Hey Awesomites
Vitamin D has been shown beneficial for a variety of disorders and diseases. Recent studies now suggest that those deficient in vitamin D are at a higher risk of developing cancer compared to those with adequate levels.
Friday, March 17, 2017
Brainstem Syndromes!
So let's get done with all the important brainstem syndromes once and for all !
I would be writing on all of them one by one...
Also ...I will try and incorporate many of my diagrams to help you guys make it seem less daunting...
Starting from the Midbrain the first syndrome is..
(The image shows the level of the lesion)
1):Parinaud's Syndrome
Lesion location:Midbrain dorsum ,superior collicculi.
Structures involved: Quadrigeminal plate region; pretectum; periaqueductal gray matter
Etiology: •Due to mass lesion in the region of the posterior third ventricle, most often pinealoma, or due to midbrain infarction.
Clinical features:
•Impaired upgaze as centre for upward gaze is affected
convergence retraction nystagmus;
Argyll Robertson pupil :dilated pupils with light near dissociation.
•Impaired upgaze as centre for upward gaze is affected
convergence retraction nystagmus;
Argyll Robertson pupil :dilated pupils with light near dissociation.
A closer look at the structures involved .
I hope it helped !Also do share your Neuroanatomy diagrams and and more information on Parinaud Syndrome.
Have a nice day!
-Medha!
Thursday, March 16, 2017
How I remember the duration of symptoms for Generalized anxiety disorder (GAD) required for diagnosis
The symptoms of generalized anxiety disorder should be present for at least 6 months. For me, it's hard to remember the duration of the symptoms in psychiatry. So I mnemonic-ify them :D
I remember G6PD, and say G6AD instead!
For those who don't know what GAD is here is the DSM V criteria for diagnosis of Generalized Anxiety Disorder...
I remember G6PD, and say G6AD instead!
For those who don't know what GAD is here is the DSM V criteria for diagnosis of Generalized Anxiety Disorder...
Transposition of Great Arteries!
Hello!
So I have divided the post into two parts - A short summary for those who don't have the time to read everything (#TLDR) and a nice long explanation for those who want to read everything :)
Let's start with TLDR.
Buzz words for congenital syphilis!
Following are some important signs and buzzwords that are testable ...And high yeild for entrances.
Olympian Brow: Bony prominence of the forehead caused by persistent or recurrent periostitis
Clavicular or Higoumenakia sign:Unilateral or bilateral thickening of the sternoclavicular third of the clavicle
Saber shins :Anterior bowing of the midportion of the tibia
Scaphoid scapula :Convexity along the medial border of the scapula
Hutchinson teeth:Peg-shaped upper central incisors; they erupt during 6th yr of life with abnormal enamel, resulting in a notch along the biting surface
Mulberry molars :Abnormal 1st lower (6 yr) molars characterized by small biting surface and excessive number of cusps
Saddle nose :Depression of the nasal root, a result of syphilitic rhinitis destroying adjacent bone and cartilage
Rhagades:Linear scars that extend in a spoke-like pattern from previous mucocutaneous fissures of the mouth, anus, and genitalia
Juvenile paresis :Latent meningovascular infection; it is rare and typically occurs during adolescence with behavioral changes, focal seizures, or loss of intellectual function
Juvenile tabes : Rare spinal cord involvement and cardiovascular involvement with aortitis
Hutchinson triad :Hutchinson teeth, interstitial keratitis, and 8th nerve deafness
Clutton joint :Unilateral or bilateral painless joint swelling (usually involving knees) from synovitis with sterile synovial fluid; spontaneous remission usually occurs after several weeks
Interstitial keratitis: Manifests with intense photophobia and lacrimation, followed within weeks or months by corneal opacification and complete blindness
8th nerve deafness: May be unilateral or bilateral, appears at any age, manifests initially as vertigo and high-tone hearing loss, and progresses to permanent deafness.
Well all these are late manifestations of congenital syphilis occuring after 2 years of life.
It is important to recognise these signs clinically and also on the exams...
-Medha.
Pathophysiology of myopathy caused during hypothyroidism and hyperthyroidism
Hello awesomites! Today's topic of discussion is - Myopathy in thyroid disease.
Interestingly, it is caused by both, hypothyroidism as well as hyperthyroidism.
What is myopathy?
It is a disease of muscle tissue where, ultimately, muscles get weak and are unable to perform work due to deficiency of ATP.
Why is there myopathy in hyperthyroidism?
The thyroid hormone is a catabolic hormone. Hyperthyroidism increases energy expenditure, glucose turnover, lipolysis, and protein breakdown (proteolysis). But here is the catch - Hyperthyroidism increases whole-body protein turnover and breakdown before any measurable changes in energy expenditure or glucose and fat metabolism, suggesting that amino acid and protein metabolism is an early and primary target for thyroid hormone action in humans. It was therefore concluded that the thyroid-hormone concentration may be an important factor in regulating muscle proteolysis. The altered protein metabolism causes myopathy.
Then, one may ask, why myopathy in hypothyroidism? Less thyroid hormone should lead to less protein breakdown, shouldn't it?
Well, this is a good question! Slightly complex and tricky to answer though.
In hypothyroidism, there is abnormal glycogenolysis, defective mitochondrial oxidative metabolism and triglyceride storage.
Abnormal glycogenolysis and triglyceride storage: Less glucose is released and utilised because of this. The body starts using more proteins usually derived from muscles leading to myopathy.
Mitochondrial oxidative metabolism defect: Thyroid hormone is responsible for activation of bc1 complex also known as complex 3 & succinate dehydrogenase. Less activation of bc1 leads to less formation of ATP from glucose.... So again, the body switches to proteins from muscles as a source of energy!
That's all!
Stay cool :)
Stay cool :)
~Ojas
Wednesday, March 15, 2017
Fact of the day: Regulate brain activity with your type of music
Hey Awesomites
Which genre or type of music do you like the most? Well, it surely has to do a lot with the functioning of our brain. Some of you may like slow music while others like to rock n roll on the floor while listening to their favourite beats. I am more of the latter type too, depending on the mood. ;p
Which genre or type of music do you like the most? Well, it surely has to do a lot with the functioning of our brain. Some of you may like slow music while others like to rock n roll on the floor while listening to their favourite beats. I am more of the latter type too, depending on the mood. ;p
Tuesday, March 14, 2017
Pediatric drawing milestones mnemonic
I share two mnemonics in this video - The count numbers on your hand mnemonic and the draw it yourself mnemonic xD
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