Traumatic brain injury (TBI) causes two injury types: primary and secondary. In infants and young children, nonaccidental TBI is an important etiology of brain injury and is commonly a repetitive insult. TBI is by far the most common cause of acquired brain injury (ABI) in children and is the most common cause of death in cases of childhood injury. In 2009, the Pediatric Emergency Care Applied Research Network (PECARN) issued validated prediction rules to identify children at very low risk of clinically important TBI, which is defined as TBI requiring neurosurgical intervention or leading to death. The range of outcomes in pediatric TBI is very broad, from full recovery to severe physical and/or intellectual disabilities. Children and adolescents who have suffered a TBI are at increased risk of social dysfunction. Studies show that these patients can have poor self-esteem, loneliness, maladjustment, reduced emotional control, and aggressive or antisocial behavior.

This chapter includes information related to the clinical evaluation of a concussion that a child might receive in a medical setting. It discusses guidelines for appropriate use of smartphone concussion evaluation apps. This chapter examines a brief section on the future of concussion assessment. The Acute Concussion Evaluation (ACE) can help the school concussion team obtain information regarding the injury, including the cause, severity, any amnesia, loss of consciousness (LOC), and any early signs. The computerized neurocognitive assessment typically measures player symptoms, verbal/visual memory, attention span, working memory, processing speed, response variability, nonverbal problem solving, and reaction time. Neurocognitive tests, sideline assessments, and smartphone apps can help district staff and parents determine the severity of a student’s symptoms. A neuropsychological assessment to assess cognitive functioning, memory, speed, and processing time may also be administered.

In the postpartum period, secondary postpartum hemorrhage (SPPH) and endometritis are two conditions that frequently present to an obstetric triage unit. These complications may coexist and can occur from 24 hours postpartum to 6 weeks postdelivery. SPPH is typically not as severe as a primary bleeding episode. Postpartum women ultimately diagnosed with endometritis are generally stable, but less commonly can present in septic shock. This chapter discusses presenting symptomatology, history and data collection, physical examination, laboratory and imaging studies, differential diagnosis, and clinical management and follow-up of secondary postpartum hemorrhage and postpartum endometritis. Prompt treatment of both SPPH and postpartum endometritis can reduce maternal morbidity and mortality. SPPH is managed with the same guiding principles as primary postpartum hemorrhage. Initial treatment for postpartum endometritis is intravenous clindamycin and gentamicin.

Pregnant women presenting with abdominal pain to an emergency department or obstetric triage setting frequently have a diagnostic ultrasound (US) to assess fetus, placenta, and adnexae. In the first trimester, symptomatic adnexal masses typically present with unilateral or bilateral pelvic cramping or pressure. Obtaining a history in a pregnant woman with abdominal pain is similar to doing so for the nonpregnant patient. In addition to routine cardiopulmonary examination, abdominal examination, and assessment for costovertebral angle tenderness, a sterile speculum and vaginal examination are performed to evaluate for adnexal or uterine tenderness, cervical dilation, and potential rupture of membranes. If a mass is suspected, US is the preferred imaging modality. Magnetic resonance imaging can be employed if additional imaging is needed. Differential diagnosis of abdominal pain in pregnant women must include other obstetric and nonobstetric causes of pain. This chapter describes clinical management and follow-up of pregnant women with adnexal masses.

Maternal sepsis is a common pregnancy-related condition; in the United States, it is a leading cause of maternal mortality, accounting for up to 28” of maternal deaths and up to 15” of maternal admissions to the intensive care unit. One contributing and modifiable factor to these deaths is failure to recognize sepsis, leading to delays in treatment. Therefore, rapid and accurate diagnosis and initial management of sepsis in pregnancy in the emergency department (ED) is paramount. Pregnancy poses a unique challenge given the baseline physiologic changes and the need to care for the mother while simultaneously caring for the fetus. Therefore, without clear pregnancy-specific data, recommendations are to follow the current guidelines for nonpregnant adults, yet be cognizant of the ways in which pregnancy may change maternal physiology and affect fetal well-being. Prompt identification and treatment of maternal sepsis will undoubtedly lead to the best possible maternal and neonatal outcomes.

Intimate partner violence (IPV) and sexual assault are common violent crimes perpetrated on women. Obstetric (OB) complications associated with trauma include miscarriage, preterm labor, and placental abruption. Ongoing mental health issues, including depression and anxiety, are more prevalent in pregnant women subjected to any form of IPV, whether or not direct physical violence is involved. One study showed that pregnant women subjected to verbal threats were twice as likely to deliver low-birth-weight infants. All women who present to an OB triage unit or an emergency department (not just those who present with an injury or complication) must be screened for IPV. An organized plan for providing the victim with resources must be readily available when a screen is positive. This chapter discusses presenting symptomatology, history and data collection, physical examination, laboratory and imaging studies, differential diagnosis, clinical management and follow-up care of IPV and sexual assault.

This chapter focuses on an area that has been at the center of the debate between the approaches: processing ambiguous words and sentences. Interestingly, an important factor for ambiguity resolution appears to be the frequency of the different meanings of the ambiguous words. Subordinate- bias effect is as follows: in a neutral, nonbiasing context, words that are balanced cause longer reading times than words that are either unbalanced or unambiguous. Different languages impose different rules about how grammatical categories may be combined. In the garden path model, sentence processing happens in two stages: an initial structure building stage in which the only information that is used is syntactic, and then a second stage in which the structure is checked against semantic and pragmatic information. Constraint-based models take a very different approach to how sentences are initially parsed and how mistakes are sometimes made.

Delirium, also known as acute confusional state, organic brain syndrome, brain failure, and encephalopathy, is a common occurrence among medical and surgical patients and causes extensive morbidity and mortality. This chapter provides an updated review of delirium, including pathophysiological correlates, clinical features, diagnostic considerations, and contemporary treatment options. The defining features of delirium include an acute change in mental status characterized by altered consciousness, cognition, and fluctuations. The chapter explores the risk factors for delirium. These can be divided into two categories: predisposing factors and precipitating factors. Imbalances in the synthesis, release, and degradation in gamma-aminobutyric acid (GABA), glutamate, acetylcholine, and the monoamines have also been hypothesized to have roles in delirium. GABA is the primary inhibitory neurotransmitter in the central nervous system (CNS) and medications such as benzodiazepines and propofol have known actions at GABA receptors and have been associated with delirium.

The researchers were specifically interested in whether they would get more incorrect responses depending on the type of sentence. From a certain perspective, passive sentences are more complicated than active sentences and so perhaps it is the case that passives are more difficult simply because they are more complicated. It appears that the important difference between subject cleft and actives on one hand, and passives on the other, is that the order of the roles is reversed between them: in active sentences, the agent comes first. Indeed, there is a growing body of evidence that languages allow English speakers to structure their utterances in a way that can flag certain parts of the sentence as particularly important or worthy of special attention. Recently, psycholinguists have been interested, too, in how information structure influences language processing.