Penetrating and Perforating Injuries — MCQs

10 questions

A patient presents with acute appendicitis. What is NOT to be done?

Following injury to the right temple region, a patient complains of pain in the right eye and loss of vision. On examination, the eye movements are normal, and the pupil normally reacts to light. The affected eye shows increased intraocular pressure of 32 mmHg (normal: 10-21 mmHg), mild corneal edema, and a small hyphema visible in the anterior chamber. The diagnosis is

All of the following are complications of traumatic hyphema except which of the following?

'S-A-F-E program' was initiated for the control of which of the following conditions?

A patient presents with eye ache and difficulty in vision after watching a movie. What will be the first line of management?

All are ocular emergencies except

In a patient with a metallic foreign body in the eye, which investigation should NOT be done?

All of the following are true for sympathetic ophthalmitis except which of the following?

What is the immediate management approach for severe vitreous hemorrhage in the eye?

Q10

Hyphaema, or blood in the anterior chamber, is suggestive of:

Penetrating and Perforating Injuries Indian Medical PG Practice Questions and MCQs

Question 1: A patient presents with acute appendicitis. What is NOT to be done?

A. Give antibiotics
B. Do primary survey
C. Perform appendectomy
D. Check for visual acuity (Correct Answer)

Explanation: ***Check for visual acuity*** - **Visual acuity** assessment is not relevant to the diagnosis or management of **acute appendicitis**. - This examination is typically performed in cases of suspected eye injury, vision changes, or neurological issues that affect vision. - In the context of acute appendicitis, checking visual acuity would be inappropriate and waste valuable time. *Give antibiotics* - **Antibiotics** are crucial in managing **acute appendicitis** to prevent progression to perforation and reduce postoperative infection risk. - They are typically administered preoperatively and continued postoperatively, especially in cases of complicated appendicitis. - Broad-spectrum antibiotics covering **gram-negative organisms and anaerobes** are standard practice. *Do primary survey* - A **primary survey** (ABCDE approach) is essential in any emergent patient presentation to assess and manage immediate **life-threatening conditions**. - While appendicitis itself may not be immediately life-threatening, ensuring patient stability and ruling out other serious conditions is critical. - This is standard emergency medicine practice and should always be performed. *Perform appendectomy* - **Appendectomy** (surgical removal of the appendix) is the definitive treatment for **acute appendicitis**. - This is the standard of care and should be performed once the diagnosis is confirmed and the patient is stable. - Either open or laparoscopic approach can be used depending on clinical factors and surgeon expertise.

Question 2: Following injury to the right temple region, a patient complains of pain in the right eye and loss of vision. On examination, the eye movements are normal, and the pupil normally reacts to light. The affected eye shows increased intraocular pressure of 32 mmHg (normal: 10-21 mmHg), mild corneal edema, and a small hyphema visible in the anterior chamber. The diagnosis is

A. Traumatic glaucoma (Correct Answer)
B. Optic nerve atrophy
C. Sub-arachnoid haemorrhage
D. Functional loss of vision

Explanation: ***Traumatic glaucoma*** - Increased **intraocular pressure (32 mmHg)** after a **temple injury** with **corneal edema** and **hyphema** are classic signs of traumatic glaucoma. - The hyphema (blood in the anterior chamber) obstructs the **trabecular meshwork**, impeding aqueous humor outflow and leading to elevated IOP. *Optic nerve atrophy* - While optic nerve atrophy can cause **vision loss**, it is a chronic condition and typically not an acute presentation following trauma unless there is direct optic nerve damage. - It would not explain the acute findings of **hyphema**, **corneal edema**, or acutely elevated **intraocular pressure**. *Sub-arachnoid haemorrhage* - A **sub-arachnoid hemorrhage** might present with headache and loss of consciousness, or **papilledema** in severe cases, but typically would not cause such specific eye findings as **hyphema** or **corneal edema** from elevated IOP. - While a blow to the head could cause this, the direct eye findings point to a local ocular issue. *Functional loss of vision* - **Functional vision loss** (or psychogenic vision loss) is a diagnosis of exclusion where no organic cause can be found. - The presence of clear organic signs such as **hyphema**, **corneal edema**, and significantly elevated **intraocular pressure** rules out a functional cause.

Question 3: All of the following are complications of traumatic hyphema except which of the following?

A. Pupillary Block
B. Posterior synechiae
C. Rebleeding
D. Corneal Ulcer (Correct Answer)

Explanation: ***Corneal Ulcer*** - A **corneal ulcer** is typically caused by infection, trauma, or exposure keratitis and is not a direct complication of blood in the anterior chamber from a **traumatic hyphema**. - While prolonged elevation of **intraocular pressure** from hyphema could theoretically impair corneal health, a direct ulcer is not a typical or primary complication. *Rebleeding* - **Rebleeding** is a common and serious complication of hyphema, usually occurring 2-7 days after the initial injury. - It often results in a more significant bleed and carries a higher risk of complications such as **elevated intraocular pressure** and **blood staining of the cornea**. *Pupillary Block* - **Pupillary block** can occur if the amount of blood from the hyphema prevents the flow of aqueous humor from the posterior to the anterior chamber. - This blockage leads to a buildup of **aqueous humor** in the posterior chamber, causing the iris to bow forward and potentially precipitating **acute angle-closure glaucoma**. *Posterior synechiae* - **Posterior synechiae** can develop due to inflammation (uveitis) associated with the hyphema, where the iris adheres to the anterior lens capsule. - This complication can lead to **irregular pupil shape**, **pupillary block glaucoma**, or other visual disturbances.

Question 4: 'S-A-F-E program' was initiated for the control of which of the following conditions?

A. Ocular trauma
B. Onchocerciasis
C. Refractive error
D. Trachoma (Correct Answer)

Explanation: ***Trachoma*** - The **S-A-F-E program** is a comprehensive strategy developed by the World Health Organization (WHO) for the elimination of blinding **trachoma**. - **S-A-F-E** stands for **Surgery** for trichiasis, **Antibiotics** for infection, **Facial cleanliness**, and **Environmental improvement**. *Ocular trauma* - While ocular trauma is a significant cause of vision impairment, its control and prevention strategies are distinct from the specific interventions of the SAFE program. - Management of ocular trauma focuses on immediate medical attention, surgical repair, and preventive measures like protective eyewear. *Onchocerciasis* - **Onchocerciasis**, also known as river blindness, is controlled primarily through mass drug administration of **ivermectin**, alongside vector control. - This condition is caused by a parasitic worm (**Onchocerca volvulus**) and is not targeted by the SAFE program. *Refractive error* - **Refractive errors** (e.g., myopia, hyperopia, astigmatism) are corrected with spectacles, contact lenses, or refractive surgery. - They are not infectious diseases and do not require the public health interventions outlined in the SAFE program.

Question 5: A patient presents with eye ache and difficulty in vision after watching a movie. What will be the first line of management?

A. Mannitol with Moxifloxacin
B. Mannitol with Atropine
C. Mannitol with lubricating eye drops
D. Mannitol with Pilocarpine (Correct Answer)

Explanation: ***Mannitol with Pilocarpine*** - This combination is appropriate for **acute angle-closure glaucoma (AACG)**, which can be triggered by pupillary dilation (e.g., in a dark movie theater). **Mannitol** is an osmotic diuretic that rapidly reduces intraocular pressure. - **Pilocarpine** is a miotic agent that constricts the pupil, pulling the iris away from the trabecular meshwork and opening the drainage angle to facilitate aqueous humor outflow. *Mannitol with Moxifloxacin* - While mannitol helps with intraocular pressure, **Moxifloxacin is an antibiotic** used to treat bacterial infections. - There is no indication of an ocular infection in this scenario, so an antibiotic would not be the first-line treatment for sudden eye pain and vision difficulty after watching a movie. *Mannitol with Atropine* - Adding **Atropine, a cycloplegic agent**, would cause further pupillary dilation, which would worsen acute angle-closure glaucoma and increase intraocular pressure. - Atropine is contraindicated in AACG and would exacerbate the patient's condition. *Mannitol with lubricating eye drops* - While mannitol helps with intraocular pressure, **lubricating eye drops** are used for dry eyes or surface irritation, not for acute angle-closure glaucoma. - Lubricating drops do not address the underlying pathology of increased intraocular pressure due to angle closure.

Question 6: All are ocular emergencies except

A. Diabetic Retinopathy (Correct Answer)
B. Bacterial endophthalmitis
C. Sympathetic ophthalmitis
D. Eye injury

Explanation: ***Diabetic Retinopathy*** - While diabetic retinopathy is a serious condition that can lead to vision loss, it is a **chronic progressive disease** that usually does not demand immediate emergency intervention. - Its progression is often slow, and even severe forms like **proliferative diabetic retinopathy** or **diabetic macular edema** are typically treated in an **urgent but not emergent** time frame. - Patients can be managed on an outpatient basis with scheduled treatments. *Bacterial endophthalmitis* - This is an **acute intraocular infection** that constitutes a true ophthalmic emergency. - Can rapidly lead to severe and **irreversible vision loss within 24-48 hours** if not treated immediately. - Requires emergency treatment with **intravitreal antibiotics** and often vitrectomy to preserve vision. *Sympathetic ophthalmia* - This is a rare, bilateral **granulomatous panuveitis** that occurs as a delayed complication (usually **2 weeks to several months**) after penetrating trauma or intraocular surgery. - While not an acute emergency at onset, once diagnosed it requires **prompt aggressive immunosuppressive therapy** (corticosteroids, immunomodulators) to prevent bilateral vision loss. - In the context of acute presentations, the **initial penetrating eye injury** itself is the emergency, not the sympathetic ophthalmia which develops later. *Eye injury* - **Ocular trauma** constitutes a true ophthalmic emergency, especially penetrating injuries, chemical burns, globe rupture, or traumatic hyphema. - Requires **immediate medical and often surgical intervention** to prevent further damage, infection, or permanent vision loss. - Timing of treatment is critical and measured in hours.

Question 7: In a patient with a metallic foreign body in the eye, which investigation should NOT be done?

A. X-ray
B. MRI (Correct Answer)
C. CT
D. USG

Explanation: ***MRI*** - **Magnetic Resonance Imaging (MRI)** is contraindicated in patients with suspected **metallic foreign bodies** in the eye. - The powerful magnetic fields of an MRI can cause the metallic object to move, potentially leading to further **tissue damage** or even loss of vision. *X-ray* - **X-rays** are often the initial investigation of choice for detecting **radio-opaque foreign bodies** within the eye. - They can effectively localize larger metallic objects and are readily available in most emergency settings. *CT* - **Computed Tomography (CT)** scans provide detailed cross-sectional images and are excellent for precisely localizing **intraocular foreign bodies**, especially smaller ones. - CT can differentiate between metallic and non-metallic objects and assess for associated injuries like orbital fractures. *USG* - **Ultrasound (USG)** of the eye can be useful for detecting **intraocular foreign bodies**, especially if they are non-metallic or located in the posterior segment. - It can also assess for associated complications such as **retinal detachment** or vitreous hemorrhage.

Question 8: All of the following are true for sympathetic ophthalmitis except which of the following?

A. Mostly results from a penetrating wound
B. Autoimmune etiology
C. Dalen-Fuchs nodules may be seen
D. Affects the injured eye (Correct Answer)

Explanation: ***Affects the injured eye*** - Sympathetic ophthalmia is a **bilateral, granulomatous panuveitis** that characteristically affects the **fellow, uninjured eye** (sympathizing eye) following trauma or surgery to the other eye (exciting eye). - The disease involves an immune response directed against ocular antigens, typically from the uveal tissue, in the uninjured eye. *Mostly results from a penetrating wound* - This statement is true; **penetrating ocular trauma** (e.g., from surgery or injury) is the most common trigger for sympathetic ophthalmia. - The exposure of uveal antigens from the injured eye initiates an autoimmune response. *Autoimmune etiology* - This statement is true; sympathetic ophthalmia is an **autoimmune disease** mediated by T-lymphocytes against uveal antigens. - The condition is characterized by a delayed hypersensitivity reaction against exposed uveal proteins. *Dalen Fuch's nodules may be seen* - This statement is true; **Dalen-Fuchs nodules** are characteristic histopathological findings in sympathetic ophthalmia. - These are accumulations of epithelioid cells and lymphocytes located between the retinal pigment epithelium and Bruch's membrane.

Question 9: What is the immediate management approach for severe vitreous hemorrhage in the eye?

A. Steroids
B. Antibiotics
C. Conservative management (observation) (Correct Answer)
D. Vitrectomy

Explanation: ***Correct: Conservative management (observation)*** - **Conservative management with observation** is the immediate approach for severe vitreous hemorrhage, as most cases resolve spontaneously over 2-3 months - Initial management includes **bed rest with head elevation** to allow blood to settle inferiorly and **bilateral eye patching** to reduce eye movement - This approach allows time for **spontaneous resorption** of blood while monitoring for complications like retinal detachment - **Vitrectomy is reserved for later** if there's no improvement after 2-3 months, or if there are urgent indications like retinal detachment *Incorrect: Vitrectomy* - While vitrectomy is definitive treatment, it is **not immediate management** for uncomplicated vitreous hemorrhage - **Indications for vitrectomy** include: failure to clear after 2-3 months of observation, bilateral hemorrhage in diabetics, suspected retinal detachment, or ghost cell glaucoma - Immediate vitrectomy would expose patients to **unnecessary surgical risks** when most cases resolve spontaneously *Incorrect: Steroids* - **Steroids** reduce inflammation but do not address the blood in the vitreous cavity - They have **no role** in managing vitreous hemorrhage itself, though they may be used for associated inflammatory conditions *Incorrect: Antibiotics* - **Antibiotics** treat bacterial infections and have **no role** in vitreous hemorrhage management, which is a bleeding issue, not an infection - Inappropriate antibiotic use contributes to resistance without providing benefit for this condition

Question 10: Hyphaema, or blood in the anterior chamber, is suggestive of:

A. Intraocular trauma (Correct Answer)
B. Posterior uveitis
C. Capillary hemangioma of the lid
D. High grade myopia

Explanation: ***Intraocular trauma*** - **Hyphaema**, or blood in the **anterior chamber**, is a classic sign of **intraocular trauma**, where eye structures are damaged, leading to bleeding. - This can result from blunt force or penetrating injuries that rupture blood vessels within the **iris, ciliary body**, or other anterior segment structures. *Posterior uveitis* - Posterior uveitis involves inflammation of the **choroid and retina**, not typically causing bleeding into the **anterior chamber**. - It presents with symptoms like **floaters** and **decreased vision**, without direct hyphaema. *Capillary hemangioma of the lid* - A capillary hemangioma is a **benign vascular tumor** on the eyelid and does not cause **intraocular bleeding** into the anterior chamber. - While it can disrupt vision by blocking the visual axis, it is an **external lesion**. *High grade myopia* - High grade myopia leads to a **stretched globe** and **retinal thinning**, increasing the risk of **retinal detachment** or **macular degeneration**. - It does not directly cause **hyphaema**, which is an anterior chamber bleeding event.

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