A nurse is planning to administer diphenhydramine 1.25 mg\/kg IV to a school-age child who weighs 55 lb. Available is diphenhydramine 50 mg\/mL. How many ml should the nurse administer?<\/p>\n\n\n\n
The correct answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n To calculate the dose of diphenhydramine to be administered to a school-age child weighing 55 lb, we first need to convert the weight from pounds to kilograms, since the medication dosage is given in mg\/kg.<\/p>\n\n\n\n Step 1: Convert weight to kilograms.<\/strong><\/p>\n\n\n\n 1 kg is approximately 2.2 lb. Therefore, to convert the child’s weight:<\/p>\n\n\n\n [ Step 2: Calculate the required dose in mg.<\/strong><\/p>\n\n\n\n The prescribed dosage is 1.25 mg\/kg. We can find the total dose required for the child:<\/p>\n\n\n\n [ Step 3: Determine the volume of diphenhydramine to administer.<\/strong><\/p>\n\n\n\n Diphenhydramine is available in a concentration of 50 mg\/mL. To find out how many mL we need to administer 31.25 mg, we can use the following formula:<\/p>\n\n\n\n [ Plugging in the values:<\/p>\n\n\n\n [ Final Calculation:<\/strong><\/p>\n\n\n\n The nurse should administer 0.625 mL<\/strong> of diphenhydramine IV.<\/p>\n\n\n\n In pediatric medicine, accurate dosing is crucial for safety and efficacy. The weight-based dosing method, commonly used in children, helps ensure that each child receives an appropriate amount of medication based on their size.<\/p>\n\n\n\n Here, we converted the child\u2019s weight into kilograms, which is essential as most medications are dosed per kg of body weight. After calculating the required total dose of diphenhydramine, we used the concentration of the medication to determine the exact volume to administer. This systematic approach minimizes the risk of underdosing or overdosing, ensuring effective treatment while maintaining safety standards in pediatric care.<\/p>\n\n\n\n Always double-check calculations and consider factors such as the child\u2019s health status and any contraindications before administering medication.<\/p>\n","protected":false},"excerpt":{"rendered":" A nurse is planning to administer diphenhydramine 1.25 mg\/kg IV to a school-age child who weighs 55 lb. Available is diphenhydramine 50 mg\/mL. How many ml should the nurse administer? The correct answer and Explanation is : To calculate the dose of diphenhydramine to be administered to a school-age child weighing 55 lb, we first […]<\/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-142480","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/142480","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=142480"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/142480\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=142480"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=142480"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=142480"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\\text{Weight in kg} = \\frac{55 \\text{ lb}}{2.2 \\text{ lb\/kg}} \\approx 25 \\text{ kg}
]<\/p>\n\n\n\n
\\text{Total dose} = 1.25 \\text{ mg\/kg} \\times 25 \\text{ kg} = 31.25 \\text{ mg}
]<\/p>\n\n\n\n
\\text{Volume (mL)} = \\frac{\\text{Desired dose (mg)}}{\\text{Concentration (mg\/mL)}}
]<\/p>\n\n\n\n
\\text{Volume (mL)} = \\frac{31.25 \\text{ mg}}{50 \\text{ mg\/mL}} = 0.625 \\text{ mL}
]<\/p>\n\n\n\nExplanation<\/h3>\n\n\n\n