Cardiorespiratory physiotherapy puts you closer to life-threatening events than almost any other area — often during exercise, when you are the clinician in the room. The CPTE tests whether you can distinguish an expected exertional response from a red flag that means stop, and whether you know which presentations are emergencies. This is the cardio-resp companion to MSK Red Flags and Neurological Red Flags.
(The PCE and CPTE are the same national exam — CAPR's Physiotherapy Competency Examination — so this applies whichever term you searched.)
The six presentations that matter
1. Acute coronary syndrome — emergency
Chest pain or pressure/tightness — classically central, possibly radiating to the arm, jaw, or back — with diaphoresis, shortness of breath, or nausea is a cardiac event until excluded. Be alert that women, older adults, and people with diabetes often present atypically (fatigue, breathlessness, or epigastric discomfort rather than crushing chest pain). New or exertional chest pain is an emergency; you stop activity and activate emergency services.
2. Pulmonary embolism — emergency
Sudden pleuritic (worse-with-breathing) chest pain, unexplained breathlessness, and tachycardia — especially with signs of a deep vein thrombosis (unilateral leg swelling, warmth, calf tenderness) or a risk profile (recent surgery, immobility, long travel, malignancy, pregnancy) — should raise PE. This is exactly the scenario where early mobilization protocols and DVT/PE screening intersect, and it is an emergency presentation.
3. Aortic dissection / abdominal aortic aneurysm — emergency
Sudden, severe tearing or ripping pain radiating to the back is the classic dissection description. A pulsatile abdominal mass with back or flank pain suggests an abdominal aortic aneurysm. Either is a catastrophic vascular emergency — not a musculoskeletal back pain to mobilize.
4. Exertional warning signs — stop exercise now
During any exercise or cardiac-rehab session, certain signs mean stop immediately: new chest pain or pressure, light-headedness or near-syncope, a drop in systolic blood pressure as workload increases (exertional hypotension), an abnormal/dangerous heart rhythm, or disproportionate breathlessness. A falling systolic pressure against rising demand can signal left-ventricular dysfunction or ischemia — a red flag, not fatigue. (For the full exercise-termination criteria, see the Cardiorespiratory Study Guide.)
5. Hemoptysis — urgent
Coughing up blood is never a routine finding. Depending on the volume and context it can point to malignancy, tuberculosis (a live consideration for many internationally educated clinicians and their patients), bronchiectasis, or pulmonary embolism. New or unexplained hemoptysis needs prompt medical work-up.
6. Acute pulmonary edema / decompensated heart failure — emergency to urgent
Worsening breathlessness at rest, the inability to lie flat (orthopnea), waking gasping for air at night (paroxysmal nocturnal dyspnea), rapid weight gain, and — in the acute setting — a cough producing pink, frothy sputum with widespread crackles signal fluid in the lungs. Acute pulmonary edema is an emergency; a gradual decompensation still needs urgent medical review before you progress exercise.
The decision framework — three speeds of action
- Emergency (act now / 911 / ED): suspected ACS, PE, aortic dissection/AAA, acute pulmonary edema, exertional syncope or chest pain.
- Urgent (same-day medical referral): new hemoptysis, a gradual heart-failure decompensation, a new exertional-hypotension pattern.
- Monitor and re-screen: stable, well-controlled cardiorespiratory disease — but re-check vitals and symptoms every session and hold to the stop criteria.
How cardio-resp red flags appear on the CPTE
Expect a scenario where an expected exertional response (rising HR, some breathlessness, warm and flushed) is deliberately placed next to a red flag (falling BP, chest pain, near-syncope) to see whether you can tell them apart and state the correct action. The Oral wants an explicit screen: name what you're excluding, state your stop criteria, and give the urgency.
Common mistakes IEPTs make
- Reassuring atypical cardiac presentations. Fatigue and breathlessness can be the anginal equivalent, especially in women and people with diabetes.
- Reading exertional hypotension as deconditioning. A systolic pressure that falls as workload climbs is a stop-and-refer sign.
- Treating a "muscular" back pain that is actually vascular. Sudden tearing pain to the back with the wrong risk profile is not for the plinth.
- Forgetting DVT screening before mobilizing the post-operative or immobile patient.
What to do this week
Pick one cardiac case and one respiratory case from your question bank. For each, list out loud the pre-activity screen, your during-exercise stop criteria, and the single red flag that would end the session — in 60 seconds. Repeat weekly.
Keep practising
The CAPR-aligned PhysioExamPrep bank drills red-flag recognition alongside full cardiorespiratory reasoning — ABGs, ECG, exercise testing, and stop criteria. Start practising for free → — a daily allowance of questions, no card required. Premium (a one-time CA$49, valid for two years) unlocks unlimited practice, Written-section mock exams, and Oral-section case practice.