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1.
Pediatr Emerg Care ; 40(1): 71-75, 2024 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-38157398

RESUMO

OBJECTIVE: Women in medicine generally have higher burnout and lower career satisfaction and work-life integration compared with men. This study identifies factors that contribute to burnout, career satisfaction, and work-life integration in women pediatric emergency medicine (PEM) physicians. METHODS: Self-identified women PEM physicians in the United States participated in a virtual focus group using Group Level Assessment methodology. Participants completed Group Level Assessment process steps of climate setting, generating, appreciating, reflecting, understanding, selecting, and action to (1) identify themes that contribute to burnout, career satisfaction, and work-life integration and (2) determine actionable factors based on these themes. Data were collected and thematically analyzed in real time through iterative processing. The group prioritized identified themes through rounds of distillation. RESULTS: Seventeen women participated, representing 10 institutions (ages 30s-70s, 69% employed full-time). Participants identified 3 main themes contributing to burnout, career satisfaction, and work-life integration: (1) gender inequities, (2) supportive leadership, and (3) balance with family life. Actionable items identified were as follows: (1) development of initiatives to equalize pay, opportunity, and career advancement among genders; (2) implementation of an institutional focus on supportive and collaborative leadership; and (3) improvement of resources and supports for physicians with family responsibilities. CONCLUSIONS: Women PEM physicians identified gender inequities, leadership, and balance with family life as major themes affecting their burnout, career satisfaction, and work-life integration. Several action steps were identified and can be used by individuals and institutions to improve work-life integration for women PEM physicians.


Assuntos
Esgotamento Profissional , Medicina de Emergência , Medicina de Emergência Pediátrica , Médicos , Criança , Humanos , Masculino , Feminino , Estados Unidos , Satisfação no Emprego , Liderança , Inquéritos e Questionários
2.
Pediatr Emerg Care ; 2023 Oct 20.
Artigo em Inglês | MEDLINE | ID: mdl-37857469

RESUMO

OBJECTIVE: Women physicians report worse work-life integration, career satisfaction, and burnout than men. No studies have evaluated work-life integration and career satisfaction in pediatric emergency medicine (PEM) or explored gender differences for these outcomes. This study aims to (1) compare work-life integration, career satisfaction, and burnout in women and men PEM physicians and (2) compare associated individual and occupational factors to distinguish modifiable factors. METHODS: We distributed an electronic survey to assess well-being parameters in PEM physicians. We assessed career satisfaction and work-life integration with single-item measures. We used a 2-item screen to measure burnout. We performed descriptive analyses, univariate analysis to compare gender differences, and multivariate logistic regression analysis for each outcome. RESULTS: Two hundred thirty-nine PEM physicians participated, yielding a response rate of 50% (57% women; age range, 30-80 years). Overall satisfaction with work-life integration was 42.9%, with 34.3% of women reporting appropriate work-life integration, compared with 55.4% of men (P = 0.001). Career satisfaction rate was 77.8%, with 71.6% of women reporting career satisfaction, compared with 86.1% of men (P = 0.008). Burnout rate was 44.5%, with 53.7% of women reporting burnout compared with 33.7% of men (P = 0.002). Modifiable factors identified include perception of unfair compensation, inadequate physical and mental health support provided by organization, feeling unappreciated, inadequate provider staffing, inadequate resources for patient care, lack of advance notice or control of work schedule, and inadequate sleep. CONCLUSIONS: Of PEM physicians, women have worse work-life integration, less career satisfaction, and more burnout than men. The PEM community should devote resources to modifiable occupational factors to improve gender disparities in well-being parameters.

4.
Child Abuse Negl ; 135: 105971, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36427395

RESUMO

BACKGROUND: Abusive head trauma (AHT) is the leading cause of death from physical abuse in children. Reports regarding the impact of the COVID-19 pandemic on rates and severity of AHT are limited and with conflicting results. OBJECTIVE: To determine the number and clinical characteristics of AHT cases presenting to a pediatric tertiary care center during the first year of the COVID-19 pandemic compared to the two prior years. PARTICIPANTS AND SETTING: We performed a retrospective cohort study of patients <5 years old diagnosed with AHT at a single pediatric tertiary care center over a three-year period. METHODS: Data were obtained for the pandemic year and two years before, including demographics, length of stay, physical and retinal examination findings, radiologic studies, electroencephalogram results, and mortality. RESULTS: There were 27 cases of AHT during the first year of the pandemic and 55 during the two pre-pandemic years. Length of stay was similar for the two cohorts. The mortality rate was higher during the pandemic (29.6 % vs. 3.6 %; p < .01), as were the proportion of patients with retinal hemorrhages (84.6 % vs. 41.5 %; p < .01) and abnormal cervical spine imaging (52.6 % vs. 21.2 %; p = .02). There were no differences in age, sex, race, abnormalities on dermatological exam, skeletal surveys, and electroencephalograms. CONCLUSIONS: We did not observe an increase in the number of patients with AHT during the pandemic but did see an increase in mortality, patients with retinal hemorrhages, and patients with abnormalities on cervical spine imaging. These data suggest a higher severity of AHT presenting to a pediatric tertiary care center during the pandemic.


Assuntos
COVID-19 , Maus-Tratos Infantis , Traumatismos Craniocerebrais , Humanos , Criança , Lactente , Pré-Escolar , Pandemias , Estudos Retrospectivos , Hemorragia Retiniana , COVID-19/epidemiologia , COVID-19/complicações , Traumatismos Craniocerebrais/etiologia
5.
J Cereb Blood Flow Metab ; 42(12): 2255-2269, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-35854408

RESUMO

Epinephrine is the principal resuscitation therapy for pediatric cardiac arrest (CA). Clinical data suggest that although epinephrine increases the rate of resuscitation, it fails to improve neurological outcome, possibly secondary to reductions in microvascular flow. We characterized the effect of epinephrine vs. placebo administered at resuscitation from pediatric asphyxial CA on microvascular and macrovascular cortical perfusion assessed using in vivo multiphoton microscopy and laser speckle flowmetry, respectively, and on brain tissue oxygenation (PbO2), behavioral outcomes, and neuropathology in 16-18-day-old rats. Epinephrine-treated rats had a more rapid return of spontaneous circulation and brisk immediate cortical reperfusion during 1-3 min post-CA vs. placebo. However, at the microvascular level, epinephrine-treated rats had penetrating arteriole constriction and increases in both capillary stalling (no-reflow) and cortical capillary transit time 30-60 min post-CA vs. placebo. Placebo-treated rats had increased capillary diameters post-CA. The cortex was hypoxic post-CA in both groups. Epinephrine treatment worsened reference memory performance vs. shams. Hippocampal neuron counts did not differ between groups. Resuscitation with epinephrine enhanced immediate reperfusion but produced microvascular alterations during the first hour post-resuscitation, characterized by vasoconstriction, capillary stasis, prolonged cortical transit time, and absence of compensatory cortical vasodilation. Targeted therapies mitigating the deleterious microvascular effects of epinephrine are needed.


Assuntos
Reanimação Cardiopulmonar , Parada Cardíaca , Animais , Ratos , Microscopia , Circulação Cerebrovascular/fisiologia , Parada Cardíaca/tratamento farmacológico , Parada Cardíaca/complicações , Epinefrina/farmacologia , Epinefrina/uso terapêutico , Ressuscitação
6.
J Am Coll Emerg Physicians Open ; 3(4): e12760, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-35865130

RESUMO

Objectives: There has been controversy over whether ketamine affects intracranial pressure (ICP) in children. Transcranial Doppler ultrasound (TCD) is a validated technique used to assess ICP changes noninvasively. Gosling pulsatility index (PI) directly correlates with ICP changes. The objective of this study was to quantify PI changes as a surrogate marker for ICP changes in previously healthy children receiving intravenous ketamine for procedural sedation. Methods: We performed a prospective, observational study of patients 5-18 years old who underwent sedation with intravenous ketamine as monotherapy. ICP changes were assessed by surrogate PI at baseline, immediately after ketamine administration, and every 5 minutes until completion of the procedure. The primary outcome measure was PI change after ketamine administration compared to baseline (denoted ΔPI). Results: We enrolled 15 participants. Mean age was 9.9 ± 3.4 years. Most participants underwent sedation for fracture reduction (87%). Mean initial ketamine dose was 1.4 ± 0.3 mg/kg. PI decreased at all time points after ketamine administration. Mean ΔPI at sedation onset was -0.23 (95% confidence interval [CI] = -0.30 to -0.15), at 5 minutes was -0.23 (95% CI = -0.28 to -0.18), at 10 minutes was -0.14 (95% CI = -0.21 to -0.08), at 15 minutes was -0.18 (95% CI = -0.25 to -0.12), and at 20 minutes was -0.19 (95% CI = -0.26 to -0.12). Using a clinically relevant threshold of ΔPI set at +1 (+8 cm H2O), no elevation in ICP, based on the PI surrogate marker, was demonstrated with 95% confidence at all time points after ketamine administration. Conclusions: Ketamine did not significantly increase PI, which was used as a surrogate marker for ICP in this sample of previously healthy children. This pilot study demonstrates a model for evaluating ICP changes noninvasively in the emergency department.

7.
Pediatr Res ; 91(4): 820-827, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-33846553

RESUMO

BACKGROUND: Asphyxial cardiac arrest (CA) is a significant cause of death and disability in children. Using juvenile Osteogenic disorder Shionogi (ODS) rats that, like humans, do not synthesize ascorbate, we tested the effect of ascorbate deficiency on functional and histological outcome after CA. METHODS: Postnatal day 16-18 milk-fed ODS and wild-type Wistar rats underwent 9-min asphyxial CA (n = 8/group) or sham surgery (n = 4/group). ODS mothers received ascorbate in drinking water to prevent scurvy. Levels of ascorbate and glutathione (GSH) were measured in plasma and hippocampus at baseline and after CA. Neurologic deficit score (NDS) was measured at 3, 24, and 48 h and hippocampal neuronal counts, neurodegeneration, and microglial activation were assessed at day 7. RESULTS: ODS rats showed depletion of plasma and hippocampal ascorbate, attenuated hippocampal neurodegeneration and microglial activation, and increased CA1 hippocampal neuron survival vs. Wistar rats while NDS were similar. Hippocampal GSH levels were higher in ODS vs. Wistar rats at baseline and 10 min, whereas hypoxia-inducible factor-1α levels were higher in Wistar vs. ODS rats at 24 , after CA. CONCLUSION: Ascorbate-deficient juvenile ODS rats appear resistant to neurodegeneration produced by asphyxia CA, possibly related to upregulation of the endogenous antioxidant GSH in brain. IMPACT: Like humans and unlike other rodents, osteogenic disorder Shionogi (ODS) rats do not synthesize ascorbate, and thus may serve as a useful model for studying the role of ascorbate in human disease. Conflicting evidence exists regarding ascorbate's protective versus detrimental effects in animal models and clinical studies. Ascorbate-deficient ODS rats are resistant to neurodegeneration after experimental cardiac arrest.


Assuntos
Asfixia , Parada Cardíaca , Animais , Ácido Ascórbico , Asfixia/complicações , Parada Cardíaca/etiologia , Hipocampo/patologia , Ratos , Ratos Wistar
8.
Pediatr Emerg Care ; 37(3): e110-e115, 2021 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-29746364

RESUMO

OBJECTIVE: The aim of this study was to assess the management and outcomes of healthy pediatric patients diagnosed radiologically with transient and benign small bowel-small bowel intussusception (SB-SBI). METHODS: Retrospective cohort study of healthy patients 0 to 18 years of age who presented to a children's hospital emergency department from January 1, 2005, to June 30, 2015, and had transient and benign SB-SBI characterized by spontaneous resolution (ie, transient), diameter of less than 2.5 cm, no lead point, normal bowel wall thickness, nondilated proximal small bowel, and no colonic involvement (ie, benign radiographic features). Charts were reviewed for demographics, clinical presentation, radiologic studies obtained, outcomes, and further management. Medical and radiologic records were also reviewed for 1 year after presentation for any subsequent pathologic diagnoses. RESULTS: Sixty-eight patients were included in our study, with a total of 87 episodes of transient and benign SB-SBI on initial or follow-up examination. Overall, 39 patients (57%) were admitted to the hospital, and 38 patients (56%) had a surgical consultation. Twenty-four patients (35%) had further radiologic studies obtained, including computed tomography scans, esophagogastroduodenoscopy, Meckel's scan, barium swallow studies, and magnetic resonance imaging. All studies were negative for concerning pathology including apparent lead points. None of the patients required surgical intervention or had any complications. CONCLUSIONS: Transient and benign SB-SBIs with reassuring radiologic and clinical features diagnosed in healthy pediatric patients are likely incidentally found and are unlikely to be associated with a pathologic lead point.


Assuntos
Intussuscepção , Criança , Hospitalização , Humanos , Intestino Delgado/diagnóstico por imagem , Intussuscepção/diagnóstico por imagem , Intussuscepção/terapia , Estudos Retrospectivos , Tomografia Computadorizada por Raios X
9.
Pediatr Emerg Care ; 37(12): e1051-e1056, 2021 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-31464878

RESUMO

OBJECTIVES: Management of spontaneous pneumomediastinum in the pediatric population is highly variable. There are limited data on the use of diagnostic tests and the need for admission. Our objectives were to characterize the management of pediatric spontaneous pneumomediastinum, determine the diagnostic yield of advanced imaging, and describe the patients' outcomes. METHODS: This is a retrospective cohort study of all patients presenting to a single tertiary pediatric emergency department between January 2008 and February 2015 diagnosed with pneumomediastinum. Patients were identified using 2 complementary strategies: International Classification of Diseases, Ninth Revision billing codes and a keyword search of the hospital radiology database. RESULTS: We identified 183 patients with spontaneous pneumomediastinum. The mean age was 12.8 ± 4.8 years. Diagnosis was established by chest radiograph (CXR) in 165 (90%) patients, chest computed tomography in 15 (8%), neck imaging in 2 (1%), and abdominal imaging in 1. After diagnosis, many patients underwent additional studies: repeat CXR (99, 54%), chest computed tomography (53, 29%), esophagram (45, 25%), and laryngoscopy (15, 8%). Seventy-eight percent of patients (n = 142) were admitted with a median length of stay of 27 hours (18.4-45.6 hours). Six patients returned to the emergency department within 96 hours for persistent chest pain; 2 were admitted, and 1 was found to have worsening pneumomediastinum on CXR. We performed a secondary analysis on 3 key subgroups: primary spontaneous pneumomediastinum (64, 35%), secondary gastrointestinal-associated pneumomediastinum (31, 17%), and secondary respiratory-associated pneumomediastinum (88, 48%). No patients in the study received an invasive intervention for pneumomediastinum. In all patients, further studies did not yield additional diagnostic information. CONCLUSIONS: Our data suggest that patients with spontaneous pneumomediastinum who are clinically well appearing can be managed conservatively with clinical observation, avoiding exposure to radiation and invasive procedures.


Assuntos
Enfisema Mediastínico , Adolescente , Dor no Peito , Criança , Humanos , Enfisema Mediastínico/diagnóstico por imagem , Enfisema Mediastínico/terapia , Radiografia , Estudos Retrospectivos , Tomografia Computadorizada por Raios X
11.
Exp Neurol ; 335: 113522, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-33152354

RESUMO

Pediatric asphyxial cardiac arrest (ACA) often leaves children with physical, cognitive, and emotional disabilities that affect overall quality of life, yet rehabilitation is neither routinely nor systematically provided. Environmental enrichment (EE) is considered a preclinical model of neurorehabilitation and thus we sought to investigate its efficacy in our established model of pediatric ACA. Male Sprague-Dawley rat pups (post-natal day 16-18) were randomly assigned to ACA (9.5 min) or Sham injury. After resuscitation, the rats were assigned to 21 days of EE or standard (STD) housing during which time motor, cognitive, and anxiety-like (i.e., affective) outcomes were assessed. Hippocampal CA1 cells were quantified on post-operative day-22. Both ACA + STD and ACA + EE performed worse on beam-balance vs. Sham controls (p < 0.05) and did not differ from one another overall (p > 0.05); however, a single day analysis on the last day of testing revealed that the ACA + EE group performed better than the ACA + STD group (p < 0.05) and did not differ from the Sham controls (p > 0.05). Both Sham groups performed better than ACA + STD (p < 0.05) but did not differ from ACA + EE (p > 0.05) in the open field test. Spatial learning and declarative memory were improved and CA1 neuronal loss was attenuated in the ACA + EE vs. ACA + STD group (p < 0.05). Collectively, the data suggest that providing rehabilitation after pediatric ACA can reduce histopathology and improve motor and cognitive ability.


Assuntos
Asfixia Neonatal/psicologia , Asfixia Neonatal/reabilitação , Cognição , Meio Ambiente , Parada Cardíaca/psicologia , Parada Cardíaca/reabilitação , Reabilitação Neurológica/métodos , Animais , Animais Recém-Nascidos , Ansiedade/etiologia , Ansiedade/psicologia , Asfixia Neonatal/patologia , Região CA1 Hipocampal/patologia , Parada Cardíaca/patologia , Masculino , Memória , Desempenho Psicomotor , Ratos , Ratos Sprague-Dawley , Recuperação de Função Fisiológica , Aprendizagem Espacial
12.
Pediatr Emerg Care ; 36(1): e18-e20, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-28767532

RESUMO

Lightning strike injuries, although less common than electrical injuries, have a higher morbidity rate because of critical alterations of the circulatory system, respiratory system, and central nervous system. Most lightning-related deaths occur immediately after injury because of arrhythmia or respiratory failure. We describe the case of a pediatric patient who experienced cardiorespiratory arrest secondary to a lightning strike, where the Advanced Cardiac Life Support and Basic Life Support chain of survival was well executed, leading to return of spontaneous circulation and intact neurological survival. We review the pathophysiology of lightning injuries, prognostic factors of favorable outcome after cardiac arrest, including bystander cardiopulmonary resuscitation, shockable rhythm, and automatic external defibrillator use, and the importance of temperature management after cardiac arrest.


Assuntos
Reanimação Cardiopulmonar , Cardioversão Elétrica , Parada Cardíaca/terapia , Lesões Provocadas por Raio/complicações , Adolescente , Eletrocardiografia , Feminino , Parada Cardíaca/etiologia , Humanos , Hipotermia Induzida
13.
Prehosp Emerg Care ; 24(5): 683-692, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31800336

RESUMO

Background: Prehospital pediatric endotracheal intubation (ETI) is rarely performed. Previous research has suggested that pediatric prehospital ETI, when performed by ground advanced life support crews, is associated with poor outcomes. In this study, we aim to evaluate the first-attempt success rate, overall success rate and complications of pediatric prehospital ETI performed by critical care transport (CCT) personnel.Methods: We conducted a retrospective observational study in a multi-state CCT service performing rotor wing, ground, and fixed wing missions. We included pediatric patients (<18 years) for whom ETI was performed by CCT personnel (flight nurse or flight paramedic).Our primary outcome of interest was rate of first-attempt ETI. Secondary outcomes were overall rates of successful ETI, complications encountered, and outcomes of patients with unsuccessful intubation.Results: 993 patients were included (63.2% male, median age 12 years, IQR 4-16 years). 807/993 (81.3%) patients were intubated on the first attempt. Lower rates of successful first-attempt intubation were seen in younger ages (42.9% in infants ≤30 days of age). In multivariable logistic regression, lower odds (adjusted odds ratio, 95% confidence interval) of successful first-attempt ETI were associated with ages >30 days to <1 year (0.33, 0.18-0.61) and 2 to <6 years (0.60, 0.39-0.94) compared to patients 12 to <18 years. Patients given an induction agent and neuromuscular blockade (NMB) had a higher odds of first-attempt ETI success (1.53, 1.06-2.15). 13 (1.3%) had immediately recognized esophageal intubation and 33 (3.3%) had vomiting. No episodes of pneumothorax were reported. 962/993 (96.9%) patients were successfully intubated after all attempts. In patients without successful ETI (n = 31), supraglottic airways were used in 24, bag-valve mask ventilation in 5, and surgical cricothyroidotomy in 2, with an overall advanced airway success rate of 988/993 (99.5%).Conclusion: Critical care flight nurses and paramedics performed successful intubations in pediatric patients at a high rate of success. Younger age was associated with lower success rates. Improved ETI training for younger patients and use of an induction agent and NMB may improve airway management in critically ill children.


Assuntos
Serviços Médicos de Emergência , Auxiliares de Emergência , Intubação Intratraqueal , Adolescente , Criança , Pré-Escolar , Cuidados Críticos , Feminino , Humanos , Lactente , Masculino , Estudos Retrospectivos
14.
J Emerg Med ; 56(6): e115-e117, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31005364

RESUMO

BACKGROUND: Superabsorbent polymers (SAPs) are materials that can absorb large quantities of water. Small spherical SAPs are commonly marketed as toys for children. CASE REPORT: We report the case of a 4-year-old female who presented to a pediatric emergency department with a small, marble-sized SAP that was placed in her ear by herself during the course of play at daycare. On examination, the object was translucent and difficult to visualize. After multiple attempts at removal, the object was partially removed using an ear curette. The patient sustained a small tympanic membrane perforation. During a follow-up operative intervention by otorhinolaryngology, the remainder of the object was removed using a suction device and the tympanic membrane was repaired. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: While large SAPs associated with intestinal obstruction have been removed from the market, smaller SAPs can present a health risk when placed in orifices such as the ear or nose. Cases of foreign body SAPs have been misdiagnosed as ear infections and treated with topical antibiotics, which can lead to enlargement of the foreign body. Irrigation techniques and topical medications should not be used. SAPs are friable and can break into multiple pieces during removal attempts. Blunt tools, such as ear curettes, may be best suited for their removal. If the item breaks up during removal or if removal fails, urgent consultation with an otorhinolaryngologist is recommended.


Assuntos
Orelha/lesões , Jogos e Brinquedos/lesões , Pré-Escolar , Orelha/anormalidades , Orelha/fisiopatologia , Feminino , Corpos Estranhos , Humanos , Polímeros , Perfuração da Membrana Timpânica/etiologia
15.
Pediatr Res ; 85(4): 511-517, 2019 03.
Artigo em Inglês | MEDLINE | ID: mdl-30367162

RESUMO

BACKGROUND: Cerebral edema after cardiac arrest (CA) is associated with increased mortality and unfavorable outcome in children and adults. Aquaporin-4 mediates cerebral water movement and its absence in models of ischemia improves outcome. We investigated early and selective pharmacologic inhibition of aquaporin-4 in a clinically relevant asphyxial CA model in immature rats in a threshold CA insult that produces primarily cytotoxic edema in the absence of blood-brain barrier permeability. METHODS: Postnatal day 16-18 Sprague-Dawley rats were studied in our established 9-min asphyxial CA model. Rats were randomized to aquaporin-4 inhibitor (AER-271) vs vehicle treatment, initiated at return of spontaneous circulation. Cerebral edema (% brain water) was the primary outcome with secondary assessments of the Neurologic Deficit Score (NDS), hippocampal neuronal death, and neuroinflammation. RESULTS: Treatment with AER-271 ameliorated early cerebral edema measured at 3 h after CA vs vehicle treated rats. This treatment also attenuated early NDS. In contrast to rats treated with vehicle after CA, rats treated with AER-271 did not develop significant neuronal death or neuroinflammation as compared to sham. CONCLUSION: Early post-resuscitation aquaporin-4 inhibition blocks the development of early cerebral edema, reduces early neurologic deficit, and blunts neuronal death and neuroinflammation post-CA.


Assuntos
Aquaporina 4/antagonistas & inibidores , Asfixia/complicações , Edema Encefálico/prevenção & controle , Compostos de Flúor/uso terapêutico , Parada Cardíaca/fisiopatologia , Animais , Região CA1 Hipocampal/patologia , Clorofenóis , Modelos Animais de Doenças , Feminino , Compostos de Flúor/farmacologia , Parada Cardíaca/etiologia , Humanos , Masculino , Ratos , Ratos Sprague-Dawley , Resultado do Tratamento
16.
J Cereb Blood Flow Metab ; 39(5): 913-925, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-29192562

RESUMO

Decreased cerebral blood flow (CBF) after cardiac arrest (CA) contributes to secondary ischemic injury in infants and children. We previously reported cortical hypoperfusion with tissue hypoxia early in a pediatric rat model of asphyxial CA. In order to identify specific alterations as potential therapeutic targets to improve cortical hypoperfusion post-CA, we characterize the CBF alterations at the cortical microvascular level in vivo using multiphoton microscopy. We hypothesize that microvascular constriction and disturbances of capillary red blood cell (RBC) flow contribute to cortical hypoperfusion post-CA. After resuscitation from 9 min asphyxial CA, transient dilation of capillaries and venules at 5 min was followed by pial arteriolar constriction at 30 and 60 min (19.6 ± 1.3, 19.3 ± 1.2 µm at 30, 60 min vs. 22.0 ± 1.2 µm at baseline, p < 0.05). At the capillary level, microcirculatory disturbances were highly heterogeneous, with RBC stasis observed in 25.4% of capillaries at 30 min post-CA. Overall, the capillary plasma mean transit time was increased post-CA by 139.7 ± 51.5%, p < 0.05. In conclusion, pial arteriolar constriction, the no-reflow phenomenon and increased plasma transit time were observed post-CA. Our results detail the microvascular disturbances in a pediatric asphyxial CA model and provide a powerful platform for assessing specific vascular-targeted therapies.


Assuntos
Encéfalo/irrigação sanguínea , Circulação Cerebrovascular , Parada Cardíaca/complicações , Microcirculação , Fenômeno de não Refluxo/etiologia , Animais , Encéfalo/fisiopatologia , Parada Cardíaca/fisiopatologia , Masculino , Fenômeno de não Refluxo/fisiopatologia , Ratos Sprague-Dawley , Vasodilatação
17.
Pediatr Emerg Care ; 35(6): e104-e106, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28719483

RESUMO

A previously healthy 7-month-old male infant presented for evaluation of fever, deceased oral intake, and intermittent noisy breathing. Physical examination revealed neck tenderness. Soft tissue neck radiographs and computed tomography (CT) scan supported a diagnosis of retropharyngeal swelling with extension to the superior mediastinum. Surgical exploration was planned, and endotracheal intubation was performed in the operating room. Significant cardiorespiratory derangements developed immediately after the tracheal tube was inserted, including hypotension, hypoxia, and bradycardia with signs of cardiac ischemia. The patient was resuscitated with intravenous fluids, vasopressors, and bronchodilators; his condition improved after resuscitation and surgical evacuation of purulent material. A combination of mediastinal mass effect, aspiration, and bronchospasm likely contributed to the patient's deterioration. The subsequent clinical course was uneventful. The patient was extubated in a delayed fashion and discharged on the fourth postoperative day. This case highlights the importance of preparing for a difficult airway in cases of retropharyngeal abscesses that necessitate tracheal intubation. A multidisciplinary approach is best suited to manage the airway, preferably in the operating room.


Assuntos
Intubação Intratraqueal/instrumentação , Mediastino/patologia , Abscesso Retrofaríngeo/diagnóstico por imagem , Abscesso Retrofaríngeo/cirurgia , Reanimação Cardiopulmonar , Humanos , Lactente , Masculino , Mediastino/diagnóstico por imagem , Mediastino/cirurgia , Ventilação Pulmonar , Abscesso Retrofaríngeo/fisiopatologia , Tomografia Computadorizada por Raios X , Resultado do Tratamento
18.
Pediatr Emerg Care ; 34(2): e32-e34, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28816771

RESUMO

Primary omental torsion is a rare cause of acute abdominal pain with a clinical presentation resembling acute appendicitis. Here, we report the case of a 7-year-old child presenting with right lower quadrant pain. Primary omental torsion was discovered upon laparoscopy, and the torsed omentum was excised without postoperative complications. Potential causes, contributing factors, diagnosis, and treatment are discussed.


Assuntos
Laparoscopia/métodos , Omento/patologia , Doenças Peritoneais/diagnóstico , Anormalidade Torcional/diagnóstico , Dor Abdominal/etiologia , Apendicite/diagnóstico , Criança , Diagnóstico Diferencial , Humanos , Masculino , Omento/cirurgia , Doenças Peritoneais/cirurgia , Anormalidade Torcional/cirurgia
19.
Pediatr Emerg Care ; 34(12): e233-e235, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28816772

RESUMO

OBJECTIVE: Cerebral infarction due to minor head injury is rare. Mineralizing angiopathy is considered a predisposing factor for lenticulostriate stroke after minor closed head injury. This entity is characterized by infarction of the basal ganglia and most often occurs in young children, from infancy to 2 years of age. Symptoms usually occur immediately after the injury. METHODS AND RESULTS: We present the case of a previously healthy 2-year-old female child presenting with right facial hemiparesis and aphasia, along with right arm and leg weakness that occurred immediately after a fall from the couch onto a carpeted floor. A brain computed tomography scan revealed small and linear calcifications of the basal ganglia and subcortical frontoparietal area, in the absence of signs of intracranial hemorrhage. Brain magnetic resonance imaging with stroke protocol revealed restriction of water diffusion in the left basal ganglia on diffusion-weighted imaging sequences as well as apparent diffusion coefficient sequences, suggesting an acute infarct of the left basal ganglia within the distribution of the lenticulostriate vessels. The patient was treated with aspirin and conservative management and had gradual improvement over the next few days, with full recovery of the aphasia, facial nerve function, and arm and leg mobility, within 2 months. CONCLUSIONS: Some infants can present with the onset of stroke-like symptoms after minor head injuries. Presence of linear calcifications of the basal ganglia noticed on brain computed tomography in many of these patients suggests that mineralizing angiopathy may be a predisposing factor for lenticulostriate stroke after minor closed head injury in infants. Brain magnetic resonance imaging to further delineate possible cerebral infarction is indicated.


Assuntos
Doença Cerebrovascular dos Gânglios da Base/etiologia , Calcinose/complicações , Traumatismos Cranianos Fechados/complicações , Acidente Vascular Cerebral/etiologia , Acidentes por Quedas , Aspirina/uso terapêutico , Encéfalo/irrigação sanguínea , Encéfalo/patologia , Pré-Escolar , Tratamento Conservador/métodos , Feminino , Humanos , Imageamento por Ressonância Magnética , Inibidores da Agregação Plaquetária/uso terapêutico , Tomografia Computadorizada por Raios X
20.
Transl Stroke Res ; 9(3): 238-250, 2018 06.
Artigo em Inglês | MEDLINE | ID: mdl-28971348

RESUMO

Newly emerged evidence reveals that ischemic stroke and Alzheimer's disease (AD) share pathophysiological changes in brain tissue including hypoperfusion, oxidative stress, immune exhaustion, and inflammation. A mechanistic link between hypoperfusion and amyloid ß accumulation can lead to cell damage as well as to motor and cognitive deficits. This review will discuss decreased cerebral perfusion and other related pathophysiological changes common to both ischemic stroke and AD, such as vascular damages, cerebral blood flow alteration, abnormal expression of amyloid ß and tau proteins, as well as behavioral and cognitive deficits. Furthermore, this review highlights current treatment options and potential therapeutic targets that warrant further investigation.


Assuntos
Doença de Alzheimer , Peptídeos beta-Amiloides/metabolismo , Isquemia Encefálica , Circulação Cerebrovascular/fisiologia , Acidente Vascular Cerebral , Proteínas tau/metabolismo , Doença de Alzheimer/imunologia , Doença de Alzheimer/metabolismo , Doença de Alzheimer/fisiopatologia , Animais , Isquemia Encefálica/imunologia , Isquemia Encefálica/metabolismo , Isquemia Encefálica/fisiopatologia , Humanos , Acidente Vascular Cerebral/imunologia , Acidente Vascular Cerebral/metabolismo , Acidente Vascular Cerebral/fisiopatologia
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