# Cardiac Rehabilitation and Secondary Prevention

> Cardiac rehabilitation for NEET-SS Cardiology: phases I to IV, core components, exercise prescription, mortality evidence and Indian delivery models.

- Canonical URL: https://prepelephant.com/topics/neet-ss/cardiology/cardiac-rehabilitation-secondary-prevention
- Exam / course: NEET-SS · Subject: Cardiology
- Publisher: PrepElephant (https://prepelephant.com) — Prepared and reviewed by the PrepElephant Academic Review Team
- First published: 2026-10-02
- Last updated: 2026-10-02
- How to cite: "Cardiac Rehabilitation and Secondary Prevention", PrepElephant, https://prepelephant.com/topics/neet-ss/cardiology/cardiac-rehabilitation-secondary-prevention

## Direct answer

Phase one begins at the bedside, within 24-48 hours of the infarct, and the programme runs from there: cardiac rehabilitation is a structured, multidisciplinary secondary-prevention intervention combining prescribed exercise training, education, risk-factor modification, psychosocial support and medication optimisation — the four pillars of heart-failure therapy, antiplatelets, statins and vaccination included. The evidence is old and solid: the 1980s meta-analyses of post-MI exercise programmes (O'Connor, Oldridge) showed reductions in total and cardiovascular mortality of roughly 20-25 per cent, and HF-ACTION demonstrated safety and modest benefit across HFrEF. Indications cover post-ACS, post-PCI and CABG, valve surgery, stable angina and heart failure; contraindications to exercise training are unstable angina, decompensated heart failure, uncontrolled arrhythmia, severe aortic stenosis and acute myocarditis or pericarditis. The conventional outpatient structure delivers about 36 supervised sessions over 12 weeks.

## What you must remember

- **Phases:** I inpatient mobilisation and education; II supervised outpatient — conventionally 36 sessions across 12 weeks; III and IV community or home maintenance, lifelong.
- **Mortality evidence:** exercise-based rehabilitation after MI reduced total and cardiovascular mortality by roughly 20-25 per cent in the landmark meta-analyses — a benefit comparable to beta-blockade after MI.
- **HF-ACTION:** supervised exercise training in chronic HFrEF was safe, improved fitness, and showed a modest reduction in the adjusted composite of all-cause mortality and hospitalisation.
- **Exercise prescription (FITT):** Frequency 3-5 days/week, Intensity moderate — 40-80 per cent of heart-rate reserve or Borg 12-14, Time 20-45 minutes, Type aerobic plus twice-weekly resistance; high-intensity intervals are an alternative in selected patients.
- **Risk stratification before training:** low-risk patients train unsupervised early; those with low ejection fraction, ischaemia at low workload or ventricular arrhythmia train with ECG monitoring.
- **Absolute contraindications:** unstable angina, decompensated heart failure, uncontrolled tachyarrhythmia, severe aortic stenosis, acute myocarditis or pericarditis, and unresolved aortic dissection.
- **Core deliverables:** smoking cessation, LDL control, blood pressure and diabetes targets, cardiac psychology input (depression screening with PHQ-9), and return-to-work planning.
- **Indian reality:** structured programmes are scarce and rarely reimbursed; home-based models, tele-rehabilitation and yoga-based protocols studied in Indian cohorts offer pragmatic substitutes — with weaker evidence than supervised centre-based rehabilitation.

## Prescribing exercise after an anterior MI

A 55-year-old teacher, eight days after an anterior NSTEMI treated with a drug-eluting stent, EF 40 per cent, joins the programme. First, risk-stratify: a submaximal symptom-limited test or 6-minute walk establishes baseline fitness and unmasks ischaemia or arrhythmia; with EF 40 and a negative review, he sits in the moderate-risk band — supervised training with telemetry in the initial weeks. The prescription follows FITT: five days a week, brisk walking at 40-60 per cent of heart-rate reserve (teach the talk test as the bedside proxy), 30 minutes building from 10-minute bouts, plus resistance bands twice weekly for the major groups.

Alongside the exercise run the non-negotiables: dual antiplatelet adherence, high-intensity statin, referral for smoking cessation if relevant, salt and diet counselling, and a PHQ-9 — post-event depression predicts non-adherence and dropout. At 12 weeks he retests, and the conversation shifts to maintenance: a home programme, a walking group, periodic review. The examinable point is that rehabilitation is a prescription with dose, frequency and follow-up — not an advice leaflet.

## How the exam frames it

Questions cluster on definitions and thresholds: the phases and their settings, the 36-session convention, the contraindication list, and the mortality numbers. A second cluster is practical: which patient needs monitored exercise (low EF, ischaemia at low workload, arrhythmia), and when a post-CABG patient returns to driving or sex — conventionally when he can climb two flights of stairs without symptoms, a fact patients rarely volunteer and examiners enjoy. The Indian framing deserves the final word: with rehabilitation centres confined to metros and costs out of pocket, the candidate who proposes a realistic home-based progression — walking prescription, weekly tele-review, family involvement — answers like a clinician rather than a textbook.

## Frequently asked questions

### What are the phases of cardiac rehabilitation?

Phase I inpatient, phase II supervised outpatient (typically 36 sessions over 12 weeks), and phases III-IV long-term community or home maintenance.

### What mortality benefit does exercise-based rehabilitation confer after MI?

The landmark meta-analyses showed roughly 20-25 per cent reductions in total and cardiovascular mortality in post-infarction patients.

### What are the absolute contraindications to exercise training?

Unstable angina, decompensated heart failure, uncontrolled arrhythmia, severe aortic stenosis, acute myocarditis or pericarditis, and unresolved dissection.

### How is exercise intensity prescribed?

Moderate intensity at 40-80 per cent of heart-rate reserve or Borg 12-14, starting conservatively and progressing — adjusted for risk stratification and medications.

### What did HF-ACTION show about exercise in heart failure?

Supervised training was safe in HFrEF, improved functional capacity, and modestly reduced the adjusted composite of mortality and hospitalisation.