergency department (PED) with reported or documented hypothermia. METHODS: Retrospective data analysis was conducted of all well-appearing children aged 0-16 years who presented with a diagnosis of hypothermia at two tertiary PEDs from 2010 to 2019. RESULTS: The study comprised 99 children, 15 (15.2%) age 0-3 months, 71 (71.7%) 3-36 months, and 13 (13.1%) > 36 months. The youngest age group had increased length of stay in the hospital (P < 0.001) and increased rates of pediatric intensive care unit admissions (P < 0.001). Empirical antibiotic coverage was initiated in 80% of the children in the 0-3 months group, 21.1% in the 3-36 months group, and 15.4% in > 36 months (P < 0.001). Only one case of SBI was recorded and no bacteremia or meningitis. Hypothermia of unknown origin was the most common diagnosis in all age groups (34%, 42%, 46%), respectively, followed by bronchiolitis (26%) and hypoglycemia (13.3%) for 0-3 month-old children, unspecified viral infection (20%) and otitis media (7%) for 3-36-month old, and unspecified viral infection (23%) and alcohol intoxication (15.2%) in > 36 months. CONCLUSIONS: There is a low incidence of SBI in well-appearing children presenting to the PED with hypothermia and a benign course and outcome in those older than 3 months.

The yield of ophthalmoscopy as a screening tool for intracranial pathology in pediatric headache.

Headache is a common complaint in children who present at the pediatric emergency department (PED). Serious conditions such as intracranial tumors and idiopathic intracranial hypertension (IIH) should be rapidly ruled out. Ophthalmoscopy for the presence of papilledema has long been considered critical to the assessment of headaches in children; however, the yield of this procedure is poorly validated. This retrospective study implemented a computerized search of the medical records of a single tertiary center to identify all children aged 2-18 years who presented at the PED complaining of headache between 2007 and 2017. The clinical, demographic, radiographic, and laboratory data were analyzed. Of the 948 children aged 2-18 years who presented at the PED complaining of headache, 536 had an ophthalmoscopy examination carried out by an ophthalmologist. Forty-one had papilledema, of whom 7 had an intracranial tumor, 15 had IIH, and 9 had optic nerve head drusen. Of the 495 children without papilledema, 3 had intracranial tumor, and 11 had IIH. The sensitivity and specificity of papilledema for the diagnosis of intracranial tumor were 70% and 93.5%, respectively, with an NPV and PPV of 99.4% and 17.1%, respectively. The sensitivity and specificity of papilledema for the diagnosis of intracranial pathology in general were 61.1% and 96.2%, respectively, with an NPV and PPV of 97.2% and 53.7%, respectively.  Conclusion: Assessment by ophthalmoscopy for papilledema in children presenting to the PED with headache had high sensitivity and high specificity, thus reinforcing the importance of ophthalmoscopy as a screening tool in these children. What is Known: • Headache is a common complaint in children. Serious intracranial pathologies need to be rapidly excluded. • Ophthalmoscopy for the presence of papilledema is commonly used as a screening tool for intracranial pathology, but this procedure is poorly validated. What is New: • Ophthalmoscopy for the assessment of papilledema in children who present with headache to the pediatric emergency department is shown to exhibit sensitivity and specificity for the diagnosis of intracranial pathology.

Severe Acute Respiratory Syndrome Coronavirus 2 in Infants Younger Than 90 Days Presenting to the Pediatric Emergency Department: Clinical Characteristics and Risk of Serious Bacterial Infection.

OBJECTIVES: There are scant data on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in infants younger than 90 days. This study was designed to characterize COVID-19 presentation and clinical course in this age group and evaluate the risk of serious bacterial infection. METHODS: Data on all SARS-CoV-2-polymerase chain reaction-positive infants presenting to the pediatric emergency department (PED) were retrospectively collected, followed by a case-control study comparing those infants presenting with fever (COVID group) to febrile infants presenting to the PED and found to be SARS-CoV-2 negative (control group). RESULTS: Of the 96 PCR-positive SARS-CoV-2 infants who met the inclusion criteria, the most common presenting symptom was fever (74/96, 77.1%) followed by upper respiratory tract infection symptoms (42/96, 43.8%). Four (4.2%) presented with symptoms consistent with brief resolved unexplained event (4.2%).Among the febrile infants, the presenting symptoms and vital signs were similar in the COVID and control groups, with the exception of irritability, which was more common in the control group (8% and 26%; P < 0.01). The SARS-CoV-2-positive infants had decreased inflammatory markers including: C-reactive protein (0.6 ± 1 mg/dL vs 2.1 ± 2.7 mg/dL; P < 0.0001), white blood cell count (9.3 ± 3.4 × 10 9 /L vs 11.8 ± 5.1 × 10 9 /L; P < 0.001), and absolute neutrophils count (3.4 ± 2.4 × 10 9 /L vs 5.1 ± 3.7 × 10 9 /L; P < 0.001). The rate of invasive bacterial infection was similar between groups (1.4% and 0%; P = 0.31). No mortality was recorded. Although not significantly different, urinary tract infections were less common in the COVID group (7% and 16%; P = 0.07). CONCLUSIONS: The SARS-CoV-2 infection in infants aged 0 to 90 days who present to the PED seems to be mostly mild and self-limiting, with no increased risk of serious bacterial infection.

Predicting factors for complications in peripheral intravenous catheters in the pediatric population.

AIM: To characterise the association between peripheral intravenous catheter (PIVC) gauge (G), the patient's age, insertion site and complication incidence. METHODS: This prospective study was performed in Hadassah Medical Center, Jerusalem, Israel, between June 2018 and March 2019. Children with PIVC admitted to the paediatric departments were included. PIVCs were evaluated daily. RESULTS: A total of 113 children with 132 PIVCs were included in the study. The most common site of insertion was the antecubital fossa (43.9%). PIVCs were most commonly used for intravenous (IV) antibiotics (46.6%). Complications were observed for 40.9% PIVCs. Dislodgement was the most common complication. The complication rate was higher for the lower limbs (60%) and external jugular veins (100%) p = 0.002. In infants younger than 12 months, the complication rate was higher for 22 G PIVCs or larger (58.7% versus 27.5%; p = 0.05). In contrast, for the 1-6 years age group, PIVCs smaller than 24 G had a higher complication rate (p = 0.004). Patients with comorbidities had a higher complication rate (p = 0.003). CONCLUSION: Risk factors for complications are comorbidities and sites of insertion other than the upper limbs. In infants, 24 G PIVC or smaller should be inserted, whereas 22 G PIVC or larger are superior for 1- to 6-year-old children.

Factors Associated With Increased Risk of Pediatric Orbital Cellulitis-Who Should Be Scanned?

BACKGROUND: Evaluation of a child with POC/OC is complicated due difficulties in physical examination and risks of imaging by computed tomography. METHOD: Retrospective review of children 0-16 years admitted to the pediatric emergency department for POC/OC from 2009 to 2019. RESULTS: Ten years study period, 243 children younger than 16 years presented to the pediatric emergency department with a diagnosis of POC/OC. OC was documented in 51 (20.6%) patients. The mean age was 7.8 years (±4.3 years). Fever (80.4%), upper respiratory tract infection (43%), swelling of both eyelids (96%), proptosis (33.3%), and tenderness on percussion (24.5%) were more common in comparison to POC (P = 0.0001, 0.03, 0.0001, 0.0001, 0.0001 respectively). All children with suspected diagnosis of OC underwent computed tomography scan. POC accounted for 196 patients. Mean age was 4.6 (±4.3) years. Twenty percent of the cases were recorded as local trauma or insect bite in the infected eye.Mean leukocyte count in the OC group had higher mean of 15.2 (109/L) versus 13.4(109/L) (P = 0.05), absolute neutrophil count was significantly higher in the OC 11.3(109/L) versus 7.2(109/L) (P = 0.0001) whereas the lymphocyte count was higher in the POC 4.5(109/L) versus 2.4(109/L) (P = 0.0001), NLR of 0.318 correlates with orbital cellulitis with sensitivity of 75.5% and specificity of 77.4%.Patients with OC had mean C-reactive protein levels of 11.7 (mg/dL) versus 4.9(mg/dL) (P = 0.0001), erythrocyte sedimentation rate was elevated in the OC 53.6 (cm/h) versus 36.4 (cm/h) (P = 0.02).Based on the aforementioned study a risk calculator for OC was formulated with 6 major variables. CONCLUSIONS: Differentiation between POC/OC is cardinal. This study highlights the importance of ancillary laboratory tests especially C-reactive protein in the assessment of infections of the eye.

Pediatricians as Case Managers Reduce the Exposure to Computerized Tomography in Children Experiencing Minor Head Trauma.

BACKGROUND: Head trauma is one of the most common reasons for pediatric emergency medicine department (PED) visits. Computerized tomography (CT) scan is considered the criterion standard for the diagnosis of traumatic brain injury but was shown to increases the risk of malignancies. METHODS: We retrospectively analyzed collected data of all children (ages 0-16 years) experiencing mild head trauma who were admitted to a single center, from January 1, 2010, to December 31, 2015. Comparison between patients treated by pediatricians/pediatric emergency medicine physicians (PEMP) with those treated by surgeons regarding CT rates and prognosis was done. RESULTS: During the previously mentioned period, 4232 children presented to the PED after minor head trauma, the average age was 5.4 (±4) years and 67.1% were male. Head CT was done in 7.7%, of which 30.7% had positive findings. Younger children tended to have higher percentage of positive findings on CT scan (60%, 43.8%, 26.6%, P = 0.003, for children up to 5 months, 5-24 months, and older than 24 months, respectively). Pediatricians ordered less CT scans when compared with surgeons (5.4% vs 8.5%, P < 0.001). Moreover, they had higher rates of positive findings on CT scan (52.5% vs 25.8%, P < 0.001). When all other characteristics were similar, if the case manager was a pediatrician, the patient's chances to undergo a CT scan were 4.3 times lower than if the case manager was a surgeon (odds ratio, 4.277; confidence interval, 2.274-7.104). No difference in readmissions or other complications were found between the 2 groups. DISCUSSION: This study highlights that when the case manager of children with minor head trauma is a pediatrician/PEMP, CT scan rates and thus exposure to radiation are diminished without a failure to detect clinically important traumatic brain injury.In conclusion, our findings suggest that when possible, all children experiencing minor head trauma should be treated by a pediatrician/PEMP in the PED.

Microhematuria as an Indicator of Significant Abdominal Injury.

BACKGROUND AND OBJECTIVES: Trauma is one of the leading causes of morbidity and mortality in the pediatric population. In many centers, microhematuria is used as a screening tool for the presence of significant abdominal injury and as an indication for further imaging. Our objective was to evaluate the role of microhematuria by dipstick as an indicator of significant abdominal injury in children. METHODS: A retrospective review of children aged 0 to 16 years admitted for a motor vehicle accident or a fall from 2007 to 2017 who had urinalyses performed. RESULTS: The charts of 655 children were reviewed. Microhematuria was found in 100 children, of whom 49 (49%), 28 (28%), and 23 (23%) had small, moderate, and large amounts of hematuria, respectively. Of the children who had microhematuria, 41 underwent a computed tomography scan. Positive findings were recorded in 16 (39%) of these patients. There was a clear association between microhematuria as detected by the urine dipstick and a significant finding on the computed tomography scan (P = 0.002). The sensitivity of microhematuria for significant abdominal pathology on imaging was 66.6% and the specificity was 68.3% (positive predictive value, 39%; negative predictive value, 87.1%). Microhematuria was associated with increased length of stay in the hospital (P < 0.001), surgical interventions (P = 0.036), and admission to the pediatric intensive care unit (P < 0.001). CONCLUSIONS: The diagnostic role of dipstick urine analysis in the assessment of intra-abdominal injury has low sensitivity and specificity. Nevertheless, it is still a valuable screening tool for the evaluation of the severity of injury.

Tickborne Relapsing Fever, Jerusalem, Israel, 2004-2018.

To compare tickborne relapsing fever (TBRF) in children and adults in Jerusalem, Israel, we collected data from the medical records of all 92 patients with TBRF during 2004-2018. The 30 children with TBRF had more episodes of fever and lower inflammatory markers than adult patients.

Arum palaestinum poisoning: revenge of the witch.

The Arum palaestinum plant is one of the 26 species of the Arum genus of the Araceae family. This plant species is found through the Mediterranean region, Western Asia, and Europe. The leaves and seeds of the plant contain needle-shaped oxalate crystals that can irritate the affected tissue (skin, oral cavity, or GI tract) upon exposure. Up to this date, there is no available literature supporting the epidemiology or the clinical manifestations of poisoning by this plant. We retrospectively reviewed all Arum palaestinum exposures to children younger than 18 years of age reported to the Israel National Poison Information Center during 2017 from the IPIC computerized data system. We extracted demographic data and clinical data from those digital files. We reviewed the files of 53 patients' files and found slight male predominance (58% vs. 42%), and the age of exposure ranged from 9 month to 15 years. The main site of exposure was at home in most cases (47%) followed by outdoor exposure in 40% of the cases. In 66% of the cases, minor clinical manifestations were reported, mainly erythema and mouth irritation, agitation, and drooling. Asymptomatic patients composed 34% of the cases. In 17% of the cases, patients were recommended to visit an ambulatory facility, and other 15% of the cases were referred to the emergency department. There were no cases of severe poisoning, upper airways compromise, or death.Conclusion: Poisoning by Arum palaestinum is one of the most common pediatric plant poisoning in Israel. Our study supports with clinical data for the first time that this poisoning is self-limited, confined to the affected mucosa, and most likely does not necessitate any intervention. What is Known • A. palaestinum poisoning is one of the most common pediatric plant poisoning in Israel. • The leaves and seeds of the plant contain needle-shaped oxalates crystals. What is New • Pediatric exposure to A. palaestinum usually causes only mild and self-limited poisoning. • Expectant observation is the preferred management of such exposure.

The molluscum contagiosum BOTE sign-Infected or inflamed?

BACKGROUND: Molluscum contagiosum (MC) is a common skin infection in the pediatric age group. The infection is self-limited and manifests as discrete, umbilicated skin-colored papules on any skin surface of the body. At times, complications such as local dermatitis and swelling, erythema, and pus formation may appear. These signs of inflammation are commonly presumed to represent bacterial infection. METHODS: This multicenter study was a retrospective analysis of data collected on all patients diagnosed with inflamed lesions secondary to MC and treated at the Hadassah Medical Centers and Shaare Zedek Medical Center in Jerusalem, Israel, from 1/1/2008 to 1/07/2018. Characteristics of children with positive cultures were compared to those with negative cultures and those with contaminants. RESULTS: A total of 56 cases were reviewed; the mean age at presentation was 4.6 years. Fever was reported in 12.5%, and 62.5% received systemic antibiotics because of their inflamed MC prior to admission. Fifty-five percent had sterile cultures or cultures growing only contaminants. Only seven had positive cultures with the common cutaneous pathogens. No statistical difference was observed between the patients with pathogenic isolates and patients with sterile or non-pathogenic cultures in terms of demographics, lesion characteristics, inflammatory markers, or length of hospitalization. CONCLUSION: The findings suggest that most cases of suspected MC-related secondary infection can be attributed to inflammation rather than to bacterial infection. However, in some cases, true bacterial infection should be suspected and treated accordingly.

Sedation Provided for Consultations in the Pediatric Emergency Department: Another Perspective.

BACKGROUND: Many procedures requiring sedation in the pediatric emergency department are performed by consultants from outside the department. This team usually includes orthopedic surgeons and general surgeons. As sedation is now a standard of care in such cases, we evaluated consultants' views on sedation. OBJECTIVES: To evaluate consultants' views on sedation. METHODS: A questionnaire with both open-ended questions and Likert-type scores was distributed to all orthopedic surgeons and general surgeons performing procedures during the study period. The questionnaire was presented at three medical centers. RESULTS: The questionnaire was completed by 31 orthopedic surgeons and 16 general surgeons. Although the vast majority (93-100%) considered sedation important, a high percentage (64-75%) would still perform such procedures without sedation if not readily available. CONCLUSIONS: Sedation is very important for patients and although consultants understand its importance, the emergency department staff must be vigilant in both being available and not allowing procedures to "escape" the use of sedation.

Questionnaire-based study showed that neonatal chest radiographs could be reliably interpreted using the WhatsApp messaging application.

AIM: We surveyed whether clinicians used the WhatsApp messaging application to view neonatal chest radiographs and asked a sub-sample to compare them with computer screen viewings. METHODS: The study was conducted at three university-affiliated medical centres in Israel from June-December 2016. Questionnaires on using smartphones for professional purposes were completed by 68/71 paediatric residents and 20/28 neonatologists. In addition, 11 neonatologists viewed 20 chest radiographs on a computer screen followed by a smartphone and 10 viewed the same radiographs in the opposite order, separated by a washout period of 2 months. After another 2 months, five from each group viewed the same radiographs on a computer screen. Different interpretations between viewing modes were assessed. RESULTS: Most respondents used WhatsApp to send chest radiographs for consultation: 82% of the paediatric residents and 80% of the neonatologists. The mean number of inconsistencies in diagnosis was 3.7/20 between two computer views and 2.9/20 between computer and smartphone views (p = 0.88) and the disease severity means were 3.7/20 and 2.85/20, respectively (p = 0.94). Neonatologists using WhatsApp only determined umbilical line placement in 80% of cases. CONCLUSION: WhatsApp was reliable for preliminary interpretation of neonatal chest radiographs, but caution was needed when assessing umbilical lines.

The Epidemiology, Injury Patterns and Outcomes of Horse-Related Injuries in Israeli Children.

BACKGROUND: Horse riding has become increasingly popular in recent years and is a common activity among children. As a result, pediatric horse-related injuries are frequently encountered in emergency departments. OBJECTIVES: To examine the characteristics of horse-related injuries in the pediatric population. METHODS: We collected and analyzed the data on all pediatric horse-related injuries presented to a tertiary hospital, level one trauma center, during the years 2006-2016. RESULTS: A total of 53 children with horse-related injuries were documented. Forty-two patients were male (79%) and their mean age was 11.13 ± 4.72 years. The most common mechanism of injury was falling off a horse (31 patients, 58%) and the most common type of injury was skeletal (32 patients, 60%). Head injuries occurred in 16 patients (30%) and facial injuries in 12 (23%). The mean Injury Severity Score (ISS) was 10.5 ± 6.32, and 15 patients (28%) had severe trauma (ISS > 15). Twenty-nine patients (55%) required trauma team intervention, 12 (23%) were admitted to the intensive care unit, and 24 (45%) required surgery. The mean length of hospitalization was 4.3 ± 3.14 days. CONCLUSIONS: Our study suggests that horse-related trauma may involve serious injuries and it exhibits typical injury patterns. Young boys are at highest risk. The potential severity of these injuries merits a thorough evaluation. We suggest that these injuries be triaged appropriately, preferably to a medical facility with proper trauma capabilities.

Using anaerobic blood cultures for infants younger than 90 days rarely showed anaerobic infections but increased yields of bacterial growth.

AIM: The use of anaerobic blood cultures in infants suspected of bacteraemia is controversial. Our children's hospital uses both aerobic and anaerobic media, regardless of the risk of anaerobic infection, and the aim of this study was to re-evaluate the use of anaerobic cultures in infants. METHODS: We collected retrospective data from 2002 to 2016 on all blood cultures taken from infants younger than 90 days in the Hadassah-Hebrew University Medical Centre, Jerusalem, Israel. The incidence and characteristics of infants with positive anaerobic blood cultures were assessed. RESULTS: During the study period, 51 035 blood cultures were drawn from 44 304 infants. Of these, 1496 (2.9%) were clinically significant positive cultures. Pathogenic obligatory anaerobic bacteraemia was extremely rare, with only 37 positive cultures (0.07%) from all of the cultures drawn. No specific risk factors for obligatory anaerobic bacteraemia could be defined, but as many as 174 (11.6%) clinically significant isolates were only detected in the anaerobic culture bottle. CONCLUSION: True anaerobic bacteraemia was extremely rare in neonates. Nevertheless, using anaerobic culture media may increase the overall yield of bacterial culture growth by isolating anaerobic-facultative bacteria. This should be weighed up against increasing the volume of blood used for the aerobic culture.

E-Bike-Related Trauma in Children and Adults.

BACKGROUND: Electric bike (e-bike) usage is growing worldwide, and so is the e-bike-related injury rate. OBJECTIVE: This study was undertaken to characterize e-bike-related injuries. METHODS: Data of all e-bike-related injuries presenting to our level I trauma center between 2014 and 2016 were collected and analyzed. Adult and pediatric (<18 years of age) e-bike-related injuries were then analyzed separately and compared. RESULTS: Forty-eight patients suffering from e-bike-related injuries presented to our trauma center between January 1, 2014 and December 31, 2016. Seventeen (35%) patients were <18 years of age and 40 (85%) were male. The overall most common mechanism of injury was falling off the e-bike in 24 patients (50%), followed by collision with a static object in 9 patients (18.8%). Head (38%) and facial (33%) injuries were most common in children. In adult patients, orthopedic trauma was predominant, with extremity fractures in 35 (73%) followed by significant lacerations in 14 patients (29%). Severe trauma (Injury Severity Score >15) was found in 17 (35%) patients. The duration of hospital stay was 10.8 ± 6 days, 12 patients (25%) required a stay in the intensive care unit, and 21 patients (43.7%) required surgery. Compared to adults, children (<18 years of age) had significantly more head and face injuries (p = 0.05). CONCLUSION: Our study suggests that e-bike-related trauma may involve serious injuries and have typical injury patterns that resemble those seen in motorcycle-related injuries. Children are more likely to suffer head and face injuries because of their higher head to body ratio. We suggest that these injuries should therefore be triaged appropriately, preferably to a medical facility with proper trauma capabilities.

Physical activity and maximal oxygen uptake in adults with Prader-Willi syndrome.

BACKGROUND: Prader-Willi Syndrome (PWS) is the most common genetic syndrome causing life-threatening obesity. Strict adherence to a low-calorie diet and regular physical activity are needed to prevent weight gain. Direct measurement of maximal oxygen uptake (VO2 max), the "gold standard" for assessing aerobic exercise capacity, has not been previously described in PWS. OBJECTIVES: Assess aerobic capacity by direct measurement of VO2 max in adults with PWS, and in age and BMI-matched controls (OC), and compare the results with values obtained by indirect prediction methods. METHODS AND PATIENTS: Seventeen individuals (12 males) age: 19-35 (28.6 ± 4.9) years, BMI: 19.4-38.1 (27.8 ± 5) kg/m2 with genetically confirmed PWS who exercise daily, and 32 matched OC (22 males) age: 19-36 (29.3 ± 5.2) years, BMI: 21.1-48.1 (26.3 ± 4.9) kg/m2. All completed a medical questionnaire and performed strength and flexibility tests. VO2 max was determined by measuring oxygen consumption during a graded exercise test on a treadmill. RESULTS: VO2 max (24.6 ± 3.4 vs 46.5 ± 12.2 ml/kg/min, p < 0.001) and ventilatory threshold (20 ± 2 and 36.2 ± 10.5 ml/kg/min, p < 0.001), maximal strength of both hands (36 ± 4 vs 91.4 ± 21.2 kg, p < 0.001), and flexibility (15.2 ± 9.5 vs 26 ± 11.1 cm, p = 0.001) were all significantly lower for PWS compared to OC. Predicted estimates and direct measurements of VO2 max were almost identical for the OC group (p = 0.995), for the PWS group, both methods for estimating VO2 max gave values which were significantly greater (p < 0.001) than results obtained by direct measurements. CONCLUSIONS: Aerobic capacity, assessed by direct measurement of VO2 max, is significantly lower in PWS adults, even in those who exercise daily, compared to OCs. Indirect estimates of VO2 max are accurate for OC, but unreliable in PWS. Direct measurement of VO2 should be used for designing personal training programs and in clinical studies of exercise in PWS.

Paediatric Erythema Multiforme: Epidemiological, Clinical and Laboratory Characteristics.

Erythema multiforme (EM) is an immune-mediated reaction presenting as acrofacial target lesions. Most studies utilize the outdated classification, which includes EM, Stevens-Johnson syndrome and toxic epidermal necrolysis as related entities. We describe here epidemiological, aetiological, clinical, laboratory and treatment characteristics of paediatric EM. This is a retrospective single-centre study, performed between 2000 and 2013. Of 119 children given a diagnosis of EM, only 30 met clinical criteria and were included in this study. Most misdiagnosed cases were non-specific eruptions and urticaria multiforme. Mean age was 11.3 years. Fifty percent had mucosal involvement. An aetiology was observed in half of the patients. Seventy percent of patients were admitted to hospital, 46.7% were treated with systemic steroids. Sixteen percent had recurrent EM. The most common identified infectious agent associated with EM in this study was Mycoplasma pneumonia and the cases associated with this infection may represent the recent entity, mycoplasma-induced rash and mucositis. Association with herpes simplex virus was not observed. Despite being a benign, self-limiting condition, children were over-treated in terms of hospitalization and therapy.

Characteristics of mesenteric lymphadenitis in comparison with those of acute appendicitis in children.

Mesenteric lymphadenitis (ML) is considered as one of the most common alternative diagnosis in a child with suspected acute appendicitis (AA). In this retrospective study, patients diagnosed with ML (n = 99) were compared in terms of demographic, clinical, and laboratory findings to patients diagnosed with AA (n = 102). This comparison was applied for both lymph nodes smaller and larger than 10 mm. When compared to patients with AA, patients with ML had significantly longer duration of symptoms prior to emergency department (ED) presentation (2.4 ± 2.6 vs 1.4 ± 1.4 days, P = 0.002) and multiple ED presentations (1.3 ± 0.7 vs 1.05 ± 0.3, P < 0.001) and had longer duration of stay in the ED (9.2 ± 5.9 vs 5.2 ± 4 h, P < 0.001), respectively. They also had significantly lower WBC (10.16 ± 4.7 × 103/dl vs 15.8 ± 4.4 × 103/dl, P < 0.001) with lymphocyte predominance (24.6 ± 14 vs 13 ± 8.7%, P < 0.001) and lower CRP levels (0.48 vs 1.6 mg/dl). Migration of pain (28 vs 7%), vomiting (62 vs 34%), and classic abdominal findings of AA (72 vs 20%) were all significantly more common for children with AA. When comparing lymph node size, no significant difference was found between those presenting with small and large nodes. CONCLUSION: This study highlights multiple clinical and laboratory findings that differentiate ML and AA. Moreover, the absence of any difference with regard to the lymph nodes size might suggest that lymph nodes enlargement is a non-specific finding. What is Known : • Mesenteric lymphadenitis is a very common diagnosis in children with suspected acute appendicitis. • Despite its prevalence, only few studies addressed the clinical characteristics of this clinical entity and their comparison with acute appendicitis. What is New: • Mesenteric lymphadenitis and acute appendicitis could be differentiated by multiple clinical and laboratory parameters. • No significant difference was found between those presenting with small and large lymph nodes.

Early detection of breast cancer using total biochemical analysis of peripheral blood components: a preliminary study.

BACKGROUND: Most of the blood tests aiming for breast cancer screening rely on quantification of a single or few biomarkers. The aim of this study was to evaluate the feasibility of detecting breast cancer by analyzing the total biochemical composition of plasma as well as peripheral blood mononuclear cells (PBMCs) using infrared spectroscopy. METHODS: Blood was collected from 29 patients with confirmed breast cancer and 30 controls with benign or no breast tumors, undergoing screening for breast cancer. PBMCs and plasma were isolated and dried on a zinc selenide slide and measured under a Fourier transform infrared (FTIR) microscope to obtain their infrared absorption spectra. Differences in the spectra of PBMCs and plasma between the groups were analyzed as well as the specific influence of the relevant pathological characteristics of the cancer patients. RESULTS: Several bands in the FTIR spectra of both blood components significantly distinguished patients with and without cancer. Employing feature extraction with quadratic discriminant analysis, a sensitivity of ~90 % and a specificity of ~80 % for breast cancer detection was achieved. These results were confirmed by Monte Carlo cross-validation. Further analysis of the cancer group revealed an influence of several clinical parameters, such as the involvement of lymph nodes, on the infrared spectra, with each blood component affected by different parameters. CONCLUSION: The present preliminary study suggests that FTIR spectroscopy of PBMCs and plasma is a potentially feasible and efficient tool for the early detection of breast neoplasms. An important application of our study is the distinction between benign lesions (considered as part of the non-cancer group) and malignant tumors thus reducing false positive results at screening. Furthermore, the correlation of specific spectral changes with clinical parameters of cancer patients indicates for possible contribution to diagnosis and prognosis.

Return Visits in Infants Younger Than 90 Days Presenting to the Pediatric Emergency Department for Fever.

Fever in infants presenting to pediatric emergency departments (PEDs) often results in significant return visits (RVs). This retrospective study aimed to identify factors associated with RVs in febrile infants aged 0 to 90 days. Data from infants presenting to PED between 2018 and 2021 and returning within 7 days (RV group) were compared to age-matched febrile infants without RVs (control group). Each group had 95 infants with similar demographics and medical history. RVs were primarily due to positive cultures and persistent fever. The control group had higher initial hospitalization rates, longer PED stays, and increased antibiotic treatment. Prevalence of serious bacterial infections (SBIs) did not significantly differ. Higher hospitalization, prolonged PED stays, and initial antibiotic treatment were associated with reduced RV incidence despite similar SBI rates. Return visits in infants <90 days were primarily driven by persistent fever and positive cultures. Addressing these factors through targeted parental education and improved care protocols may reduce RVs.