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HOW TO DETERMINE PCV (PACKED CELL VOLUME)

The Packed Cell Volume (PCV) Test 1. Objective: This is one of the oldest tests done in medical practice. The objective of this test was to determine the percentage of red blood cells (RBCs) in whole blood. It  also helped to assess the blood’s capacity to carry oxygen. ________________________________________ 2. Principle: The test was based on the principle that when blood was centrifuged, the red blood cells settled at the bottom of the tube, forming a packed column. The ratio of the packed RBC column to the total blood column gave the packed cell volume (PCV), expressed as a percentage. ________________________________________ 3. Materials: • Microhematocrit capillary tubes • Microhematocrit centrifuge • Plasticine or sealing clay • Microhematocrit reader • Lancet • Alcohol swab • Cotton ________________________________________ 4. Procedure (Microhematocrit Method): 1. The fingertip was cleaned with an alcohol swab and pricked with a sterile lancet. 2. Blood was collected into ...
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THINGS YOU SHOULD KNOW ABOUT USING A CONDOM

THINGS YOU SHOULD KNOW ABOUT USING A CONDOM



You should be aware of these dos and don'ts on how to use a condom during sex.


1.Hold the condom tip between your finger and thumb to ensure it's on correctly and there's no air trapped inside (the condom may split if the air is trapped inside). Put the condom over your penis. Roll the condom down the length of your erect penis while squeezing the tip of the condom.


2.You should be aware that when putting on a condom, it is critical to squeeze the tip to remove any air. Otherwise, the condom will likely break.


3.It is a good idea to use lubricant, but make sure it is water-based (such as K.Y. Jelly or Durex Play). Other products, particularly those that aren't intended for sex, such as Vaseline, are often oil-based and can eat into condoms, causing them to break.


4.It is critical to use the correct sized condom. Too big and it will slip off, too small and it will tear. Condoms come in a variety of sizes, so you should be able to find one that fits you or your partner.


5.If you are transitioning from anal to vaginal sex or vice versa, you should use a new condom. Infection can result from introducing bacteria from the rectum into the vagina.


6.Finally, all condoms have an expiry date printed on the wrapper. If the expiration date has passed, the condom is no longer effective and will not provide protection.


©️ PUBLIC HEALTH ORBITAL

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