Pathophysiology Models of Irritable Bowel Disorder Essay

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Question Describe the pathophysiology of DKA (Diabetic Ketoacidosis) and HHNS (Hyperglycemic Hyperosmolar non-Ketotic Syndrome)DKA is a diabetes-related complication that disproportionately affects patients with Type 1 diabetes (Elendu et al., 2023). It is characterized by absolute or relative deficiency in insulin and a surge in hormones that trigger insulin resistance, such as catecholamines, growth hormone, and glucagon, leading to electrolyte imbalance, ketosis, dehydration, and hyperglycemia (Elendu et al., 2023). The precipitating event of DKA is often insulin deficiency resulting from infections, improper insulin administration, or missed doses, which inhibits the intracellular transportation of glucose (Elendu et al., 2023). This triggers intracellular starvation and hunger as cells lack sufficient glucose for energy generation. As a result, cells begin to use free fatty acids (FFA) to generate energy. The low levels of insulin limit effective adipocytes lipolysis, leading to increased concentrations of FFA in the bloodstream, which are then transported to the mitochondria in the liver for oxidation, leading to the formation of ketone bodies (Elendu et al., 2023). Since insulin levels are not sufficient to effectively regulate biochemical processes, ketone bodies are produced in excessive amounts, overwhelming the body and leading to ketosis (Elendu et al., 2023).In the second pathophysiology model, insulin deficiency may trigger the release of cortisol, catecholamine, glucagon, and growth hormone. These lead to accelerated glycogenolysis and increased gluconeogenesis, both of which increase hepatic production of glucose, and decreased uptake by tissues, triggering hyperglycemia (Elendu et al., 2023).

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If not accompanied by adequate fluid intake, hyperglycemia leads to electrolyte loss, hyperosmolarity, dehydration, and reduced glomerular filtration (reduced renal action). Reduced renal action worsens hyperosmolarity, diminishing intracellular potassium utilization and causing high potassium deficiency (Elendu et al., 2023), which is why DKA patients present with low serum potassium concentrations.The pathophysiology of HHS is similar to that of DKA, with only mild differences. As with DKA, HHS is precipitated by insulin deficiency that decreases intercellular glucose utilization, leading to hyperglycemia…

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…(Chong et al., 2019). Alterations in gut microbiota alter the gut’s immunity and integrity, leading to IBS pathogenesis (Chong et al., 2019).Another pathophysiology model involves changes in gut motility as a result of changes in the structure of gut microbiota. The vagus nerve links the gut to the brain via the gut-brain axis. Altered gut microbiota affect the signals that the gut sends out to the brain, leading to alterations in immune function, microbial balance, nutrient delivery, motility, and secretions (Tang et al., 2021). Ultimately, these alterations lead to IBS symptoms (Tang et al., 2021)......

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