HMSD 5101 Formative OSE - Anatomy and ECG
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Questions and Answers

What is the common scale used to determine consciousness called?

  • Aldrete Score
  • Riker Sedation-Agitation Scale
  • Glasgow Coma Scale (correct)
  • BIS Monitor

A score of 3/15 on the Glasgow Coma Scale indicates a fully conscious state.

False (B)

What is eGFR and what is the average value for a male?

Glomerular Filtration Rate; approximately 120 mL/min

The small red arrow in the x-ray indicates _____ pathology.

<p>vascular</p> Signup and view all the answers

Match the imaging techniques with their applications:

<p>CT = Detailed internal structures in cross-sectional images X-ray = Quick assessment of bones and gross pathology MRI = Soft tissue contrast and brain imaging Ultrasound = Real-time images, usually for soft tissues and fluid</p> Signup and view all the answers

Which wave on an ECG represents atrial depolarization?

<p>P wave (B)</p> Signup and view all the answers

The Circle of Willis is essential for the blood supply to the brain.

<p>True (A)</p> Signup and view all the answers

What is the primary function of the bronchial tree?

<p>To conduct air to the lungs and facilitate gas exchange.</p> Signup and view all the answers

The ______ is responsible for filtering excess fluid and waste from the blood to produce urine.

<p>kidney</p> Signup and view all the answers

Match the cardiovascular elements with their functions:

<p>P wave = Atrial depolarization QRS complex = Ventricular depolarization T wave = Ventricular repolarization Blood brain barrier = Protects the brain from toxins</p> Signup and view all the answers

Which symptoms are commonly associated with brain pathology?

<p>All of the above (D)</p> Signup and view all the answers

Where is the pathology located in relation to the meninges?

<p>The pathology is located in the subarachnoid space.</p> Signup and view all the answers

CT imaging has no limitations in evaluating the brain's blood supply.

<p>False (B)</p> Signup and view all the answers

Flashcards

What is the Glasgow Coma Scale (GCS) and what does a score of 3/15 indicate?

The Glasgow Coma Scale (GCS) is a standardized tool used to assess the level of consciousness in patients. A score of 3/15 indicates a severe impairment of consciousness, suggesting a very low level of awareness and responsiveness.

What pathology is demonstrated on the image?

The image shows a pneumothorax, which is a collapsed lung due to air accumulation in the pleural space.

What is GFR and what is an average value for a male?

GFR stands for glomerular filtration rate, which measures the rate at which the kidneys filter waste products from the blood. The average GFR for a male is around 125 mL/min, but it can vary depending on factors such as age, sex, and ethnicity.

Explain how eGFR is used to ensure safe administration of IV contrast media.

eGFR is an estimated glomerular filtration rate, calculated based on factors like age, sex, race, and serum creatinine levels. It's used to assess kidney function, particularly before administering contrast media intravenously. Patients with an eGFR below 60 mL/min are at risk of kidney damage from contrast exposure.

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What pathology is indicated by the small red arrow?

The red arrow points to a pulmonary embolism (PE), which is a blockage of an artery in the lungs by a blood clot.

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What is the P wave on an ECG?

The P wave represents atrial depolarization. It is the electrical activity produced by the atria as they contract.

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What is the QRS complex on an ECG?

The QRS complex represents ventricular depolarization. It is the electrical activity produced by the ventricles as they contract (and the atria repolarize).

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What is the T wave on an ECG?

The T wave represents ventricular repolarization. It is the electrical activity produced by the ventricles as they recover from contraction.

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Describe The Bronchial Tree?

The bronchial tree is a branching network of airways that deliver oxygen to the lungs. It begins with the trachea, which splits into two main bronchi, divides into smaller and smaller bronchioles, ending in alveoli. The bronchi are lined with ciliated epithelium and smooth muscle to help keep the airways open.

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What is the Circle of Willis?

The Circle of Willis is an anastomosis of arteries at the base of the brain. It ensures a consistent blood supply to the brain, even if one artery is blocked.

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What is the blood brain barrier?

The blood brain barrier is a protective layer formed by specialized capillaries in the brain. It restricts the passage of substances from the blood into the brain, protecting it from harmful toxins.

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How do the kidneys produce urine?

Located in the renal pelvis, the kidneys perform the function of producing urine by: 1. Filtration: Blood is filtered at the glomerulus, removing waste products and water. 2. Reabsorption: Useful substances are reabsorbed back into the bloodstream. 3. Secretion: Additional waste products are secreted into the tubule. This filtered fluid becomes urine.

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What is meningitis?

Meningitis is an inflammation of the meninges, the membranes surrounding the brain and spinal cord.

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Study Notes

HMSD 5101 Formative OSE - November 2024

  • Instructions: The exam consists of 8 questions, each worth 10 marks. Record answers in the spaces provided. Cross out anything you do not want marked. Diagrams are required if requested. Additional paper is available upon request. Ensure your name is on the booklet and all marked work is legible.

Question 1: Bronchial Anatomy

  • i. Identify structures 1-5 on the provided image. (5 marks)
  • ii. Describe the anatomy of the bronchial tree. (5 marks)

Question 2: Blood supply of the brain

  • i. Label the vessels on the CT Circle of Willis angiogram. (5 marks)
  • ii. What are the advantages and limitations of imaging the brain's blood supply with CT? (5 marks)

Question 3: ECG

  • a) P wave: Describe what is represented on the ECG. (1 mark)
  • b) QRS complex: Describe what is represented on the ECG. (1 mark)
  • c) T wave: Describe what is represented on the ECG. (1 mark)
  • 2. Link the ECG trace with the cardiac cycle to explain how blood moves through the heart. (7 marks)

Question 4: Renal Anatomy

  • Label the structures 1-6 on the diagram. (1 mark)
  • Briefly explain how this structure produces urine. (4 marks)

Question 5: Brain Pathology

  • i. What pathology is evident in the image? (1 mark)
  • ii. With regards to the meninges, where is this pathology located? (1 mark)
  • iii. What symptoms might this person present with? (2 marks)
  • iv. What is the blood brain barrier and what is its role? (3 marks)
  • v. There is a common scale to determine consciousness. What is it called and what does a score of 3/15 indicate? (2 marks)

Question 6: Respiratory Imaging

  • i. What pathology is demonstrated on the image? (1 mark)
  • ii. Discuss the application and any limitations of this imaging technique compared to CTPA. (4 marks)
  • iii. Explain how this pathology impacts oxygen saturation, considering respiratory and cardiovascular physiology. (5 marks)

Question 7: Great Vessels

  • Label structures A-D on the diagram. (4 marks)
  • What pathology is indicated by the small red arrow? (1 mark)

Question 8: Renal Pathology

  • i. What common pathology is demonstrated in the unenhanced CT scan of the abdomen? (1 mark)
  • ii. Name another suitable modality for imaging this pathology. (1 mark)
  • iii. What is GFR and what is an average value for a male? (3 marks)
  • iv. Explain how eGFR is used to ensure safe administration of IV contrast media, using values in your answer. (5 marks)

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Description

This quiz covers essential topics in anatomy, specifically bronchial anatomy, the blood supply of the brain, and ECG interpretation. Each question assesses knowledge necessary for understanding human organ systems and their functions. Prepare to demonstrate both identification skills and analytical reasoning in your responses.

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