{"id":7259,"date":"2025-07-21T12:01:07","date_gmt":"2025-07-21T20:01:07","guid":{"rendered":"https:\/\/www.osmosis.org\/blog\/?p=7259"},"modified":"2025-10-02T13:08:03","modified_gmt":"2025-10-02T21:08:03","slug":"dosage-calculation-hydroxyurea","status":"publish","type":"post","link":"https:\/\/www.osmosis.org\/blog\/dosage-calculation-hydroxyurea","title":{"rendered":"Dosage Calculation: Hydroxyurea"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_80 ez-toc-wrap-center counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">In This Article<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.osmosis.org\/blog\/dosage-calculation-hydroxyurea\/#Want_to_learn_more_about_this_topic\" >Want to learn more about this topic?<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.osmosis.org\/blog\/dosage-calculation-hydroxyurea\/#Key_Takeaways\" >Key Takeaways<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\"><em><strong>Accurate dosing is key in oncology nursing. How many tablets should be given to this patient? Do you know the answer? Let&#8217;s find out!<\/strong><\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The oncology nurse is caring for a patient diagnosed with chronic myelocytic leukemia (CML) prescribed hydroxyurea 15 mg\/kg\/day. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The medication is available in 400 mg tablets. The patient has lost a significant amount of weight since their initial diagnosis. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The nurse notes that the patient\u2019s prescription from six months ago was 1800 mg per day. The patient\u2019s current weight from the visit today is 176 lbs. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>How many tablet(s) should the nurse administer based on the patient\u2019s <em>current weight<\/em>? <\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Round to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero. <\/li>\n\n\n\n<li>Any rounding should be completed at the end of the calculation. <\/li>\n\n\n\n<li>The answer must be numeric only. Do not add any units of measurement.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center wp-block-paragraph\"><em><strong>Scroll down for the answer!<\/strong><\/em><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" height=\"1024\" width=\"1024\" src=\"https:\/\/www.osmosis.org\/blog\/wp-content\/uploads\/sites\/2\/2025\/07\/Hydroxyurea_Answer.png?w=1024\" alt=\"DOSAGE CALCULATION\nRx\nx = Desired x Quantity\/Have x Weight\nx = 15 mg x 1 tablet\/400 mg x 80 kg\nx= 3 tablets\" class=\"wp-image-7262\" srcset=\"https:\/\/www.osmosis.org\/blog\/wp-content\/uploads\/sites\/2\/2025\/07\/Hydroxyurea_Answer.png 1080w, https:\/\/www.osmosis.org\/blog\/wp-content\/uploads\/sites\/2\/2025\/07\/Hydroxyurea_Answer.png?resize=150,150 150w, https:\/\/www.osmosis.org\/blog\/wp-content\/uploads\/sites\/2\/2025\/07\/Hydroxyurea_Answer.png?resize=300,300 300w, https:\/\/www.osmosis.org\/blog\/wp-content\/uploads\/sites\/2\/2025\/07\/Hydroxyurea_Answer.png?resize=768,768 768w, https:\/\/www.osmosis.org\/blog\/wp-content\/uploads\/sites\/2\/2025\/07\/Hydroxyurea_Answer.png?resize=1024,1024 1024w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Want_to_learn_more_about_this_topic\"><\/span>Want to learn more about this topic? <span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Watch the Osmosis video: <\/strong><a href=\"https:\/\/www.osmosis.org\/learn\/Antihyperlipidemics_-_Miscellaneous:_Nursing_Pharmacology\"><strong>Antimetabolites: Nursing pharmacology<\/strong><\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Key_Takeaways\"><\/span>Key Takeaways<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Dosing in oncology is often weight-based for accuracy.<\/li>\n\n\n\n<li>Patient weight changes require recalculating medication doses.<\/li>\n\n\n\n<li>Medication rounding should happen at the end of calculations.<\/li>\n\n\n\n<li>Hydroxyurea tablets come in fixed strengths for dosing flexibility.<\/li>\n\n\n\n<li>Precise dosing helps ensure safe and effective cancer treatment.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"https:\/\/www.osmosis.org\/plans\/rn\"><img loading=\"lazy\" decoding=\"async\" width=\"700\" height=\"250\" src=\"https:\/\/hm-healthdigital-multisite.go-vip.net\/osmosisblog\/wp-content\/uploads\/sites\/2\/2025\/01\/Blog_Display_Ads_RN1_2023_535910.png\" alt=\"\" class=\"wp-image-5083\" srcset=\"https:\/\/www.osmosis.org\/blog\/wp-content\/uploads\/sites\/2\/2025\/01\/Blog_Display_Ads_RN1_2023_535910.png 700w, https:\/\/www.osmosis.org\/blog\/wp-content\/uploads\/sites\/2\/2025\/01\/Blog_Display_Ads_RN1_2023_535910.png?resize=300,107 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/a><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>Access your&nbsp;<a href=\"https:\/\/www.osmosis.org\/login?type=create\" target=\"_blank\" rel=\"noreferrer noopener\">free trial<\/a>&nbsp;to Osmosis today and discover why millions of nurses love learning with us<\/em><\/strong>!<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Practice calculating the correct hydroxyurea dose for a CML patient based on weight changes. Can you determine how many tablets to administer?<\/p>\n","protected":false},"author":207,"featured_media":7261,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[20,29,32],"tags":[1260,1261,1262,1266,1265,1264,998,815,1263,379],"class_list":["post-7259","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-exam-prep","category-nclex","category-nursing","tag-chemotherapy-dosing","tag-cml-treatment","tag-dosage-math","tag-dosing-calculation","tag-hydroxyurea","tag-medication-dosing","tag-nurse-education","tag-nursing-pharmacology","tag-oncology-nursing","tag-weight-based-dosing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Dosage Calculation: Hydroxyurea - Osmosis Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.osmosis.org\/blog\/dosage-calculation-hydroxyurea\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dosage Calculation: Hydroxyurea - Osmosis Blog\" \/>\n<meta property=\"og:description\" content=\"Practice calculating the correct hydroxyurea dose for a CML patient based on weight changes. 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