Dr Aditya Ganguly Profile picture
Jun 19 16 tweets 5 min read
1) Have you ever seen a case of rabies?

I saw two cases 5 years back and they have stayed with me since.

I do not fear any disease per se but I am not ashamed to say that I dread rabies --> it is a terrible affliction.
2) The first patient was a small child of around 7 years old --> he had been bitten by a street dog around 1 month back. But his family had opted for natural healers.

When he was brought in, he was crying uncontrollably with a terror stricken expression on his face.
3) Hydrophobia, as commonly believed, is not so common in these cases. Why you ask?

Its because these patients are so extremely agitated and combative, its very difficult to get close to them, let alone make them drink water.
4) The delirium worsens over a period of hours to days as the patient gradually lapses into a coma, if the autonomic storm doesn't kill him or her first.

Rarely, the patients may develop a form of ascending paralysis mimicking GBS --> paralytic rabies.
5) The word 'rabies' is derived from the Latin word 'rabere' which is believed to originate in the Sanskrit word 'rabhas' which means to do violence.

It belongs to the genus of lyssavirus --> what is 'lyssa'?
6) Lyssa is a Greek term referring to a state beyond anger or rage --> a state of 'insensate madness' or a 'wolfish rage' --> a rage that the Greek hero Achilles experienced when the Trojan prince Hector killed his cousin, Patroclus in combat.
7) Rabies still remains an important disease in the 3rd world with roughly 50,000 to 60,000 cases occurring each year --> Guidelines issued by the DGHS for post exposure prophylaxis have helped bring down the mortality rate.
8) Cure rates still remain abysmal with only 29 well documented cases of survival with or without severe neurological sequelae as of December 2020 (ref UpToDate)

Experimental therapies like ribavirin, amantadine, favipiravir and the Milwaukee protocol have not yielded success.
10) The finest account of the history of this fiendish disease.
I did a bit of deep diving into rabies --> I never had a clear idea of the pathogenesis before. Here is what I found!
Plus a clinical description by one of the greats of neurology -- Sir William Gowers.
The Bible came to my rescue, so to speak.
A literary work dedicated to rabies!

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More from @AdiG1993

Jun 18
1) As an intern, GP or a gen med resident, you are constantly exposed to MR imaging of the brain. This is a complicated imaging modality that requires a radiologist for optimum analysis and reporting. But you must know the basic sequences and how to identify them.
2) The five most common sequence that we use in internal medicine are the T1 (with or without contrast), T2, FLAIR, DWI and ADC sequences. SWI/GRE sequences are also used in certain cases.
3) First check whether the soft tissue of the scalp and the skull (black) are visible or not --> if yes, you are dealing with T1,T2 or FLAIR.
Read 10 tweets
Jun 17
1) Bell's palsy (BP) is typically defined as an IDIOPATHIC unilateral LMN type CN7 palsy.

It is named after the Scottish neurophysiologist, Charles Bell. (vide infra)
2) But an LMN type CN 7 palsy is NOT the same as Bell's palsy.

It is merely the idiopathic form, often thought to be due to herpes or varicella induced direct nerve damage or as post infectious demyelination.
3) There are certain RED FLAGS in the diagnosis of an LMN type CN 7 palsy.

1. Vesicles on the tympanic membrane or ear canal (Ramsay Hunt syndrome type 2)

2. Bilateral involvement - Lyme disease, sarcoid, GBS, Melkersson-Rosenthal syndrome, Mobius syndrome etc!
Read 12 tweets
Jun 17
1) The Agnipath recruitment scheme has spawned chaos aross states --> but it is symptomatic of a larger problem.

The system of pension is economically unviable in the long term --> lifespans have increased disproportionate to retirement ages across economies.
2) Visual capitalist has created an illustrative infographic to explain this particular problem --> they call this the financial equivalent of climate change!
visualcapitalist.com/pension-time-b…
3) There are only three outcomes possible

1. Pension systems will cease to exist.
2. People will have to continue working into their 90s.
3. The reproductive rates will have to go down as most people go childless --> but this will slow down in the economy decades hence.
Read 5 tweets
Jun 10
1) I was recently contacted by a young man who was unsure of pursuing NEET since he had a tumor during his preparatory phase which had badly derailed his studies.

He was worried that he had lost 'a lot of time' and that his peers were far ahead of him!
2) I told him something I had learnt from one of my mentors long back --> No plan in life, as in war, survives first contact with the enemy!
3) This is his life and his glory or his failure will be his alone --> he has faced what others (including myself) could not have dreamt of --> in my opinion, he is a warrior!
Read 4 tweets
Jun 8
1) Cephalosporins are a commonly used class of antibiotics --> what's not so commonly known is that some members of this drug class can cause major bleeding complications!

4 groups of cephalosporins have been implicated in this problem!
2) This is based on the different side chains attached to position 3 of the cephem nucleus!
The first and largest group is the NMTT (N-methylthiotetrazole) side chain containing group --> cefamandole, cefotetan, cefmatazole, moxalactam and cefoperazone!
3) Other groups include MTDT and HTT side chain containing cephalosporins as well as cefoxitin which doesn't have any side chains attached to the 3 position of the cephem nucleus!
Read 10 tweets
Jun 6
The youngest STEMI (heart attack) patient I ever saw was aged 23.
He was obese, hypertensive,never excercised and drank soft drinks everyday! He had lost his father and uncle to STEMI as well! We suspected FH but there was no evidence!

Young age no longer rules out ACS!
FH --> Familial hypercholesterolemia, the most common AD genetic disease --> problems with the LDL receptor --> your liver cannot clear LDL --> LDL laden cholesterol gets oxidized (more in Indians, African Americans and Hispanics) --> atherosclerosis!
Statins usually work by reducing HMG CoA reductase which helps in cholesterol synthesis in the liver --> so the liver draws in more chol. from the LDL in blood using LDL receptors. They may/may not work in FH, depending on how badly the receptors are affected.
Read 6 tweets

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