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Vomiting is a complex physiological response to expel harmful or irritating substances from the body. It's a defensive mechanism triggered by stimuli like poisons, microbial toxins, cytotoxic drugs, and mechanical abdominal distension. The process is centrally coordinated by the vomiting (or emetic) center located in the medulla of the brainstem. This area, rich in muscarinic M1, histamine H1, neurokinin 1 (NK1), and serotonin 5-HT3 receptors, coordinates the act of vomiting through...
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5-HT3 receptor antagonists, such as dolasetron, granisetron (Kytril), ondansetron (Zofran), and palonosetron (Axoli), are crucial in managing chemotherapy-induced nausea and vomiting (CINV) and postoperative nausea. These drugs selectively block 5-HT3 receptors in the visceral vagal and spinal afferent nerves, chemoreceptor trigger zone, and the vomiting center. They have a rapid onset of action and can be given as a single dose before chemotherapy. Ondansetron and granisetron, in particular,...
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The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
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Pneumonia is an acute respiratory infection that targets the lungs, specifically the alveoli. These tiny air sacs, essential for oxygen exchange, become engorged with pus and fluid, severely hindering breathing, decreasing oxygen absorption, and causing significant pain and discomfort during respiration.
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EPA Method 1615. Measurement of Enterovirus and Norovirus Occurrence in Water by Culture and RT-qPCR. II. Total Culturable Virus Assay
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All Vomit Is Not Viral.

Annaliese Powell, Hannah Elizabeth Jones, Adina Alazraki

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    This summary is machine-generated.

    Duplication cysts are rare congenital gastrointestinal malformations. This case highlights a 7-year-old boy with persistent vomiting due to a bilobed duplication cyst, emphasizing their importance in differential diagnosis.

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    Area of Science:

    • Gastroenterology
    • Pediatric Surgery
    • Congenital Malformations

    Background:

    • Duplication cysts are rare congenital anomalies of the gastrointestinal tract, occurring in approximately 1 in 4,500 births.
    • While typically presenting by age 2, symptoms can manifest from infancy to adulthood.
    • Presentation varies widely and can mimic acute infectious gastroenteritis.

    Observation:

    • A 7-year-old boy presented with persistent bilious vomiting.
    • Diagnostic workup revealed a bilobed duplication cyst.

    Findings:

    • The case demonstrates a rare presentation of a bilobed duplication cyst in a pediatric patient.
    • The cyst caused significant obstructive symptoms leading to persistent bilious vomiting.

    Implications:

    • This case underscores the importance of considering duplication cysts in the differential diagnosis of vomiting children, especially when symptoms are persistent or atypical.
    • Early recognition and diagnosis are crucial for appropriate management and to prevent complications.
    • Further research into the varied presentations and optimal management strategies for gastrointestinal duplication cysts is warranted.