Q: Oxygen is breathed into the lungs. The oxygen then passes into the blood where the majority of the oxygen attaches to hemoglobin. Hemoglobin is a protein located inside our red blood cells that transports the oxygen through the bloodstream to the rest of our body and tissues. In this way, our body is given the oxygen and nutrients it needs to function. Pulse oximetry is used to assess oxygen saturation in the blood for a variety of reasons. It is often used in surgeries and other procedures that involve sedation (such as a bronchoscopy) and to make any adjustments of supplemental oxygen. A pulse oximeter may also be used to assess whether an adjustment of supplemental oxygen is needed, whether lung medications are working effectively, and to determine patient tolerance to increased activity levels. Your physician may also recommend pulse oximetry if you use a ventilator to support breathing, suffer from sleep apnea or have a serious medical condition, such as heart attack, congestive heart failure, chronic obstructive pulmonary disease (COPD), anemia, lung cancer, asthma, or pneumonia. Oximeters use the light absorptive characteristics of hemoglobin and the pulsating nature of blood flow in the arteries to measure the level of oxygen in the body. A device called a probe has a light source, light detector, and microprocessor, which compares and calculates the differences in oxygen-rich versus oxygen-poor hemoglobin. One side of the probe contains a light source with two different types of light: infrared and red. These two types of light are transmitted through the body's tissues to the light detector on the other side of the probe. Hemoglobin that is more saturated with oxygen absorbs more of the infrared light, while hemoglobin without oxygen absorbs more of the red light. The microprocessor in the probe calculates the differences and converts the information to a digital value. This value is then assessed to determine the amount of oxygen being carried in the blood. Measurements of relative light absorption are made multiple times every second. These measurements are then processed by the machine to give a new reading every 0.5-1 second. The readings of the last 3 seconds are then averaged out. In general, the risks associated with pulse oximetry are minimal. If using the oximeter for a prolonged time, you may experience tissue breakdown at the site where the probe is applied (e.g., finger, ear). Skin irritation can sometimes occur when using adhesive-containing probes. There may be other risks depending upon your medical health and any specific conditions you may have. Consult your doctor if you have any concerns before beginning the procedure. Several different types of pulse oximeters are available. The most popular are portable handheld and fingertip pulse oximeters. Portable pulse oximeters can be purchased from a wide array of stores, including drugstores like Walgreens and CVS, big-box stores like Walmart, and even online. Most pulse oximeters are clip-like and look like a clothespin. There are also adhesive probes that can be placed on your finger or forehead. Appropriately sized probes should be used for children and infants. Plug oximeter into grounded wall outlet if the unit is not portable. If the unit is portable, ensure sufficient battery charge by turning it on before using.
A: Understand the relationship between oxygen and the blood. Understand the reasons for the procedure. Understand how the pulse oximeter works. Know the risks of the procedure. Select the appropriate pulse oximeter that fits your needs. Make sure the oximeter is charged.

Q: Get out as many yams as you'd like to cook. Wash them thoroughly and dry them with a kitchen towel. Take a small knife and carefully poke the yams a few times. This will let steam escape as they cook. Try to find yams that are the same size so they cook evenly in the microwave. Keep in mind that you can probably only fit 3 or 4 yams in your microwave at a time. Place the prepared yams on a microwave-safe plate or bowl. Run a paper towel under some water and wring it out. Lay the damp paper towel over the yams and put the plate in the microwave. Set your microwave to high and microwave the yams for 5 minutes. If you're only cooking one yam, it should take only 5 minutes. If you're cooking several yams, you'll need about 5 minutes for each yam. Carefully lift away the paper towel and poke the yams with a fork to see how tender they are. If you're cooking more than one yam, turn the microwave on for another 5 minutes and then check them again. Keep microwaving the yams for a couple of minutes at a time until they're soft. If you're using several orange or yellow yams, it should take about 10 minutes total for them to cook. Purple yams will take longer and you might need to wet the paper towel again as the yams cook. Wear oven mitts to remove the plate of cooked yams from the microwave. Let the yams cool until they're cool enough to handle. Use your fingers to peel the yams. You can eat them with a little bit of butter and seasonings or slice them and use them in another recipe. You can refrigerate the cooked yams in an airtight container for several days.
A: Wash and poke the yams. Arrange the yams on a plate. Microwave the yams for 5 minutes. Check the yams and microwave them for 5 more minutes if needed. Peel and serve the cooked yams.

Q: If the accident happened in sight of pedestrians, a shop, or other drivers, ask them to stay on the scene until the police arrive so that they can provide statements. If possible, get their name and phone number. After the police officer has finished taking statements and completing the report, you should get the other driver's information. Make your information freely available as well; people might think you're at fault if you try to hide anything. The following information should be exchanged: Full name, address, contact information Driver's license numbers License plate number Insurance company and policy number Make, model and color of the vehicle Write down any information you receive from the police officer and the other driver. Take pictures of the scene with your phone. You'll want to get pictures of the location itself, including stop signs, traffic lights, and other elements you think might have played into the accident. The insurance company will ask many questions, and you can use these pictures as a reference. Make sure to get pictures of the damage to the vehicle as well.
A:
Look for witnesses. Exchange information with the other driver. Document the incident.