Swallowing assessment and management — MCQs

10 questions

A 58-year-old man comes to the physician for the evaluation of intermittent dysphagia for 6 months. He states that he drinks a lot of water during meals to help reduce discomfort he has while swallowing food. He has hypertension and gastroesophageal reflux disease. He has smoked one half-pack of cigarettes daily for 32 years. He does not drink alcohol. Current medications include hydrochlorothiazide and ranitidine. He is 173 cm (5 ft 8 in) tall and weighs 101 kg (222 lb); BMI is 33.7 kg/m2. His temperature is 37°C (98.6°F), pulse is 75/min, and blood pressure is 125/75 mm Hg. The lungs are clear to auscultation. Cardiac examination shows no murmurs, rubs, or gallops. The abdomen is soft and nontender. A barium esophagogram shows a smooth, circumferential narrowing at the distal esophagus. An upper endoscopy shows a sliding hiatal hernia and a thin mucosal ring at the gastroesophageal junction. Biopsies from the area show normal squamous and columnar epithelium with no dysplasia or malignancy. Which of the following is the most appropriate next step in the management of this patient?

A 49-year-old man presents to his primary care physician complaining of multiple symptoms. He states that over the past 8 months he has noticed voice changes and difficulty swallowing. The dysphagia started with just dry foods like crackers but has progressed to include smoothies and ice cream. He works as a newspaper editor and has also noticed trouble writing with his dominant hand. He is accompanied by his wife, who complains that he snores and drools in his sleep. His medical history is significant for hypertension and a bicuspid aortic valve. He takes hydrochlorothiazide. On physical examination, there is atrophy of the right hand. The patient’s speech is slow. A systolic murmur at the right upper sternal border is appreciated. Tapping of the left patellar tendon causes the patient’s left lower extremity to forcefully kick out. Stroking of the plantar aspect of the patient’s left foot causes his left toes to extend upward. Which of the following therapies is most likely to slow the progression of the patient’s symptoms?

A 55-year-old man presents to his primary care physician for trouble swallowing. The patient claims that he used to struggle when eating food if he did not chew it thoroughly, but now he occasionally struggles with liquids as well. He also complains of a retrosternal burning sensation whenever he eats. He also claims that he feels his throat burns when he lays down or goes to bed. Otherwise, the patient has no other complaints. The patient has a past medical history of obesity, diabetes, constipation, and anxiety. His current medications include insulin, metformin, and lisinopril. On review of systems, the patient endorses a 5 pound weight loss recently. The patient has a 22 pack-year smoking history and drinks alcohol with dinner. His temperature is 99.5°F (37.5°C), blood pressure is 177/98 mmHg, pulse is 90/min, respirations are 17/min, and oxygen saturation is 98% on room air. On physical exam, you note an overweight man in no current distress. Abdominal exam is within normal limits. Which of the following is the best next step in management?

A 72-year-old man is admitted to the hospital because of a 2-day history of right-sided weakness and dysphagia. He is diagnosed with a thrombotic stroke and treatment with aspirin is initiated. A videofluoroscopic swallowing study is performed to determine his ability to swallow safely; he is found to be at increased risk of aspiration. Consequently, he is ordered not to have any food or liquids by mouth. A Dobhoff feeding tube is placed, tube feedings are ordered, and the patient starts receiving tube feedings. Shortly after, he develops a cough and dyspnea. An x-ray of the chest shows opacification of the right lower lobe and that the end of the Dobhoff tube is in his right lung instead of his stomach. Which of the following would most likely have prevented this medical error from occurring?

A 73-year-old man comes to the physician because of a 4-kg (9-lb) weight loss over the last month. During this time he has not been able to eat more than one bite without coughing immediately and sometimes he regurgitates food through his nose. His symptoms are worse with liquids. One month ago he had a stroke in the right middle cerebral artery. He has a history of hypertension, type 2 diabetes mellitus, and hyperlipidemia. Current medications include aspirin, amlodipine, metformin, and simvastatin. Examination of the oropharynx, chest, and abdomen shows no abnormalities. Neurological examination shows facial drooping on the left and decreased strength in the left upper and lower extremities. Which of the following is the most appropriate next step in management?

A 48-year-old woman presents with acute stroke symptoms 18 hours ago. MRI shows a right MCA M1 occlusion with large penumbra on perfusion imaging (mismatch ratio >1.8) and small infarct core (25 mL). Her NIHSS is 16. She has no significant comorbidities. Her family is concerned about disability but wants to pursue treatment if reasonable chance of benefit exists. Synthesize the evidence and evaluate the treatment approach.

A 55-year-old man undergoes successful thrombectomy for left MCA occlusion. Post-procedure, he develops progressive lethargy and his blood pressure increases to 180/100 mmHg. CT shows hyperdensity in the treated territory without hemorrhage, and his symptoms worsen over 4 hours despite blood pressure control. Evaluate the most likely diagnosis and management priority.

An 80-year-old woman with atrial fibrillation presents 2 hours after acute ischemic stroke. NIHSS is 22. Imaging shows large left MCA territory infarction involving >1/3 of MCA territory with basilar artery occlusion. She lives alone but was independent before this event. Her family requests all possible interventions. Evaluate the management approach considering benefits versus risks.

A 58-year-old woman with history of TIA 3 weeks ago presents with acute ischemic stroke. Imaging reveals new right MCA infarction and severe (70-99%) symptomatic right carotid stenosis. She received alteplase 6 hours ago with partial improvement. Her NIHSS improved from 14 to 8. Analyze the optimal timing for carotid revascularization.

Q10

A 62-year-old man received IV alteplase 45 minutes ago for acute ischemic stroke. He now develops sudden severe headache, vomiting, and decreased level of consciousness. His blood pressure is 190/110 mmHg. Analyze the most critical immediate steps in management.

Swallowing assessment and management US Medical PG Practice Questions and MCQs

Question 1: A 58-year-old man comes to the physician for the evaluation of intermittent dysphagia for 6 months. He states that he drinks a lot of water during meals to help reduce discomfort he has while swallowing food. He has hypertension and gastroesophageal reflux disease. He has smoked one half-pack of cigarettes daily for 32 years. He does not drink alcohol. Current medications include hydrochlorothiazide and ranitidine. He is 173 cm (5 ft 8 in) tall and weighs 101 kg (222 lb); BMI is 33.7 kg/m2. His temperature is 37°C (98.6°F), pulse is 75/min, and blood pressure is 125/75 mm Hg. The lungs are clear to auscultation. Cardiac examination shows no murmurs, rubs, or gallops. The abdomen is soft and nontender. A barium esophagogram shows a smooth, circumferential narrowing at the distal esophagus. An upper endoscopy shows a sliding hiatal hernia and a thin mucosal ring at the gastroesophageal junction. Biopsies from the area show normal squamous and columnar epithelium with no dysplasia or malignancy. Which of the following is the most appropriate next step in the management of this patient?

A. Mechanical dilation (Correct Answer)
B. Iron supplementation
C. Esophageal stent
D. Esophagectomy
E. Nissen fundoplication

Explanation: ***Mechanical dilation*** - The patient's presentation with **intermittent dysphagia to solids**, a thin mucosal ring at the gastroesophageal junction on endoscopy, and a **smooth circumferential narrowing** on barium study is diagnostic of a **Schatzki ring** (B ring). - Biopsies showing **no dysplasia or malignancy** confirm this is a benign condition. - **Mechanical dilation** (pneumatic or bougie dilation) is the **first-line treatment** for symptomatic Schatzki rings, with success rates exceeding 90% and providing immediate symptom relief. - The procedure is safe, minimally invasive, and can be repeated if symptoms recur. *Iron supplementation* - **Plummer-Vinson syndrome** (iron deficiency anemia with esophageal webs in the upper esophagus) presents differently from this patient's distal esophageal ring. - There is no evidence of anemia in this case, and iron supplementation would not address the **mechanical obstruction**. *Esophageal stent* - Esophageal stents are reserved for **malignant strictures** or **refractory benign strictures** that fail multiple dilations. - This would be inappropriate as **first-line therapy** for a benign Schatzki ring and carries higher complication risks (migration, perforation). *Esophagectomy* - **Esophagectomy** is a major surgical procedure indicated for **esophageal cancer** or end-stage benign disease (e.g., severe caustic injury, refractory achalasia with megaesophagus). - This is **grossly excessive** for a benign Schatzki ring, which responds well to simple dilation. *Nissen fundoplication* - **Nissen fundoplication** treats **severe GERD** by creating an anti-reflux barrier, but does not address an existing **mechanical stricture or ring**. - While the patient has GERD (a risk factor for Schatzki rings), the immediate problem is the obstructing ring itself, which requires dilation first. - Some patients may benefit from fundoplication after dilation if severe reflux persists, but this is not the next step.

Question 2: A 49-year-old man presents to his primary care physician complaining of multiple symptoms. He states that over the past 8 months he has noticed voice changes and difficulty swallowing. The dysphagia started with just dry foods like crackers but has progressed to include smoothies and ice cream. He works as a newspaper editor and has also noticed trouble writing with his dominant hand. He is accompanied by his wife, who complains that he snores and drools in his sleep. His medical history is significant for hypertension and a bicuspid aortic valve. He takes hydrochlorothiazide. On physical examination, there is atrophy of the right hand. The patient’s speech is slow. A systolic murmur at the right upper sternal border is appreciated. Tapping of the left patellar tendon causes the patient’s left lower extremity to forcefully kick out. Stroking of the plantar aspect of the patient’s left foot causes his left toes to extend upward. Which of the following therapies is most likely to slow the progression of the patient’s symptoms?

A. Amantadine
B. Beta interferon
C. Riluzole (Correct Answer)
D. Donepezil
E. Reserpine

Explanation: ***Riluzole*** - This patient presents with symptoms highly suggestive of **amyotrophic lateral sclerosis (ALS)**, including progressive **dysphagia**, **voice changes**, **hand weakness/atrophy**, **hyperreflexia** (forceful patellar reflex), and a **positive Babinski sign** (extension of toes). **Riluzole** is the only medication shown to slightly prolong survival and slow the progression of ALS by inhibiting glutamate release. - The patient's **snores and drools** are also consistent with bulbar involvement seen in ALS, as is the progressive dysphagia from dry foods to liquids. *Amantadine* - **Amantadine** is an antiviral drug primarily used to treat **influenza A** and to alleviate **dyskinesia** associated with **Parkinson's disease**. - It has no known efficacy in slowing the progression of **ALS**. *Beta interferon* - **Beta interferon** is a medication used to treat **multiple sclerosis (MS)** by modulating the immune system to reduce inflammation and neuron damage. - While MS can cause neurological symptoms, the clinical picture here with both upper and lower motor neuron signs without clear sensory deficits or relapsing-remitting course is not typical for MS, and beta interferon is not effective for **ALS**. *Donepezil* - **Donepezil** is a **cholinesterase inhibitor** primarily used to treat the symptoms of **Alzheimer's disease** by increasing acetylcholine levels in the brain, improving cognitive function. - It does not address the motor neuron degeneration characteristic of **ALS**. *Reserpine* - **Reserpine** is an **antihypertensive and antipsychotic** drug that depletes catecholamines and serotonin from nerve endings. - It is used to treat conditions like **hypertension and dyskinesias** (e.g., in Huntington's disease) but has no role in the management or slowing of **ALS** progression.

Question 3: A 55-year-old man presents to his primary care physician for trouble swallowing. The patient claims that he used to struggle when eating food if he did not chew it thoroughly, but now he occasionally struggles with liquids as well. He also complains of a retrosternal burning sensation whenever he eats. He also claims that he feels his throat burns when he lays down or goes to bed. Otherwise, the patient has no other complaints. The patient has a past medical history of obesity, diabetes, constipation, and anxiety. His current medications include insulin, metformin, and lisinopril. On review of systems, the patient endorses a 5 pound weight loss recently. The patient has a 22 pack-year smoking history and drinks alcohol with dinner. His temperature is 99.5°F (37.5°C), blood pressure is 177/98 mmHg, pulse is 90/min, respirations are 17/min, and oxygen saturation is 98% on room air. On physical exam, you note an overweight man in no current distress. Abdominal exam is within normal limits. Which of the following is the best next step in management?

A. Endoscopy (Correct Answer)
B. Omeprazole trial
C. Manometry
D. Barium swallow
E. CT scan

Explanation: ***Endoscopy*** - The patient presents with **dysphagia to solids and liquids**, significant for **recent weight loss**, and a **history of smoking**, all of which are **alarm symptoms** necessitating an upper endoscopy to rule out malignancy. - While he has **GERD symptoms** as well (retrosternal burning), the presence of alarm features mandates a direct investigation of the upper GI tract rather than empirical treatment. *Omeprazole trial* - An empirical trial of **PPIs** like omeprazole is appropriate for classic GERD symptoms without alarm features. - However, **dysphagia to solids and liquids with associated weight loss**, especially in a patient with a significant **smoking history**, are alarm symptoms that require direct visualization via endoscopy, not just symptom management. *Manometry* - **Esophageal manometry** is used to evaluate the motility of the esophagus and diagnose conditions like achalasia or esophageal spasm. - While the patient has dysphagia, **alarm symptoms (weight loss, smoking history)** raise concern for mechanical obstruction or malignancy, which should be investigated before motility disorders. *Barium swallow* - A **barium swallow** can identify structural abnormalities like strictures, masses, or webs, and also assess motility. - However, in the context of alarm symptoms, a **barium swallow is less sensitive** for detecting subtle mucosal changes or early malignancy compared to endoscopy, and any positive findings would still prompt an endoscopy. *CT scan* - A **CT scan of the chest and abdomen** is useful for assessing extraluminal pathology, mediastinal involvement, or distant metastases. - While it may eventually be part of staging if a malignancy is found, the **initial investigation for esophageal symptoms and alarm features** focuses on direct luminal visualization with endoscopy to identify the primary pathology.

Question 4: A 72-year-old man is admitted to the hospital because of a 2-day history of right-sided weakness and dysphagia. He is diagnosed with a thrombotic stroke and treatment with aspirin is initiated. A videofluoroscopic swallowing study is performed to determine his ability to swallow safely; he is found to be at increased risk of aspiration. Consequently, he is ordered not to have any food or liquids by mouth. A Dobhoff feeding tube is placed, tube feedings are ordered, and the patient starts receiving tube feedings. Shortly after, he develops a cough and dyspnea. An x-ray of the chest shows opacification of the right lower lobe and that the end of the Dobhoff tube is in his right lung instead of his stomach. Which of the following would most likely have prevented this medical error from occurring?

A. Two patient identifiers
B. Mortality and morbidity review
C. Fishbone diagram
D. Closed-loop communication
E. Checklist (Correct Answer)

Explanation: ***Checklist*** - A **checklist** for Dobhoff tube insertion would include steps like confirming tube placement with an X-ray *before* initiating feeds. This would have identified the misplaced tube. - Checklists standardize procedures, reduce human error, and ensure all critical safety steps are followed consistently, especially for high-risk interventions. *Two patient identifiers* - Using **two patient identifiers** is crucial for preventing errors related to incorrect patient identification, such as wrong-patient medication administration or surgery. - In this scenario, the tube was placed in the *correct patient*, but in the *wrong location*, so patient identification itself was not the source of the error. *Mortality and morbidity review* - A **mortality and morbidity (M&M) review** is a retrospective analysis of adverse events, usually performed after an error has occurred, to learn from mistakes and prevent future occurrences. - While valuable for system improvement, an M&M review would not have *prevented* this specific error from happening in real-time. *Fishbone diagram* - A **fishbone diagram** (also known as an Ishikawa diagram) is a cause-and-effect tool used to identify the root causes of a problem or adverse event *after* it has occurred. - Like M&M reviews, it is a post-event analysis tool and does not prevent errors at the point of care. *Closed-loop communication* - **Closed-loop communication** ensures that a message sent by a sender is understood and acknowledged by the receiver, often involving the receiver repeating the message back. - While important for team communication and preventing misunderstandings, it is less directly applicable to preventing a procedure-based error like incorrect tube placement, which requires physical verification.

Question 5: A 73-year-old man comes to the physician because of a 4-kg (9-lb) weight loss over the last month. During this time he has not been able to eat more than one bite without coughing immediately and sometimes he regurgitates food through his nose. His symptoms are worse with liquids. One month ago he had a stroke in the right middle cerebral artery. He has a history of hypertension, type 2 diabetes mellitus, and hyperlipidemia. Current medications include aspirin, amlodipine, metformin, and simvastatin. Examination of the oropharynx, chest, and abdomen shows no abnormalities. Neurological examination shows facial drooping on the left and decreased strength in the left upper and lower extremities. Which of the following is the most appropriate next step in management?

A. CT scan of the neck
B. Esophageal manometry
C. Transnasal laryngoscopy
D. Videofluoroscopy (Correct Answer)
E. Barium swallow

Explanation: ***Videofluoroscopy*** - This patient presents with symptoms highly suggestive of **dysphagia** (coughing with swallowing, nasal regurgitation, worse with liquids) following a **right middle cerebral artery stroke**, which can affect swallowing mechanisms. - **Videofluoroscopy**, also known as a **modified barium swallow study**, is the **gold standard** for evaluating oropharyngeal dysphagia, allowing direct visualization of oral and pharyngeal phases of swallowing and identifying aspiration. *CT scan of the neck* - A CT scan of the neck is primarily used to evaluate **structural abnormalities** in the neck, such as masses, lymphadenopathy, or thyroid pathology. - While it can identify some anatomical issues, it does not dynamically assess the complex process of **swallowing mechanics** or **aspiration risk** in real-time. *Esophageal manometry* - **Esophageal manometry** measures pressures within the esophagus and is used to diagnose disorders of esophageal motility, such as achalasia or diffuse esophageal spasm. - The patient's symptoms (coughing, nasal regurgitation, worse with liquids) point to **oropharyngeal dysphagia**, not primarily esophageal motility issues. *Transnasal laryngoscopy* - **Transnasal laryngoscopy** allows direct visualization of the larynx and pharynx to assess vocal cord movement, structural abnormalities, and pooled secretions. - While it can identify some anatomical or neurological deficits affecting swallowing, it does not directly visualize the **bolus transit** or **aspiration** during the act of swallowing, unlike videofluoroscopy. *Barium swallow* - A **barium swallow** (esophagram) is primarily used to evaluate the **esophagus** for structural abnormalities (e.g., strictures, diverticula) or motility disorders. - While it involves barium, it typically focuses on the esophageal phase and is less detailed for the **oropharyngeal phase** compared to videofluoroscopy, which is specifically tailored for this purpose.

Question 6: A 48-year-old woman presents with acute stroke symptoms 18 hours ago. MRI shows a right MCA M1 occlusion with large penumbra on perfusion imaging (mismatch ratio >1.8) and small infarct core (25 mL). Her NIHSS is 16. She has no significant comorbidities. Her family is concerned about disability but wants to pursue treatment if reasonable chance of benefit exists. Synthesize the evidence and evaluate the treatment approach.

A. Intravenous alteplase as salvageable tissue is present
B. Intra-arterial thrombolysis combined with mechanical device
C. No intervention as she is outside the standard treatment window
D. Mechanical thrombectomy based on perfusion imaging criteria (Correct Answer)
E. Medical management with antiplatelet and early rehabilitation

Explanation: ***Mechanical thrombectomy based on perfusion imaging criteria*** - For patients with large vessel occlusion (LVO) in the extended 6–24 hour window, **DAWN** and **DEFUSE-3** trials demonstrated significant functional benefit when clinical-core mismatch is present. - This patient satisfies criteria with an **M1 occlusion**, a **small infarct core (<70 mL)**, and a **large mismatch ratio (>1.8)**, indicating substantial salvageable penumbra. *Intravenous alteplase as salvageable tissue is present* - The therapeutic window for **IV alteplase** is strictly limited to within **4.5 hours** of symptom onset; it is not recommended at 18 hours due to high hemorrhage risk. - While salvageable tissue exists, chemical thrombolysis is less effective than mechanical intervention for **proximal M1 occlusions** and is unsafe in this late window. *Intra-arterial thrombolysis combined with mechanical device* - **Intra-arterial thrombolysis** is generally superseded by modern **stent retrievers** and aspiration catheters which provide faster and more complete recanalization. - Current guidelines prioritize standalone **mechanical thrombectomy** in the late window to minimize procedural risks and intracranial hemorrhage. *No intervention as she is outside the standard treatment window* - The "Time is Brain" concept has evolved into "Tissue is Brain," where **perfusion imaging** identifies candidates who benefit regardless of the traditional 6-hour clock. - Denying treatment based solely on the 18-hour timeframe ignores high-level evidence from the **DAWN** trial showing benefit up to 24 hours. *Medical management with antiplatelet and early rehabilitation* - Standard **medical management** (aspirin/heparin) for an M1 occlusion with a high **NIHSS score (16)** usually results in poor functional outcomes and severe disability. - While rehabilitation is essential, it does not address the underlying **large vessel occlusion** which can be reversed with mechanical intervention to prevent infarct expansion.

Question 7: A 55-year-old man undergoes successful thrombectomy for left MCA occlusion. Post-procedure, he develops progressive lethargy and his blood pressure increases to 180/100 mmHg. CT shows hyperdensity in the treated territory without hemorrhage, and his symptoms worsen over 4 hours despite blood pressure control. Evaluate the most likely diagnosis and management priority.

A. Hemorrhagic transformation; reverse anticoagulation immediately
B. Cerebral edema from large infarction; emergent decompressive hemicraniectomy
C. Reperfusion injury; start high-dose corticosteroids and osmotic therapy
D. Contrast extravasation from blood-brain barrier disruption; supportive care and avoid aggressive BP lowering (Correct Answer)
E. Recurrent arterial occlusion; emergent repeat angiography and thrombectomy

Explanation: ***Contrast extravasation from blood-brain barrier disruption; supportive care and avoid aggressive BP lowering*** - Post-thrombectomy **hyperdensity** on CT often represents contrast that leaked through an ischemic **blood-brain barrier**, which can mimic hemorrhage but lacks significant **mass effect**. - Management is **supportive care** because the contrast is typically reabsorbed within 24–48 hours; avoiding aggressive **blood pressure lowering** prevents secondary ischemia in the penumbra. *Hemorrhagic transformation; reverse anticoagulation immediately* - While **hemorrhagic transformation** is a risk, true blood usually demonstrates higher density earlier and is associated with rapid clinical decline and **midline shift**. - Reversing anticoagulation without confirming blood on a follow-up **dual-energy CT** or MRI may lead to **stent thrombosis** or re-occlusion. *Cerebral edema from large infarction; emergent decompressive hemicraniectomy* - **Cerebral edema** typically peaks between 72–96 hours post-stroke; a presentation within 4 hours is too acute for **malignant MCA syndrome**. - While edema causes lethargy, the hyperdensity on CT more specifically points toward **contrast staining** or blood rather than simple cytotoxic edema. *Reperfusion injury; start high-dose corticosteroids and osmotic therapy* - **Corticosteroids** are not indicated for stroke-related edema or reperfusion injury as they do not improve outcomes and may increase **infection risk**. - **Osmotic therapy** is reserved for patients with clear clinical or radiologic signs of **elevated intracranial pressure**, not isolated hyperdensity on CT. *Recurrent arterial occlusion; emergent repeat angiography and thrombectomy* - **Recurrent occlusion** usually presents with a sudden recurrence of the original **focal neurological deficits** (e.g., hemiplegia, aphasia) rather than progressive lethargy. - The presence of **hyperdensity** in the stroke territory on CT is specifically indicative of material (contrast or blood) being present, which is not a feature of a simple **re-occlusion**.

Question 8: An 80-year-old woman with atrial fibrillation presents 2 hours after acute ischemic stroke. NIHSS is 22. Imaging shows large left MCA territory infarction involving >1/3 of MCA territory with basilar artery occlusion. She lives alone but was independent before this event. Her family requests all possible interventions. Evaluate the management approach considering benefits versus risks.

A. Comfort measures only given poor prognosis and age
B. Thrombolysis alone as thrombectomy unlikely to benefit with established large infarction
C. Proceed with thrombolysis and thrombectomy given the therapeutic window
D. Thrombectomy only for basilar occlusion, avoid thrombolysis due to large infarction (Correct Answer)
E. Delay intervention and repeat imaging in 6 hours to assess progression

Explanation: ***Thrombectomy only for basilar occlusion, avoid thrombolysis due to large infarction*** - Intravenous **thrombolysis (IV alteplase)** is generally contraindicated or highly risky when imaging shows an established infarction involving **>1/3 of the MCA territory** due to the high risk of **hemorrhagic transformation**. - **Basilar artery occlusion** is a life-threatening emergency with a broader treatment window; mechanical **thrombectomy** can be lifesaving and is indicated even if thrombolysis is withheld. *Comfort measures only given poor prognosis and age* - Age is not a primary contraindication for intervention, especially since the patient was **independent** prior to the event (low **pre-stroke mRS**). - Family requests all possible interventions, and **basilar occlusion** has a catastrophic natural history that may be mitigated by mechanical intervention. *Thrombolysis alone as thrombectomy unlikely to benefit with established large infarction* - Thrombolysis is dangerous in this context due to the **large infarct volume** seen on imaging, which increases the likelihood of fatal **intracerebral hemorrhage**. - Thrombolysis is notably less effective for large vessel occlusions compared to **mechanical thrombectomy**, which is the gold standard for **basilar artery** recanalization. *Proceed with thrombolysis and thrombectomy given the therapeutic window* - While the patient is within the 4.5-hour window for thrombolysis, the presence of **established early ischemic changes** (>1/3 MCA territory) is a relative contraindication. - Attempting both increases the risk of **secondary hemorrhage** in the damaged MCA territory without providing significant additional benefit over thrombectomy alone for the **basilar occlusion**. *Delay intervention and repeat imaging in 6 hours to assess progression* - Delaying treatment in the setting of **basilar artery occlusion** is inappropriate, as "time is brain" and outcomes worsen significantly with every minute of **brainstem ischemia**. - Immediate decision-making is required based on the initial imaging, which already confirmed the **large-vessel occlusion** needing intervention.

Question 9: A 58-year-old woman with history of TIA 3 weeks ago presents with acute ischemic stroke. Imaging reveals new right MCA infarction and severe (70-99%) symptomatic right carotid stenosis. She received alteplase 6 hours ago with partial improvement. Her NIHSS improved from 14 to 8. Analyze the optimal timing for carotid revascularization.

A. Wait 4-6 weeks to reduce hemorrhagic transformation risk
B. Carotid stenting immediately after thrombolysis
C. Emergent carotid endarterectomy within 24 hours
D. Carotid endarterectomy within 2 weeks of symptom onset (Correct Answer)
E. Medical management only due to recent thrombolysis

Explanation: ***Carotid endarterectomy within 2 weeks of symptom onset*** - For patients with **symptomatic carotid stenosis** (70-99%), early revascularization within **2 weeks** (ideally within 48 hours to 7 days) provides the maximum benefit in preventing recurrent stroke. - Current guidelines suggest that once the patient is **neurologically stable** and the infarct size is not massive, the risk of recurrence outweighs the risk of **hemorrhagic transformation**. *Wait 4-6 weeks to reduce hemorrhagic transformation risk* - This represents older clinical practice; modern evidence shows the risk of **recurrent stroke** is highest in the first 2 weeks, making this delay dangerous. - Waiting this long is only typically reserved for patients with a **large territory infarct** (high NIHSS) or those at very high risk for bleeding complications. *Carotid stenting immediately after thrombolysis* - Immediate stenting right after **alteplase** administration increases the risk of **intracranial hemorrhage** and local bleeding at the access site due to systemic fibrinolysis. - While **Carotid Artery Stenting (CAS)** is an alternative, it is generally not preferred over **Carotid Endarterectomy (CEA)** in older patients unless specific surgical contraindications exist. *Emergent carotid endarterectomy within 24 hours* - Performing surgery within the first 24 hours after **thrombolytic therapy** carries a significant risk of **hemorrhagic transformation** of the fresh infarct. - Most surgeons prefer to wait at least **24-48 hours** post-alteplase to ensure the fibrinolytic effects have resolved and the patient's neurological status is stable. *Medical management only due to recent thrombolysis* - Medical management alone is insufficient for **symptomatic stenosis >70%**, as the risk of a disabling stroke remains high without mechanical intervention. - **Dual antiplatelet therapy** and statins are vital, but they serve as an adjunct to, rather than a replacement for, **surgical revascularization** in fit patients.

Question 10: A 62-year-old man received IV alteplase 45 minutes ago for acute ischemic stroke. He now develops sudden severe headache, vomiting, and decreased level of consciousness. His blood pressure is 190/110 mmHg. Analyze the most critical immediate steps in management.

A. Stop alteplase, observe, and repeat CT in 24 hours
B. Administer labetalol for blood pressure and continue monitoring
C. Obtain emergent CT head, stop alteplase, give cryoprecipitate and tranexamic acid (Correct Answer)
D. Continue alteplase and give mannitol for cerebral edema
E. Give protamine sulfate and arrange for neurosurgical consultation

Explanation: ***Obtain emergent CT head, stop alteplase, give cryoprecipitate and tranexamic acid*** - Sudden headache and neurologic decline during **alteplase** infusion are hallmarks of **symptomatic intracranial hemorrhage (sICH)**, necessitating immediate cessation of the drug and diagnostic imaging. - Reversal of fibrinolysis is critical; **cryoprecipitate** provides **fibrinogen** and Factor VIII, while **tranexamic acid** or aminocaproic acid inhibits further fibrinolysis. *Stop alteplase, observe, and repeat CT in 24 hours* - Delaying a CT scan for 24 hours is inappropriate for an acute neurological change, as active bleeding requires **emergent intervention**. - Observation alone is insufficient; **active reversal** of coagulopathy is needed to prevent hematoma expansion and brain herniation. *Administer labetalol for blood pressure and continue monitoring* - While **blood pressure management** is important (targeting <180/105 mmHg), it is secondary to stopping the thrombolytic and confirming hemorrhage. - Monitoring without stopping the infusion would allow the **thrombolytic agent** to continue exacerbating the intracranial bleed. *Continue alteplase and give mannitol for cerebral edema* - Continuing **alteplase** in the setting of suspected hemorrhage is contraindicated and life-threatening. - **Mannitol** addresses intracranial pressure but does not treat the underlying **coagulopathy** causing the hemorrhage. *Give protamine sulfate and arrange for neurosurgical consultation* - **Protamine sulfate** is the reversal agent for **heparin**, not alteplase, and has no effect on fibrinolysis. - While neurosurgical consultation is necessary, the medical reversal of the **thrombolytic effect** with blood products is the most immediate priority.

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