RRB Paramedical OT Technician Syllabus

The RRB Paramedical exam for the post of OT Technician (Operation Theatre Technician) tests your knowledge of surgical nursing, anaesthesia support, OT management, and patient safety. The 70-mark Professional Ability section covers topics from your DMLT OT / B.Sc OT Technology or CSSD diploma curriculum. The 30-mark General Aptitude section is the same across all paramedical posts. The OT Technician in Indian Railways provides essential support during surgeries performed in railway divisional and zonal hospitals.

Professional Ability Syllabus for OT Technician (70 Marks)

Anatomy and Physiology Relevant to Surgery

An OT Technician must understand the basic anatomy of all major body regions involved in common surgical procedures: abdominal anatomy (layers of the abdominal wall, peritoneum, organs and their blood supply), thoracic anatomy (heart, lungs, chest wall), musculoskeletal anatomy (bones, joints, muscles), and neurological anatomy (brain, spinal cord, peripheral nerves). Understanding anatomy helps you anticipate what the surgeon needs and assists in correct instrument handling and patient positioning.

Operation Theatre Setup and Management

A large share of professional ability questions come from OT design and management. Know:

•        OT zones: Outer zone (reception/administrative), Clean zone (scrub area, instrument preparation), Aseptic zone (the OT itself), and Disposal zone.

•        OT ventilation and air conditioning: Laminar airflow systems, positive pressure OT, HEPA filters, and temperature and humidity standards.

•        OT lighting: Shadowless lights (OT lights), intensity, and colour temperature requirements.

•        Instrument and equipment trolley setup: Mayo stand, back table arrangement, and basic layout for common procedures.

•        OT documentation: Surgical count (instruments, sharps, swabs) before, during, and after surgery.

Sterilisation, Disinfection, and Asepsis

This is one of the most heavily tested topics for OT Technicians. Know:

•        Levels of sterilisation: Sterilisation (killing all organisms including spores) vs. disinfection (killing most organisms) vs. antisepsis (reducing organisms on living tissue).

•        Autoclave (steam sterilisation): Standard parameters are 121°C at 15 psi for 15 minutes (gravity cycle) or 134°C at 30 psi for 3 minutes (pre-vacuum cycle). Used for heat-stable instruments.

•        Ethylene Oxide (EtO) sterilisation: For heat-sensitive items like endoscopes, plastics, and optical instruments. Requires aeration period after sterilisation.

•        Chemical sterilisation: Glutaraldehyde 2% (Cidex) for 10 hours for sterilisation; 20 to 30 minutes for high-level disinfection.

•        Plasma sterilisation (Hydrogen Peroxide): Fast, low-temperature method for heat-sensitive items.

•        Dry heat sterilisation (Hot Air Oven): 160°C for 60 minutes or 170°C for 30 minutes. Used for powders, oils, and glass.

•        Spaulding classification: Critical items (enter sterile tissue — must be sterile), Semi-critical (contact mucous membranes — HLD minimum), Non-critical (skin contact only — low-level disinfection).

Surgical Instruments: Identification and Use

You need to identify and know the purpose of common surgical instruments used in general, orthopaedic, gynaecological, and ENT surgeries:

•        Cutting instruments: Scalpel (blade numbers 10, 11, 15, 20, 22), scissors (Metzenbaum, Mayo, iris), electrosurgical knife.

•        Haemostatic forceps: Artery forceps (mosquito, Halstead, Kocher, right-angle), tissue forceps (Allis, Babcock).

•        Retractors: Langenbeck, Deaver, self-retaining retractors (Balfour, Weitlaner, Gelpi).

•        Needle holders: Mayo-Hegar, Mathieu. Know the suture classification (absorbable vs. non-absorbable, natural vs. synthetic).

•        Suction devices: Poole suction, Yankauer suction, Frazier suction.

•        Laparoscopic instruments: Trocar and cannula, Veress needle, graspers, clip applicator.

Anaesthesia Support for OT Technician

An OT Technician frequently assists the anaesthesiologist and must know:

•        Types of anaesthesia: General anaesthesia (GA), regional anaesthesia (spinal, epidural, nerve blocks), local anaesthesia, and monitored anaesthesia care (MAC).

•        Stages of general anaesthesia: Stage I (analgesia), Stage II (excitement), Stage III (surgical anaesthesia — divided into 4 planes), Stage IV (medullary depression — dangerous).

•        Airway management equipment: Endotracheal tubes (ETT — sizes), laryngoscopes (Macintosh, Miller blades), LMA (Laryngeal Mask Airway), Guedel airway.

•        Anaesthesia machine components: Gas cylinders (colour coding: oxygen — black body with white shoulder in India), flowmeters, vaporisers, breathing circuits (Bain circuit, circle system).

•        Monitoring during anaesthesia: ECG, SpO2, ETCO2 (end-tidal CO2), NIBP, temperature, and neuromuscular monitoring.

•        Reversal of anaesthesia: Neostigmine (reverses neuromuscular blockade), Sugammadex (reverses rocuronium/vecuronium), Naloxone (opioid reversal), Flumazenil (benzodiazepine reversal).

Patient Positioning in the OT

Correct patient positioning prevents nerve injuries, pressure sores, and cardiovascular complications. Know the following positions and the surgeries they are used for:

•        Supine (dorsal recumbent) — most general abdominal, cardiac, and thoracic surgeries.

•        Prone position — spinal surgeries, posterior fossa brain surgeries. Risk: pressure on eyes, abdomen, genitalia.

•        Lateral decubitus — thoracotomy, hip replacement, kidney surgery.

•        Lithotomy position — perineal, gynaecological, and urological procedures. Risk: compartment syndrome of the lower limb.

•        Trendelenburg — pelvic surgeries, laparoscopic gynaecological procedures.

•        Reverse Trendelenburg — head and neck surgeries, laparoscopic cholecystectomy.

•        Sitting (beach chair) position — shoulder arthroscopy, posterior cervical spine surgery.

Surgical Wound Management and Drains

Know the classification of surgical wounds: Class I (clean), Class II (clean-contaminated), Class III (contaminated), Class IV (dirty/infected). Know common types of surgical drains: closed suction drains (Hemovac, Jackson-Pratt), open drains (Penrose, corrugated rubber), and tube drains (intercostal drain, T-tube for bile duct). Know when drains are placed, how to monitor drain output, and when to remove them.

Post-operative Care and Recovery Room

Know the immediate post-operative monitoring parameters: consciousness level (AVPU scale), airway patency, breathing rate and SpO2, blood pressure and pulse, pain score, urine output, surgical site bleeding, and drain output. Know the Aldrete Score used to assess readiness for discharge from the recovery room (PACU). Know complications of the post-operative period: reactionary haemorrhage, respiratory depression, laryngospasm, and hypotension.

CSSD (Central Sterile Supply Department)

The CSSD is closely linked to OT functioning. Know the decontamination workflow: collection of used instruments → manual cleaning → automated washer-disinfector → inspection and packing → sterilisation → storage → distribution. Know biological indicators (Geobacillus stearothermophilus spores for autoclave) and chemical indicators (Bowie-Dick test, Class 4, 5, 6 indicators) used to verify sterilisation.

Preparation Tips for OT Technician

•        Sterilisation methods and their parameters are heavily tested — know the temperature, pressure, time, and appropriate items for every method.

•        Instrument identification questions use images in some exams — study from an instrument atlas or surgical nursing textbook with photographs.

•        Patient positioning and its complications are commonly asked practical knowledge questions — make a summary table of position, surgery, and main risk.

•        Anaesthesia stages and equipment require careful study. Focus on stages of GA, airway adjuncts, and gas cylinder colour codes.

•        Know the Spaulding classification by heart as it underpins all sterilisation decision-making questions.

Frequently Asked Questions (FAQs)

What is the role of an OT Technician in Indian Railways?

OT Technicians set up the operation theatre, prepare sterile instrument sets, assist during surgical procedures, ensure correct surgical counts, and manage the OT environment and equipment.

What eligibility is required for RRB Paramedical OT Technician?

10+2 (Science) with a Diploma in Operation Theatre Technology (DOTT) or equivalent. Some notifications accept B.Sc in OT Technology.

Which is the most important subject for OT Technician preparation?

Sterilisation and asepsis, surgical instruments, and anaesthesia support together carry the majority of marks in the professional ability section.