Practice Exam 3
A supplier offers a 10% discount when ordering twelve or more items. Each item costs $40. How much will twelve items cost?
$432 Explanation $40 x 12 = $480. You then need to deduct 10% of $480 to find the discounted price. 10% of $480 = $48. Subtract $48 from $480 to find the discounted price of $432, which is the cost of the twelve items.
Which of the following measures is equivalent to 500 mg?
0.5 g Explanation 0.5 g is equivalent to 500 mg. This calculation is based on the fact that 1 g equals 1000 mg.
Mr. Brown, who is thirty-nine years old, received second- and third-degree burns on his chest, abdomen, upper back, and genital area. Which of the following is an estimation of the extent of his burn?
28% Explanation To calculate the amount of skin surface burned on an adult, you should use the rule of nines. Mr. Brown's chest, abdomen, and upper back each accounts for approximately 9% of the skin surface; 9% x 3 = 27%. His genital area counts as 1%. The total comes to 28%.
Which abbreviation (used verbally, but on the JCAHO Do Not Use list) refers to the left ear?
AS Explanation AS (auris sinistra) is the abbreviation meaning "left ear." AD (auris dextra) is the abbreviation meaning "right ear." OS (oculus sinister) is the abbreviation meaning "left eye." OU (oculus uterque) is the abbreviation meaning "each eye" or "both eyes." LE is not an abbreviation.
Which of the following radiological studies will show an occlusion of the coronary arteries?
Angiography Explanation A cardiovascular angiography is used to diagnose status of blood flow, collateral circulation, malformed vessels, aneurysm, narrowing or blockages of vessels, and presence of hemorrhage. An occlusion is a blockage.
A prescription reads: Ibuprofen 200 mg tabs 2 q 4-6 hr prn fever. Which of the following is indicated by the abbreviation prn?
As needed Explanation The abbreviation prn means "as needed".
Which of the following terms is in plural form?
Bacteria Explanation Bacteria is the plural form of bacterium.
Which of the following foods is an excellent source of potassium?
Bananas. Explanation Bananas are an excellent source of potassium, a nutrient that is important in glycogen formation, protein synthesis, and correcting imbalances of acid-base metabolism.
Which of the following statements was true of Special Delivery?
Both when something was marked Special Delivery, it was delivered as soon as it reached the recipient's post office AND it alerted postal workers that a package or letter contained unusual contents. Explanation Special Delivery allowed mail to be delivered as soon as it reached the recipient's post office, and alerted postal workers of unusual contents. Special Delivery stamps could be purchased at the post office. Special Delivery was used for regular First Class, Second Class, and insured mail. Special Delivery could not be used for mail addressed to a post office box or military installation. This is an outdated service that might still appear on certification exams.
Which of the following is the correct postal abbreviation for Circle?
CIR Explanation The postal abbreviation for "Circle" is CIR.
Which of the following techniques can show a detailed cross section of tissue structure?
CT Explanation CT is a radiographic technique that produces a film representing a detailed cross section of tissue structure.
Which of the following terms is one of the six Cs of charting?
Client's words Explanation To maintain accurate patient records, you should keep these six concepts in mind: client's words, clarity, completeness, conciseness, chronological order, and confidentiality.
A deceased patient's chart should be transferred to which of the following files?
Closed Explanation Closed files are records of patients who have died, moved away, or otherwise terminated their relationship with the physician.
Which of the following is considered the best type of filing system because it is designed to reduce the misfiling of patient files?
Color coded Explanation A color-coded filing system is the best type of filing system because it is designed to reduce the misfiling of patient folders. An out-of-place file folder is easily noticed because the color tab attached to it breaks the color sequence of the surrounding files.
Which of the following is true of the specific immune response?
Controlled by T cells, it is highly changed after exposure to a pathogen. Explanation The specific immune response is required if the nonspecific immune response cannot cope with invasion or injury. It is directed and controlled by T and B cells. These cells can remember pathogens and respond more quickly in subsequent invasions.
Which of the following terms describes the control of bleeding by using wet, cold applications?
Cryotherapy Explanation Cryotherapy is a treatment that uses either wet, cold applications or dry, cold applications. It may prevent swelling, control bleeding, reduce inflammation, provide anesthetic effects, reduce pus formation, or lower body temperature.
Groups of procedures related directly to diagnosis are referred to as
DRGs. Explanation Diagnostic-related groups, or DRGs, are groups of procedures or tests related directly to diagnosis. The fixed fees paid by Medicare Part A are based on DRGs.
Which accounting system uses the equation Assets = Liabilities + Owner Equity?
Double-entry Explanation The double-entry system is based on the accounting equation: Assets equal Liability plus Owner Equity . This system requires more extensive knowledge of accounting procedures than the simpler single-entry or pegboard system.
Bills and statements of account should be sent as
First-Class Mail. Explanation Items that weigh 13 ounces or less may be sent as First Class Mail. First Class Mail that weighs over 13 ounces becomes Priority Mail. Anything the post office accepts for mailing can be mailed as First Class Mail; however, some things must be mailed as First Class Mail (or Priority Mail). Handwritten or typewritten material, bills, statements of account or invoices, and credit cards should be mailed First Class.
A certain patient often comes to your office for cancer treatment. When this patient comes in with a sore throat caused by the flu, what is the primary diagnosis according to the ICD-9-CM?
Flu Explanation The primary diagnosis refers to the main condition for which a patient is treated. When a cancer patient comes in with the flu, the primary diagnosis will be the flu, not cancer.
Which of the following microorganisms is the main bloodborne hazard for health care workers?
Hepatitis B virus Explanation Hepatitis B virus is the main bloodborne hazard for health care workers.
Which of the following is the role of the umbilical vein in fetal circulation?
It transports oxygen from the placenta to the fetus. Explanation The umbilical vein transports oxygen from the placenta to the fetus. The umbilical artery transports blood from the fetus to the placenta to get oxygen and to get rid of carbon dioxide.
Which of the following drugs is an example of a Schedule V drug?
Lomotil Explanation Lomotil® is a trademark for an antidiarrheal drug, classified as a Schedule V drug with low abuse potential and accepted medical use. Diazepam and Talwin® are examples of Schedule IV drugs, amphetamine is listed in Schedule II, and heroin is classified as a Schedule I drug.
Which of the following studies does not use radiation to produce images?
MRI Explanation An MRI does not use radiation to produce images. Magnetic resonance imaging is based on the resonance of atomic nuclei in a strong magnetic field, which means that this type of study uses radiofrequencies instead of ionizing radiation to produce images.
How can you protect your computerized medical office records against fires and computer viruses?
Make backup copies of all files nightly AND store backup files off the premises. Explanation To protect essential computerized information, it is important to create regular backup files on disks, CD-ROMs, or zip drives. It's also important to store these backup files off the premises. While not opening an email attachment from someone you don't know or an attachment you did not expect to receive provides good protection against certain computer viruses, it will definitely not protect your computer from a fire. Opening an email is usually harmless, since viruses are usually programs sent as an attachment to emails. Another good way to protect your computers from viruses is by purchasing an up-to-date virus detection and protection program.
HCPCS is the abbreviation for the Health Care Procedural Coding System, mandated by Congress for...
Medicare. Explanation HCPCS, pronounced "hic-pics," is mandated by Congress for Medicare claims and updated annually. It is a five-digit alphanumerical coding system that can accommodate the addition of modifiers.
Which of the following pieces of office equipment is necessary for electronic data interchange?
Modem Explanation A modem is necessary for electronic data interchange. Modem-to-modem connections provide secure and reliable high-speed, continuous transmissions.
Bob Johnson goes to his participating HMO provider for a checkup and a flu shot. The allowed charge for a checkup is $80, and the physician's usual fee is $85. The allowed charge for the flu shot is $50, and the physician's usual fee is $40. How much is Mr. Johnson charged for the visit?
Nothing Explanation In managed care, a participating provider agrees to accept allowed charges in return for various incentives, such as fast payment. If a participating provider charges more for a service than the allowed charge, the physician must write off the difference. The patient, like Mr. Johnson, may not be billed for this amount.
Which of the following glands regulates the level of calcium in the blood?
Parathyroid Explanation Parathyroid hormone is able to increase the absorption of calcium from the wall of the small intestine. The blood calcium level is therefore regulated by the parathyroid glands.
When filing patient records, which of the following should be filed first?
Paul Edward Jr. Explanation Out of the given list of names, Paul Edward Jr. would be the first patient record filed.
Artificial surfactants are administered to which of the following individuals?
Premature infants to prevent lung collapse Explanation Artificial surfactants are administered to premature infants to prevent lung collapse.
The early detection and treatment of a patient with Shigellosis prevents the spread of infectious disease by interrupting the chain of transmission at which of the following levels?
Reservoir host Explanation The chain of infection begins with the infectious agent. To prevent the spread of any infectious disease, the chain must be interrupted at any level, especially in transmission to the reservoir host.
Tonsillectomy is related to which of the following body systems?
Respiratory Explanation Tonsillectomy is related to the respiratory system. It is defined as "removal of the tonsil." The tonsils help to defend against inhaled (and also swallowed) pathogens. Therefore, they are also part of the immune system, but this was not one of the answer choices.
The abbreviation for "sexually transmitted disease" is
STD Explanation The abbreviation STD stands for "sexually transmitted disease." Although AIDS is a sexually transmitted disease, the abbreviation stands for "acquired immunodeficiency syndrome."
Which of the following represents the highest level of Maslow's hierarchy of needs?
Self-actualization needs Explanation Maslow's pyramid details how the basics of life are of first concern, and then needs for safety, love, and belonging must be met before a human being can begin to become fully actualized. Therefore, self-actualization is the highest-level need.
What should you do when a bill is 30 days overdue?
Send a letter or a reminder statement to the patient. Explanation You should send out the first collection letter or statement when an account is 30 days overdue, and follow up at 60, 90, and 120 days. You should not call the patient at work nor pay the patient a personal visit. Write a letter that reminds the patient of a possible oversight of debt and call the patient at home only during reasonable hours.
Which of the following is also called a bipolar lead?
Standard lead Explanation Standard leads are also called bipolar leads because they monitor two electrodes. Leads I, II, and III are standard or bipolar leads.
Which of the following types of bacteria is arranged in clusters?
Staphylococci Explanation Staphylococci are arranged in clusters. Streptococci are in chains. Diplococci are in pairs. Protozoa, which are single-celled microorganisms, are the lowest form of animal life. Spirilla are spiral-shaped bacteria.
Michelle Columbus is a patient at your medical facility. She has Medicare and a type of Medigap insurance. When you file her insurance claim, where should you send the claim?
The claim must be filed with Medicare first. Explanation Medigap policies are private insurance contracts that supplement regular Medicare coverage. They often pay for the beneficiary's deductibles, coinsurance, and, in some cases, services not covered by Medicare. If the subscriber has Medigap insurance, Medicare is still the primary payer, which means claims must be filed with Medicare first.
Which of the following statements in not true regarding the preparation of a patient for MRI?
The patient should avoid alcohol for four hours before the procedure. Explanation The preparation for an MRI includes asking the patient about possible allergies to contrast media, iodine, or shellfish. You should also ask whether any internal metallic matierals are present, and the should avoid caffeine for four hours before the examination.
Which of the following explanations is a reason to keep medical records?
They are used in malpractice suits. They are used to provide continuity of care. They are used for audits. They are used to evaluate the quality of treatment in a physician's office. All of these are correct.
According to the U.S. Equal Employment Opportunity Commission, physicians are required to keep payroll data for how many years?
Three Explanation The EEOC requires employers (which include physicians) to keep payroll data for three years. Also, employers must keep on file any employee benefit plan and any written seniority or merit system for the full period the plan or system is in effect, and for at least one year after its termination.
Which of the following crutch gaits can be used by patients who can bear full weight on one leg and no weight on the other?
Three-point Explanation A three-point gait is used by patients who can bear full weight on one leg and no weight on the other.
Which of the following medical instruments is used to examine the pressure of the eyes?
Tonometer Explanation A tonometer is used to examine the pressure of the eyes. By applying force, it determines the resistance of the eyeball to indentation.
When sending a specimen for a throat culture to an outside laboratory, which of the following substances should be used?
Transport medium Explanation When sending a specimen for a throat culture to an outside laboratory, a transport medium should be used. The fragile nature of many pathogens means that they are vulnerable to drying and to temperature changes. These specimens are usually placed in a liquid transport medium immediately after sampling them from the patient so that they will be unharmed and ready for laboratory testing.
All of the following waves are part of one heartbeat on an ECG tracing except_______.
V Explanation One heartbeat produces a pattern of waves designated P, Q, R, S, T, and sometimes U.
In a facility that has several procedure rooms and adequate personnel to staff them, which type of scheduling can be used to build in flexibility?
Wave Explanation Wave scheduling can provide flexibility to accommodate unforeseen situations, such as a patient who requires more time or a patient who arrives late. For wave scheduling to work, the medical facility should have multiple procedure rooms and adequate personnel.
Which part of the brain is responsible for language comprehension?
Wernicke's area Explanation Wernicke's area is responsible for language comprehension. Broca's area is responsible for motor speech and for controlling the mouth, tongue, and larynx. The occipital lobe is responsible for visual recognition. The parietal lobe is responsible for the interpretation of sensory input, such as taste. The insular lobe is responsible for visceral or primitive emotions, drives, and reactions.
When is it legal to release medical information about a patient?
When release of the information is ordered by a subpoena Explanation Before giving out confidential information, you should always get the patient's written consent. Other legally required disclosures include those ordered by subpoena, those dictated by statute to protect public welfare, and those considered necessary to protect the welfare of the patient or a third party.
If the physician in your office needs to refer a patient to another physician, how many referral names should you give to the patient?
You should give out at least two names. Explanation In this case, you should give the patient at least two referral names, with complete contact information.
The CMS-1500 is
a commonly used insurance claim form. Explanation The CMS-1500 is a commonly used insurance claim form.
Placing area rugs in the reception area of a medical office is an example of
a safety hazard. Explanation Placing area rugs in the reception area of a medical office is an example of a safety hazard. Area rugs may be tripping hazards because of turned-up corners and the potential of patients to slip when walking on them.
The suffix -penia means
abnormal reduction. Explanation The suffix -penia means "abnormal reduction" (leukopenia), -osis means "increase" (leukocytosis), -megaly means "enlargement" (cardiomegaly), and -plasia means "formation" (dysplasia). The suffix -algia means "pain" (neuralgia).
Amounts of money owed to a medical practice for professional services rendered are
accounts receivable. Explanation Accounts receivable are the amounts owed to a business for services or goods supplied.
Apical pulses can be auscultated in the
anterior thorax region. Explanation The heart is located in the anterior thorax region. The pulse of infants can generally be measured by auscultating this region.
Saturated fats
are derived from animal sources and are usually solid at room temperature. Explanation Saturated fats are usually solid at room temperature and are derived from animal sources. Saturated fats are found in milk, meat, and butter. They tend to raise blood cholesterol levels.
The prefix ab- means
away from. Explanation Ab- is a prefix meaning "away from."
Tetracyclines are
bacteriostatic antibiotics. Explanation Tetracyclines are a group of broad-spectrum bacteriostatic antibiotics that are effective against gram negative and gram positive micro organisms. Tetracyclines inhibit protein synthesis in bacterial cells. Examples are Aureomycin®, Vibramycin®, and Achromycin®. Tetracyclines are commonly used in the treatment of urethritis, cholera, lower respiratory tract infections, meningitis, rickettsiae, and Lyme disease.
The prefix retro- means
behind. Explanation The prefix retro- means "behind," peri- means "around," sub- means "below," pre- means "before," and post- means "after."
The prefix hypo- means
below Explanation Hypo- means "below" or "under." Hypoglycemia is low blood sugar.
A type of trial in which the verdict is decided by the judge is called
bench Explanation In a bench trial, a judge serves without a jury and rules on the law as well as on the facts.
The prefix ambi - means
both Explanation Ambi- means "both," as in ambidextrous, "able to use both hands."
All of the following calls will require the physician's personal attention except
calls from insurance companies. Explanation Generally, calls from insurance companies will not require the physician's personal attention.
A forty-four-year-old woman comes to the emergency room complaining of nausea, vomiting, and pain in the upper abdomen. She also appears to have mild jaundice. These symptoms are most characteristic of
choledocholithiasis. Explanation These symptoms are characteristic of choledocholithiasis, which is the presence of gallstones in the common bile duct. It is more common in women over forty years of age.
Preventing duplicate payment for the same service is known as
coordination of benefits. Explanation Coordination of benefits can prevent duplicate payment for the same service.
The suffix -ase means
enzyme. Explanation The suffix -ase means "enzyme," as in the word amylase, which refers to a class of digestive enzymes.
Bipolar disorder is characterized by
euphoric and depressed moods. Explanation Bipolar disorder is a condition in which a person alternates between periods of euphoric feelings and mania and periods of depression.
The primary purpose of a patient record-filing system is to
facilitate efficient document retrieval. Explanation The primary purpose of a patient record-filing system is to facilitate efficient document retrieval. All files should be able to be accessed quickly and economically, whether on paper or in an electronic format.
The majority of accidental poisonings occur at home to children under the age of _______ years.
five Explanation The majority of accidental poisonings occur at home to children under the age of five years.
An area of necrotic tissue that has been invaded by bacteria is known as
gangrene. Explanation Gangrene is necrosis, or death of tissue, usually as the result of ischemia, bacterial invasion, and subsequent putrefaction. Infarction is a localized area of necrosis in a tissue, caused by an interruption in the blood supply. Ischemia is a decreased supply of oxygenated blood to a body or part. Atresia is the absence of a normal body opening, duct, or canal. Inflammation is the nonspecific defense mechanism, characterized by heat, redness, swelling, and pain.
The place where transactions are first recorded is called the
general journal. charge journal. daysheet. daily log. All of these are correct. Explanation The general journal is also known as the daily log, daybook, daysheet, daily journal, and charge journal. This journal is where all transactions are first recorded.
Carbohydrate is stored in the liver as
glycogen. Explanation Glycogen is a polysaccharide that is the major carbohydrate stored in animal cells. It is formed of repeating units of glucose and is stored chiefly in the liver.
According to Erikson's stages of development, a four-year-old boy who is not allowed to initiate some tasks by himself will later show
guilt when initiating tasks. Explanation Erikson believed that at ages three to six years, the conflict is initiative versus guilt.
FICA taxes are paid
half by the employer and half by the employee. Explanation FICA stands for the Federal Insurance Contribution Act, which funds Social Security. The employee pays half and the employer pays the other half of these taxes. Taxes are based on the level of taxable earnings, the length of the payroll period, marital status, and the number of withholding allowances claimed.
The Blue Cross part of BCBS covers
hospital services. Explanation The Blue Cross part of the BCBS covers hospital services, home care services, and other institutional care. Blue Shield covers physician services, dental, vision, and other outpatient benefits.
Intentional torts
include assault, defamation, and invasion of privacy. Explanation Intentional torts include civil wrongs committed against a person or property, excluding breach of contract. Intentional torts include assault, battery, defamation of character, and invasion of privacy. Negligence is an unintentional tort.
A method of identifying and separating items to be filed into smaller subunits is called...
indexing. Explanation Indexing is an organized method of identifying and separating items to be filed into small subunits. Each unit is identified according to unit number. The key individual's unit, Unit 1, is the individual's last name. Unit 2 is the individual's first name. Unit 3 is the middle initial. Unit 4 is a title or special name such as Mrs. or Dr.
Privileged communication can include
information held confidential within a protected relationship, such as between patient and physician or between lawyer and client. Explanation Privileged communication is the communication of information that is confidential within a protected relationship, such as between a patient and his or her physician and between a client and his or her lawyer.
The combining form ren/o refers to the
kidney. Explanation Ren/o means "kidney," rect/o means "rectum," lapar/o means "abdomen," pector/o means "chest," and both cyst/o and vesic/o mean "urinary bladder."
Infected pregnant women can pass all of the following microorganisms to their babies during pregnancy or delivery except
malaria Explanation Infected pregnant women can pass the spirochetes of syphilis, HIV, and HBV to their babies during pregnancy or delivery.
Any infection or inflammation of the membranes covering the brain or spinal cord is called
meningitis Explanation Meningitis is inflammation of the meninges, the membranes covering the brain and spinal cord. Diphtheria affects the mucous membranes of the respiratory tract. Parotitis is mumps, the inflammation of one or both parotid glands. Infectious mononucleosis is an acute infectious disease that changes leukocytes. Myocarditis is an inflammation of the myocardium commonly caused by viruses, bacteria, fungi, or protozoa.
When using a computer, a list of commands or options that can be selected is called a...
menu. Explanation A menu is a list of commands or options that can be selected when using a computer. For example, the File menu of most word-processing programs includes the commands New File, Open File, Close File, and Save File.
Voucher checks are commonly used for
payroll. Explanation Voucher checks are frequently used for payroll checks since they allow additional information, such as deductions, to be supplied to the payee.
The abbreviation meaning "after meals" is
pc. Explanation "After meals" is abbreviated as pc, from the Latin phrase post cibum. The abbreviation pm (post meridiem) means "after noon," po (per os) means "by mouth," and prn (pro re nata) means "as needed." PS In this regard, ps is not an abbreviation
The word articular means
pertaining to a joint. Explanation Articulus and the combining form arthr/o both mean "joint." The suffix -al means "pertaining to." Another word for articular is arthral.
The study of drugs and their actions in the body is called
pharmacology. Explanation Pharmacology is the study of the origin, nature, chemistry, effects, and uses of drugs. Pharmacy is the art of compounding, preparing, dispensing, and properly using drugs. Pharmacognosy is the branch of pharmacology dealing with natural drugs. Posology is the study of the amount of a drug that is required to produce therapeutic effects. Pharmacodynamics is the study of the mechanisms of actions of drugs on living organisms.
A condition characterized by extra fingers or toes is called
polydactyly. Explanation Dactyl/o means "finger" or "toe." Polydactyly is the presence of extra fingers or toes. Polydipsia is excessive thirst. Polyphagia is excessive, uncontrolled eating. Polysomy is the presence of a chromosome in at least triplicate form in an otherwise diploid somatic cell. Polycoria is the condition of having more than one pupil in one eye.
The amount charged for a medical insurance policy is the
premium Explanation The amount charged for a medical insurance policy, in which the insurer agrees to provide certain benefits, is called the premium.
The process of checking transcribed materials for accuracy and clarity is called
proofreading. Explanation The process of checking transcribed materials for accuracy and clarity is referred to as proofreading. Proofreading business letters and transcribed documents helps to reduce the possibility of medication, legal, or information errors that could result in medical malpractice charges or problems with patient care.
The most common site for cancer incidence in males is the
prostate Explanation According to the American Cancer Society, the prostate is the most common site for cancer incidence in males in the United States each year. It is the third leading cause of cancer deaths.
A deficiency of vitamin C may result in
scurvy. Explanation Vitamin C deficiency may result in scurvy.
If a needlestick injury occurs, you should take all of the following actions except
sending the report to the local health department. Explanation If an injury occurs, you must take the following actions: Wash your hands, cover the injury, report and document the injury, and get the injury treated. It is not necessary to send the report to the local health department.
The flat surface of a microscope that holds the slide for viewing is called the
stage. Explanation The stage is the flat surface of a microscope that holds the slide for viewing. To aid viewing, light is projected through the slide when it is positioned on the stage.
To ensure the continuous accuracy of accounts, a medical assistant can
take a trial balance. Explanation Taking a trial balance is a method of checking the accuracy of accounts. It should be done once a month after all posting has been completed and before preparing the monthly statements. The purpose of a trial balance is to disclose any discrepancies between the journal and the ledger.
Total surgical scrub (hand washing) time should be approximately _______ minutes.
ten Explanation Total surgical handwashing time should be approximately ten minutes.
Res ipsa loquitur means
the matter speaks for itself. Explanation Res ipsa loquitur is a Latin phrase that means "the matter speaks for itself." It is also known as the doctrine of common law. This doctrine is usually applied when the physician clearly could have prevented a negligent act, such as leaving foreign bodies (e.g., instruments) inside a patient's body during surgery, damaging healthy tissue during an operation, burning or otherwise unnecessarily injuring the patient while the patient is under anesthesia, or causing an infection by using unsterilized instruments.
The shin bone is also called the
tibia. Explanation The tibia is another name for the shin bone.
To maximize communication with children, all of the following guidelines are good practices except
to work directly with their parents. Explanation To maximize communication with children, you must work directly with them, rather than communicate through parents.
The fee an individual physician most frequently charges for a service is called the
usual fee. Explanation The usual fee is what an individual physician most frequently charges for a service to private patients. The customary fee is a range of fees charged by most physicians in the community for a particular service. For example, the range of fees for a checkup could be $40 to $50 in a community. The prevailing charges are the fees most frequently charged in an area. For example, for a checkup, fees could range from $40 to $50; however, upon closer investigation an insurance company could learn that ten physicians in the community charge $45, three charge $40, one charges $42, and four charge $50.
The medical assistant's most effective means of preventing the spread of infection from one patient to another is to
wash one's hands after each patient. Explanation Before and after each patient is examined or treated, the medical assistant should use the correct technique to wash his or her hands. Hand washing is the most effective method to prevent the spread of infection from one person to another.
