One of the most underappreciated aspects of CCS is that the same chief complaint requires a fundamentally different approach depending on the clinical setting. Chest pain in the ER demands immediate stabilization and rule-out of life threats. Chest pain in the clinic calls for a thorough history, risk stratification, and possible referral. Chest pain on the hospital floor in a post-surgical patient triggers a targeted workup for PE, MI, or post-operative complications.
This article maps out how to adapt your approach for the most common CCS chief complaints across all three main settings: ER, Clinic, and Floor.
The Setting-First Decision Model
Before thinking about the chief complaint, the setting tells you three things:
1. Urgency level:
• ER = Assume worst-case until proven otherwise
• Clinic = Methodical, comprehensive workup
• Floor = Context-dependent (why are they admitted? What changed?)
2. Available resources:
• ER = Stat labs, portable imaging, resuscitation equipment
• Clinic = Basic labs, referral for imaging, outpatient prescriptions
• Floor = Stat labs and imaging available, but context of hospitalization drives workup
3. Disposition expectations:
• ER = Admit, discharge, or transfer
• Clinic = Treat and follow-up, refer, or send to ER
• Floor = Continue management, escalate to ICU, or discharge
Chest Pain by Setting
ER: Chest Pain
Mindset: Rule out the killers first (MI, PE, dissection, pneumothorax, tamponade)
Opening orders: IV, monitor, EKG, troponin, CXR, aspirin (if ACS suspected)
Key actions: Serial troponins, advance clock for results, cardiology consult if ACS, CTPA if PE
Goal: Definitive diagnosis and stabilization within the case
Clinic: Chest Pain
Mindset: Risk stratify. Is this cardiac, GI, musculoskeletal, or anxiety?
Opening orders: Complete physical exam, EKG, basic labs
Key actions: If low-risk and reproducible with palpation → musculoskeletal workup/treatment. If cardiac risk factors → stress test referral. If GI symptoms → PPI trial. If alarm features (exertional, radiating, diaphoresis) → send to ER.
Goal: Determine whether the patient needs emergent evaluation or can be worked up outpatient
Floor: Chest Pain
Mindset: New chest pain in a hospitalized patient = PE, MI, or procedure-related complication until proven otherwise
Opening orders: Stat EKG, troponin, CXR, D-dimer
Key actions: Compare to baseline EKG if available. If post-surgical → high suspicion for PE. If on anticoagulation hold → consider MI.
Goal: Identify and treat the acute cause, escalate to ICU if needed
Shortness of Breath by Setting
ER: SOB
Mindset: Life-threatening causes first (PE, tension pneumothorax, anaphylaxis, acute MI)
Opening orders: O2, pulse ox, IV, cardiac monitor, CXR, EKG, ABG, BNP, troponin, D-dimer
Key actions: Branch based on CXR findings. Pulmonary edema → CHF pathway. Infiltrate → pneumonia. Clear lungs → PE workup. Wheezing → asthma/COPD.
Goal: Stabilize, diagnose, and treat or admit
Clinic: SOB
Mindset: Chronic vs. acute? Progressive vs. episodic?
Opening orders: Complete physical exam, CXR, PFTs (if chronic), CBC, BNP
Key actions: Chronic progressive SOB → PFTs, echocardiogram, CT chest. Episodic → consider asthma (trial of inhaler, peak flow). New onset with risk factors → refer to ER for PE workup.
Goal: Determine etiology and initiate long-term management plan or refer for acute workup
Floor: SOB
Mindset: Acute decompensation. What changed?
Opening orders: Stat ABG, CXR, EKG, BNP, troponin
Key actions: Post-surgical → PE workup. Volume overload → furosemide. New infiltrate → hospital-acquired pneumonia. Flash pulmonary edema → consider MI.
Goal: Identify the trigger, treat, and reassess level of care (floor vs. ICU)
Fever by Setting
ER: Fever
Mindset: Sepsis until proven otherwise if vitals are abnormal
Opening orders: Blood cultures x 2 (before antibiotics), lactate, CBC, BMP, UA, CXR
Key actions: Source identification → targeted imaging and cultures. Start empiric antibiotics within 1 hour of recognition. Aggressive fluids if sepsis criteria met.
Goal: Identify source, start antibiotics, determine admit vs. discharge
Clinic: Fever
Mindset: Common things are common. URI, UTI, viral illness.
Opening orders: Focused physical exam, CBC, UA, CXR if pulmonary symptoms
Key actions: Uncomplicated UTI → outpatient antibiotics. URI → supportive care. Pneumonia without severe features → outpatient antibiotics. Red flags (AMS, hypotension, toxic appearance) → send to ER.
Goal: Treat outpatient if safe, send to ER if concerning
Floor: Fever
Mindset: Post-operative fever, hospital-acquired infection, drug fever, DVT
Opening orders: Blood cultures x 2, UA + urine culture, CXR, CBC, wound assessment
Key actions: Apply the 5 W's framework (Wind, Water, Wound, Walking, Wonder drugs). Time since admission/surgery narrows the differential.
Goal: Identify source, initiate targeted treatment, adjust antibiotics
Abdominal Pain by Setting
ER: Abdominal Pain
Mindset: Surgical emergency until proven otherwise
Opening orders: IV, NPO, pain management, urine pregnancy test (all women of childbearing age), CBC, BMP, LFTs, lipase, UA, lactate
Key actions: Imaging based on location (RUQ → ultrasound, RLQ → CT, diffuse → CT). Surgical consult if acute abdomen. Rule out ectopic pregnancy.
Goal: Identify surgical vs. medical cause, treat or admit
Clinic: Abdominal Pain
Mindset: Chronic vs. acute? Red flags present?
Opening orders: Complete physical exam, CBC, BMP, LFTs, lipase, UA
Key actions: Chronic → consider GERD, IBS, celiac, IBD (appropriate testing for each). Acute → assess severity; send to ER if concerning. Red flags: peritoneal signs, hemodynamic instability, intractable vomiting → ER referral.
Goal: Workup chronic causes or appropriately triage acute cases
Floor: Abdominal Pain
Mindset: Post-operative complication, medication side effect, new pathology
Opening orders: Focused abdominal exam, CBC, BMP, LFTs, lipase, lactate, abdominal X-ray
Key actions: Post-surgical → rule out ileus, anastomotic leak, abscess. New medication → consider side effect (C. diff from antibiotics). Free air → surgical emergency.
Goal: Identify cause, involve surgery if needed
Altered Mental Status by Setting
ER: AMS
Mindset: Reversible emergency until proven otherwise
Opening orders: Fingerstick glucose → D50 if low, thiamine, naloxone, IV, O2, monitor
Key actions: Broad workup (CBC, BMP, LFTs, ammonia, tox screen, UA, blood cultures, CT head). LP if meningitis suspected. EEG if seizure suspected.
Goal: Identify and reverse the cause. Stabilize and admit.
Clinic: AMS
Mindset: This patient should probably be in the ER
Opening orders: Focused neurological exam, fingerstick glucose
Key actions: If acute → call 911 or transfer to ER immediately. If subacute (gradual decline) → dementia workup (TSH, B12, RPR, CT head, medication review). Depression screening.
Goal: Acute AMS → ER transfer. Subacute → outpatient workup.
Floor: AMS
Mindset: Delirium. What is the trigger?
Opening orders: Focused neuro exam, fingerstick glucose, CBC, BMP, UA, medication review
Key actions: Most common cause in hospitalized elderly: infection (UTI), medications (anticholinergics, benzos, opioids), metabolic derangement. Treat the underlying cause. Avoid restraints. Low-dose haloperidol for severe agitation only. Reorient.
Goal: Identify and reverse the trigger for delirium.
Headache by Setting
ER: Headache
Mindset: Life-threatening causes: SAH, meningitis, intracranial mass, hypertensive emergency
Opening orders: CT head without contrast, CBC, BMP, vital signs
Key actions: Thunderclap headache → CT head + LP (if CT negative for SAH). Fever + headache → meningitis workup. Worst headache of life → SAH protocol. Focal deficits → consider stroke or mass.
Goal: Rule out emergencies, treat, and determine disposition
Clinic: Headache
Mindset: Primary vs. secondary headache. Red flags?
Opening orders: Complete physical exam, neurological exam
Key actions: Chronic recurring → migraine or tension-type (start treatment, education). Red flags (worst ever, fever, focal deficits, new in older patient, progressive) → imaging and/or ER referral. Trial of appropriate medication.
Goal: Classify headache type, initiate treatment plan, follow-up
Floor: Headache
Mindset: New headache in hospitalized patient is concerning
Opening orders: CT head, vital signs (check for hypertensive emergency), neurological exam
Key actions: Post-LP → conservative management (caffeine, hydration, blood patch if severe). Post-surgical → rule out ICH. Medication-related → review drug list. New neurological signs → urgent CT.
Goal: Rule out intracranial pathology, treat symptomatically
The Universal Adaptation Rules
Regardless of the specific chief complaint, these rules help you adapt between settings:
1. ER rule: Assume the worst, stabilize first, use stat orders, keep the patient until you have a diagnosis or a safe disposition plan.
2. Clinic rule: Be thorough but methodical, use the complete physical exam, order outpatient-appropriate workup, and know when to escalate to the ER.
3. Floor rule: Ask "what changed?" — the hospitalization context narrows your differential. Post-surgical patients have a different workup than medical patients.
4. Every setting: Always end with follow-up, counseling, and preventive care. These points are available regardless of setting.
This is the capstone article of our CCS approach series. Combined with the chief-complaint-specific guides, you now have a complete library for tackling any CCS case on Step 3.
Related Articles:
• Ultimate Guide to CCS Section of Step 3 (2026)
• CCS "First 60 Seconds" Algorithms for Every Setting
• CCS Chest Pain: Orders, Algorithms & Don't-Miss Diagnoses
• CCS Shortness of Breath: Complete Approach & Order Sets
• CCS Abdominal Pain: Step-by-Step Workup & Management
• CCS Altered Mental Status: First 60 Seconds to Disposition