CNA Practice Exam Comprehensive Review
Professionalism, Legal Standards, and Ethics in Nursing Assistant Practice
Maintaining professional standards is critical for a Certified Nursing Assistant (CNA). Professionalism includes arriving to work on time or early, arriving well-groomed in a clean uniform, and maintaining personal health through diet, exercise, and sleep. A CNA must never work single-handedly if a task requires assistance, nor should they share intimate or personal life details with residents. In the healthcare hierarchy, a CNA must recognize the limits of their scope of practice; for instance, if a nurse asks a CNA to give a medication like ibuprofen to a resident such as Mr. Smith, the CNA must politely refuse, as medication administration is outside their legal standard of care. Legal standards also include the Right to Privacy and HIPAA compliance. Overhearing colleagues discuss resident care in an elevator is a violation of patient confidentiality. Similarly, answering a phone call from a friend of a resident, such as Mr. Long, and disclosing that his condition is declining without his consent is a HIPAA violation.
Legal terminology defines several types of misconduct. Negligence occurs when a CNA fails to provide necessary care, such as leaving a patient in soiled briefs for an entire shift or forgetting to lock bed wheels, leading to an injury. Malpractice is a specialized form of negligence in a professional setting. Assault is the threat of harm, while battery is the actual physical contact without consent, such as performing a procedure after a resident has refused it. Emotional abuse includes threatening to withhold treatment or making fun of a resident. False imprisonment involves restricting a resident's movement without legal authority. If a CNA makes a false report about a colleague accepting gifts, this is considered defamation. When documenting care, errors must be corrected legally by drawing a single line through the notation, writing the word "error," initialing it, and writing the correct information next to it; erasing or using liquid paper is prohibited.
Safety Protocols, Infection Control, and Environmental Management
Infection control starts with handwashing, which is the most effective way to prevent the spread of germs. A CNA should wash hands before and after glove use and whenever they might have come into contact with blood or bodily fluids. Standard precautions dictate that Personal Protective Equipment (PPE) like gloves, gowns, and masks must be used when there is a risk of contact with bodily fluids. The correct order for putting on PPE is Gown, then Mask, then Gloves (). Droplet precautions require the patient to be in a private room and the provider to wear a mask. For airborne pathogens, special masks called High-Efficiency Particulate Arrestance (HEPA) masks are required alongside negative pressure rooms. Contaminated bags containing bodily fluids should be removed using a specific technique: one provider removes and closes the bag while a second provider cuffs a clean bag labeled "contaminated" to receive it. Linens must always be carried away from the uniform and never placed on the floor; soiled portions should be folded inward.
Environmental safety involves constant vigilance. If a fire is discovered in an unoccupied room, the first step is to activate the fire alarm. Before entering any resident’s room, a CNA should knock, check the care plan, and ensure supplies are stocked. Beds should always be kept in a low position with wheels locked when stationary to prevent falls. When making an unoccupied bed, the final steps are to lower the bed, ensure the call signal is within reach, and wash hands. In the event of a power failure, life-sustaining equipment like a mechanical ventilator for a patient like Mr. Song must be plugged into emergency red outlets, or a manual ventilation device like an Ambu bag must be used. For spills, such as urine or blood, surfaces must be cleaned immediately to prevent transmission. Medical asepsis refers to practices that reduce the number and growth of pathogenic microorganisms, whereas a sterile environment is completely free from all living microorganisms.
Fundamentals of Patient Hygiene and Skin Integrity
Providing a bed bath requires attention to privacy and safety. The CNA must close the curtain and ensure the water temperature is between . Washing should always proceed from clean areas to dirty areas. Scrubbing must not be vigorous to protect fragile skin. For perineal care, a CNA must wipe from front to back () to prevent infection. When cleaning dentures, a cloth or paper towel should be placed in the sink to prevent breakage, and dentures should be stored in a glass. For an unconscious resident, oral care is performed using a soft toothette. Shaving a resident requires shaving cream to soften hair and strokes in the direction of hair growth. If a resident with diabetes needs toenails clipped, the CNA must pay special attention, as foot care is vital for diabetics.
Pressure ulcers (decubitus ulcers) are a significant risk for immobile patients. Prevention involves keeping skin clean and dry and turning the resident at least once every . Stage ulcers involve reddened skin that does not blanch. Stage ulcers involve partial-thickness skin loss, which may look like a blister or a shallow pink ulcer. Stage ulcers are severe, with an open wound and visible bone. Massaging red areas is contraindicated as it can cause further damage. If a CNA noticed a foul smell from a resident's wound, they must inform the nurse immediately. For minor injuries, cold packs are used to decrease swelling and stop pain, while heat or massage is avoided on red or inflamed skin.
Mobility, Body Mechanics, and Resident Transfers
Safe patient handling requires proper body mechanics and equipment. A gait belt is used for transfers; the CNA should stay close to the person and stand on the resident's weak side during ambulation. When transferring a resident with one-sided weakness (common after a CVA/stroke) from a bed to a wheelchair, the wheelchair should be positioned at the head of the bed on the resident's strong side. If a resident begins to fall while walking, the CNA should get behind them and slowly guide them to the ground. Fractured hips are the most common injury resulting from falls. Mechanical lifts require training, a lift in good condition, and a sling appropriate for the person's size; at least two staff members are typically required for safety.
Specific positions are used for different needs. The Prone position involves lying on the abdomen with the head turned to one side. The Lateral position is side-lying with pillows for support under the head, top arm, and top leg. The Fowler’s position (sitting up) is used to assist patients with deep breathing or when they are on a ventilator. The Sims' and Supine (flat on back) positions are also common. When residents use assistive devices for mobility or elimination, such as a portable commode for those who can pivot but cannot reach the bathroom, the CNA must ensure the devices are safe and available. Anti-embolism stockings must be applied without wrinkles to maintain proper circulation.
Vital Signs, Physical Assessment, and Documentation Standards
Recording accurate data is essential for the care team. Objective data are signs that can be directly observed or measured, such as a respiration rate of or a blood pressure reading. Subjective data are what the patient reports, like nausea or a pain scale of . Vital signs include temperature (Oral, Rectal, or Axilla), pulse, respiration, and blood pressure. Diastolic blood pressure represents the pressure in the arteries when the heart rests. When taking blood pressure, the resident should be sitting with their feet flat on the floor. If a CNA needs to take an oral temperature and the resident has just consumed a cold drink, they must wait approximately .
Intake and Output (I&O) must be recorded and totaled, usually at the end of each shift or every . Fluid measurements are often converted; if a patient has a urinary output of , this would be converted to cubic centimeters () for the medical record (, so ). Urinary drainage bags must always be positioned lower than the bladder to prevent backflow and infection. Condom catheters must be connected to a drainage bag and secured properly, though standard tape should never be used on the skin. If a resident is suffering from urinary retention (inability to urinate), it must be reported. Vomitus must also be measured, reported, and recorded before disposal. Flow sheets are the specific document used to record frequent activities and ADLs, such as a resident's ability to bathe independently.
Cognitive Impairment, Mental Health, and Developmental Disabilities
Caring for residents with cognitive impairments like Alzheimer’s disease requires specific techniques. Alzheimer's is characterized by memory loss (Mild), the need for help with multi-step tasks like dressing (Moderate), and the loss of coherent communication (Severe). To reduce confusion, CNAs should keep stimulation levels to a minimum. Sundowning refers to increased confusion and agitation in the evening. For residents prone to wandering, safety measures include bed alarms, door alarms, and picture signs (e.g., "STOP"). When communicating with someone with memory loss, it is best to sit beside them and listen. For patients with aphasia (difficulty speaking), using a picture or letter board and giving extra time to respond are effective strategies.
Depression is a common mental health issue in residents, especially those who lose mobility. Signs include sadness and despair. If a resident says they are depressed, the CNA should ask, "Can you tell me more about this? Would you like to speak with someone about this?" Suicide risk factors include alcohol/drug abuse, prior attempts, and stressful life events like the death of a loved one. Agitated patients should be spoken to in a calm, clear manner to determine the cause of their distress. When discussing sensitive topics like bowel movements, the CNA must ensure privacy and use a professional tone. Today, the preferred terminology for residents with developmental disabilities is "intellectually disabled."
Specialized Residential Care and Chronic Condition Management
CNAs work in diverse settings, including hospitals, rehabilitative care, and long-term residential nursing care (like skilled nursing facilities). Assisted living residences provide minimal help with ADLs. In these settings, CNAs must manage various chronic conditions. Gastroesophageal reflux disease (GERD) is managed by losing weight, avoiding spicy foods or smoking, and not lying down for after meals. Diabetes management includes monitoring diet; if a CNA sees a diabetic resident eating high-sugar items, they should encourage better choices and inform the nurse. Hypoxia (lack of oxygen) is signaled by a rapid pulse, cyanosis (blueness), and dyspnea (difficulty breathing). Oxygen therapy may be delivered via a face mask, which must be removed for eating.
Restorative care focuses on helping residents reach their highest level of functioning and independence, often through range of motion (ROM) exercises which prevent contractures (shortening of muscle tissue). For stroke victims, specialized therapists like Occupational Therapists help with assistive devices for eating, while Speech Therapists help with swallow and communication difficulties. In the admission process, the CNA's role is to make the resident feel welcome and prepare their room, while signing formal papers is a administrative task. If a resident insists on leaving the facility against medical advice (AMA), the CNA must report this to the nurse immediately.
End-of-Life Care, Hospice, and the Stages of Bereavement
Hospice care is dedicated to meeting the emotional, spiritual, and physical needs of a dying person rather than seeking a cure. The expected five stages of grief, as defined by the care standards, are Denial, Anger, Bargaining, Depression, and finally Acceptance (). When a patient is actively dying, vital signs are no longer recorded, and the focus shifts to comfort measures for symptoms like irregular/shallow breathing, fever, or chills. The most important member of the care plan meeting at any stage is the patient.
Supporting a resident’s religious and cultural beliefs is an essential CNA duty. This includes providing privacy for prayer or finding a religious counselor if the CNA is uncomfortable praying with the resident. If a resident's culture has specific post-mortem requirements, such as the wife of a deceased resident requesting the body not be left alone, the CNA must notify the nurse to facilitate the request. A Healthcare Proxy (also known as a Durable Power of Attorney for healthcare) is the person designated to make medical decisions if the resident is unable. A Do Not Resuscitate (DNR) order reflects the resident's wish that no lifesaving measures be taken if they stop breathing. CNAs must always treat residents with dignity and respect, regardless of their cultural background or end-of-life choices.