RRB Paramedical ECG Technician Syllabus

The RRB Paramedical exam for the post of ECG Technician is a single-stage Computer-Based Test of 100 marks in 90 minutes. The 70-mark Professional Ability section tests your knowledge of cardiac physiology, ECG interpretation, cardiac investigations, and patient care. The remaining 30 marks cover General Science, General Awareness, and basic Arithmetic and Reasoning. The ECG Technician role in Indian Railways involves performing electrocardiograms, assisting in cardiac investigations, and supporting the cardiology department in railway hospitals.

Professional Ability Syllabus for ECG Technician (70 Marks)

All 70 marks in Professional Ability are drawn from your Diploma or B.Sc Cardiac / ECG Technology curriculum. The following subject-wise breakdown covers the major topics from which questions are asked:

Anatomy and Physiology of the Cardiovascular System

This is the most fundamental topic for an ECG Technician. You must have a thorough understanding of the structure of the heart: chambers (atria and ventricles), valves (mitral, tricuspid, aortic, pulmonary), and great vessels (aorta, pulmonary artery, vena cava). The cardiac conduction system is central to ECG interpretation, so know every part in detail: SA node (pacemaker of the heart), AV node, Bundle of His, right and left bundle branches, and Purkinje fibres. Also cover cardiac cycle, stroke volume, cardiac output, and blood pressure regulation. The coronary arteries and their territories of supply (LAD, LCx, RCA) are important for understanding myocardial infarction patterns.

Basics of ECG and Lead System

A strong understanding of the 12-lead ECG system is the technical core of this post. Know the standard limb leads (I, II, III), augmented leads (aVR, aVL, aVF), and precordial (chest) leads (V1 to V6). Understand electrode placement for each lead, what each lead "looks at" in the heart, and why correct placement is essential for accurate recording. Know the concepts of depolarisation, repolarisation, isoelectric line, and how the ECG waveform is generated.

ECG Waveform Analysis and Normal Values

Every ECG Technician must know the normal ECG waveform components and their significance:

•        P wave represents atrial depolarisation. Normal duration: less than 0.12 seconds; normal amplitude: less than 2.5 mm.

•        PR interval represents conduction from SA node to ventricles. Normal duration: 0.12 to 0.20 seconds.

•        QRS complex represents ventricular depolarisation. Normal duration: less than 0.12 seconds.

•        ST segment represents early ventricular repolarisation. Should be isoelectric (flat) in normal ECG.

•        T wave represents ventricular repolarisation. Normally upright in most leads.

•        QT interval from start of QRS to end of T wave. Important for assessing risk of arrhythmias.

•        Heart rate calculation from ECG: count R-R intervals over 6-second strip and multiply by 10, or use the 300 method.

ECG Interpretation: Arrhythmias and Rhythm Disorders

This topic carries high weightage in the Professional Ability section. Learn to identify the following:

•        Normal Sinus Rhythm and its defining characteristics.

•        Sinus Bradycardia and Sinus Tachycardia causes, ECG features, and clinical significance.

•        Atrial Fibrillation (AF) irregularly irregular rhythm, absent P waves, wavy baseline.

•        Atrial Flutter sawtooth P waves (flutter waves), typically at 300 bpm with variable block.

•        Supraventricular Tachycardia (SVT) narrow complex tachycardia with P waves before or after QRS.

•        Ventricular Tachycardia (VT) wide complex tachycardia, life-threatening, immediate action required.

•        Ventricular Fibrillation (VF) chaotic rhythm, no organised waveforms, a cardiac emergency.

•        Heart Blocks: First-degree (prolonged PR), Second-degree Mobitz I (Wenckebach) and Mobitz II, Complete (Third-degree) heart block.

•        Bundle Branch Blocks: RBBB (rSR pattern in V1) and LBBB (broad notched R in V5, V6).

•        Pre-excitation: Wolff-Parkinson-White (WPW) syndrome — short PR, delta wave.

Myocardial Infarction (MI) on ECG

Recognising ST-elevation MI (STEMI) and Non-STEMI patterns on ECG is a critical skill. Know the four stages of MI on ECG: hyperacute T waves, ST elevation, pathological Q waves, and T-wave inversion. Know which leads reflect which wall of the heart: anterior (V1–V4), inferior (II, III, aVF), lateral (I, aVL, V5–V6), and posterior (reciprocal changes in V1–V2). Understand the concept of reciprocal changes in the opposite leads.

Holter Monitoring and Exercise Stress Testing

Holter monitoring is 24 to 48-hour continuous ECG recording used to detect transient arrhythmias and ischaemic changes not seen on a resting ECG. Know the indications (palpitations, unexplained syncope, suspected paroxysmal AF), patient instructions during recording, and how to analyse Holter reports. Exercise Stress Test (Treadmill Test / TMT) is used to detect exercise-induced ischaemia. Know the Bruce Protocol stages, indications, absolute and relative contraindications, ECG changes that indicate a positive test (1 mm horizontal or downsloping ST depression), and criteria for terminating the test.

Echocardiography: Basic Awareness

An ECG Technician in a railway hospital setting needs a basic understanding of echocardiography: its principle (use of ultrasound), types (2D, M-mode, Doppler, colour Doppler), what echocardiography measures (ejection fraction, wall motion, valve function, chamber size), and when it is ordered. Detailed operation of the echo machine is not required.

Cardiac Medications: Awareness for the Technician

Know the major classes of cardiac drugs commonly used in patients you encounter: anti-arrhythmics (Amiodarone, Lignocaine, Adenosine), anti-anginals (nitrates, beta-blockers), anti-hypertensives, anti-platelet agents (Aspirin, Clopidogrel), and anticoagulants (Heparin, Warfarin). Know their common side effects, especially those that affect the ECG, such as QT prolongation with Amiodarone.

Basic Life Support (BLS) and Emergency Response

An ECG Technician must be certified and competent in Basic Life Support (BLS) protocols: Chain of Survival, correct technique for chest compressions (30:2 ratio, 100–120 compressions/minute, depth of 5–6 cm), use of an AED (Automated External Defibrillator), and recognition of shockable (VF, pulseless VT) versus non-shockable rhythms (PEA, asystole).

Patient Care and ECG Procedure

Questions on patient preparation for ECG recording are common: skin preparation, electrode placement, types of electrodes (disposable, reusable), sources of artefact (patient movement, muscle tremors, poor skin contact, AC interference), how to eliminate artefacts, and ECG paper speed (25 mm/sec standard in India) and calibration (1 mV = 10 mm deflection).

General Aptitude Syllabus (30 Marks)

Preparation Tips for ECG Technician

•        Master the 12-lead ECG system and lead placement first — without this foundation, arrhythmia interpretation is impossible.

•        Study arrhythmias systematically using real ECG tracings from a textbook or YouTube. Visual learning is far more effective than reading descriptions alone.

•        Make a one-page cheat sheet of normal ECG values (PR interval, QRS duration, QT interval, R-R interval) and revise it daily.

•        Learn MI patterns wall-by-wall (anterior, inferior, lateral, posterior) rather than memorising individual lead combinations in isolation.

•        Know BLS protocol step-by-step as this is directly tested in paramedical exams and is a core professional competency.

•        Do not neglect the 30-mark General Aptitude section — these are the fastest marks to score in the paper with basic preparation.

Frequently Asked Questions (FAQs)

What does an ECG Technician do in Indian Railways?

They perform 12-lead ECG recordings, Holter monitoring, assist in stress testing and basic cardiac investigations in railway hospitals, and alert medical staff to abnormal findings.

What is the eligibility for RRB Paramedical ECG Technician?

10+2 (Science) with a Diploma in ECG / Cardiac Technology, or a B.Sc in Cardiac / Allied Health Science (Cardiology) from a recognised institution.

Which topic has the most questions in the ECG Technician paper?

Cardiac anatomy, ECG waveform analysis, and arrhythmia identification together form the core of the 70-mark professional ability section.