Medical officer and MBBS job interviews test your clinical knowledge, how you manage common emergencies, and your communication and ethics. These questions suit hospital medical officer posts, junior resident positions and government recruitment interviews, with answers that follow standard teaching.
These answers are for interview preparation and follow standard teaching. They are not clinical guidance; always follow current protocols and your institution's policies.
Fundamentals, definitions and simple scenarios. Good for freshers and warm-ups.
Temperature about 36.5 to 37.5 °C, pulse 60 to 100 beats per minute, respiratory rate 12 to 20 breaths per minute, blood pressure around 120/80 mmHg, and oxygen saturation of 95% or more on room air. Hypertension is generally diagnosed at 140/90 mmHg or above under Indian and European guidelines, while American guidelines use 130/80. I always interpret vital signs in context: the trend matters as much as a single value.
Arteries carry blood away from the heart under high pressure, so they have thick, muscular, elastic walls and a pulse. Veins carry blood back to the heart under low pressure, have thinner walls and a wider lumen, and in the limbs have valves to prevent backflow. Most arteries carry oxygenated blood, but the pulmonary artery carries deoxygenated blood, and the pulmonary veins carry oxygenated blood.
Sensitivity is the proportion of people with the disease who test positive: true positives ÷ (true positives + false negatives). A highly sensitive test is good for screening and for ruling a disease out when negative ("SnNout"). Specificity is the proportion of people without the disease who test negative: true negatives ÷ (true negatives + false positives). A highly specific test helps rule a disease in when positive ("SpPin").
Informed consent is a competent patient's voluntary agreement to a procedure or treatment after being told, in language they understand, what it involves, its benefits, its significant risks, the alternatives, and what may happen if they refuse. It must be given without pressure, documented (written for procedures and surgery), and the patient can withdraw it at any time. For minors or patients who lack capacity, consent comes from the legal guardian, except in emergencies.
Applied problems, trade-offs and questions about your own projects.
Assess airway, breathing and circulation, attach a monitor and get a 12-lead ECG within 10 minutes. Give oxygen only if saturation is below 90%. Give aspirin 300 mg chewed unless contraindicated, nitrates for pain if there is no hypotension or right ventricular infarct and no recent PDE5 inhibitor use, and analgesia. Add a second antiplatelet and anticoagulation as per protocol. For STEMI, arrange primary PCI if it can be done within 120 minutes, otherwise thrombolysis. Monitor for arrhythmias.
Using the WHO approach: "some dehydration" (restless or irritable, sunken eyes, drinks eagerly, skin pinch goes back slowly) is treated with ORS, about 75 ml/kg over four hours (Plan B). "Severe dehydration" (lethargic or unconscious, unable to drink, skin pinch goes back very slowly) needs IV fluids such as Ringer's lactate (Plan C). All children also get zinc supplements, continued feeding and breastfeeding, and caregivers are taught the danger signs.
Type 1 diabetes is autoimmune destruction of the pancreatic beta cells causing absolute insulin deficiency; it usually starts young, can present with diabetic ketoacidosis, and needs insulin for life. Type 2 is insulin resistance with relative insulin deficiency, linked to obesity, inactivity and family history, and is managed with lifestyle change, metformin and other drugs, and sometimes insulin. Diagnosis uses fasting glucose ≥126 mg/dL, 2-hour OGTT ≥200 mg/dL, HbA1c ≥6.5%, or random glucose ≥200 mg/dL with symptoms.
Recognise it early: sudden airway, breathing or circulation problems, often with skin or mucosal changes after exposure to a trigger. Give intramuscular adrenaline immediately, 0.5 mg (0.5 ml of 1:1000) for an adult into the anterolateral thigh, and repeat every five minutes if needed. Lay the patient flat with legs raised (or sitting if breathing is difficult), give high-flow oxygen and IV fluids, and remove the trigger. Antihistamines and steroids are second-line. Observe for a biphasic reaction.
System design, deep internals, leadership and tough follow-ups.
Classic PUO is fever above 38.3 °C for more than three weeks without a diagnosis after initial investigation. I take a thorough history (travel, contacts, animal exposure, medicines, TB risk) and examine repeatedly. The main causes are infections such as TB, infective endocarditis, abscesses and enteric fever; malignancy, especially lymphoma; autoimmune conditions; and drug fever. Investigations are stepwise: blood counts, ESR and CRP, repeated blood cultures, urine, liver tests, chest X-ray and ultrasound, then CT or biopsy as directed. I avoid blind antibiotics if the patient is stable.
I treat it as a suspected stroke and act fast. Assess ABC, check blood glucose to exclude hypoglycaemia, establish the time the patient was last known well, and assess severity, for example with the NIHSS. Arrange an urgent non-contrast CT to exclude haemorrhage. An eligible ischaemic stroke within 4.5 hours gets IV thrombolysis, and a large vessel occlusion is considered for mechanical thrombectomy, in selected patients up to 24 hours. I also manage blood pressure, screen swallowing, and start antiplatelets as per protocol.
I use the SPIKES framework. Setting: a private space, sitting down, with time and family if the patient wishes. Perception: find out what they already know. Invitation: ask how much they want to know. Knowledge: give a warning shot, then the news in simple, clear language without jargon, in small pieces. Emotions: pause, acknowledge and respond with empathy. Strategy and summary: explain the next steps and plan, check understanding, and arrange follow-up.
Recognise sepsis early, measure lactate, take blood cultures before antibiotics, and give broad-spectrum antibiotics within one hour. For hypotension or lactate of 4 mmol/L or more, give 30 ml/kg of crystalloid. If blood pressure does not respond, start vasopressors, with noradrenaline first-line, targeting a mean arterial pressure of 65 mmHg or more. Find and control the source of infection, monitor urine output and lactate, reassess often, and involve critical care early.