A nurse is preparing to administer a dose of lactulose to a client diagnosed with cirrhosis. The client states, “I don’t need this medication. I am not constipated.” The nurse should explain that in clients who have cirrhosis, lactulose is used to decrease levels of which of the following components in the bloodstream?<\/p>\n\n\n\n
A.
Potassium<\/p>\n\n\n\n
B.
Ammonia<\/p>\n\n\n\n
C.
Glucose<\/p>\n\n\n\n
D.
Bicarbonate<\/p>\n\n\n\n
The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n The correct answer is B. Ammonia<\/strong>.<\/p>\n\n\n\n Lactulose is a synthetic sugar used primarily to treat constipation, but in clients with liver conditions like cirrhosis, it serves a critical additional function. In these patients, lactulose helps to decrease the levels of ammonia in the bloodstream. Here\u2019s why:<\/p>\n\n\n\n Pathophysiology in Cirrhosis and Ammonia Build-Up<\/strong><\/p>\n\n\n\n Cirrhosis is a chronic liver disease characterized by the progressive replacement of liver tissue with fibrous scar tissue, which impairs liver function. One of the liver’s essential roles is the detoxification of metabolic waste products, including ammonia. Ammonia is a byproduct of protein metabolism and is usually converted into urea by the liver, which is then excreted in the urine.<\/p>\n\n\n\n However, in cirrhosis, the liver\u2019s ability to perform this detoxification process is compromised due to the extensive scarring. As a result, ammonia accumulates in the bloodstream, leading to hyperammonemia. Elevated levels of ammonia can be toxic and contribute to hepatic encephalopathy, a condition characterized by altered mental status, confusion, and, in severe cases, coma.<\/p>\n\n\n\n Mechanism of Action of Lactulose<\/strong><\/p>\n\n\n\n Lactulose acts as an osmotic laxative. When administered, it is not absorbed by the intestines but instead passes into the colon. In the colon, lactulose is metabolized by colonic bacteria into lactic acid and other acids. These acids acidify the colonic contents, converting ammonia into ammonium ions (NH4+). The ammonium ions are less readily absorbed through the intestinal wall compared to ammonia (NH3). Thus, lactulose reduces the amount of ammonia that enters the bloodstream by promoting its excretion through the feces.<\/p>\n\n\n\n Clinical Implications<\/strong><\/p>\n\n\n\n For clients with cirrhosis, the primary goal of lactulose therapy is to manage and prevent hepatic encephalopathy by lowering blood ammonia levels, even if the client does not present with constipation. Educating the client on this aspect is crucial, as it highlights the medication\u2019s role beyond just alleviating constipation and emphasizes its importance in managing their liver condition.<\/p>\n\n\n\n In summary, lactulose is administered to clients with cirrhosis not only to treat constipation but also to decrease elevated ammonia levels, helping to prevent or manage hepatic encephalopathy<\/p>\n","protected":false},"excerpt":{"rendered":" A nurse is preparing to administer a dose of lactulose to a client diagnosed with cirrhosis. The client states, “I don’t need this medication. I am not constipated.” The nurse should explain that in clients who have cirrhosis, lactulose is used to decrease levels of which of the following components in the bloodstream? A.Potassium B.Ammonia […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-137216","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/137216","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=137216"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/137216\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=137216"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=137216"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=137216"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}