CNA in a Hospital: Duties, Pay, Patient Ratios & How to Get Hired

What Does a CNA Do in a Hospital?

A hospital CNA (Certified Nursing Assistant) provides hands-on patient care under the supervision of Registered Nurses (RNs) and Licensed Practical Nurses (LPNs). Unlike nursing home CNAs who follow a predictable daily schedule with long-term residents, hospital CNAs work in fast-paced, high-acuity environments where patient needs change rapidly.

The core responsibilities of a CNA in a hospital include:

• Vital signs monitoring — blood pressure, temperature, pulse, oxygen saturation every shift (or more frequently for ICU patients)
• Activities of Daily Living (ADLs) — bathing, grooming, dressing, oral hygiene, and toileting assistance
• Ambulation and repositioning — helping patients walk, turn every 2 hours to prevent pressure sores, and transfer safely
• Intake and output (I&O) tracking — documenting fluids consumed and urine/drainage output
• Specimen collection — urine, stool samples, and blood draws (if trained as a phlebotomist)
• Patient observation — reporting changes in skin condition, mental status, pain level, or behavior to the RN immediately
• Equipment setup — preparing beds, monitoring equipment, and supplying rooms
• Patient communication — answering call lights, providing emotional support, and relaying patient concerns to the care team

Hospital CNAs also document all care activities in the Electronic Health Record (EHR) system — typically Epic or Cerner — making accurate charting a critical job skill.

CNA-to-Patient Ratios in Hospitals

The CNA-to-patient ratio determines how many patients each nursing assistant is responsible for during a shift. This is one of the most important factors affecting both patient safety and CNA job satisfaction — and it varies dramatically by unit and state.

Typical hospital CNA ratios by unit

State staffing laws

As of 2026, California is the only state with legally mandated CNA-to-patient ratios in hospitals (1:2 in ICU, 1:6 in Med-Surg). Other states rely on hospital policies, union contracts, or nurse-to-patient ratio laws that indirectly affect CNA staffing. Check your state's Department of Health for current requirements.

For context: how many patients can a CNA have legally depends on your state and facility type. In California's nursing homes, the minimum is 3.5 hours of nursing aide care per resident per day — which translates to roughly 1:10 during a shift. Hospital minimums are less regulated outside California.

Can a CNA Administer Medication in a Hospital?

Standard CNAs cannot administer medication in a hospital. This is a legally protected nursing function reserved for RNs, LPNs, and physicians. A CNA who administers medication — even something as routine as an aspirin — is practicing outside their scope and risks immediate termination and license revocation.

However, there are two important exceptions:

1. Medication Aide / Medication Technician (CNA Med Tech)

Some states allow CNAs to earn an additional certification as a Medication Aide (CMA) or CNA Med Tech. With this certification, a CNA can administer oral, topical, and eye/ear drop medications only in specific settings (typically nursing homes and assisted living — NOT acute care hospitals) under RN supervision.

States that allow CNA medication aide roles include: Florida, Texas, Virginia, Colorado, Missouri, and others. Each state has different requirements — typically a 40–80 hour course plus a state exam.

2. Patient Care Technicians (PCTs) in the ED

Emergency Departments sometimes employ Patient Care Technicians (PCTs) — CNAs with expanded training who can start IVs, draw blood, and perform EKGs. PCTs do not administer IV medications, but they work closely with RNs who do.

If a patient asks you to give them their medication or hand them pills from their own supply — refuse politely and alert the nurse immediately. This is the correct and legally required response in every hospital setting.

Hospital CNA Salary: What to Expect

Hospital CNAs consistently out-earn their nursing home counterparts due to higher acuity demands and the competitive labor market for healthcare workers.

Night shifts and weekend shifts add $1.50–$3.00/hour in shift differentials at most hospitals. Union hospitals (common in California, New York, Massachusetts) pay even more — union CNAs average $24–$31/hour in high-cost-of-living states.

Career advancement from hospital CNA

Hospital experience is the best foundation for healthcare advancement. Common paths:

• LPN — 12–18 month program, average $50,000/year
• PCT / ED Tech — add phlebotomy, EKG, IV start certifications
• RN (ADN or BSN) — many hospitals offer tuition reimbursement for CNA-to-RN bridge programs
• Surgical Tech — 18-month certification, $55,000+ average

How to Get Hired as a Hospital CNA

Hospital CNAs are in demand, but competition is real — especially for ICU and ED positions. Use these strategies to stand out:

1. Get your state CNA license first

All hospitals require an active CNA certification before hiring. You must pass your state's written and skills exams through an accredited program. Most CNA training programs near you can be completed in 4–12 weeks — full-time accelerated or part-time evening/weekend options are common.

2. Target hospitals with CNA internship programs

Many large hospital systems (HCA Healthcare, CommonSpirit, Kaiser Permanente, Ascension) run new graduate CNA programs that provide 4–6 weeks of unit-specific orientation with a mentor CNA. These programs are ideal for new CNAs with no hospital experience.

3. Start in Med-Surg, advance to specialty units

ICU and ED positions rarely go to brand-new CNAs. Spend 6–12 months on a Med-Surg or Telemetry unit building your speed, charting skills, and nurse relationships — then internally transfer to your target unit. Internal transfers are far easier than external applications for specialty positions.

4. List your CNA clinicals prominently

Your CNA clinicals (the hands-on portion of your CNA training) count as hospital experience on your resume — especially if you completed them in a hospital rather than a nursing home. List the facility name, unit, and total hours completed.

5. Highlight EHR experience

Any experience with Epic, Cerner, or Meditech in your clinical training is highly valued. Mention it specifically in your application — many hospital recruiters filter by this skill.