NEET-PG 2013 Practice Questions

Q: What is a significant disadvantage of ketamine?

Delirium. ***Delirium*** - Ketamine is known to cause **emergence phenomena**, which include **vivid dreams, hallucinations**, and **delirium**, particularly during recovery from anesthesia. - This psychotomimetic effect can be distressing for patients and may necessitate the co-administration of a **benzodiazepine** to mitigate these symptoms. *Increased heart rate* - While ketamine does cause an **increase in heart rate** and **blood pressure** due to sympathetic stimulation, this is often considered a disadvantage but not the *most significant* when compared to the unique cognitive side effects. - This effect can be beneficial in patients with **hemodynamic instability**, but can be problematic in those with **cardiovascular disease**. *Increased ICT* - It is often considered a contraindication in patients with **elevated intracranial pressure (ICP)** as it can potentially increase **cerebral blood flow** and thus ICP. - However, recent studies suggest that in adequately ventilated patients, the effect on ICP may be less pronounced than previously thought, making delirium a more consistent and prominent disadvantage for many patients. *All of the options* - While ketamine can cause an **increased heart rate** and potentially affect **intracranial pressure**, **delirium** and other emergence phenomena are often highlighted as a unique and significant disadvantage because they are highly distressing and difficult to manage. - The psychotomimetic effects are a hallmark side effect that often governs its cautious use without concurrent medication.

Q: Skin scraping and KOH mounting is primarily used to diagnose which of the following conditions?

Dermatophyte infection. ***Dermatophyte infection*** - Skin scraping followed by **KOH mounting** is the **primary and gold standard** diagnostic method for dermatophyte infections - **Potassium hydroxide (KOH)** dissolves keratin, making **fungal hyphae and arthroconidia** clearly visible under microscopy - This is the **most common indication** for KOH preparation in dermatology practice - Demonstrates **septate hyphae** characteristic of dermatophytes *Candidiasis* - KOH mounting can also identify *Candida* species by revealing **pseudohyphae and budding yeast cells** - While KOH can diagnose candidiasis, dermatophyte infections remain the **primary and most frequent indication** for this test in skin lesions - Candida more commonly affects mucosal surfaces where other diagnostic methods may be preferred *Bacterial infection* - Bacterial infections are diagnosed using **Gram stain, culture, and sensitivity** testing - KOH mounting is specifically for **fungal elements** and does not visualize bacteria effectively - Bacterial skin infections require different diagnostic approaches *Herpes Simplex Virus (HSV)* - HSV infections are diagnosed using **Tzanck smear** (showing multinucleated giant cells), **viral culture, or PCR** - KOH mounting is exclusively for fungal identification and **cannot detect viruses** - Viral cytopathic effects are not visible with KOH preparation

Q: Commonest variety of compound presentation is?

Head with hand. ***Head with hand*** - This is the **most frequent type** of compound presentation, where a fetal extremity (typically a hand) prolapses alongside the fetal head into the maternal pelvis. - It occurs due to factors that prevent the fetal head from snugly filling the pelvis, such as **cephalopelvic disproportion** or a **high fetal station**. *Head with foot* - While possible, the presentation of the **head with a foot** is less common than with a hand. - A foot alongside the head often suggests a more complex presentation or potential issues with fetal lie or attitude. *Head with both foot* - The simultaneous presentation of the **head with both feet** is exceedingly rare. - This scenario would indicate a profound degree of space for fetal extremities to descend alongside the head, possibly in cases of extreme prematurity or pelvic relaxation. *Head, hand & foot* - The combined presentation of the **head, a hand, and a foot** is extremely uncommon. - Such a complex presentation would suggest significant fetal mobility in a large pelvic space, making it a very rare occurrence in clinical practice.

Q: Which type of suture is primarily used for the repair of a complete perineal tear?

Vicryl. ***Correct Answer: Vicryl (Polyglactin 910)*** - **Vicryl is the gold standard suture material** for repair of complete perineal tears (third and fourth-degree) - It is a **synthetic absorbable braided suture** with excellent tensile strength that maintains tissue support during critical healing phase - **Absorption profile**: Loses 50% tensile strength by 2 weeks, completely absorbed in 56-70 days, ideal for perineal tissue healing - **Minimal tissue reaction** and low infection risk compared to natural sutures - **Recommended by RCOG and ACOG guidelines** for layer-by-layer repair of perineal tears involving anal sphincter *Incorrect: Monocryl* - Monocryl (Poliglecaprone 25) is a fast-absorbing monofilament suture primarily used for **subcuticular skin closure** - Not the first choice for deep tissue repair of complete perineal tears - Has faster absorption (90-120 days) which may not provide adequate support for sphincter repair *Incorrect: Catgut* - Catgut is a natural absorbable suture that was **historically used but is now largely obsolete** - **Higher tissue reaction**, increased infection risk, and unpredictable absorption make it unsuitable - Modern synthetic sutures like Vicryl have replaced catgut in current obstetric practice *Incorrect: Silk* - Silk is a **non-absorbable suture** that is inappropriate for perineal repair - Would require removal and carries risk of chronic foreign body reaction - Never used for internal structures in perineal reconstruction

Q: In which stage of cervical carcinoma is surgery performed to retain the possibility of conception?

Stage 1B1. ***Stage 1B1*** - In **Stage 1B1 cervical carcinoma** (FIGO 2018), the tumor size is **≤2 cm** and confined to the cervix, making it amenable to **fertility-sparing surgery** like radical trachelectomy. - This stage allows for removal of the cervix and parametrium while preserving the **uterine body** and ovaries, thus retaining the possibility of conception. - Strict selection criteria must be met including tumor size ≤2 cm, no lymphovascular space invasion, negative lymph nodes, and adequate follow-up compliance. *Stage 1B2* - **Stage 1B2** (FIGO 2018) involves tumors **>2 cm to ≤4 cm** but still confined to the cervix, which generally have a higher risk of recurrence and lymph node metastasis. - While fertility-sparing surgery might be considered in highly selective cases with tumors 2-3 cm, it is much less commonly performed than in Stage 1B1 due to the increased tumor burden and higher oncological risk. *Stage 2A* - In **Stage 2A cervical carcinoma**, the tumor has spread beyond the cervix to involve the upper two-thirds of the vagina (2A1: ≤4 cm, 2A2: >4 cm) but not the parametrium. - The disease extent typically necessitates more aggressive treatment such as radical hysterectomy or **chemoradiation**, precluding preservation of fertility in most cases. *Stage 2B* - **Stage 2B** involves tumor invasion into the **parametrium**, making fertility-sparing surgery contraindicated and typically requiring **definitive chemoradiation**. - The spread of cancer to the parametrium indicates a more advanced disease that cannot be adequately treated by methods that preserve fertility.

Q: All are symptoms of morphine withdrawal except?

Fall in BP. ***Fall in BP*** - **Hypotension (fall in BP)** is **not** typically a symptom of opioid withdrawal; rather, **hypertension** can occur due to sympathetic overdrive. - Opioid withdrawal symptoms are primarily characterized by **hyperactivity** and increased sympathetic nervous system activity. *Mydriasis* - **Mydriasis (dilated pupils)** is a classic symptom of opioid withdrawal, resulting from reduced parasympathetic tone and increased sympathetic activity. - In contrast, opioid intoxication causes **miosis (pinpoint pupils)**. *Yawning* - **Yawning** is a very common and early symptom of opioid withdrawal, often accompanied by feelings of fatigue and restlessness. - It reflects generalized **autonomic dysregulation** during withdrawal. *Lacrimation* - **Lacrimation (tearing)** is another prominent autonomic symptom of opioid withdrawal. - This, along with rhinorrhea, contributes to the **"flu-like" symptoms** experienced during withdrawal.

Q: What is the primary cause of a decubitus ulcer?

Prolonged pressure on the skin. ***Prolonged pressure on the skin*** - **Sustained pressure** on a bony prominence restricts blood flow, leading to **ischemia** and tissue death [1]. - This **impeded circulation** forms the direct cause of cell damage and ulcer formation [1]. *Due to trauma or injury* - While trauma can damage skin, a **decubitus ulcer** specifically results from **sustained pressure**, not typically from a single traumatic event. - Trauma usually leads to acute wounds, whereas pressure ulcers develop over time due to chronic tissue compromise. *Due to friction and shear forces* - **Friction** (skin rubbing against a surface) and **shear** (skin gliding over bone) contribute to decubitus ulcer development by damaging superficial vessels and tissues. - However, they are secondary factors that exacerbate the effects of **primary prolonged pressure**, rather than the initiating cause. *Due to moisture and immobility* - **Moisture** (e.g., from incontinence) macerates the skin, making it more susceptible to breakdown, and **immobility** prevents pressure relief. - These are significant **risk factors** that create an environment conducive to pressure ulcer formation, but the direct cause remains **sustained pressure** leading to ischemia.

Question 1

What is a significant disadvantage of ketamine?

Accepted Answer

Delirium

Answer

Increased heart rate

Answer

Increased ICT

Answer

All of the options

Question 2

Skin scraping and KOH mounting is primarily used to diagnose which of the following conditions?

Accepted Answer

Dermatophyte infection

Answer

Bacterial infection

Answer

Candidiasis

Answer

Herpes Simplex Virus (HSV)

Question 3

Commonest variety of compound presentation is?

Accepted Answer

Head with hand

Answer

Head with both feet

Answer

Head, hand & feet

Answer

Head with feet

Question 4

Which type of suture is primarily used for the repair of a complete perineal tear?

Accepted Answer

Vicryl

Answer

Monocryl

Answer

Catgut

Answer

Silk

Question 5

Which of the following actions should be avoided during the delivery of an Rh-negative mother?

Accepted Answer

Gently perform manual removal of placenta if necessary

Answer

Withhold ergometrine until after anterior shoulder delivery

Answer

Administer IV fluids

Answer

Apply fundal pressure during second stage of labor

Question 6

In which stage of cervical carcinoma is surgery performed to retain the possibility of conception?

Accepted Answer

Stage 1B1

Answer

Stage 1B2

Answer

Stage 2A

Answer

Stage 2B

Question 7

What is the management of eclampsia at 34 weeks of pregnancy?

Accepted Answer

Administer antihypertensives, anticonvulsants, and consider termination of pregnancy.

Answer

Continue convulsions and wait for 37 weeks to complete.

Answer

Wait for spontaneous labor.

Answer

Continue blood pressure management.

Question 8

All are symptoms of morphine withdrawal except?

Accepted Answer

Fall in BP

Answer

Yawning

Answer

Lacrimation

Answer

Mydriasis

Question 9

Which of the following statements about Selective Estrogen Receptor Modulators (SERMs) is correct?

Accepted Answer

Some SERMs can act as both agonists and antagonists on estrogen receptors.

Answer

Act as agonists on estrogen receptors.

Answer

Used to reduce the risk of hot flushes and thromboembolism.

Answer

Act as antagonists on estrogen receptors.

Question 10

What is the primary cause of a decubitus ulcer?

Accepted Answer

Prolonged pressure on the skin

Answer

Due to friction and shear forces

Answer

Due to trauma or injury

Answer

Due to moisture and immobility

NEET-PG 2013

Anesthesiology

Dermatology

Obstetrics and Gynecology

Pharmacology

Surgery