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</ iframe > </noscript> <!-- End Google Tag Manager (noscript) --><div id="header"> <div id="CClogo"><a href="https://www.cookchildrens.org"><span class="srText">Cook Children's</span></a></div> <div id="CCsearch"> <form id="searchform" name="searchform" method="GET" onsubmit="return (this.q.value == '') ? false : true;" action="/CookChildrens/en/parents/"> <input type="hidden" name="search" value="y"/> <input type="hidden" name="getfields" value="description"/> <input type="search" class="search" name="q" id="q" maxlength="256" autocomplete="off" autocorrect="off" placeholder="Search"/> <input type="hidden" name="datasource" value="cookchildrens"> <input type="hidden" name="start" value="0"> <input type="hidden" name="rows" value="10"> <input type="hidden" name="lang" value="english"> <input type="hidden" name="section" value="parents_teens_kids"> <input type="submit" value="" id="searchButton" class="buttonImage"/> </form> </div> </div> <!-- If we have main navigation separated then it will reside here --> <div id="thelou" tabindex="-1"> </div> <div id="mainContentContainer" class="kh-article-page"> <div id="rsSearchBrowse"> <div id="rsBrowse" role="navigation"> </div> <div id="rsSearch"> <div id="rsSectionLabel">parents</div> </div> </div> <div id="khContentHeading" class="ar licH"> <h1>Pulse Oximetry (Pulse Ox)</h1> </div> <div class="clearBox"> </div> <div id="khcontent"> <div id="xp1"> </div><br clear="all" style="width: 0; height: 0; line-height: 0; font-size: 0;"><div id="khcontent_article" lang="en-us"> <div id="NavigatePage1"> <div id="whichRead_1"><span class="ISI_MESSAGE"><!-- The following article is brought to you by CookChildrens. --></span><div class="rs_skip rs_skip_en rsbtn_kidshealth rs_preserve" id="readspeaker_button1"><script> var theRSURL = (escape(document.location.href)); var rsAudioTitle = document.title.replace(/ |\'|\?/g,"_"); var whichReadPage = 1; var doesItGotFlash = ''; makeTheRSLinkEN(); var readSpeakerDownloadLink = "//app-na.readspeaker.com/cgi-bin/rsent?customerid=5202&lang=en_us&voice=Kate&speed=100&readid=khcontent_article&url="+theRSURL+"&audiofilename=KidsHealth_"+rsAudioTitle+""; </script></div> <!--googleoff:all--> <div id="languagePairLink" class="rs_skip"><a href="/CookChildrens/es/parents/pulse-oximetry.html"><span class="pairedURLHead" lang="es">en español<img src="/images/n00/icons/langPairArrow.svg" alt=""></span><span class="pairedURLBody" lang="es">Pulsioximetría</span></a></div> <!--googleon:all--><div class="rte-image"><!--<sly data-sly-test.buttonBorder="khb-noborder"></sly> --><h3>What Is Pulse Oximetry?</h3><p>Pulse oximetry (often called <strong>pulse ox</strong>) is a painless test to measure how much oxygen is in the blood.</p><h3>Why Is Pulse Oximetry Done?</h3><p>Doctors may order pulse oximetry to see if there is enough oxygen in the blood. Oxygen levels may be low with lung infections, <a href="/CookChildrens/en/parents/asthma-basics.html">asthma</a>, heart problems, <a href="/CookChildrens/en/parents/anaphylaxis.html">allergic reactions</a>, after <a href="/CookChildrens/en/parents/anesthesia-basics.html">anesthesia</a>, and with other medical conditions.</p><h3>How Should We Prepare for Pulse Oximetry?</h3><p>If your child has nail polish on, it may need to be removed to allow the pulse ox to accurately measure the oxygen level.</p><h3>What Happens During Pulse Oximetry?</h3><p>During pulse oximetry, a small painless clip or bandage is put on a child's finger, toe, foot, or earlobe. This is called a sensor, and uses light to measure how much oxygen is in the blood.</p><p>Sometimes pulse ox is done once to get a single oxygen reading, and sometimes the sensor is left on for continuous monitoring of oxygen levels. If the sensor isn't put on well, it can affect the reading and make the oxygen level look lower than it actually is.</p><h3>Can I Stay With My Child During Pulse Oximetry?</h3><p>Parents can stay while their child wears the pulse ox sensor.</p><h3>How Long Does Pulse Oximetry Take?</h3><p>It usually takes a few seconds for the sensor to get the reading it needs. If your child is calm and staying still, it can help the pulse ox be more accurate.</p><h3>When Are the Results Ready?</h3><p>Pulse ox results are available immediately.</p><h3>Are There Any Risks From Pulse Oximetry?</h3><p>Pulse oximetry is a safe test. Occasionally, the sensor can cause skin irritation.</p><p>If you have questions about the pulse ox, speak with the doctor or another health professional on your child's care team.</p></div> <div id="reviewerBox"> <div id="reviewedBy">Medically reviewed by: Yamini Durani, MD</div> <div id="reviewedDate">Date reviewed: June 2023</div> </div><span class="ISI_MESSAGE"><!--Thank you for listening to this KidsHealth audio cast. The information you heard, is for educational purposes only. If you need medical advice, diagnoses, or treatment, consult your doctor. This audio cast is Copyrighted by KidsHealth. 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