Questions and Answers
What is the name of the structure that sends fibers to the cerebral cortex in the optic radiation?
Which of the following is NOT a possible finding in a hypertensive patient experiencing a sudden decrease in vision?
Which of the following is NOT a characteristic finding in hypertensive retinopathy?
What is a major predisposing factor for the development of branch retinal vein occlusion caused by chronic, poorly controlled hypertension?
Signup and view all the answers
A hypertensive patient develops a dry cough after starting a medication that reduces preload and afterload. Which of the following medications is most likely to have the same benefits without causing cough?
Signup and view all the answers
Which of the following drug classes can potentially reverse cardiac hypertrophy in patients with hypertension?
Signup and view all the answers
Which of the following medications is specifically approved for the treatment of subarachnoid hemorrhage?
Signup and view all the answers
A patient with persistent hypertension despite regular medications is prescribed an additional drug that dilates blood vessels by blocking calcium channels. This medication most likely belongs to which class?
Signup and view all the answers
What is the name of the condition where a retinal vein is narrowed at the point where it crosses an artery, often associated with hypertension?
Signup and view all the answers
Which of the following is NOT a potential side effect of medications that reduce preload and afterload, such as ACE inhibitors, in hypertensive patients?
Signup and view all the answers
Study Notes
Cerebral Infarcts and Necrosis
- Cerebral infarcts undergo liquefactive necrosis, characterized by the transformation of tissue into a liquid viscous mass.
- Common features of cerebral tissue changes include being wedge-shaped, appearing raised due to edema, exhibiting areas of softening, and being depressed with gliosis.
- May present fibrinous exudate on the surface.
Cranial Nerve Examination
- Enables evaluation of the brain stem function.
- Optic nerve assessment includes visual acuity, visual fields, and funduscopic examination.
- Olfactory nerve is tested with non-volatile stimuli while occluding one nostril.
- Oculomotor, trochlear, and abducens nerves are assessed together due to similar functions.
- Trigeminal nerve assessment is incorrect in that it has both sensory and motor functions, contrary to it being only motor.
Motor Examination
- Involves several aspects: assessment of muscle bulk, tone, spontaneous movements, and strength testing.
- Spasticity indicates upper motor neuron lesions, while flaccidity indicates lower motor neuron lesions.
- Rigidity presents variable resistance dependent on position and movement speed.
Drug Mechanisms
- Certain drugs may act by indirectly inhibiting thrombin via antithrombin activation or directly inhibiting thrombin.
- Some drugs may indirectly inhibit factor Xa while others antagonize vitamin K's effects.
Cognitive and Emotions Module
- Destruction of the amygdala leads to loss of fear and rage, resulting in placidity.
- Emotional aspects of long-term memories are primarily stored in the neocortex and amygdaloid nuclei.
- Regions causing sensations of punishment include the basal ganglia, hippocampus, and hypothalamus.
Disorder Classification
- Disorders of mood include mood swings, irritability, and depersonalization.
- Disorders of affect share similar features with mood disorders.
Diabetic Retinopathy
- The internal carotid artery has three bends.
- Ophthalmic artery is a significant branch of the internal carotid artery.
- Diabetic retinopathy features include flame hemorrhages and macular edema, while arteriovenous nicking is not included.
- Microaneurysms signify dilatation of retinal arterioles and can be treated with laser photocoagulation.
- Repaglinide acts as an insulin secretagogue, whereas metformin can cause lactic acidosis.
Neurology and Retinopathy
- The central artery of the retina branches from the ophthalmic artery and requires review of its path and branches.
- Müller cells are not nerve cells; they possess unique structural features within the retina.
- The outer plexiform layer is formed by synapses between photoreceptors and bipolar cells.
- Visual impulses predominantly relay through the lateral geniculate body to the cerebral cortex.
- Hypertensive retinopathy impacts the retinal vasculature, leading to conditions such as branch retinal vein occlusion.
Hypertension Management
- Calcium channel blockers may effectively reduce blood pressure and aid in cases of persistent hypertension.
- ACE inhibitors can reverse cardiac hypertrophy, while specific drugs like Nimodipine are approved for treating subarachnoid hemorrhage.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
A set of questions related to neurology, covering topics such as cerebral infarcts, cranial nerve examination, and more.
