Drain Management — MCQs
The ideal treatment for hemothorax with drainage greater than 200 ml/hr for 2-4 hours is:
For shock patient, best guideline to check for adequacy of fluid replacement therapy:
What condition is classified using the Milwaukee classification?
All are true about tracheostomy tube except -
True about anesthesia machine – a) Cylinder is a part of high pressure system b) O2 flush delivers < 35 lit c) O2 flush delivers > 35 lit d) Pipeline is a part of low pressure system
What is the treatment of choice for a post-operative abscess?
What is the calculated fluid requirement for treating dehydration and maintenance over a 4-hour period in a 14 kg, 14-month-old child with a 4-day history of loose stools, decreased urine output, delayed skin pinch, sunken eyes, and dry mucosa?
Hose pipe appearance of intestine is a feature of
On the 4th postoperative day of laparotomy a patient presents with bleeding & oozing from the wound. Management is :
In a case of perforation peritonitis treated with emergency laparotomy, a patient develops oliguria on the 2nd postoperative day. Most likely diagnosis is:
Drain Management Indian Medical PG Practice Questions and MCQs
Question 1: The ideal treatment for hemothorax with drainage greater than 200 ml/hr for 2-4 hours is:
- A. Intercostal tube
- B. Wait and watch
- C. Needle aspiration
- D. Open thoracotomy with ligation of vessels (Correct Answer)
Explanation: **Open thoracotomy with ligation of vessels** - A **hemothorax** with continued blood loss exceeding **200 ml/hr for 2-4 hours** (or initial drainage >1500 ml) indicates significant ongoing bleeding that necessitates immediate surgical intervention per **ATLS guidelines**. - **Open thoracotomy** allows direct visualization of the bleeding source, enabling **ligation of vessels** to achieve definitive hemostasis. - This is a critical indication for emergency thoracotomy to prevent exsanguination and cardiovascular collapse. *Intercostal tube* - While an intercostal tube (chest tube) is the **initial management** for hemothorax and essential for diagnosis, persistent large-volume bleeding (>200 ml/hr for 2-4 hours) indicates the drain alone is insufficient to control hemorrhage. - It serves as both a diagnostic and therapeutic tool for initial drainage but does not address significant arterial or venous bleeding requiring operative control. *Wait and watch* - **Waiting and watching** in the presence of persistent significant blood loss (>200 ml/hr for 2-4 hours) is dangerous and can lead to **hypovolemic shock**, coagulopathy, or death. - This approach is inappropriate for active, ongoing bleeding and is reserved only for stable, small hemothoraces with minimal or resolved bleeding. *Needle aspiration* - **Needle aspiration** is used for diagnostic purposes in pleural effusions or small pneumothoraces, not for significant hemothorax management. - It is completely ineffective for draining large-volume **hemothoraces** and cannot control active bleeding from damaged vessels.
Question 2: For shock patient, best guideline to check for adequacy of fluid replacement therapy:
- A. Central Venous Pressure
- B. Urine output (Correct Answer)
- C. Hemoglobin
- D. Blood pressure and pulse
Explanation: Detailed assessment of a shock patient involves monitoring multiple parameters to guide fluid therapy. ***Urine output*** is a sensitive indicator of **renal perfusion** and overall tissue perfusion, reflecting the adequacy of fluid resuscitation [1]. A target urine output of **0.5-1 mL/kg/hour** is generally used in shock patients to ensure sufficient organ perfusion. *Central Venous Pressure* - **Central Venous Pressure (CVP)** can be a misleading indicator of fluid status, as it reflects right atrial pressure and not necessarily ventricular preload or cardiac output [1]. - While it provides some information, it has limitations as a sole measure for guiding fluid resuscitation due to its poor correlation with **volume responsiveness**, and certain conditions like pulmonary hypertension may raise CVP even in hypovolemia [1]. *Hemoglobin* - **Hemoglobin** levels primarily reflect the oxygen-carrying capacity of the blood and are crucial for diagnosing **anemia** or assessing **blood loss**. - It does not directly indicate the adequacy of fluid volume or tissue perfusion, especially in cases of distributive or cardiogenic shock without significant hemorrhage. *Blood pressure and pulse* - **Blood pressure** and **pulse rate** are important vital signs for assessing the initial response to fluid resuscitation and the presence of shock [1]. - However, they can be maintained within normal limits by compensatory mechanisms even in ongoing hypoperfusion (**compensated shock**), making them less reliable as a sole indicator of adequate fluid replacement [1].
Question 3: What condition is classified using the Milwaukee classification?
- A. Sphincter of Oddi dysfunction (Correct Answer)
- B. Pancreaticobiliary duct junction abnormalities
- C. Pancreatitis due to sphincter dysfunction
- D. Chronic pancreatitis due to sphincter dysfunction
Explanation: ***Sphincter of Oddi dysfunction*** - The **Milwaukee classification** is specifically used to categorize **sphincter of Oddi dysfunction (SOD)** into different types based on clinical, laboratory, and manometric findings. - This classification helps in guiding treatment decisions and predicting outcomes for patients with SOD [1]. *Pancreaticobiliary duct junction abnormalities* - These are **structural anomalies** of the junction between the pancreatic and bile ducts, not directly classified by the Milwaukee system. - While they can lead to symptoms similar to SOD, their diagnosis relies on imaging rather than the criteria used in the Milwaukee classification. *Pancreatitis due to sphincter dysfunction* - This describes a potential **consequence** of sphincter of Oddi dysfunction, particularly Type I and Type II SOD, but it is not the condition itself that the Milwaukee classification categorizes [1]. - The classification assesses the dysfunction of the sphincter, which *can* lead to pancreatitis, but the pancreatitis itself is a complication. *Chronic pancreatitis due to sphincter dysfunction* - This is a **long-term outcome** or complication that can arise from sustained sphincter of Oddi dysfunction. - The Milwaukee classification is used to define the nature of the sphincter dysfunction, not the resulting chronic pancreatitis itself.
Question 4: All are true about tracheostomy tube except -
- A. Jackson's tube has 2 lumens
- B. Removal of metallic tube in every 2-3 days (Correct Answer)
- C. Cuffed tube is used to prevent aspiration of pharyngeal secretion
- D. Made up of silver or stainless steel
Explanation: ***Removal of metallic tube in every 2-3 days*** - This statement is **false**. Metallic tracheostomy tubes, particularly Jackson tubes, are designed for **long-term placement** and typically remain in situ for extended periods (weeks to months). - The inner cannula is removed regularly for cleaning, but the outer metallic tube itself is not removed every 2-3 days as this would cause unnecessary trauma to the stoma. - Regular cleaning of the inner cannula maintains airway hygiene without disturbing the outer tube. *Made up of silver or stainless steel* - This statement is **true**. Traditional Jackson tracheostomy tubes are made of **silver**, which provides excellent durability, biocompatibility, and antimicrobial properties. - Modern metallic tubes may also be made of **stainless steel**, which can be sterilized and reused. - These materials have smooth surfaces that minimize tissue irritation and allow for long-term use. *Jackson's tube has 2 lumens* - This statement is **true**. Jackson tracheostomy tubes have a **double lumen design** consisting of an outer cannula that remains in the stoma and an **inner cannula** that can be removed for cleaning. - This design allows for maintenance of airway hygiene without disturbing the outer cannula, reducing the risk of accidental decannulation and stoma trauma. *Cuffed tube is used to prevent aspiration of pharyngeal secretion* - This statement is **true**. **Cuffed tracheostomy tubes** have an inflatable cuff that creates a seal in the trachea, primarily to **prevent aspiration** of oropharyngeal secretions and gastric contents into the lower respiratory tract. - The cuff also ensures effective positive pressure ventilation by preventing air leakage around the tube during mechanical ventilation.
Question 5: True about anesthesia machine – a) Cylinder is a part of high pressure system b) O2 flush delivers < 35 lit c) O2 flush delivers > 35 lit d) Pipeline is a part of low pressure system
- A. bc
- B. a
- C. ad
- D. ac (Correct Answer)
Explanation: ***ac*** - **Cylinder** is indeed a component of the **high-pressure system** of an anesthesia machine, holding gases under high pressure before regulation. - The **O2 flush valve** bypasses the flowmeters and vaporizers, delivering a high flow of oxygen, typically **35-75 L/min**, to the common gas outlet. *bc* - This option is incorrect because while the O2 flush delivers a high flow, stating it delivers **< 35 L/min** is inaccurate; it typically delivers significantly more. - The implication that both b and c are correct cannot be true as they are contradictory (O2 flush cannot deliver both < 35 L/min and > 35 L/min simultaneously). *a* - This option is partially correct as the **cylinder** is part of the high-pressure system, but it omits the correct information about the O2 flush. - It does not account for the accurate statement regarding the flow rate of the O2 flush. *ad* - While the **cylinder** is correctly identified as part of the high-pressure system, the statement that the **pipeline** is part of the **low-pressure system** is incorrect; pipelines are part of the high-pressure system. - The low-pressure system begins after the flowmeters, encompassing components like the vaporizers and the common gas outlet.
Question 6: What is the treatment of choice for a post-operative abscess?
- A. Hydration
- B. IV antibiotics
- C. Image guided aspiration (Correct Answer)
- D. Reexploration
Explanation: ***Image-guided aspiration*** - This is often the **first-line treatment** for a post-operative abscess, especially if it is well-localized. - It involves **draining the pus** under imaging guidance, relieving pressure and removing the infectious material. *Hydration* - While important for overall patient management, especially in cases of infection or sepsis, **hydration alone does not treat an abscess**. - It is a supportive measure but does not address the **localized collection of pus**. *IV antibiotics* - Antibiotics are typically indicated as an **adjunct to drainage**, especially in cases of systemic infection or cellulitis. - However, **antibiotics alone are often insufficient** to resolve an abscess as they have difficulty penetrating the necrotic core and thick capsule. *Reexploration* - **Surgical reexploration** is a more invasive option usually reserved for abscesses that are **large, multiloculated, not amenable to percutaneous drainage**, or when initial drainage attempts fail. - It carries greater risks and is not the initial treatment of choice for every post-operative abscess.
Question 7: What is the calculated fluid requirement for treating dehydration and maintenance over a 4-hour period in a 14 kg, 14-month-old child with a 4-day history of loose stools, decreased urine output, delayed skin pinch, sunken eyes, and dry mucosa?
- A. 1050 ml (Correct Answer)
- B. 700 ml
- C. 1200 ml
- D. 2000 ml
Explanation: ***1050 ml*** - This calculation includes **dehydration correction** (70-75 ml/kg for severe dehydration over 4 hours: 14 kg × 75 ml/kg = 1050 ml) and **maintenance fluid** (14 kg requires 50 ml/hour by Holiday-Segar: 50 ml/hr × 4 hours = 200 ml), but in **severe dehydration**, the initial rapid rehydration phase prioritizes deficit correction. - The child exhibits signs of **severe dehydration** (decreased urine output, delayed skin pinch, sunken eyes, dry mucosa), indicating 7-10% fluid loss requiring **Plan C (IV rehydration)** per WHO/IAP guidelines. - **Standard protocol:** 100 ml/kg total over 6 hours (30 ml/kg in first 1 hour, then 70 ml/kg over next 5 hours). For a 4-hour calculation, approximately 75 ml/kg (1050 ml) addresses the urgent deficit while allowing gradual correction. *1200 ml* - This represents the full calculated amount including both **deficit replacement** and **maintenance fluid** (1050 ml + 200 ml ≈ 1250 ml). - While mathematically close, administering this volume over only 4 hours might be **too rapid** for a severely dehydrated child, increasing risk of complications. - The question specifically asks for 4-hour management, where **deficit correction takes priority** over full maintenance addition. *700 ml* - This volume represents only **50 ml/kg**, which is significantly **insufficient** for severe dehydration (requires 100 ml/kg total). - Would be appropriate for **moderate dehydration** (5-7% deficit) but inadequate for this child's clinical presentation. - Administering only 700 ml would lead to **persistent dehydration** and worsening clinical status. *2000 ml* - This amount (143 ml/kg) would result in **gross overhydration**, potentially causing life-threatening complications like **pulmonary edema**, **cerebral edema**, or **heart failure**. - Exceeds the standard 100 ml/kg deficit by nearly 50%, with excessive volume administered too rapidly. - Represents dangerous **fluid overload** for a 14 kg child with severe dehydration.
Question 8: Hose pipe appearance of intestine is a feature of
- A. Malabsorption syndrome
- B. Ulcerative colitis (Correct Answer)
- C. Crohn's disease
- D. Hirschsprung disease
Explanation: ***Crohns disease*** - The **hose pipe appearance** of the intestine on imaging is due to **transmural inflammation** and **strictures**, characteristic of Crohn's disease [1]. - This feature indicates a **narrowed lumen** due to fibrosis, often affecting the small intestine or colon [1]. *Malabsorption syndrome* - This condition is primarily associated with **nutrient absorption issues**, not structural changes in the intestine. - It typically presents with **diarrhea**, **weight loss**, and **malnutrition**, lacking the characteristic imaging findings. *Ulcerative colitis* - Usually presents with **continuous lesions** confined to the colonic mucosa, leading to ulcers and inflammation but not a **hose pipe appearance**. - Symptoms include **bloody diarrhea** and **abdominal pain**, distinctly different from Crohn's disease. *Hirsprung disease* - A congenital condition causing **intestinal obstruction** due to the absence of ganglion cells, leading to **dilated proximal bowel** rather than a hose pipe appearance. - Typically presents in infants with **severe constipation** and **abdominal distension**, unrelated to imaging features seen in Crohn's disease. **References:** [1] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Alimentary System Disease, pp. 366-367.
Question 9: On the 4th postoperative day of laparotomy a patient presents with bleeding & oozing from the wound. Management is :
- A. Send for USG abdomen
- B. Start treatments for peritonitis
- C. IV fluids
- D. Dressing of wound & observe for dehiscence (Correct Answer)
Explanation: ***Dressing of wound & observe for dehiscence*** - **Bleeding and oozing from the wound** on the 4th postoperative day could indicate early wound dehiscence or a seroma/hematoma. - **Dressing the wound** provides local control, while diligent observation is crucial to detect progressive dehiscence requiring surgical intervention. *Send for USG abdomen* - An **ultrasound (USG) abdomen** would be useful for assessing intra-abdominal collections such as abscesses or hematomas, or to detect an incisional hernia, but not the immediate bleeding and oozing from the wound site itself. - While it might provide additional information, it's not the **first-line management** for local wound issues like bleeding and oozing. *Start treatments for peritonitis* - **Peritonitis** presents with signs of severe abdominal infection, such as fever, generalized abdominal pain, rigidity, and rebound tenderness, which are not described in the patient's presentation of only local wound bleeding and oozing. - Initiating peritonitis treatment without signs of widespread infection would be **inappropriate** and delay appropriate wound care. *IV fluids* - **Intravenous (IV) fluids** are used to manage dehydration, electrolyte imbalances, or hypovolemia, but the patient's primary complaint is localized wound bleeding and oozing, not systemic signs of instability requiring fluid resuscitation at this stage. - While **fluid balance** is always important postoperatively, it is not the specific management for the described wound issue.
Question 10: In a case of perforation peritonitis treated with emergency laparotomy, a patient develops oliguria on the 2nd postoperative day. Most likely diagnosis is:
- A. Catheter obstruction
- B. Severe UTI
- C. Dehydration (Correct Answer)
- D. Fluid retention
Explanation: ***Dehydration*** - **Perforation peritonitis** is a severe inflammatory condition that causes massive **fluid shifts** and third-spacing into the peritoneal cavity. This leads to profound intravascular depletion even after initial resuscitation. - Oliguria on the second postoperative day is a common sign of **inadequate fluid resuscitation** or ongoing fluid loss, as the body attempts to conserve remaining intravascular volume in response to hypovolemia. *Catheter obstruction* - While catheter obstruction can cause immediate oliguria, it typically presents with **bladder discomfort** and potentially **suprapubic distension**, which are not mentioned here. - It's a mechanical issue that would manifest shortly after insertion or when a blockage occurs, not necessarily two days post-surgery in the context of major fluid shifts. *Severe UTI* - A severe **urinary tract infection (UTI)** might cause symptoms like fever, dysuria, and urinary urgency, but generally does not directly lead to acute **oliguria** in the absence of severe **sepsis** causing acute kidney injury, which is not the primary mechanism given the clinical scenario of peritonitis and surgery. - Oliguria due to UTI would typically involve significant kidney involvement (pyelonephritis) or sepsis, which is a less direct cause than dehydration in this context. *Fluid retention* - **Fluid retention** usually leads to **edema** and possibly **polyuria** if the kidneys are functioning, rather than oliguria. - Oliguria, by definition, is reduced urine output, which is the opposite of what would be expected with fluid retention unless it is due to severe renal impairment.
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