Pain Management Indian Medical PG Practice Questions and MCQs
Practice Indian Medical PG questions for Pain Management. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Pain Management Indian Medical PG Question 1: Anaesthetic agent causing analgesia?
- A. Thiopentone
- B. Ketamine (Correct Answer)
- C. Propofol
- D. Etomidate
Pain Management Explanation: ***Ketamine***
- Ketamine provides excellent **analgesia** by acting as an **NMDA receptor antagonist**, making it unique among commonly used intravenous anesthetics [1].
- It induces a state of **dissociative anesthesia**, where the patient is conscious but detached from painful stimuli, maintaining cardiovascular stability [1].
*Thiopentone*
- Thiopentone is a **barbiturate** that causes rapid **induction of anesthesia** and profound **sedation** but has no analgesic properties.
- Its primary action is through potentiation of GABA-A receptor activity, leading to central nervous system depression.
*Propofol*
- Propofol is a widely used intravenous anesthetic known for its rapid onset and short duration of action, but it lacks significant **analgesic effects** [3].
- It primarily works by enhancing GABA-A receptor function, leading to **sedation** and hypnosis.
*Etomidate*
- Etomidate is an intravenous anesthetic characterized by its minimal cardiovascular depression, making it suitable for patients with **hemodynamic instability**, but it provides **no analgesia** [1], [2].
- Its anesthetic effect is mediated through GABA-A receptor potentiation, resulting in rapid loss of consciousness.
Pain Management Indian Medical PG Question 2: Intravenous regional anesthesia is suitable for :
- A. Caesarian section
- B. Head and neck surgery
- C. Orthopedic manipulation on the upper limb (Correct Answer)
- D. Vascular surgery on the lower limb
Pain Management Explanation: ***Orthopedic manipulation on the upper limb***
- **Intravenous regional anesthesia (IVRA)**, also known as a Bier block, is ideal for **short-duration procedures on the extremities**, especially the upper limb.
- The technique involves isolating the limb with a **tourniquet** and injecting a local anesthetic intravenously, making it suitable for procedures like **orthopedic manipulations** that are typically less than an hour.
*Caesarian section*
- A Caesarian section requires **widespread anesthesia** to the lower abdomen and uterus, which cannot be achieved with IVRA.
- It is typically performed under **spinal or epidural anesthesia**, or general anesthesia.
*Head and neck surgery*
- **IVRA** is a regional technique limited to the extremities below the tourniquet; it cannot provide anesthesia for the **head and neck region**.
- Procedures in this area usually require **general anesthesia** or sometimes regional blocks like cervical plexus blocks.
*Vascular surgery on the lower limb*
- While IVRA can be used on the lower limb, **vascular surgery** often involves **longer durations** and may require more profound muscle relaxation and sensory blockade than IVRA can reliably provide.
- Additionally, the use of a **tourniquet for extended periods** in vascular surgery patients can be contraindicated due to potential ischemic complications.
Pain Management Indian Medical PG Question 3: A nondiabetic, nonhypertensive patient has occasional extra heartbeats. The doctor informed them it is benign, but the patient continues to seek investigations from doctor to doctor. This is a type of:
- A. Depression
- B. Conversion disorder
- C. Somatoform pain
- D. Illness Anxiety Disorder (Correct Answer)
Pain Management Explanation: ***Illness Anxiety Disorder***
- This condition is characterized by **preoccupation with having or acquiring a serious illness**, despite minimal or no somatic symptoms, or an excessive preoccupation if symptoms are present.
- The patient's repeated seeking of investigations despite medical assurance of a benign condition aligns with the diagnostic criteria of **illness anxiety disorder**, where reassurance has little effect.
*Depression*
- While **depressive symptoms** (e.g., low mood, anhedonia) can coexist with health anxieties, the primary driver here is the fear of serious illness rather than pervasive sadness or loss of interest.
- Patients with depression typically report a **generalized dysphoria** or lack of energy, which is not the central issue described.
*Conversion disorder*
- Involves **neurological symptoms** (e.g., paralysis, blindness, seizures) that are incompatible with recognized neurological conditions and are not intentionally produced.
- The patient's concern is about a benign cardiac finding, not the sudden onset of **functional neurological deficits**.
*Somatoform pain*
- This term is older and has largely been replaced by **Somatic Symptom Disorder with predominant pain**, where psychological factors play a significant role in the onset, severity, exacerbation, or maintenance of pain.
- The patient's main concern is about the **implication of a benign symptom** rather than experiencing overwhelming pain itself.
Pain Management Indian Medical PG Question 4: Perception of normal (non-painful) sensory stimuli as painful is called
- A. Causalgia
- B. Hyperpathia
- C. Hyperalgesia
- D. Allodynia (Correct Answer)
Pain Management Explanation: ***Allodynia***
- This is the experience of **pain from stimuli that are not typically painful**, such as light touch or brushing against the skin.
- It arises from abnormal processing of sensory signals in the central nervous system, often seen in conditions like **neuropathic pain** and **fibromyalgia**.
*Causalgia*
- This term refers to **complex regional pain syndrome type II**, which is characterized by **burning pain** and often involves nerve injury.
- While it involves severe pain, it typically results from a noxious stimulus becoming excessively painful, rather than a non-painful stimulus being perceived as painful.
*Hyperpathia*
- This describes an **exaggerated pain reaction to a painful stimulus**, often involving a raised threshold for pain alongside an increased and persistent response.
- Unlike allodynia, the initial stimulus is already painful; hyperpathia simply makes the response more intense and prolonged.
*Hyperalgesia*
- This is an **increased pain response to a stimulus that is normally painful**, meaning a painful stimulus is perceived as even more painful than expected.
- The key difference from allodynia is that the stimulus itself is already nociceptive (pain-producing), whereas in allodynia, a non-nociceptive stimulus elicits pain.
Pain Management Indian Medical PG Question 5: Which of the following pain medications requires the MOST caution in a patient with a history of opioid addiction?
- A. Morphine (Correct Answer)
- B. Oxycodone
- C. Methadone
- D. Buprenorphine
Pain Management Explanation: ***Morphine***
- Morphine is a **full mu-opioid agonist** with the highest potential for **abuse, dependence, and relapse** in patients with a history of opioid addiction due to its strong **euphoric effects**.
- It carries the greatest risk of triggering **addictive behaviors** and relapse in recovering patients, making it require the MOST caution in this population.
- Use should be avoided if possible, or limited to short-term use under strict supervision with alternative analgesics preferred.
*Oxycodone*
- Oxycodone is another **potent full opioid agonist** with very high abuse potential, nearly equivalent to morphine.
- While requiring extreme caution, morphine remains the prototypical high-risk opioid in addiction-prone patients.
*Methadone*
- Methadone is a **long-acting full opioid agonist** used in opioid maintenance therapy with significant abuse potential.
- However, when used appropriately in supervised programs, it has a role in addiction treatment, though acute pain prescribing requires caution due to its **long half-life and QTc prolongation risk**.
*Buprenorphine*
- Buprenorphine is a **partial mu-opioid agonist** with a **ceiling effect** that limits respiratory depression and euphoria.
- It is the **standard medication for opioid use disorder treatment** and has LOWER abuse potential than full agonists.
- While it requires careful timing to avoid precipitated withdrawal in opioid-dependent patients, it is actually SAFER than full agonists in patients with addiction history due to reduced relapse risk.
Pain Management Indian Medical PG Question 6: Which nerve is targeted in the nasociliary nerve block?
- A. Greater palatine nerve
- B. Sphenopalatine nerve
- C. Anterior ethmoidal nerve
- D. Nasociliary nerve (Correct Answer)
Pain Management Explanation: ***Nasociliary nerve***
- A nasociliary nerve block specifically targets the **nasociliary nerve** itself.
- This block is used to anesthetize the sensory innervation of structures supplied by the nasociliary nerve, such as parts of the **nasal cavity**, **eyeball**, and **skin of the nose**.
*Greater palatine nerve*
- The **greater palatine nerve** supplies sensation to the posterior hard palate and is targeted in a **greater palatine nerve block**.
- This nerve is a branch of the **maxillary nerve** and is primarily involved in dental and palatal anesthesia.
*Sphenopalatine nerve*
- The **sphenopalatine nerve**, or pterygopalatine ganglion, contains sensory fibers for the nasal cavity, palate, and pharynx, and its block is distinct from a nasociliary block.
- A **sphenopalatine ganglion block** is mainly used for conditions like cluster headaches and facial pain, not for direct eyeball sensation.
*Anterior ethmoidal nerve*
- The **anterior ethmoidal nerve** is a branch of the nasociliary nerve, but a nasociliary nerve block targets the main trunk, which includes all its branches.
- While the anterior ethmoidal nerve supplies the anterior part of the nasal septum and lateral wall, it is a **component** of the nasociliary innervation rather than the sole target.
Pain Management Indian Medical PG Question 7: A malnourished 60-year-old man underwent emergency surgery for Strangulated Sigmoid Volvulus. After resection of the sigmoid colon, a colostomy was fashioned. The postoperative period was stormy and he developed a painful calf swelling in right lower limb. The most probable diagnosis is :
- A. Myocardial failure due to fluid overload
- B. Deep vein thrombosis (Correct Answer)
- C. Oedema of renal failure
- D. Hypoproteinaemia
Pain Management Explanation: ***Deep vein thrombosis***
- Postoperative patients, especially those undergoing **abdominal surgery** and those with **malnutrition**, are at high risk for **deep vein thrombosis (DVT)** due to Virchow's triad (venous stasis, endothelial injury, hypercoagulability).
- A **painful calf swelling** is a classic symptom of DVT, indicating clot formation within the deep veins of the leg.
*Myocardial failure due to fluid overload*
- While fluid overload can occur post-surgery, it typically leads to **generalized edema**, shortness of breath, and signs of cardiac dysfunction, not isolated painful calf swelling.
- The primary presentation here is a localized, painful swelling, which is less consistent with systemic cardiac issues.
*Oedema of renal failure*
- **Renal failure** can cause **edema**, but it tends to be **pitting, bilateral, and generalized**, often affecting the ankles and sacral areas.
- It would not typically present as a painful, unilateral calf swelling without other signs of kidney dysfunction.
*Hypoproteinaemia*
- **Hypoproteinaemia**, common in **malnourished** individuals, can cause **generalized non-pitting edema** due to decreased oncotic pressure, not specifically a painful calf swelling.
- It would manifest as widespread edema rather than a localized, painful swelling indicative of a thrombotic event.
Pain Management Indian Medical PG Question 8: A patient developed breathlessness and chest pain, on second postoperative day after a total hip replacement. Echocardiography showed right ventricular dilatation and tricuspid regurgitation. What is the most likely diagnosis?
- A. Pulmonary embolism (Correct Answer)
- B. Cardiac tamponade
- C. Acute MI
- D. Hypotensive shock
Pain Management Explanation: ***Pulmonary embolism***
- Postoperative state, sudden onset of **breathlessness**, and **chest pain** are classic symptoms of pulmonary embolism (PE).
- **Right ventricular dilatation** and **tricuspid regurgitation** on echocardiography are strong indicators of acute right heart strain due to increased pulmonary artery pressure caused by the embolus.
*Cardiac tamponade*
- Characterized by muffled heart sounds, **pulsus paradoxus**, and **hypotension**, often due to fluid accumulation in the pericardial sac.
- While it can cause breathlessness, the echocardiographic findings of **right ventricular dilatation** and **tricuspid regurgitation** are not typical of tamponade.
*Acute MI*
- Myocardial infarction typically presents with ischemic chest pain, often radiating, and is primarily diagnosed by **ECG changes** and **cardiac enzymes**.
- While acute MI can cause breathlessness, the combination of a postoperative setting and the specific echocardiographic findings of **right heart strain** points away from an initial diagnosis of MI.
*Hypotensive shock*
- Hypotensive shock is a state of severe low blood pressure leading to organ hypoperfusion, with various underlying causes.
- While PE can *lead to* hypotensive shock due to hemodynamic compromise, the question describes the specific pathology (right heart strain) rather than just the resultant shock state.
Pain Management Indian Medical PG Question 9: A patient comes with a complaint of shoulder pain after laparoscopic surgery. What should be the next step in management?
- A. Intraarticular lignocaine injection
- B. USG of shoulder region
- C. Oral paracetamol for 2 - 3 days (Correct Answer)
- D. Diagnostic shoulder arthroscopy
Pain Management Explanation: ***Oral paracetamol for 2 - 3 days***
- Post-laparoscopic shoulder pain is a common, self-limiting symptom caused by **diaphragmatic irritation from residual CO2 gas**, and typically resolves with conservative treatment.
- **Oral analgesics** like paracetamol are the first-line treatment for managing this transient pain.
*Intraarticular lidocaine injection*
- This intervention is typically reserved for more severe or persistent **arthritic pain**, or for diagnostic purposes in the shoulder joint itself.
- The pain described is referred pain from the **diaphragm**, not intrinsic joint pathology, making an intraarticular injection inappropriate as a first step.
*USG of the shoulder region*
- **Ultrasound** imaging is used to evaluate structural abnormalities within the shoulder joint (e.g., rotator cuff tears, tendinitis).
- Since the pain is likely referred from **CO2 irritation of the diaphragm**, imaging of the shoulder joint is unlikely to reveal the cause and is not the appropriate initial step.
*Diagnostic shoulder arthroscopy*
- **Arthroscopy** is an invasive surgical procedure used for diagnosing and treating complex shoulder conditions.
- Given that post-laparoscopic shoulder pain is generally benign and resolves spontaneously, such an invasive procedure is **unjustified** and carries unnecessary risks.
Pain Management Indian Medical PG Question 10: A female patient who underwent surgery for abdominal intestinal perforation presents on the 5th postoperative day with serous discharge and a gap in the wound. What is the most likely diagnosis?
- A. Wound dehiscence (Correct Answer)
- B. Enterocutaneous fistula
- C. Peritonitis
- D. Seroma
Pain Management Explanation: ***Wound dehiscence***
- This is the most likely diagnosis given the presentation of **serous discharge** and a **gap in the wound** on the 5th postoperative day.
- **Abdominal intestinal perforation** surgery is a risk factor, and the timing is consistent with **fascial dehiscence**, which can lead to evisceration if left untreated.
*Enterocutaneous fistula*
- This involves a connection between the **bowel lumen** and the **skin surface**, typically discharging enteric contents (e.g., bile, stool), not just serous fluid.
- While a possibility in complicated abdominal surgeries, the description of a "gap in the wound" and serous discharge is more indicative of a **structural failure** of the wound.
*Seroma*
- A seroma is a collection of **serous fluid** under the skin flap or surgical incision, presenting as a **fluctuant swelling**, but it typically does not involve a "gap in the wound."
- It would not usually present with a wound **disruption** that exposes underlying tissue; instead, it's an intact pocket of fluid.
*Peritonitis*
- This is an **inflammation of the peritoneum**, usually caused by infection, and presents with **severe abdominal pain**, fever, and diffuse tenderness, which are not mentioned here.
- While an intestinal perforation would initially cause peritonitis, the current presentation focuses on the **wound site** rather than systemic or diffuse abdominal symptoms.
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