Inpatient Procedures — MCQs
Examine the abdominal X-ray shown. What is the most likely diagnosis based on the findings?
MC late complication of central venous line is:
Which of the following is the most appropriate initial test for the diagnosis of ascites?
Which of the following does not require a lumbar puncture in children?
A 10yr old boy with a known case of nephrotic syndrome since 4 years on treatment brought to the pediatric OPD with chief complaint of difficulty in breathing. There is no history of fever. On examination, respiratory system was normal except slightly reduced breath sounds on right infra-axillary region. Paediatrician thinks of pleural effusion. What is next best modality of investigation to detect pleural effusion?
Which of the following causes the majority of UTIs in hospitalized patients?
A patient with known cirrhosis presents with jaundice and abdominal distention. Ultrasound reveals ascites and splenomegaly. What is the most likely cause of his ascites?
Which of the following is the most effective diagnostic test to differentiate between central and peripheral cyanosis in a patient with hypoxia?
A 20-year-old chronic alcoholic presents with severe hematemesis. USG shows distension of portal vein and the liver appears hyperechoic. Pantoprazole has been initiated. What is the next step in management?
Which of the following is not typically associated with allergic pulmonary aspergillosis?
Inpatient Procedures Indian Medical PG Practice Questions and MCQs
Question 1: Examine the abdominal X-ray shown. What is the most likely diagnosis based on the findings?
- A. Small bowel ileus
- B. Pneumoperitoneum
- C. Intestinal Obstruction (Correct Answer)
- D. Large bowel obstruction
Explanation: ***Intestinal Obstruction*** - The abdominal X-ray demonstrates **distended loops of bowel** with **multiple air-fluid levels**, which are classic radiographic signs of intestinal obstruction. - The presence of multiple, wide air-fluid levels visible in a **stepladder pattern** is a hallmark of bowel obstruction. - **Valvulae conniventes** (transverse folds crossing the entire width of bowel) suggest **small bowel** involvement when visible with distension. *Small bowel ileus* - While ileus can show distended bowel loops, it typically presents with **gas distributed throughout the small and large bowel** without a clear transition point. - Ileus shows **less pronounced air-fluid levels** and lacks the characteristic stepladder pattern seen in mechanical obstruction. - The clinical context and presence of multiple distinct air-fluid levels favor mechanical obstruction over ileus. *Large bowel obstruction* - Large bowel obstruction would show **dilated colon** with **haustrations** (incomplete folds that don't cross the entire lumen). - The obstruction would typically show dilation **proximal to the obstruction** with collapsed bowel distally. - The pattern in this image is more consistent with small bowel or generalized intestinal obstruction rather than isolated large bowel obstruction. *Pneumoperitoneum* - Pneumoperitoneum (free air in the peritoneal cavity) appears as **air under the diaphragm** on upright films or as **Rigler's sign** (both sides of bowel wall visible) on supine films. - This is a sign of **bowel perforation**, not obstruction with air-fluid levels within the bowel lumen. - The air-fluid levels seen here are **intraluminal**, not free intraperitoneal air.
Question 2: MC late complication of central venous line is:
- A. Sepsis (Correct Answer)
- B. Thromboembolism
- C. Cardiac arrhythmias
- D. Air embolism
Explanation: **Sepsis** - **Catheter-related bloodstream infections (CRBSIs)** are the most common late complication of central venous lines, leading to sepsis [1]. - The risk of sepsis increases with the **duration** of catheter placement, frequency of line access, and inadequate aseptic technique [1]. *Air embolism* - An **air embolism** is typically an immediate or early complication during insertion or removal of the central line, or connection/disconnection of administration sets. - It is not considered a late complication as it occurs due to a sudden entry of air into the venous system. *Thromboembolism* - While **thrombosis** can complicate central venous lines, leading to potential thromboembolism, it is less common than sepsis as a late complication [2]. - The formation of a thrombus is often localized to the catheter tip or vessel wall and may or may not lead to a symptomatic embolism [2]. *Cardiac arrhythmias* - **Cardiac arrhythmias** can occur during central venous line insertion if the guidewire or catheter tip irritates the myocardium, making it an immediate or early complication. - This is usually a transient event and not a long-term or late complication associated with the mere presence of the catheter.
Question 3: Which of the following is the most appropriate initial test for the diagnosis of ascites?
- A. CT scan of the abdomen
- B. Abdominal X-ray
- C. Abdominal ultrasound (Correct Answer)
- D. Paracentesis
Explanation: ***Abdominal ultrasound*** - An abdominal ultrasound is the **most appropriate initial test** for diagnosing ascites due to its high sensitivity for detecting fluid, non-invasiveness, and cost-effectiveness [1]. - It can identify even small amounts of **peritoneal fluid** and often helps determine the underlying cause by evaluating the liver and other abdominal organs [1]. *CT scan of the abdomen* - While a CT scan can detect ascites, it is generally **not the initial diagnostic test of choice** due to higher cost and radiation exposure [1]. - It is typically reserved for cases where ultrasound findings are equivocal or when further characterization of abdominal pathology is needed [1]. *Abdominal X-ray* - An abdominal X-ray has **poor sensitivity** for detecting ascites, especially small to moderate amounts of fluid. - It primarily identifies features like **bowel gas patterns** or calcifications and is not adequate for confirming fluid accumulation. *Paracentesis* - Paracentesis is a **diagnostic and therapeutic procedure** used to analyze ascitic fluid, not the initial imaging test for diagnosis. - It is performed after ascites has been detected (often by ultrasound) to determine its **etiology** (e.g., infection, malignancy) or to relieve symptoms.
Question 4: Which of the following does not require a lumbar puncture in children?
- A. HL (Correct Answer)
- B. AML
- C. NHL
- D. ALL
Explanation: ***HL*** - While central nervous system (CNS) involvement is possible in Hodgkin lymphoma (HL), it is **rare** and does not routinely warrant a **lumbar puncture** for initial staging or surveillance in asymptomatic children. - HL primarily affects **lymph nodes** and the **spleen**, with CNS spread being an uncommon complication that typically presents with specific neurological symptoms. *AML* - **Acute myeloid leukemia (AML)** has a significant risk of **CNS involvement**, requiring a **lumbar puncture** for diagnostic staging and administration of intrathecal chemotherapy. - CNS prophylaxis and treatment are crucial in AML to prevent and manage **leptomeningeal disease**. *NHL* - **Non-Hodgkin lymphoma (NHL)**, particularly aggressive subtypes like Burkitt lymphoma or lymphoblastic lymphoma, has a **high propensity for CNS spread**. - A **lumbar puncture** is essential for staging to detect CNS involvement and guide the need for intrathecal chemotherapy or radiation. *ALL* - **Acute lymphoblastic leukemia (ALL)** carries a well-documented **high risk of CNS infiltration**, necessitating routine **lumbar punctures** at diagnosis for CNS staging and throughout treatment for intrathecal chemotherapy. - CNS prophylaxis is a cornerstone of ALL treatment to prevent **leptomeningeal relapse**.
Question 5: A 10yr old boy with a known case of nephrotic syndrome since 4 years on treatment brought to the pediatric OPD with chief complaint of difficulty in breathing. There is no history of fever. On examination, respiratory system was normal except slightly reduced breath sounds on right infra-axillary region. Paediatrician thinks of pleural effusion. What is next best modality of investigation to detect pleural effusion?
- A. Lateral view Chest X-ray
- B. USG (Correct Answer)
- C. Erect Chest X-ray PA view
- D. Lateral decubitus view
Explanation: ***USG*** - **Ultrasound** is the **best first-line investigation** for detecting **pleural effusions** in children due to its **non-invasive nature**, lack of radiation exposure, and ability to detect even small effusions (as little as 5-10 mL). - It can effectively differentiate between pleural fluid and other pathologies (e.g., consolidation, masses) and guide aspiration if needed. - **Real-time bedside availability** makes it ideal for pediatric patients. *Lateral view Chest X-ray* - A lateral Chest X-ray only detects pleural effusion if the fluid volume is at least **75-100 mL**, which might miss smaller effusions. - While it can provide additional information about the lungs and mediastinum, it is not as sensitive as ultrasound for detecting small effusions. *Erect Chest X-ray PA view* - An erect Chest X-ray PA view requires a minimum of **200-300 mL of fluid** to blunt the **costophrenic angle**, potentially missing smaller effusions. - It involves **ionizing radiation**, a concern in pediatric patients, and is less sensitive than ultrasound for early detection. *Lateral decubitus view* - A lateral decubitus view is useful for confirming the presence of **free-flowing pleural fluid** and differentiating it from loculated effusions, typically after an initial effusion is suspected. - While sensitive for detecting small effusions (as little as **50 mL**), it is typically performed as a secondary investigation and involves radiation exposure, unlike ultrasound.
Question 6: Which of the following causes the majority of UTIs in hospitalized patients?
- A. Inadequate perineal care
- B. Invasive procedures (Correct Answer)
- C. Lack of fluid intake
- D. Immunosuppression
Explanation: ***Invasive procedures*** - The use of **urinary catheters** or other urological interventions significantly increases the risk of UTIs in hospitalized patients by providing a direct route for bacteria to enter the bladder [1]. - Catheter-associated UTIs (**CAUTIs**) are the most common type of healthcare-associated infection and are predominantly linked to invasive procedures [1]. *Inadequate perineal care* - While poor perineal hygiene can contribute to UTIs, it is typically a less significant factor than invasive procedures in the hospitalized setting, where **catheterization** is a major risk. - Good perineal care is important but cannot fully mitigate the risk introduced by **indwelling catheters**. *Lack of fluid intake* - Insufficient fluid intake can lead to concentrated urine, which may increase the risk of UTI in general, but it is not the primary cause of UTIs in **hospitalized patients**. [2] - **Urine stasis** due to mechanical obstruction or poor bladder emptying (often associated with catheters) is a greater factor than simply reduced fluid intake. *Immunosuppression* - Immunosuppression can increase susceptibility to infections, including UTIs, but it is not the leading cause of UTIs in most hospitalized patients. - The **direct introduction of bacteria** during invasive procedures more commonly bypasses the body's natural defenses, even in immunocompetent individuals.
Question 7: A patient with known cirrhosis presents with jaundice and abdominal distention. Ultrasound reveals ascites and splenomegaly. What is the most likely cause of his ascites?
- A. Portal hypertension (Correct Answer)
- B. Peritoneal carcinomatosis
- C. Nephrotic syndrome
- D. Congestive heart failure
Explanation: ***Portal hypertension*** - In cirrhosis, **fibrosis** and **regenerative nodules** increase resistance to blood flow through the liver, leading to **portal hypertension** [1]. - This increased pressure in the portal venous system, combined with **splanchnic vasodilation** and **renal sodium retention**, drives the transudation of fluid into the peritoneal cavity, forming ascites [1]. *Peritoneal carcinomatosis* - This would typically result in **exudative ascites**, often with a high protein content and positive cytology for malignant cells [1]. - While it can cause abdominal distention, it is not directly linked to the pathology of **cirrhosis** and **splenomegaly** as the primary cause of ascites in this context. *Nephrotic syndrome* - Characterized by **massive proteinuria**, **hypoalbuminemia**, and **generalized edema**, including ascites. - While it causes fluid retention, the clinical picture of **jaundice** and **splenomegaly** strongly points to liver pathology rather than primary renal disease [1]. *Congestive heart failure* - Can cause **dependent edema** and ascites due to elevated systemic venous pressures, but typically presents with other signs like **dyspnea**, orthopnea, and pulmonary edema [1]. - The patient's history of **cirrhosis** and the presence of **splenomegaly** make portal hypertension a significantly more likely cause of ascites [1].
Question 8: Which of the following is the most effective diagnostic test to differentiate between central and peripheral cyanosis in a patient with hypoxia?
- A. Arterial blood gas analysis (Correct Answer)
- B. Pulse oximetry
- C. Chest X-ray
- D. Electrocardiogram
Explanation: ***Arterial blood gas analysis*** - An **arterial blood gas (ABG)** can definitively measure the **partial pressure of oxygen (PaO2)** and **oxygen saturation (SaO2)**, which are crucial for differentiating the physiological causes of hypoxia leading to central versus peripheral cyanosis [2]. - In **central cyanosis**, both PaO2 and SaO2 are low, indicating inadequate oxygenation of arterial blood, whereas in **peripheral cyanosis**, SaO2 might be relatively normal in arterial blood, but tissue extraction of oxygen is increased. *Pulse oximetry* - **Pulse oximetry** measures **peripheral oxygen saturation (SpO2)**, which estimates arterial oxygen saturation [1]. - While useful for detecting hypoxemia, it doesn't provide information on PaO2, nor can it reliably differentiate between true arterial desaturation (central cyanosis) and local circulatory issues leading to increased oxygen extraction (peripheral cyanosis), especially in conditions like **shock** or **vasoconstriction** where peripheral perfusion is compromised. *Chest X-ray* - A **chest X-ray** is a structural imaging test used to evaluate the lungs and heart for abnormalities that might cause hypoxemia [2]. - While it can identify potential causes of hypoxia (e.g., **pneumonia**, **pulmonary edema**), it does not directly measure oxygen levels or differentiate between central and peripheral cyanosis. *Electrocardiogram* - An **electrocardiogram (ECG)** measures the **electrical activity of the heart** and is used to diagnose cardiac arrhythmias, ischemia, or structural heart abnormalities [3]. - While cardiac issues can lead to hypoxia and cyanosis, an ECG doesn't directly assess oxygenation status or differentiate between central and peripheral cyanosis.
Question 9: A 20-year-old chronic alcoholic presents with severe hematemesis. USG shows distension of portal vein and the liver appears hyperechoic. Pantoprazole has been initiated. What is the next step in management?
- A. Administer IV fluids and electrolytes to stabilize hemodynamics
- B. Perform an endoscopy to identify and treat varices (Correct Answer)
- C. Order a liver biopsy to assess for fibrosis
- D. Initiate a course of broad-spectrum antibiotics
Explanation: **Perform an endoscopy to identify and treat varices** - Severe **hematemesis** in a chronic alcoholic with signs of **portal hypertension** (distended portal vein, hyperechoic liver) strongly suggests bleeding esophageal varices [1]. - **Endoscopy** is crucial for both diagnosing the source of bleeding and providing immediate therapeutic intervention, such as **variceal band ligation** or **sclerotherapy** [1]. *Administer IV fluids and electrolytes to stabilize hemodynamics* - While **hemodynamic stabilization with IV fluids** is an immediate and critical step in managing severe GI bleeding, it is not the *next step in definitive management* after pantoprazole initiation, which aims to address the *cause* of the bleeding. - This is an initial supportive measure, but addressing the source of hemorrhage is paramount once stabilization begins [1]. *Order a liver biopsy to assess for fibrosis* - A **liver biopsy** is primarily used for diagnosing the underlying cause and severity of liver disease, such as **cirrhosis** and **fibrosis**. - It is not an urgent procedure in the context of acute, severe hematemesis and would delay critical interventions to stop the bleeding. *Initiate a course of broad-spectrum antibiotics* - **Antibiotics** are indeed utilized in patients with cirrhosis and upper GI bleeding to prevent **spontaneous bacterial peritonitis** and other infections, often administered *after* hemodynamic stabilization and initial endoscopic management. - However, stopping the active bleeding is the immediate priority before initiating prophylactic antibiotics.
Question 10: Which of the following is not typically associated with allergic pulmonary aspergillosis?
- A. High IgE level
- B. Recurrent pneumonia (Correct Answer)
- C. Occurrence in patients with old cavitary lesions
- D. Pleural effusion
Explanation: ***Recurrent pneumonia*** - Allergic bronchopulmonary aspergillosis (ABPA) is characterized by a hypersensitivity reaction to *Aspergillus* antigens, leading to **bronchospasm** and **bronchiectasis**, not typically recurrent bacterial pneumonia. - While ABPA can cause **pulmonary infiltrates** that may be mistaken for pneumonia, these are eosinophilic and do not usually respond to antibiotics. *High IgE level* - **Elevated total serum IgE** is a hallmark diagnostic criterion for ABPA, reflecting the intense allergic response to *Aspergillus* antigens. - Specific **IgE and IgG antibodies to *Aspergillus*** are also typically present. *Occurrence in patients with old cavitary lesions* - This description is more characteristic of an **aspergilloma**, a fungal ball that forms in pre-existing lung cavities, often from tuberculosis or sarcoidosis. - ABPA is primarily a disease of **asthmatics** and **cystic fibrosis** patients, characterized by central bronchiectasis and mucous plugging. *Pleural effusion* - **Pleural effusions** are a rare manifestation in ABPA, which primarily affects the airways and lung parenchyma. - While other fungal infections can cause pleural effusions, it is not a typical feature of the allergic response seen in ABPA.
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