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A pulse oximetry test can give the saturation of oxygen in your blood by transmitting light through your tissues. It You may need to have your blood oxygen level tested prior to surgery or other medical procedures, or if you have certain conditions, such as: Sleep apnea A heart attack or congestive heart failure Chronic obstructive pulmonary disease (COPD) Anemia Lung cancer Asthma Pneumonia Cystic fibrosis A current or possible need for mechanical ventilation to support your breathing The pulse oximetry method of measuring blood oxygen level is non-invasive, so there is usually little you need to do to prepare for the test. However, your doctor will still discuss the test with you and answer any questions you may have. You may be asked to remove fingernail polish, if applicable. Your doctor may give you other specific instructions for preparation, based on your medical condition and history. There are very few risks associated with pulse oximetry. These are minimal, but include: Skin irritation at the application site. This may occur with prolonged or repeated application of the probe sensor. Inaccurate readings in cases of smoke or carbon monoxide inhalation. Your doctor can let you know if there are any additional risks, based on your specific medical condition. The sensor used to measure the oxygen level of blood by pulse oximetry is a clip-like device called a probe. The probe sensor contains a light source, a light detector, and a microprocessor. The light emitted from the source on one side of the clip passes through your skin and reaches the detector on the other side of the clip. The microprocessor does calculations based on the information received from the detector in order to calculate the oxygen level of your blood with a very small margin of error. Usually, a finger, ear, or nose is chosen as the site to attach the sensor. The sensor will then use light to measure the oxygen level of your blood. This method has the advantage of being painless and noninvasive, since no needles are involved. However, it is not as accurate as an arterial blood gas test, so in some cases, both tests may need to be performed. Your health professional cannot attach the sensor to an area with excessive movement or tremor, or with bruising. For example, if you have a dark bruise under your fingernail, your health professional may place the sensor on your ear instead. The sensor's microprocessor will compare the transmission of two wavelengths of light, red and infrared, as they pass through the relatively thin skin of your finger, ear or other site. Hemoglobin in your blood that has absorbed oxygen absorbs more infrared light, while hemoglobin lacking oxygen absorbs more red light. The sensor calculates the difference between these two values to provide information for deriving your blood oxygen level. If you are having your blood oxygen level measured for a one-time reading, then once the sensor has taken the necessary measurements and completed its calculations, the probe can be removed. In some cases (such as for certain congenital heart conditions), however, your doctor may require you to wear the probe for continuous monitoring. If you are asked to do this, remove the probe sensor only when your doctor tells you to. Most of the time, there are no special restrictions following the pulse oximetry test, and you can immediately return to normal activities. Depending on your individual medical condition, however, your doctor may give you special post-procedure instructions. Once your doctor has the results of your pulse oximetry test, he or she will review them with you. An oxygen saturation level of about 95% is described as normal. Your doctor will discuss the implications of your test results with you, including how certain factors may alter the results of the test, including: Decreased peripheral blood flow Light shining on the oximetry probe Movement of the test site area Anemia Abnormal warmth or coolness at the test site area Sweating at the test site area Recent injection of contrast dye Smoking tobacco

summary: Contact a health professional to receive a pulse oximetry test. Prepare for the procedure. Know the risks. Have your health professional prepare the sensor. Have your health professional attach the sensor to your body. Let the sensor perform a reading. Remove the probe. Follow post-procedure instructions. Interpret the results.

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A prototype is an early sample of your magazine that will help you shop around your magazine to potential advertisers. It will also show your printer exactly how you want your magazine to look. Put together the different pieces that go together best. Make sure the pictures and articles match each other in tone and content. Print your prototype using a local printing service. This is not the final copy of your magazine! After you visit advertisers, you will have to re-edit your magazine to include their ads, and you may make more changes during editing. Advertisers are the primary source of funding for magazines. It may be difficult to find advertisers for a new magazine, but you can want to ask local small businesses if they would like to buy ad space in your new magazine. Bring your prototype with you as you meet with advertisers so they can see what kind of magazine you have. On average, most magazines are 50-60% advertisements, but you can include as many or as few advertisements you want based on how profitable you want the magazine to be. More advertisements will give you more money, but it may turn off readers who want more articles. Fewer advertisements give readers more content, but it makes your profits more dependent on subscribers. You do not want more than 70% of your space taken up by advertisements. For a more professional looking magazine, you will want to work with a printer that specializes in magazines and periodicals. Many will have websites where you can upload your files. Local small scale printers may be able to do small runs while professional printers may have minimum print runs of 5,000 copies. You can contact magazines you enjoy to find their printers. Be aware that large magazines may hire more expensive printers. A local print shop may work for you if you want only a small run of about 100 copies or less. There are many different factors that determine the cost of printing. Before you print, you should consider what features you want your magazine to have. Ask potential printers for a quote for these features. These include: Will your magazine be in color or black and white? How many pages will it be? How many photographs and images are included? What kind of paper do you want it to be printed on?

summary: Assemble a prototype. Find advertisers. Contact printers. Calculate the costs.

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The Settings app looks like a gray gear icon on your iPhone's Home screen. This option is listed next to a blue cloud icon halfway through your Settings menu. It's written in red letters at the bottom of the iCloud menu. A pop-up confirmation box will appear at the bottom of your screen. It's written in red letters. Another pop-up box will appear. It's written in red letters. Signing out of your Apple ID will delete all your iCloud Notes from your device. Tapping on this option will confirm your action. Another pop-up box will appear again. Your Notes will still be available on iCloud. You can sign in again and sync your Notes anytime. Your Safari tabs, bookmarks, and history are synced across devices when you sign in with your Apple ID. You can choose to keep your synced Safari data on your device, or delete it. You have to turn off Find My iPhone in order to sign out of your Apple ID. If you have it on, you will be prompted to enter your Apple ID password to turn it off. This will turn off Find My iPhone on your device, and sign you out of your Apple ID.
summary: Open your iPhone's Settings. Scroll down and tap iCloud. Scroll down and tap Sign Out. Tap the Sign Out in the pop-up to confirm. Tap Delete from My iPhone/iPad. Select if you want to keep your Safari data. Enter your Apple ID password. Tap Turn Off in the pop-up box.