Outcomes and Benefits of ERAS — MCQs
Transection at mid-pons level with intact vagus results in:
A patient with a non-obstructing carcinoma of the sigmoid colon is being prepared for elective resection. To minimize the risk of postoperative infectious complications, what should be included in your planning?
Why is early mobilization important after hip arthroplasty?
Patients who need surgery within 24 hours are categorized under which color category in a disaster management triage?
The advantage of bladder drainage over enteric drainage after pancreatic transplantation is better monitoring of:
In trauma, which of the following hormones is/are increased? a) Epinephrine b) ACTH c) Glucagon d) Parathormone
Steps in review of patient's history during secondary survey of trauma care can be summarised as
A patient on long-term high-dose steroid therapy (prednisolone 20 mg/day for 6 months) is scheduled for major abdominal surgery. What is the most essential perioperative requirement?
A meta-analysis comparing ERAS versus traditional perioperative care shows 30% reduction in length of stay and 50% reduction in complications without increase in readmission rates. However, implementation costs are 20% higher initially. As a department head, how should you evaluate the adoption of ERAS protocol?
A hospital is designing an ERAS protocol for gynecological oncology surgery. Literature shows conflicting evidence about routine nasogastric tube (NGT) placement versus no NGT. Considering ERAS principles and risk-benefit analysis, which approach would be most appropriate and why?
Outcomes and Benefits of ERAS Indian Medical PG Practice Questions and MCQs
Question 1: Transection at mid-pons level with intact vagus results in:
- A. Apneusis
- B. Hyperventilation
- C. Irregular shallow breathing
- D. Deep and slow breathing (Correct Answer)
Explanation: ***Deep and slow breathing*** - A transection at the **mid-pons level** disconnects the **pneumotaxic center** from the medullary respiratory centers, while the **vagus nerves remain intact**. - Without the inhibitory input from the pneumotaxic center, inspirations become deep and prolonged due to the unopposed effect of the **apneustic center**, but the intact vagus still provides some inspiratory off-switch, preventing full apneusis. This leads to **deep and slow breathing**. *Apneusis* - **Apneusis**, characterized by prolonged inspiratory gasps, occurs when both the **pneumotaxic center and vagal afferents** (from lung stretch receptors) are non-functional or cut. - In this scenario, the vagus nerves are intact, providing an inspiratory off-switch that prevents the full development of apneusis. *Hyperventilation* - **Hyperventilation** typically results from metabolic acidosis, hypoxemia, or anxiety, leading to an increased rate and depth of breathing. - A mid-pons transection primarily affects the rhythm and duration of inspiration, not necessarily increasing the overall minute ventilation in a compensatory manner. *Irregular shallow breathing* - **Irregular shallow breathing** can be seen with damage to the **medullary respiratory centers** or severe respiratory muscle weakness. - The transection described primarily impacts the integration of pontine and medullary control, particularly the interaction between the apneustic and pneumotaxic centers, leading to deep and slow breaths, not shallow ones.
Question 2: A patient with a non-obstructing carcinoma of the sigmoid colon is being prepared for elective resection. To minimize the risk of postoperative infectious complications, what should be included in your planning?
- A. Postoperative administration for 5 to 7 days of parenteral antibiotics effective against aerobes and anaerobes
- B. A single preoperative parenteral dose of antibiotic effective against aerobes and anaerobes may provide initial coverage. (Correct Answer)
- C. Postoperative administration for 2 to 4 days of parenteral antibiotics effective against aerobes and anaerobes
- D. Avoidance of oral antibiotics to prevent emergence of Clostridioides difficile
Explanation: ***Single preoperative parenteral dose of antibiotic effective against aerobes and anaerobes*** - For **elective colorectal surgery**, a single dose of a **broad-spectrum parenteral antibiotic** administered within 60 minutes prior to incision is the standard of care to reduce surgical site infections. - This approach ensures adequate drug levels in the tissues during the period of potential bacterial contamination and is a cornerstone of modern surgical prophylaxis. - Current guidelines (WHO, SCIP) recommend a single preoperative dose, which may be redosed intraoperatively if the procedure is prolonged beyond 3-4 hours. *Avoidance of oral antibiotics to prevent emergence of Clostridioides difficile* - This is **incorrect**. **Oral antibiotics** (such as neomycin and metronidazole) are routinely used preoperatively in conjunction with mechanical bowel preparation for colorectal surgery to reduce intraluminal bacterial load. - The concern for *Clostridioides difficile* infection is generally low with short-term, targeted prophylactic antibiotic regimens compared to broad-spectrum, prolonged use. - The combination of oral and parenteral antibiotics has been shown to further reduce surgical site infections. *Postoperative administration for 5 to 7 days of parenteral antibiotics* - **Prolonged postoperative antibiotic administration** beyond 24 hours in uncomplicated cases is not recommended as it increases the risk of **antibiotic resistance**, *C. difficile* infection, and adverse drug reactions without additional benefit. - The goal of prophylactic antibiotics is to cover the period of contamination during surgery, not to treat presumed ongoing infection postoperatively. *Postoperative administration for 2 to 4 days of parenteral antibiotics* - While administration for up to 24 hours post-operatively may be considered in some high-risk cases, routine **prolonged postoperative antibiotics** (2-4 days) are unnecessary for most elective colorectal resections. - Evidence suggests that continuing antibiotics beyond the immediate perioperative period does not further reduce the incidence of **surgical site infections** in clean-contaminated surgeries.
Question 3: Why is early mobilization important after hip arthroplasty?
- A. Prevents joint stiffness
- B. Prevents DVT
- C. Reduces hospital stay
- D. All of the options (Correct Answer)
Explanation: ***All of the options*** - Early mobilization is crucial following hip arthroplasty as it offers a multifaceted approach to recovery, addressing **joint stiffness**, the risk of **DVT**, and the duration of **hospital stay**. - This comprehensive benefit highlights the importance of an integrated approach to postoperative care. *Prevents joint stiffness* - While early mobilization helps prevent joint stiffness, it is not the sole benefit, as it also addresses other critical postoperative complications. - Restricted movement in the initial postoperative period can lead to adhesions and **contractures**, limiting the long-term range of motion. *Prevents DVT* - Preventing **deep vein thrombosis (DVT)** is a significant benefit of early mobilization, but it represents only one aspect of its overall importance. - Immobility post-surgery increases the risk of blood clot formation due to venous stasis, making active movement essential. *Reduces hospital stay* - Reducing the length of hospital stay is a key advantage of early mobilization, but it's part of a broader set of benefits that contribute to faster recovery and better outcomes. - Expedited discharge is often a direct result of improved patient mobility, reduced complication rates, and enhanced surgical recovery.
Question 4: Patients who need surgery within 24 hours are categorized under which color category in a disaster management triage?
- A. Green
- B. Yellow (Correct Answer)
- C. Blue
- D. Black
Explanation: ***Yellow*** - Patients in the **yellow category** are those who require **significant medical attention** and intervention, such as surgery, but whose condition is stable enough to withstand a delay of a few hours up to 24 hours without immediate threat to life or limb. - This category indicates a **delayed but urgent need** for treatment, distinguishing them from immediate (red) or minor (green) cases. *Blue* - The color **blue** is generally **not a standard triage category** in most commonly used disaster protocols (e.g., START, JumpSTART). - Triage systems typically use red, yellow, green, and black to prioritize patients based on immediate medical need and prognosis. *Green* - The **green category** is for patients with **minor injuries** who are considered "walking wounded" and can often wait for treatment for several hours, sometimes up to a few days. - These individuals are **stable** and do not require immediate intervention to preserve life or limb. *Black* - The **black category** is reserved for individuals who are **deceased** or have injuries so severe that survival is unlikely given the available resources, often implying **palliative care** rather than active life-saving interventions in a mass casualty event. - This category signifies that resources would be better allocated to patients with a higher chance of survival.
Question 5: The advantage of bladder drainage over enteric drainage after pancreatic transplantation is better monitoring of:
- A. Amylase levels (Correct Answer)
- B. Glucose levels
- C. Electrolyte levels
- D. HBA1C levels
Explanation: ***Amylase levels*** - Bladder drainage allows for direct monitoring of **urinary amylase levels**, which serves as a sensitive indicator of pancreatic allograft rejection. A drop in urine amylase activity can quickly signal graft dysfunction or rejection. - This direct measurement in urine is not possible with enteric drainage, where pancreatic enzymes are diverted into the intestines. *Glucose levels* - **Blood glucose levels** are monitored similarly regardless of the drainage type. Both bladder and enteric drainage aim to normalize blood glucose by providing insulin-producing cells. - While pancreatic transplantation aims to normalize glucose, its monitoring is systemic and not specific to the drainage method. *Electrolyte levels* - Monitoring **serum electrolyte levels** is important in all transplant patients, but it is not a specific advantage of bladder drainage over enteric drainage. - Bladder drainage can, in some cases, lead to metabolic complications (e.g., metabolic acidosis due to bicarbonate loss), but this is a potential downside, not an advantage for monitoring per se. *HBA1C levels* - **HbA1c levels** reflect long-term glycemic control (over 2-3 months) and are monitored in both bladder and enteric drained recipients to assess overall success of the transplant in managing diabetes. - HbA1c is a chronic marker, while the advantage of bladder drainage lies in acute monitoring of graft function using amylase.
Question 6: In trauma, which of the following hormones is/are increased? a) Epinephrine b) ACTH c) Glucagon d) Parathormone
- A. bc
- B. acd
- C. bcd
- D. abc (Correct Answer)
Explanation: ***abc*** - Trauma is a significant stressor that triggers the release of **epinephrine** (a), **ACTH** (b), and **glucagon** (c) as part of the body's **fight-or-flight response** and metabolic adaptation. - **Epinephrine** increases heart rate, blood pressure, and mobilizes energy stores; **ACTH** stimulates cortisol release to manage stress and inflammation; **glucagon** mobilizes glucose to provide energy for tissues. - **Parathormone** (d) is NOT significantly increased in acute trauma as it primarily regulates calcium homeostasis, not the acute stress response. *bc* - This option is incomplete as **epinephrine** (a) is also significantly increased during trauma due to the activation of the sympathetic nervous system. - While **ACTH** and **glucagon** are elevated, failing to include epinephrine underestimates the full hormonal response to trauma. *acd* - This option incorrectly includes **parathormone** (d) as a primary hormone elevated in acute trauma. While calcium regulation is important, parathormone's immediate increase is not a hallmark of the acute stress response. - It also omits **ACTH** (b), which is a key hormone in the stress axis response. *bcd* - This option incorrectly includes **parathormone** (d) which does not typically show a significant immediate increase during acute trauma. - It also omits **epinephrine** (a), a crucial component of the acute stress response mediated by sympathetic activation.
Question 7: Steps in review of patient's history during secondary survey of trauma care can be summarised as
- A. TRIAGE
- B. ABCDE
- C. AMPLE (Correct Answer)
- D. None of the options
Explanation: ***AMPLE*** - The **AMPLE history** is a mnemonic used during the **secondary survey** in trauma care to gather crucial patient information - It stands for **Allergies, Medications, Past medical history/Pregnancy, Last meal, and Events** surrounding the injury. *TRIAGE* - **Triage** is the process of prioritizing patients based on the severity of their condition and the likelihood of benefit from immediate treatment. - It is an initial assessment done to determine the urgency of care, not a detailed historical review for a single patient. *ABCDE* - The **ABCDE approach** (**Airway, Breathing, Circulation, Disability, Exposure**) is part of the **primary survey** in trauma care. - It focuses on identifying and managing immediate life-threatening conditions. *None of the options* - This option is incorrect because **AMPLE** specifically describes the historical review process during the secondary survey.
Question 8: A patient on long-term high-dose steroid therapy (prednisolone 20 mg/day for 6 months) is scheduled for major abdominal surgery. What is the most essential perioperative requirement?
- A. Insulin only
- B. Hydrocortisone only (Correct Answer)
- C. Both
- D. None of the options
Explanation: ***Hydrocortisone only*** - Patients on chronic **high-dose steroid therapy** (>5 mg prednisolone daily for >3 weeks) are at risk of **adrenal insufficiency** during surgical stress due to suppression of the hypothalamic-pituitary-adrenal (HPA) axis. - **Hydrocortisone stress dose** (100 mg IV at induction, followed by 50 mg every 8 hours) is the **most essential and immediate requirement** to prevent **adrenal crisis** during major surgery. - Hydrocortisone has both glucocorticoid and mineralocorticoid activity, mimicking the body's natural cortisol response to surgical stress. *Insulin only* - While steroids can cause **hyperglycemia** requiring insulin management, this is a **secondary concern** compared to preventing life-threatening **adrenal crisis**. - Insulin addresses a metabolic complication but does not protect against **inadequate cortisol response** to surgical stress. - **Without stress-dose steroids**, the patient risks hemodynamic collapse regardless of glucose control. *Both* - Although **both** medications might eventually be needed if hyperglycemia develops, the question asks for the **most essential** requirement. - **Hydrocortisone is non-negotiable** and must be given prophylactically; insulin is only needed if blood glucose is elevated. - Prioritizing both equally misses the critical time-sensitive need for **adrenal axis support**. *None of the options* - This is incorrect because patients on chronic high-dose steroids undergoing major surgery **absolutely require stress-dose steroid coverage**. - Failure to administer hydrocortisone can result in **acute adrenal crisis** with severe hypotension, shock, and potential mortality. - Modern guidelines confirm the need for perioperative steroid supplementation in high-risk patients.
Question 9: A meta-analysis comparing ERAS versus traditional perioperative care shows 30% reduction in length of stay and 50% reduction in complications without increase in readmission rates. However, implementation costs are 20% higher initially. As a department head, how should you evaluate the adoption of ERAS protocol?
- A. Reject ERAS due to higher initial costs affecting hospital budget
- B. Wait for more evidence before implementation
- C. Adopt ERAS based on superior clinical outcomes and likely long-term cost savings from reduced complications (Correct Answer)
- D. Implement ERAS only for low-risk patients to minimize costs
Explanation: ***Adopt ERAS based on superior clinical outcomes and likely long-term cost savings from reduced complications*** - Significant reductions in **length of stay (30%)** and **complications (50%)** provide strong evidence for the clinical superiority of **ERAS protocols** over traditional care. - The initial 20% cost increase is often offset by **long-term savings** gained from fewer hospital days and reduced management of postoperative complications. *Reject ERAS due to higher initial costs affecting hospital budget* - Focusing solely on **upfront costs** ignores the substantial economic benefit derived from **resource optimization** and beds being freed faster. - High-value healthcare prioritizes **outcomes per dollar spent**, and ERAS typically demonstrates a high **return on investment**. *Wait for more evidence before implementation* - Current **meta-analysis data** already provides high-level evidence regarding its efficacy in improving **surgical recovery**. - Delaying implementation based on sufficient existing evidence prevents patients from accessing safer, **evidence-based clinical pathways**. *Implement ERAS only for low-risk patients to minimize costs* - **ERAS protocols** are designed to be multi-modal and often provide the greatest absolute benefit to **high-risk patients** who are prone to complications. - Restricting the protocol limits the overall **scale of improvement** in hospital-wide metrics like **readmission rates** and total surgical volume.
Question 10: A hospital is designing an ERAS protocol for gynecological oncology surgery. Literature shows conflicting evidence about routine nasogastric tube (NGT) placement versus no NGT. Considering ERAS principles and risk-benefit analysis, which approach would be most appropriate and why?
- A. Selective NGT placement only for symptomatic patients with postoperative nausea/vomiting (Correct Answer)
- B. Routine NGT placement as it prevents aspiration and monitors gastric output
- C. No NGT placement but prophylactic antiemetics to all patients
- D. NGT placement in all cases but removal within 6 hours postoperatively
Explanation: ***Selective NGT placement only for symptomatic patients with postoperative nausea/vomiting*** - **ERAS protocols** advocate against routine nasogastric decompression as it does not reduce the risk of **postoperative ileus** or **anastomotic leakage**. - Reserving **NGT placement** for patients who develop clinical symptoms like persistent vomiting or **gastric distension** minimizes risks and improves patient comfort. *Routine NGT placement as it prevents aspiration and monitors gastric output* - Studies show that routine usage actually increases **pulmonary complications** such as **pneumonia** and atelectasis due to interference with coughing. - It delays the return of **bowel function** and prolongs the time until a patient can tolerate an **oral diet**. *No NGT placement but prophylactic antiemetics to all patients* - While **prophylactic antiemetics** are a standard part of ERAS, this option incorrectly implies an absolute prohibition of NGT even when symptoms occur. - Clinical guidelines require the flexibility to use an **NGT as a rescue therapy** for patients with severe, refractory **gastric distension**. *NGT placement in all cases but removal within 6 hours postoperatively* - Even short-term placement can cause unnecessary **pharyngeal trauma** and severe **patient discomfort** during the immediate recovery phase. - Starting with an NGT in every patient contradicts the **evidence-based medicine** that suggests most oncology patients do not require decompression at all.
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