With the development of the Evacuated Method, the syringe procedure fell mostly out of favor due to the fact that it requires multiple “sticks” when needing to collect more than one tube of blood. This venipuncture procedure uses the traditional needle and plunger system to draw blood into a tube. With needle and syringe. Blood Collection: A Short Course, 2nd edition UNIT 2 VENIPUNCTURE EQUIPMENT Marjorie Schaub Di Lorenzo, MT (ASCP)SH Susan King Strasinger, DA, MT (ASCP) 2. Excessive resistance may lead to the build-up of pressure and eventual failure of the syringe pump Specimens for Hemostasis Clearing Process - Lecture notes 7 Venipuncture is when a vein is pierced by a needle for either intravenous injection or the removal of blood. The syringe method of venipuncture is beneficial when small amounts of blood need to be drawn or when a patient has small or fragile veins, according to Kathryn Kalanick in her book Phlebotomy Technician Specialist: A Practical Guide to Phlebotomy. Venipuncture Equipment Unit 2. 2. Disadvantages of Capillary Blood Collection Problems with bleeding and infection can occur with either method. You attach the needle device to the tube holder, insert the needle into the vein, and engage the tube. A disadvantage of the syringe method is that there is the potential for needle stick when depositing blood into the collection tube. Calcified nodules can develop at the site of collection, especially in infants. Advantages Disadvantages Prevents reuse of syringe either inadvertently or illegally Cost: one will be needed wherever injections are given and will require maintenance. Advantages of Dried Blood Spots Collection simple Most analytes stable Transportation simple Storage easy/compact Whole to bags as patient spots are collected Sites collect dried blood spots from individuals at the time of finger stick or venipuncture Spots are stored, then sent to a Sharps containers may still be needed for lancets and other sharps waste Reduces volume of sharps wastes Some models collect the sharps in containers that need 4. There are three common venipuncture sites, as shown through the BD Diagnostics, and one that provides a possible alternative when other areas are inaccessible. But there should not be any air present in the syringe at the time of blood collection. ADVANTAGES OF VENIPUNCTURE
allows repetition of tests/follow up
avoids tissue juices
can be mailed
Fastest method from a large number of patients
DISADVANTAGES OF VENIPUNCTURE

• More complications may arise Holding the needle in line with the vein, use a quick, small thrust to penetrate the skin and vein in one motion. Compared with the traditional syringe, the price of the syringe is more expensive. Review the advantages and disadvantages of IV medications (Table 7.7) Be able to answer the preparation questions for intravenous medication in Table 7.9 before administering the medication. 3. Venipuncture Methods ... system - needle stick risk low The vacuum draws blood inside the tube. 1. There is also lower blood pressure in veins so that bleeding can be stopped more quickly and easily than with arterial puncture. Blood sampling or blood collection method is an essential procedure in modern medicine. Capillary blood collection has been around for decades. It consists of a needle device, a tube holder, and an air-evacuated tube. Disadvantage: 1. ⇒ With the left hand, hold the patient’s arm so that the skin over the vein gets tightened and more prominent. Eliminating dosing errors and ease of use are two of the greatest advantages of pre-filled syringes. Venipuncture needle and syringes have several advantages over other products available in the market. An insulin pen is a device that makes injecting insulin easier and more convenient for you compared to using a syringe. This chapter covers background information (Section 3.1), practical guidance (Section 3.2) and illustrations (Section 3.3) relevant to closed and open blood-sampling systems.Several blood-sampling systems are available for phlebotomy.The system most appropriate for the procedure should be chosen. Explain the advantages and disadvantages of the syringe method of drawing blood as opposed to the evacuated system. This helps reduce the necessity of repeat sticks to get enough blood for testing. ⇒ Assemble needle and syringe, check that it is sharp, unblocked and moving smoothly by passing the air through the syringe. How the evacuated system works in phlebotomy? 2. One advantage of the Vacutainer system is that Pull the skin tight with your thumb or index finger just below the puncture site. One advantage of the Vacutainer system … Wing infusion set (butterfly) is used for venipuncture on small veins, such as those in the hand and in elderly or pediatric patients Unlike other venepuncture systems, which require the phlebotomist to accurately draw the correct amount of blood needed for a test, Vacutainer tubes are calibrated to fill to the specified amount needed. Explain the advantages and disadvantages of the syringe method of drawing blood as opposed to the evacuated system. An advantage of the syringe method is that blood appears in the hub when the vein has been entered. A disadvantage of the syringe method is that there is the potential for needle stick when depositing blood into the collection tube. The syringe method is an older venipuncture procedure that is not used very often. There are many pros to using disposable syringes such that they are easy to afford and can supply an entire facility. 5. Because limited venous access may be a life-threatening complication of venipuncture, maintaining the vein’s integrity is essential. Syringe Method. The Vacutainer system of venipuncture uses a closed system which reduces the risk of spilled blood. Obtaining adequate and correct blood specimens by capillary or venipuncture on adults, children advantages and disadvantages. 3. List the common complications associated with skin puncture. Venipuncture requires good skills in order to perform the procedure not only correctly, but also painlessly. Blood Specimen Collection: Venipuncture Syringe Method ... risks associated with venipuncture, such as anemia, anticoagulant therapy, low platelet count, a bleeding disorder, venous collapse, traumatic venipuncture, or phlebitis. A patient with veins that may collapse or become injured from excessive syringe pressure may require an alternate method of venous sampling or the use of a smaller syringe. Evacuated tube system vs. syringe. If the medication has been diluted and there is wastage, always discard unused diluted portion of the prepared IV medication before going to the bedside. ∗ Differentiate between an evacuated tube system, syringe, and a winged blood collection set for the collection of blood by venipuncture. Advantages of Insulin Pens easy to use and carry around no need to draw insulin from a vial (bottle) easy to adjust dose less wastage of expired insulin look less scary than a syringe do not require refrigeration as long as you keep it out of direct sunlight in room temperature … There are some slight risks associated with venipuncture which may include excessive bleeding, feeling light-headed, fainting, nerve damage, hematoma (accumulation of … Users of these guidelines should read Chapter 2 before reading the information given below. 12 Fecalysis - Notes extracted from Ma'am Camille Mendoza, RMT 1. The syringe method of venipuncture using a winged infusion set is preferred when a patient is dehydrated, has small veins, or has veins that are difficult to … A syringe needle (SN) is commonly used to obtain blood specimens from the femoral vein. A syringe pump simply pushes a syringe at a given speed, first problem is the stepper motors inside them. Place a sheathed needle or butterfly on the syringe. Unlike other venipuncture systems, which require the phlebotomist to accurately draw the correct amount of blood needed for a test, Vacutainer tubes are calibrated to fill to the specified amount needed. Butterfly needles can also be used to 2. Outcome: Perform a venipuncture using the syringe method. Conditions: Given the following: disposable gloves, tourniquet, antiseptic wipe, syringe and needle, evacuated tubes with labels, needleless blood transfer tube, test tube rack, sterile gauze pad, Vacutainer Advantages & Disadvantages – EHow | How To Videos … Sarstedt manufactures a blood-drawing system (S-Monovette) that uses this principle. 6. Phlebotomists regularly use butterfly needles to obtain blood samples for complete blood counts (CBC), cholesterol tests, diabetes monitoring, STD screens, and other blood-based tests. I was honestly expecting much more precision but they both have advantages and disadvantages. Remove the cap and turn the bevel up. Syringe Method Typical syringe type needle for venipuncture. Patients may feel faint after any type of blood drawing. Venipuncture allows the collection of more volume of blood because multiple collections could be done. The blood can be taken from a vein where it is called venous blood collection or arteries where it is called arterial blood collection. Once the tube is punctured by engaging the tube onto the needle, the negative pressure causes suction to draw the blood into the tube. The evacuated tube system (ETS) is the standard equipment used for routine venipuncture. It consists of a needle device, a tube holder, and an air-evacuated tube. Pre-filled syringes have also been utilized across a wide range of therapeutic sectors, such as vaccines, blood stimulants, and therapeutic proteins. The relative advantages and disadvantages of both systems are evaluated. These needles are also commonly used at blood banks for people wanting to donate blood. But the drawbacks and disadvantages of this method include : 1) The risk of hemolysis because of the small gauge of the needle which causes the blood cell to be damaged and platelets clumping. Venipuncture is when a vein is pierced by a needle for either intravenous injection or the removal of blood. Blood tubes are evacuated. Where that particular vein is located is called a venipuncture site. We compared the perceived safety, patient pain, and efficacy of … Veins are favored over arteries because they have thinner walls, and thus they are easier to pierce. Pros: Cons direct access to the circulatory system greater likelihood of sustaining an accidental needlestick potentially less traumatic to the patient greater potential for patient injury the ability to draw larger volumes of blood potential for hemoconcentration … There are various types of syringes that determine their usage and other variables regarding how they should be used. The vacuum tube (VT) method avoids the needle stick potential of the SN technique during transfer of blood from the syringe to the collection tubes. When other methods of phlebotomy are used, there is a risk that hemolysis, bursting of blood cells, may occur. The patient’s condition should be considered however; if there is no danger to the patient and several tests are required, then multiple tubes maybe collected. Some health care workers prefer to use a syringe-needle technique for venipuncture. This method can be preferred on the elderly, those with cancer, severe burns, obesity, or where the veins are unreliable or fragile. VENIPUNCTURE PROCEDURE USING A SYRINGE: 1. When it began, the technique was used to obtain blood from infants for genetic screening.Drawing five or ten µl from a newborn can be difficult and potentially harmful, so small-volume sampling had obvious applications in this area.. Capillary blood is obtained by pricking a finger in adults and a heel in infants and small children. Venipuncture is procedure of collecting blood or administering IV therapy and drugs through a vein. When other methods of phlebotomy are used, there is a risk that hemolysis, bursting of blood cells, may occur. Overuse of the same area for collection can cause scarring. Capillary sampling limitations: biochemical testing Hemolysis and potassium • Measurement of potassium from capillary samples • Patel et al, 1983 Arch Dis Child 1988;63:752-3 • 40 neonates with art line and capillary blood gas and electrolyte measurements • Capillary K ran 1.2 ± 1.0 higher than art line after 2 mL flush Purpose of Blood Collection […] With the development of the Evacuated Method, the syringe procedure fell mostly out of favor due to the fact that it requires multiple “sticks” when needing to collect more than one tube of blood. Because the injection process is mild and rapid, it is obviously different from the traditional syringe, so it will take some time to get used to whether the injection is successful or not. 1) It is generally less painful Because the butterfly needle is a smaller needle gauge (23 gauge is a standard ) 2) Using a butterfly infusion set is less likely to collapse the patient’s vein, because of the smaller needle gauge and length of attached tubing, which dissipates the strength of the vacuum when using the evacuated system. Assessed the patient’s history for Box 21.1 summarizes the advantages and disadvantages of the IV route of drug administration. The evacuated tube system (ETS) is the standard equipment used for routine venipuncture. o An advantage of the syringe method is that blood appears in the hub when the vein has been entered. 3. The Vacutainer system is quicker and simpler to use, with greater versatility, producing blood specimens of higher quality and at a cost comparable with that by the syringe system. This helps reduce the necessity of repeat sticks to get enough blood for testing. Introduction to Hematology 3.1. Syringe system is use when patients with fragile or small veins and the vacuum of the collection tube is likely to collapse the vein. Although they have improved significantly you will still have problems (i.e instability) with stepping at lower speeds if you need that. An advantage of the syringe method is that blood appears in the hub when the vein has been entered. Minute quantities of blood can be taken from various sites by pricking the skin. The following are advantages of venipuncture over capillary puncture: 1. Explain the advantages and disadvantages of the. Disposable syringes are becoming progressively popular due to their affordability and prevention of infection. 2) It is difficult to collect large quantities of blood using this method. Hematologic Test - Notes taken from the lecture of Sir Antonio Pascua, Jr., RMT 3.2. Hemostasis Test - Notes taken from the lecture of Sir Antonio Pascua, Jr., RMT 3.3.

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