what sites should be avoided when performing venipuncture quizlet

1. How To Draw Blood | A Step-by-Step Guide - Nurse.org diet, exercise, stress, basal state). The blood is bright red (arterial) rather than venous. Hematoma - may cause erroneous test results. hemorrhage or hematoma at site of puncture, remove tourniquet An outpatient must provide identification other than the verbal statement of a name. Sites to avoid: Extensive scarring from burns or surgery The upper extremity on the side that a mastectomy was performed. Some DNS services support web filtering, too. Potential source of test error, particularly from hemolysis, Most lines are flushed with a solution of heparin to reduce the risk of thrombosis, Discard a sample at least three times the volume of the line before a specimen is obtained for analysis. Veins sometimes roll away from the point of the needle and puncture site. Serum iron levels tend to drop during the day. It is not as close to the skin surface as the median cubital and cephalic veins, which poses a greater risk of damage to the median nerve and brachial artery. If it is then heated, what can you say about: b) how often the molecules hit the walls of the can. 7. Procedure for Capillary Puncture of the Finger: The best site for a finger puncture is just off the center of the finger pad of, the 3rd (middle) or 4th (ring) finger of the hand. This is more common in humeral and femoral punctures than radial punctures. 5. However, blood samples that are normally taken are actually very small. Most reference ranges are based on normal laboratory test values for: Healthy people in a basal state. Follow the same procedure as for performing a finger, Order of Draw for a Capillary Puncture: Proper collection of tubes when. Concentrations of fluids and medications could affect baseline test results. The area where the blood is to be drawn from is first cleaned with a germ-killing solution. Lightly touch the microtainer capillary collection device (or filter paper) to the LARGE drop of blood. Document that the venipuncture was performed distal to (below) an infusion site. You should always contact your doctor or other qualified healthcare professional before starting, changing, or stopping any kind of health treatment. Hematoma - A venipuncture should not be performed on a hematoma, regardless of how small it may be. Assess the patient's physical disposition (i.e. If using a needle and syringe, avoid drawing the plunger back too forcefully. (b) How would you prepare tetracaine from p-nitrobenzoic acid? Describe and perform the venipuncture process including: Appropriate clothing and protective equipment. An example of a simple requisition form with the essential elements is shown below: A properly labeled sample is essential so that the results of the test match the patient. The sides and the tip of the. the 3 rd (middle) or 4 th (ring) finger of the hand. What are the complications that can occur when performing a venipuncture? When finished, clean the site and apply pressure with a clean gauze to stop the bleeding. Hematoma - may cause erroneous test results. d.appendChild(f); Avoid bruising the infants heel when obtainingblood. Collect drops of blood into the collectiondevice by gently massaging the finger. Extensive scarring or healed burn areas should be avoided Specimens should not be obtained from the arm on the same side as a mastectomy. 2006;52(5-6):217-30. C. After all specimens have been collected INR for patients on warfarin) are often knowledgeable on the veins that are most likely to work. 1. Venipuncture Quiz Flashcards | Quizlet In general, blood should not be drawn from an arm with a fistula or cannula without consulting the attending physician. A lab coat or gown must be worn during blood collection procedures. The patient should make a fist without pumping the hand. Located in the antecubital fossa, the median cubital vein is a well anchored, stable vein that rarely rolls during venipuncture. PDF Selecting The Venipuncture Site - Yola This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. The line must be flushed first. Lippi G, Blanckaert N, Bonini P, Green S, Kitchen S, Palicka V, Vassault AJ, Mattiuzzi C, Plebani M. Causes, consequences, detection, and prevention of identification errors in laboratory diagnostics. The infograph below provides a detailed description of the venipuncture steps as found in our how to draw blood resource. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Apply firm pressure. After the third attempt, further medical directions must be sought with the attending physician before proceeding. Cannula/fistula/heparin lock - hospitals have special policies regarding these devices. Warning: Make sure you are confident that the structure you're palpitating is indeed a vein. C. the needle has penetrated all the way through the vein If multiple blood samples are to be taken, the phlebotomist must be careful to follow the proper order of draw. It brings the entire family When would you use a butterfly/infustion set? Recognize complications associated with the phlebotomy procedure. The first attempt is the antecubital fossa area, starting with the median cubital vein, then the cephalic vein, and the basilic vein. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Other draw sites, particularly below the waist, are rarely used. Laboratory coats or work smocks are not typically needed as personal protective equipment during routine venipuncture, but an employer must assess the workplace to determine whether certain tasks, workplace situations, or employee skill levels may result in an employee's need for laboratory coats or other personal protective equipment to prevent contact with blood. Interruptions and distractions during medical encounters and procedures should be avoided. Please enable JavaScript on your browser and try again. X=[Ar]4s23d5Y=[Ar]4s23d104p1Z=[Ar]4s23d104p6. PhlebotomyU offers Certified Phlebotomy Technician (CPT I) courses for aspiring phlebotomists. www.mlo-online.com is using a security service for protection against online attacks. Cap, rotate and invert the microtainer to mix the blood collected. very small or difficult vein, Ch 46 Phlebotomy & Ch 47 Hematology (MULTIPLE, Chapter 47: Phlebotomy and Blood Collection, Positive and negative feedback & examples, Meds Vanessa doesn't need because she sleeps, Medical Terminology: Learning Through Practice, April Lynch, Jerome Kotecki, Karen Vail-Smith, Laura Bonazzoli. doi: 10.1002/14651858.CD005179.pub3. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. The equipment used during the venipuncture test can vary, but the following are most commonly used for routine venipuncture: Phlebotomists may choose to draw blood from several different sites of the body. All other items used for the procedure must be disposed of according to properbiohazardous waste disposal policy. Never draw from a thrombosed or scarred vein. This is very painful, risks damage to underlying structures, and widens the needle hole to prolong bleeding time. Finger - Usually the third or fourth finger is preferred in adults and children. Warm the heel from which blood is to be obtained. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Palpate and trace the path of veins with the index finger. C. Red After assembling the appropriate equipment, follow the next steps to perform a proper venipuncture. Collect the drops of blood into the collection device by gently massaging, Avoid excessive pressure that may squeeze tissue fluid into the drop of, When full, cap and then gently invert the collection device 5-10 times to, Hold a gauze pad over the puncture site for a short time to stop the, Dispose of the contaminated materials and lancet in the appropriate waste, Place a band-aid on the patients finger or have someone continue to hold, gauze on the finger. Stop the procedure if a hematoma occurs. Wait 2 minutes before reapplying the tourniquet. If the tech is not comfortable with any of the veins in the inside elbow area, they may choose a dorsal vein in the hand or, as a last resort, choose a vein in the foot. 6. Diurnal Rhythms: Diurnal rhythms are body fluid and analyte fluctuations during the day. Allow filter paper to air dry for two (2) hours at room temperature. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Proper patient identification procedures. -obvious skin infection (including newly tattooed areas). This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. The antecubital fossa is a collection of veins located within the arms inner area, opposite of the elbow, where the arm folds in. Pediatric Pointers. Center for Phlebotomy Education, Inc. Ernst, Dennis J. and Catherine Ernst. Adjust the height and swivel the chair to ensure your body is in line with the vein. Blood is commonly obtained from the median cubital vein on the anterior forearm. Diurnal variations associated with some blood components are: Asking the patient about their previous blood draw experiences is beneficial, especially if they are a hard stick and know which area works best. A. Edema DOC Blood Collection by Venipuncture - Michigan Avoid previous hematoma (draw distal of hematoma) A scooping motion to collect blood and strong repetitive pressure (milking) MUST be avoided, as both procedures may result in hemolysis or tissue-fluid contamination fo the specimen. Drawing blood for laboratory analysis is most often a routine and uneventful procedure. ; worn to protect the patient and the phlebotomist. ACDA or ACDB (pale yellow top). Follow institution's guidelines regarding treatment and follow-up. This complication of peripheral I.V. These items include: Look for visual clues which may help assess the patient's condition. D. all of the above, Common causes of hematomas that form during a venipuncture include: The performance of routine vascular access procedures by skilled phlebotomists requires, at a minimum, the use of gloves to prevent contact with blood. A thin soap bubble of index of refraction 1.33 is viewed with light of wavelength 550.0 nm and appears very bright. Allow the blood to soak through and completely fill the pre-printed circle on the filter paper. Check the requisition form for requested tests, patient information, and any special requirements. 2004;24(4):979-96, vii. var zf_ifrm_ht_nw = ( parseInt(zf_ifrm_data[1], 10) + 15 ) + "px"; Venipuncture requires good skills in order to perform the procedure not only correctly, but also painlessly. While we are ranked among the best children's hospitals in the country, it's our compassionate approach to treatment that makes us truly exceptional. The hydrostatic pressure causes some water and filterable elements to leave the extracellular space. Wipe away the first drop of blood, which tends to contain excess tissue fluid. jugular) or a central venous catheter is out of the scope of practice of a certified phlebotomist and should only be performed by a physician or advanced nurse. Transferring a sample from one collection tube to another or mixing blood from different collection tubes must be avoided. remove needle After the needle selection, phlebotomists begin to look and feel for a viable vein. The patient who is at ease will be less focused on the procedure. Wipe away the first drop of blood with sterile 22 gauze. var iframe = document.getElementById("zf_div_SBGg-3DTNCwt65i9A6n_zU3SneyGD89SSqM_7F_nCas").getElementsByTagName("iframe")[0]; The needle should form a 15 to 30 degree angle with the surface of the arm. Smaller collection tubes for sample sizes of 2 mL or less may be appropriate in situations where a smaller amount blood should be drawn, as in pediatric patients, or to minimize hemolysis during collection, or to avoid insufficient sample volume in the collection tube. antecubital fossa What are the best veins for venipuncture? Blood clots, and the serum is separated by centrifugation, Chemistries, Immunology and Serology, Blood Bank (Crossmatch), Serum separator tube (SST) contains a gel at the bottom to separate blood from serum on centrifugation, Plasma Separating Tube (PST) with Lithium heparin, Anticoagulates with lithium heparin; Plasma is separated with PST gel at the bottom of the tube, Hematology (CBC) and Blood Bank (Crossmatch); requires. C. placed in the sharps container Phlebotomy is the practice of drawing blood from patients to gather data about their health. D. 70% isopropyl alcohol. To prevent hemolysis (which can interfere with many tests): Mix tubes with anticoagulant additives gently 4-6 times, Avoid drawing the plunger back too forcefully, if using a needle and syringe, or too small a needle, and avoid frothing of the sample. Clin Chem Lab Med. C. Lancet What two things should you make sure you discuss with your patients prior to venipuncture? Butterflies are incredibly valuable tools for tackling difficult draws, owing to their precision, shorter shaft length, and maneuverability. 9. Many drugs will have "peak" and "trough" levels that vary according to dosage levels and intervals. var zf_ifrm_data = evntData.split("|"); In this elbow pit, phlebotomists have easy access to the top three vein sites used in phlebotomy: The median cubital vein, also known as the antecubital vein, is the most common vein for phlebotomy. Avoid drawing blood from a hematoma; select another draw site. A test that has been ordered may be cancelled due to problems unrelated to drawing the specimen, and these are the most common causes for cancellations: A test may be cancelled due to a technical problem in the specimen collection process: Identification of the specimen is suspect. Guidelines established by the Clinical and Laboratory Standards Institute (CLSI) dictate that a phlebotomist shall not attempt a venipuncture more than two times, and a maximum of three attempts shall be undertaken on a patient. Hemoconcentration: An increased concentration of larger molecules and formed elements in the blood may be due to several factors: Prolonged tourniquet application (no more than 1 minute). Change your approach when dealing with uncooperative patients, such as pediatrics and those with neurodevelopmental or psychiatric disorders. Using a sterile lancet, puncture the most medial or lateral portion of the plantar surface of theheel, medial to a line drawn posteriorly from the mid great toe to the heel. D. Both A and B, A sharps container is identified by its bright ____ color *NEVER BEND THE ARM*. The needle may have pulled out of the vein when switching tubes. 6. Basilic vein. To request course information, contact PhlebotomyU today. Examples of labeled collection tubes are shown below: THE FOLLOWING ARE NEEDED FOR ROUTINE VENIPUNCTURE: Evacuated Collection Tubes - The tubes are designed to fill with a predetermined volume of blood by vacuum. Clin Lab. Place a pillow under the patient's arm if additional support is needed. Using the smallest acceptable needle size can help reduce the risk of bleeding or hematoma . Most commonly, venipuncture will be performed on the Antecubital Fossa, or the inside of the elbow. What is the most common complication of venipuncture? Give an example of each. Uman LS, Birnie KA, Noel M, et al. Prepare the patient's arm using an alcohol prep. A. just prior to needle insertion chemistries, serology, immunnology, blood bank. Place blood collection equipment away from patients, especially children and psychiatric patients. The first drop contains excess tissue fluid and must be wiped away. Carry out hand hygiene before and after each patient procedure, before putting on and after removing gloves. While most patients veins are compatible with a standard needle gauge, others require a. . Ask the patient orcaregiver to state the patients name and date of birth. www.mlo-online.com is using a security service for protection against online attacks. Significant increases can be found in total protein, aspartate aminotransferase (AST), total lipids, cholesterol, iron, Affects packed cell volume and other cellular elements. C. sterile gauze pads This preliminary action allows you to safely adjust the needle's position. Apply the tourniquet below the IV site. Filter paper should touch only the blood and not the heel or finger. Let's take a look at the types of websites you and your staff need to be wary of and how to avoid them. obvious areas of skin infections 7. A. EMLA Use a smaller tube with less vacuum. Calculate H\Delta \mathrm { H }H of this reaction. Contaminated surfaces must be cleaned with freshly prepared 10% bleach solution. What Is Venipuncture? Procedures, Risks & Fears - Phlebotomy Coach 4. Whole blood specimens may not be able to be analyzed if microscopic clots are present. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2023 wikiHow, Inc. All rights reserved. While hand veins may be utilized for blood draws and intravenous infusions, veins in the feet and legs should be avoided for adults. Patient identification is critical for safety. Dorsal hand veins are often utilized for intravenous infusions but are viable options for blood draw sites. It is observed that if the tourniquet is left on longer than 2 minutes, changes in the value of a total protein test occur. Effects of Exercise: Muscular activity has both transient and longer lasting effects. Contains acid citrate dextrose. 8. If an IV is in place, samples may be obtained below but NEVER above the IV site. 70% isopropyl alcohol The 6 Mistakes to Avoid When Building a Business Website (and - Medium You may also remove the tube, wait a few seconds for blood flow to resume, and then engage a short drawtube. Kiechle, Frederick L. So Youre Going to Collect a Blood Specimen: An, Introduction to Phlebotomy, 11th Edition. How can you tell if you are palpating a vein? Tourniquet - Wipe off with alcohol and replace frequently. In this elbow pit, phlebotomists have easy access to the top three vein sites used in phlebotomy: Median cubital vein. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. How to Troubleshoot a Difficult Venipuncture: 14 Steps - wikiHow Tubes with different additives are used for collecting blood specimens for specific types. By using our site, you agree to our. Areas in which two veins join should be avoided where possible, as valves are often present. Background: Venipuncture is the most common invasive medical procedure performed by health care providers. Cleanse the fingertip of the 3rd (middle) or 4th (ring) finger with an alcohol prep. (See picture.) increase the circulation of blood to the area. Adhesive bandages / tape - protects the venipuncture site after collection.

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