1.
Which of the following veins is most commonly used for venipuncture during phlebotomy?
Correct Answer
C. Median cubital vein
Explanation
The median cubital vein, located in the antecubital fossa (the area inside the elbow), is the most commonly used vein for venipuncture during phlebotomy. It is preferred due to its large size, superficial location, and relative stability during needle insertion. The cephalic and basilic veins are also used but are less preferred due to their more variable positions and proximity to arteries and nerves. The femoral vein is used less frequently due to its deeper location and increased risk of complications.
2.
The smallest veins of the human anatomy are known as_____
Correct Answer
C. Venules
Explanation
Venules are the smallest veins in the human anatomy. Veins are blood vessels that carry deoxygenated blood back to the heart. Venules are smaller than veins and connect capillaries to larger veins. They play a crucial role in the microcirculation system, allowing the exchange of nutrients and waste products between the blood and surrounding tissues. Arteries, on the other hand, carry oxygenated blood away from the heart, while arterioles are small branches of arteries that regulate blood flow to specific tissues. Capillaries are the smallest blood vessels where the exchange of oxygen, nutrients, and waste products occurs.
3.
Squeezing the finger too vigorously during the capillary bloood collection can cause erroneous lab results due to
Correct Answer
D. Dilution with tissue fluid
Explanation
Squeezing the finger too vigorously during capillary blood collection can cause erroneous lab results due to dilution with tissue fluid. When excessive pressure is applied, it can cause the release of tissue fluid into the blood sample, leading to inaccurate test results. This dilution can affect the concentration of various components in the blood, potentially altering the measurements and leading to incorrect interpretations. Therefore, it is important to apply the appropriate amount of pressure during capillary blood collection to avoid dilution with tissue fluid and ensure accurate lab results.
4.
Why does a multi sample needle have a rubber sleeve over the end of the needle that is inserted into the collection tube?
Correct Answer
C. To prevent blood from seeping into the adapter
Explanation
The rubber sleeve over the end of the needle is used to prevent blood from seeping into the adapter. This is important because if blood were to enter the adapter, it could contaminate the sample or cause inaccurate test results. The rubber sleeve acts as a barrier, ensuring that only the intended amount of blood is collected and preventing any leakage or seepage.
5.
To draw blood from a patient with an open IV line the selected site should be located _____
Correct Answer
A. Below the IV
Explanation
To ensure accurate blood sampling without contamination from IV fluids, the venipuncture site for a patient with an open IV line should be below the IV site. This location reduces the risk of dilution of the blood sample and ensures reliable test results. Typically, the antecubital fossa is chosen for venipuncture.
6.
Confirming an outpatients name and _____ provides two important identifiers for blood collection.
Correct Answer
C. Date of birth
Explanation
Confirming an outpatient's name and date of birth provides two important identifiers for blood collection. The name ensures that the correct patient is being treated, while the date of birth helps to further confirm their identity and prevent any mix-ups or errors. This information is crucial in ensuring that the blood collection process is accurate and safe for the patient.
7.
An evacuated tube system for venipuncture consists of ALL BUT WHICH ONE of these components?
Correct Answer
C. Compartmentalized, hard shell collection tray
Explanation
The evacuated tube system for venipuncture consists of a vacuum collection tube with a color-coded stopper, a special plastic holder known as an adapter, and a double-sided multi-sample needle with a slanted bore. These components are essential for the collection and transportation of blood samples. However, the compartmentalized, hard shell collection tray is not a necessary component of the system. It may be used for organizational purposes, but it is not directly involved in the venipuncture process.
8.
A complete blood count (CBC) is collected in an evacuated tube with what color stopper?
Correct Answer
B. Lavender
Explanation
A complete blood count (CBC) is collected in an evacuated tube with a lavender stopper. The color of the stopper indicates the type of additive present in the tube. In the case of a CBC, the lavender stopper signifies the presence of an anticoagulant called EDTA (ethylenediaminetetraacetic acid). EDTA prevents blood from clotting, allowing for accurate analysis of blood cell counts and morphology.
9.
Which of these needle has the smallest bore or diameter?
Correct Answer
B. 23 Gauge
Explanation
The needle with the smallest bore or diameter is the 23 gauge needle. Needle gauges are inversely related to their size, meaning that the smaller the gauge number, the larger the needle diameter. Therefore, among the given options, the 23 gauge needle has the smallest bore or diameter.
10.
When using two glass slides to make a blood smear, the reccomended angle of contact between them is approximately ______ degrees
Correct Answer
C. 30
Explanation
When making a blood smear using two glass slides, it is recommended to have an angle of contact of approximately 30 degrees. This angle allows for the blood to spread evenly and thinly across the slide, ensuring a good quality smear for examination under a microscope. A smaller angle may result in a thick smear, while a larger angle may cause the blood to pool or clump together, making it difficult to analyze.
11.
When performing a routine skin puncture, the site should be alcohol cleaned and _____
Correct Answer
C. Allowed to air dry on its own
Explanation
When performing a routine skin puncture, it is important to clean the site with alcohol to disinfect it. After cleaning with alcohol, the site should be allowed to air dry on its own. This is because allowing the site to air dry helps to prevent any contamination from towels or other materials that may not be completely sterile. Air drying also gives time for the alcohol to evaporate, ensuring that the site is dry before the puncture is performed.
12.
The body system the filters blood to eliminate waste, helps maintain blood pH and regulates water balance is the _______ system.
Correct Answer
B. Urinary
Explanation
The urinary system is responsible for filtering blood to eliminate waste, maintaining blood pH, and regulating water balance. It does this through the kidneys, which filter waste products and excess water from the blood to form urine. The urine is then eliminated from the body through the bladder. The respiratory system is primarily involved in gas exchange, the nervous system is responsible for transmitting signals and coordinating bodily functions, and the cardiovascular system transports oxygen, nutrients, and waste products throughout the body. Therefore, the urinary system is the correct answer.
13.
The most important step in the performance of a venipuncture is
Correct Answer
C. Identifying the patient
Explanation
Identifying the patient is the most important step in the performance of a venipuncture because it ensures that the procedure is being performed on the correct individual. Proper patient identification helps prevent errors such as collecting samples from the wrong person or administering treatments to the wrong patient. It is crucial for patient safety and to maintain accurate medical records.
14.
OSHA requires training and educational info be given to phlebotomists on ALL BUT WHICH ONE of the following topics?
Correct Answer
B. Preventing identification errors
Explanation
Phlebotomists are required to receive training and educational information on blood borne pathogens, needle and safety handling, and glass and sharps disposal according to OSHA regulations. However, preventing identification errors is not specifically mentioned as a topic that must be covered. This suggests that OSHA does not require specific training on preventing identification errors for phlebotomists.
15.
Which of these elements in blood is bound by EDTA in a collection tube to prevent clotting?
Correct Answer
C. Calcium
Explanation
EDTA (ethylenediaminetetraacetic acid) is a chelating agent commonly used in blood collection tubes to prevent clotting by binding to calcium ions. Calcium is an essential coagulation factor in the blood clotting cascade. By removing calcium, EDTA inhibits the activation of clotting factors and prevents the formation of clots. Therefore, calcium is the element in blood that is bound by EDTA in a collection tube to prevent clotting.
16.
The hands of the phlebotomist should be washed _________
Correct Answer
D. All answers are correct
Explanation
The correct answer is "all answers are correct" because it is important for the phlebotomist to wash their hands before and after specimen collection to maintain proper hygiene and prevent the spread of infections. Even if gloves are used during the collection process, handwashing is still necessary as gloves may have small tears or punctures that can expose the phlebotomist to potential pathogens. Therefore, all the given options are correct in emphasizing the importance of handwashing in phlebotomy.
17.
If a glass tube breaks during centrifugation, what sequence of actions would be best?
Correct Answer
C. Stop the centrifuge open the lid and use forceps to remove any glass
Explanation
The correct answer is to stop the centrifuge, open the lid, and use forceps to remove any glass. This is the best sequence of actions because stopping the centrifuge ensures that there is no further movement or spinning that could cause additional breakage or injury. Opening the lid allows for easy access to the broken glass. Using forceps to remove the glass is the safest method to avoid direct contact and potential cuts or injuries. Wearing gloves is not mentioned in the answer, but it is always recommended to wear appropriate protective gear when handling broken glass. Evacuating the room or dancing around are not appropriate actions in response to a broken glass tube during centrifugation.
18.
Whic of these is a common component of disinfectant solutions used for colection of blood cultures?
Correct Answer
A. Chlorhexidine
Explanation
Chlorhexidine is a common component of disinfectant solutions used for the collection of blood cultures. It is a broad-spectrum antimicrobial agent that effectively kills a wide range of bacteria, fungi, and viruses. Chlorhexidine is commonly used as a skin antiseptic before invasive medical procedures, including blood culture collection, to reduce the risk of infection. It has a long-lasting effect and is known for its effectiveness in killing microorganisms on the skin surface. Methanol, glutaraldehyde, and lidocaine are not commonly used in disinfectant solutions for blood culture collection.
19.
If the information of the patients id breacelet is NOT identical to the information on the phlebotomy test requisition and labels for that patient, the phlebotomist should _____
Correct Answer
B. Refrain from drawing the sample until ID is resolved
Explanation
If the information of the patient's ID bracelet is not identical to the information on the phlebotomy test requisition and labels for that patient, the phlebotomist should refrain from drawing the sample until ID is resolved. This is because it is crucial to ensure accurate identification of the patient before proceeding with any medical procedure. Drawing a sample without resolving the ID discrepancy could lead to potential errors and risks in patient care. It is important to prioritize patient safety and take the necessary steps to resolve any identification issues before proceeding.
20.
Before performing a venipuncture, why will a phlebotomist tie a tourniquet?
Correct Answer
C. To help locate the veins in the antecubital
Explanation
A phlebotomist will tie a tourniquet before performing a venipuncture to help locate the veins in the antecubital. By applying pressure to the area, the veins become more visible and easier to access, ensuring a successful blood draw.
21.
When a 5 millimeter evacuated tube appears to extract blood with too much force from a weak wein (causing the vein to collapse) the phlebotomist might have better results using a ______
Correct Answer
C. Pediatric sized tube
Explanation
When a 5 millimeter evacuated tube appears to extract blood with too much force from a weak vein, causing it to collapse, using a pediatric sized tube might yield better results. A pediatric sized tube has a smaller diameter compared to a regular tube, which means it exerts less suction force on the vein. This reduces the likelihood of the vein collapsing and makes it easier to extract blood without causing discomfort or complications.
22.
To collect blood for a prothrombin time test, use an eacuated tube with a ____ colored stopper
Correct Answer
A. Light blue
Explanation
The correct answer is light blue because a prothrombin time test requires the use of a sodium citrate anticoagulant, which is commonly found in light blue-stoppered tubes. This anticoagulant prevents blood from clotting, allowing accurate measurement of the prothrombin time, which is a measure of how long it takes for blood to clot. The light blue stopper distinguishes the tube from other types of tubes used for different tests, ensuring proper collection and accurate results.
23.
One bedside (point of care) laboratory test that is used before surgery to check whether a patient has a sufficient number of working platelets is known as the ___ test.
Correct Answer
C. Partial thromboplastin time
Explanation
Partial thromboplastin time (PTT) is a bedside laboratory test that is used before surgery to check whether a patient has a sufficient number of working platelets. PTT measures the time it takes for blood to clot and is used to evaluate the intrinsic pathway of coagulation. By assessing the clotting ability of the blood, PTT can help determine if a patient is at risk for excessive bleeding during surgery. Prothrombin time (PT) measures the extrinsic pathway of coagulation and is used to monitor the effectiveness of anticoagulant therapy. Bleeding time measures the time it takes for a small puncture wound to stop bleeding. Complete blood counts (CBC) provide information about the number and types of blood cells present in the body.
24.
Paul phlebotomist draws CBC on patient fred jones , labels the lavender top tube and remove his gloves to go to lunch. Before he can leave patient Sam smith is sent to phlebotomist to have a full lipid profile drawn. paul puts on new gloves and draws a red top tube he recors the # hours post prandial. what step is missing?
Correct Answer
A. Hands arent washed in between
Explanation
The step that is missing is that the phlebotomist did not wash his hands in between drawing the lavender top tube for Fred Jones and drawing the red top tube for Sam Smith. It is important to wash hands in between patients to prevent the spread of germs and ensure proper hygiene.
25.
To collect blood without an addititve use an evacuated tube with a ___ colored stopper
Correct Answer
B. Red
Explanation
To collect blood without an additive, a red-colored stopper is used in an evacuated tube. The red stopper indicates that the tube is specifically designed for collecting blood samples without any additives. This helps ensure that the blood sample remains in its natural state without any interference from additives that could affect the test results.
26.
Can a phlebotomist legally draw blood from a fully cognizant (awake and aware) patient who refuses consent to it?
Correct Answer
A. No
Explanation
The correct answer is "no" because a phlebotomist cannot legally draw blood from a fully cognizant patient who refuses consent. Informed consent is a fundamental principle in healthcare, and patients have the right to refuse any medical procedure, including blood draws. Without the patient's consent, it would be considered a violation of their rights and potentially illegal to proceed with the blood draw.
27.
The single, most important way to prevent the spread of infection while performing phlebotomy is by __________.
Correct Answer
C. Washing hands
Explanation
The single, most important way to prevent the spread of infection while performing phlebotomy is by washing hands. This is because hands can easily come into contact with pathogens and other infectious materials during the procedure. Washing hands with soap and water or using hand sanitizer effectively removes these pathogens, reducing the risk of spreading infection to both the phlebotomist and the patient. Wearing a mask, cleaning spills, and burning waste are also important infection control measures, but they are not as crucial as proper hand hygiene in preventing the spread of infection during phlebotomy.
28.
After drawing blood from a patient, the phlebotomist should dispose of the needle by __________.
Correct Answer
B. Depositing it in an approved "sharps container"
Explanation
After drawing blood from a patient, the phlebotomist should dispose of the needle by depositing it in an approved "sharps container." This is the correct answer because sharps containers are specifically designed to safely store used needles and other sharp medical instruments. By disposing of the needle in a sharps container, the phlebotomist ensures that it will be properly contained and cannot cause harm or be reused by anyone else. This is the recommended method of disposal to prevent accidental needlestick injuries and the spread of infections.
29.
Negligence by a professional person is called __________.
Correct Answer
C. Malpractice
Explanation
Negligence by a professional person refers to the failure to provide the standard level of care or skill expected in their profession, resulting in harm or injury to another person. This term specifically applies to professionals such as doctors, lawyers, or accountants. The term "malpractice" is commonly used to describe this type of negligence in professional settings.
30.
Which of the following is the single most common source of HIV and HBV in the workplace?
Correct Answer
D. Blood
Explanation
Blood is the single most common source of HIV and HBV in the workplace because these viruses can be transmitted through contact with infected blood. HIV is primarily transmitted through sexual contact, sharing needles, or from mother to child during childbirth or breastfeeding. HBV is mainly transmitted through sexual contact, sharing needles, or from mother to child during childbirth. While other bodily fluids such as semen, saliva, and pleural fluid may contain these viruses, the concentration of the virus in blood is typically higher, making it a more significant source of transmission.
31.
The heart, lymphatic organs, and blood vessels are in the __________.
Correct Answer
B. Cardiovascular system
Explanation
The heart, lymphatic organs, and blood vessels are all components of the cardiovascular system. The cardiovascular system is responsible for circulating blood throughout the body, delivering oxygen and nutrients to the cells and removing waste products. The heart acts as a pump, while the blood vessels transport the blood. The lymphatic organs, such as the spleen and lymph nodes, are also part of the cardiovascular system as they help filter and produce lymph, which is a fluid that plays a role in immune function.
32.
The venipuncture site should be cleansed in a circular motion from the center to the __________.
Correct Answer
A. PeripHery
Explanation
When performing a venipuncture, it is important to cleanse the site properly to prevent infection. Cleansing the site in a circular motion from the center to the periphery ensures that any potential contaminants are pushed away from the puncture site. This technique helps to maintain the cleanliness and sterility of the area, reducing the risk of introducing bacteria or other pathogens into the bloodstream. Therefore, the correct answer is "periphery."
33.
Within the capillaries, blood cells __________.
Correct Answer
A. Give away oxygen
Explanation
Within the capillaries, blood cells release oxygen to the surrounding tissues. This process occurs as oxygen diffuses from the high concentration in the blood cells to the lower concentration in the tissues. Therefore, the blood cells "give away" oxygen.
34.
Which is not an infection control method?
Correct Answer
A. SpHygmomanometers
Explanation
Sphygmomanometers are not an infection control method because they are used to measure blood pressure and do not directly prevent the spread of infections. Protective clothing, biohazard containers, and hand washing are all infection control methods commonly used in healthcare settings.
35.
Safe working conditions for employees are regulated by __________.
Correct Answer
B. OSHA
Explanation
OSHA stands for Occupational Safety and Health Administration. It is a regulatory agency that ensures safe and healthy working conditions for employees. OSHA sets and enforces standards, provides training and education, and conducts inspections to promote workplace safety. It is responsible for preventing workplace injuries, illnesses, and fatalities by enforcing regulations related to hazardous materials, machinery, equipment, and other workplace hazards. OSHA plays a crucial role in protecting the rights and well-being of workers across various industries.
36.
Which of the following are types of tourniquets used in specimen collection?
Correct Answer
D. All of the above
Explanation
Types of tourniquets used in specimen collection include velcro, blood pressure cuff, and pliable strap. Each type can be utilized to restrict blood flow temporarily, making veins more prominent and facilitating the blood draw process.
37.
The color of normal serum is usually __________.
Correct Answer
A. Straw to yellow
Explanation
Normal serum is usually straw to yellow in color. This is because serum is the liquid portion of blood that remains after the blood has clotted and the cells have been removed. The color of serum is influenced by various factors, including the presence of certain proteins and pigments. In healthy individuals, the color of serum is typically pale yellow to straw-colored.
38.
Which of the following conditions would stop a phlebotomist from drawing blood from a patient's vein?
Correct Answer
E. All of the Above
Explanation
The conditions that would typically stop a phlebotomist from drawing blood include having a mastectomy on the same side, a recent heart attack, an IV in the opposite arm, and active tuberculosis. Each situation requires special considerations to ensure patient safety and to follow appropriate medical protocols.
39.
Chemicals that precent blood from clotting are called __________.
Correct Answer
C. Anticoagulants
Explanation
Anticoagulants are chemicals that prevent blood from clotting. They work by inhibiting the clotting factors in the blood, such as thrombin and fibrinogen. This helps to prevent the formation of blood clots, which can be dangerous and lead to conditions like deep vein thrombosis or stroke. Anticoagulants are commonly used in medical treatments, such as during surgeries or for patients with certain medical conditions like atrial fibrillation. They are also used in laboratory settings to prevent blood samples from clotting, allowing for accurate testing and analysis.
40.
Red and white blood cell counts are examples of __________ tests.
Correct Answer
C. Hematology
Explanation
Red and white blood cell counts are examples of hematology tests. Hematology is the branch of medicine that deals with the study of blood and blood-forming organs. It involves the analysis of blood cells, including red blood cells and white blood cells, to diagnose and monitor various diseases and disorders such as anemia, infections, and leukemia. Therefore, hematology is the correct answer as it specifically relates to the study and analysis of blood cells.
41.
Treating all specimens as if they are hazardous and infectionsis the basis for __________.
Correct Answer
C. Universal precautions
Explanation
Treating all specimens as if they are hazardous and infections is the basis for universal precautions. This approach ensures that healthcare workers take necessary precautions to prevent the transmission of infections, regardless of the perceived risk level of the specimen. By following universal precautions, healthcare professionals can protect themselves and others from potential exposure to pathogens and maintain a safe working environment.
42.
Drugs used to destroy or kill bacteria that cause disease, are called __________.
Correct Answer
D. Anitbiotics
Explanation
Antibiotics are drugs that are used to destroy or kill bacteria that cause disease. They are specifically designed to target and eliminate bacteria, helping to treat and prevent bacterial infections. Disinfectants are substances used to kill microorganisms on surfaces, while germicides are agents that kill germs. Sterilizers are used to completely eliminate all forms of microorganisms, including bacteria, viruses, and fungi. Therefore, the correct answer is antibiotics.
43.
When the heart is contracting, the pressure is highest. This pressure is called the __________.
Correct Answer
A. Systolic pressure
Explanation
Systolic pressure refers to the highest pressure in the arteries when the heart is contracting or pumping blood. This occurs during the systole phase of the cardiac cycle.
44.
The process by which an object or area becomes unclean is known as __________.
Correct Answer
A. Contamination
Explanation
Contamination refers to the process of an object or area becoming unclean. It involves the introduction of unwanted or harmful substances, such as dirt, germs, or pollutants, into a previously clean or sterile environment. This can occur through various means, such as physical contact, airborne particles, or exposure to contaminated surfaces or substances. Contamination can pose risks to health and safety, as it can lead to the spread of infections or diseases. Therefore, it is important to take measures to prevent and control contamination in order to maintain cleanliness and hygiene.
45.
The health care worker is protected by law if it can be determined that he or she acted as expected when compared with fellow workers. This is called __________.
Correct Answer
B. Reasonable care
Explanation
The concept of "reasonable care" refers to the legal standard that determines whether a person has acted with the level of caution and prudence that a reasonable person would exercise in similar circumstances. In the context of the question, if a health care worker can demonstrate that their actions align with what would be expected from their peers in the same profession, they are protected by law. This means that as long as the health care worker has acted reasonably and in accordance with industry standards, they are not liable for any potential harm or negligence.
46.
Which of the following is not known to transmit HIV?
Correct Answer
D. Sweat
Explanation
Sweat is not known to transmit HIV because the virus cannot survive outside of the body for long periods of time. HIV is primarily transmitted through specific bodily fluids such as blood, semen, vaginal secretions, and breast milk. Sweat does not contain a high enough concentration of the virus to transmit it to another person. Therefore, it is not considered a mode of transmission for HIV.
47.
Consent to treament based upon full understanging of all possible risks of unpreventable results of treatment is called __________.
Correct Answer
C. Assumption of risk
Explanation
Assumption of risk refers to the consent to treatment based on a full understanding of all possible risks and unpreventable results of the treatment. It means that the individual acknowledges and accepts the potential negative outcomes that may arise from the treatment and still chooses to proceed. This concept is often applied in medical settings, where patients are required to give informed consent before undergoing any procedures or treatments.
48.
Infections that can be spread from person to person are called __________.
Correct Answer
B. Communicable
Explanation
Infections that can be spread from person to person are called communicable. This term refers to diseases or illnesses that can be transmitted through direct contact, such as respiratory droplets or bodily fluids. It encompasses a wide range of contagious diseases, including common colds, influenza, and sexually transmitted infections. The term "communicable" highlights the ability of these infections to be easily transmitted from one person to another, emphasizing the importance of taking necessary precautions to prevent their spread.
49.
A tube adapter that has been visibly contaminated with blood should be disposed of in __________.
Correct Answer
C. A biohazardous waste container
Explanation
The tube adapter that has been visibly contaminated with blood should be disposed of in a biohazardous waste container. This is because blood is considered a biohazard and can potentially contain infectious materials. Disposing of the contaminated tube adapter in a biohazardous waste container ensures proper containment and prevents any potential spread of infection.
50.
A violation of a person's right to have his or her name, photograph, or private affairs made public without giving consent is called __________.
Correct Answer
C. Invasion of privacy
Explanation
Invasion of privacy refers to the act of violating someone's right to keep their personal information, such as their name, photograph, or private affairs, private without their consent. This can occur through various means, such as unauthorized publication or dissemination of personal information. It is a breach of an individual's privacy rights and can have legal consequences.