Monday, November 7, 2016
Cataplesy and cataplexy mnemonic
A case with dyspnea and blurring of vision
Labs showed:
Hemoglobin concentration of 4.0 g/dL
Total white cell count of 25000/cmm
Platelet count of 60000/cmm
Monoclonal gammopathy (M spike) was seen in gamma globulin region, which turned out to be IgM on immunofixation.
Fundus examination revealed venous dilatation, tortuosity and superficial retinal hemorrhages.
Diagnosis? Treatment?
Saturday, November 5, 2016
Tetanus are Anaerobic! Can Oxygen infusion into the wound, heal tetanus?
Thursday, November 3, 2016
Non-Hodgkins lymphoma treatment (CHOP regimen) mnemonic
If you can't remember the drugs used in the CHOP regimen of Non-hodgkin's lymhoma, I have a mnemonic for you.
Hodgkins lymphoma treatment (ABVD regimen) mnemonic
If you can't remember the drugs used in the ABVD regimen of Hodgkin's lymhoma, I have a mnemonic for you.
Study group discussion: ADP fibrinogen test
What is ADP (Adenosine diphosphate) fibrinogen test?
ADP, formed by Ib receptor, acts on IIb IIIa receptor through fibrinogen and causes aggregation.
In vWD and Bernard Soulier disease (Ib defect), if you add ADP, aggregation would take place and test will be normal as it acts on IIb IIIa receptor.
In glanzmann thrombasthenia, the IIb IIIa receptor is deficient. ADP can not act on the receptor, if added. That's why, the test becomes abnormal.
Therefore, the test is normal in vWD, Bernard soulier disease and abnormal in glanzmann thrombasthenia.
Explained by Abhishek Shukla
Wednesday, November 2, 2016
PATCHED: When the tonsils shows a membrane
I'm back with a simple mnemonic to deal with a questionably common but very important issue: The Patch On The Tonsil.
Difference between neuroleptic malignant syndrome and serotonin syndrome
Evolves over one to three days.
Sluggish neuromuscular responses (Rigidity, bradyreflexia)
Typical course: Mental status changes appear first, followed by rigidity, then hyperthermia, and autonomic dysfunction (Tachycardia, high BP, tachypnea)
Monday, October 31, 2016
Fever : What questions to ask your patient and why
So we're familiar with the definition and measurement of fever. But while taking a case or interacting with a patient with this simple and most basic symptom , what all should we ask for to make sure we don't miss out on anything ?
1. Onset and Duration.
When did the fever begin - and for how long has it lasted. (This would give a clue whether the person suffers from an Acute Febrile Illness - which can generally be attributed to Infectious Disease , or a rather Chronic form of fever which could be due to Granulomatous diseases or even Neoplastic and Autoimmune conditions )
(Has it worsened or Become better since its onset. This gives a clue about the present status of the patient. )
(It's essential to include the presence or absence of chills+Rigors + Sweat immediately in the fever description. Presence of Chills and Rigors indicate any infectious process in the body and can be found in Malaria and UTI's among other conditions. Sweating after feeling hot and then cold is characteristically associated with Malaria)
(Important : Presence of the B Symptoms - which are Night Sweats ; Fever ; Weight loss. Seen with Lymphomas and TB)
(It's of extreme value to understand the pattern of the fever.
If the fever is present throughout the day with a variation of not more than 1°C it is of the Continuous Type : As seen in Enteric Fever and even UTI's .
If the fever is present throughout the day but the variation is more than 1°C it is of the 'Remittent' variety. It may not be possible to distinguish between these 2 on history alone.
Intermittent is when the fever stays only for some duration during the day and the patient is afebrile during the remaining part )
(Night rise of fever could be suggestive of Tuberculosis)
(Viral exanthems like Dengue , Chikungunya , Zika or even Rickettsial diseases commonly present with some form of rashes)
(Another possibility could be a primary Skin condition induced fever )
(Arboviruses like Dengue and Chikungunya are infamous for these. Arthralgia is especially debilitating in Chikungunya fever. Body ache is also common in both. Retro-orbital pain and Bifrontal headache are common with Dengue.)
(Presence of these - especially during the post monsoon season should raise suspicion of Leptospirosis or Acute Viral hepatitis. Enteric fever may be considered)
(Presence of these should raise query of TB or Pneumonia )
( UTI is a common cause of AFI especially in Diabetics )
( Characteristic of Meningitis /Encephalitis)
A.P.Burkholderia
Sunday, October 30, 2016
Study group discussion: Why are agglutinates not seen in warm type autoimmune hemolytic anemia?
Why are agglutinates not seen in warm type autoimmune hemolytic anemia?
Because the antibody is IgG. IgG is called incomplete antibody.
RBCs have a strong negative charge on their surface called zeta potential. So the shortest distance attainable between two RBCs is 18nm. IgM molecule has a large pemtameric structure, so it has a distance of 30 nm between two binding sites. Hence, it is able to agglutinate RBCs.
But the small IgG molecule has only 12 nm gap between two binding sites. So it can't bind to multiple RBCs and hence fails to agglutinate them.
So it just coats the RBCs, which is taken to spleen to be killed.
That's all!
Thank you, Divya, for explaining this to us =)
-IkaN
Saturday, October 29, 2016
Marijuana and cannabinoids intoxication mnemonic
Autonomic hyperactivity (Mild hypertension, dry mouth)
Racing heart (Tachycardia)
Injection (Scleral, conjunctival injection)
Judgement impaired
Uphoria (Euphoria)
Anxiety
Nystagmus
Ataxia
Step 2 CK: Treatment of narcolepsy and cataplexy
Patients with sleepiness severe enough to require medication can be treated with stimulant medications.
Narcolepsy mnemonic
Crown rump length and gestational sac diameter
The crown rump length in mm is calculated by subtracting 42 from the gestational age in number of days.
The gestational sac diameter in mm is calculated by subtracting 30 from the gestational age in number of days.
Friday, October 28, 2016
Step 2 CK: Treatment of bipolar disorder
Give antipsychotic (preferably IM) like Olanzapine, Haloperidol first because they act fast.
For patients who have a history of multiple recurrences or have a partial but inadequate response to a maintenance drug that is tolerated, add a second drug:
Step 2 CK: Treatment of anxiety disorders
Patient is in a panic attack:
Use benzodiazepines because they act fast.
Long term treatment for panic disorder:
SSRIs
Long term treatment for GAD:
SSRIs
Buspirone
Wednesday, October 26, 2016
Tuesday, October 25, 2016
Study group discussion: Bradycardia
Saturday, October 22, 2016
Authors diary: IkaN's real name (Meaning and pronunciation of Nakeya)
IkaN from Medicowesome here!
This video and post is from the authors diary! :D
People have been asking me what my real name is and how I pronounce it so I thought of making a video on it.
There you go! :)
Wolff–Chaikoff effect mnemonic
Friday, October 21, 2016
Treatment of post traumatic stress disorder (PTSD) mnemonic
Thursday, October 20, 2016
Diagnosis vs. Prognosis! Which is which?
Wednesday, October 19, 2016
Step 2 CK: ADHD treatment
Tuesday, October 18, 2016
Monday, October 17, 2016
Study group discussion: Dopamine, prolactin, Parkinson's disease and Schizophrenia
A schizophrenic presents with galactorrhea. The patient’s medication regimen includes haloperidol. Blockade of which neurotransmitters is responsible for this patient's clinical presentation?
Dopamine. Since it is a Prolactin Inhibitor - Inhibition of Dopamine causes hyperprolatctinemia.
Doubt: Level of dopamine also decreases in Parkinson's disease. So can hyperprolactinemia also be seen in Parkinson's disease?
In Parkinson's, there is loss of dopamine only in the substantia niagra.
There are 4 main dopaminergic pathways in the CNS:
1. Nigrostrial pathway which is involved in Parkinson's disease.
2. Mesolimbic pathway involved in Schizophrenia.
3. Paraventricular pathway involved in satiety.
4. Tuberoinfundibular pathway involved in prolactin secretion.
Drugs can affect all pathways, that's why, the side effects. But Parkinson's only hits the nigrostrial pathway.
Sunday, October 16, 2016
Study group discussion: Dead space
What is dead space?
Physiologic or total dead space is the sum of anatomic dead space and alveolar dead space. Anatomic dead space is the volume of gas within the conducting zone (as opposed to the transitional and respiratory zones) and includes the trachea, bronchus, bronchioles, and terminal bronchioles; it is approximately 2 mL/kg in the upright position. Alveolar dead space is the volume of gas within unperfused alveoli (and thus not participating in gas exchange either); it is usually negligible in the healthy, awake patient.
Flexion of the head decreases dead space. Why?
Flexion of head decreases anatomical dead space. Therefore, physiological dead space will also be decreased.
Neck extension and jaw protrusion can increase the dead space twofold.
Supine position decreases dead space and the dead space increases in upright position. Why?
In upright position, there is decreased perfusion to the uppermost alveoli.
Intubation decreases dead space by 70 ml approx. Why?
The size of the ET tube is smaller than the trachea. Therefore, reduction in the dead space.
Administration of bronchodilator increases dead space. Why?
The conduction zone, from the nose to the respiratory bronchioles, is dead space. Bronchodilators dilate the brochus and bronchioles and not the alveoli, increasing dead space.
Certain anaesthetics, like halothane and sevoflurane, cause bronchodilation. Hence, an important concept and MCQ.
The cause of increased dead space in general anesthesia is multifactorial, including loss of skeletal muscle tone and loss of bronchoconstrictor tone.
That's all!
Pray that my goals are completed on a timely basis. I need your prayers.
-IkaN
Apoptosis - Quick review
It is a physiologic and a Pathologic phenomenon.
There are 2 pathways of apoptosis-
A. Extrinsic pathway- a/ w activation of caspase 8
B. Intrinsic pathway- a/w activation of caspase 9
Most striking feature- Absence of inflammation.
Earliest feature- Cell shrinkage
Most characteristic feature- Nuclear pyknosis
Friday, October 14, 2016
Diabetes Mellitus - Oral Treatment
Diabetes Mellitus (DM) is a heterogeneous group of disorders, characterised by hyperglycaemia and it's complications.
Hyperglycaemia according to American Diabetes Association is when
1. Fasting Blood Sugar level is more than or equal to 126mg/dL
2. Post prandial Blood sugar is more than or equal to 200mg/dL
The interesting part is here
DM Type 2 is either because of
i) increased glucose production by the liver ( when a person is sleeping) or
ii) impaired insulin secretion ( usually noticed after meals as insulin reserves are not sufficient or there is insulin resistance)
Let's talk of 2 scenarios,
In case i) Fasting blood glucose is high and
In case ii) Post Prandial blood glucose is high.
Now,
For case i), Metformin which is said to decrease the glucose production from liver is a better treatment option.
(Remember, Metformin also works against Insulin Resistance, so it also works in case ii !)
For case ii), since the problem is with insulin secretion or its resistance, Insulin Secretagogs work the best! Sulfonylurea increase the insulin secretion from ß cells in the pancreas, thereby tackling the problem.
Remember, Sulfonylureas are commonly used after Metformin!
If you want a super drug :P to tackle both these scenarios then Metformin and Thiazolidinediones are your best options. However, the side effect profile of the latter one is worrisome so used less often.
Here's one of my favourite quotes, Hardwork beats talent when talent doesn't work hard !
That's all!
- Rippie
Wednesday, October 12, 2016
Lights, Pokemon, Seizures!
Photic-induced seizures — Photosensitivity has received considerable attention as a seizure trigger. The light stimulation may come from a natural or artificial source, in particular television shows and video games.
Deviation of the tongue, jaw, uvula and lips in cranial nerve palsy mnemonic
So in this post, I'll be taking about what deviates where with a mnemonic! Yaay!
What? Jaw, tongue, lips and uvula.
Let's start with LMN lesions of the respective cranial nerves.
Tuesday, October 11, 2016
Two interesting facts.
Hey awesomites! Happened to read two interesting things today-
1. The Y sperm is relatively lighter due to the acrocentric chromosome, amounting to the relatively skewed sex ratio towards males across the globe.
2. Homeobox gene 8 controls the expression of forelimbs, messing with it causes alters the position of the forelimbs.
That's all!
Monday, October 3, 2016
Concepts vs mnemonics
"There are two ways to learn something - One is through pure logic ie, from first principles (building up a concept). The other is mnemonics (To help retrieve info quickly... To avoid all the time and thinking taken to derive it).
The best thing is to learn both ways. If you forget the mnemonic, you can derive it from the concept. If you forget the concept, you'd at least have the mnemonic." - SG
Many people question whether mnemonics really help. This is what I have to say in explanation. Learn both like SG said. They'll help if you manage to remember, if you forget, you can use your knowledge and understanding to come to the same conclusion.
That's all!
SG is a good friend and is very philosophical on learning. These are some random thoughts that she sent and I thought of sharing them because I strongly agree!
-IkaN
Sunday, October 2, 2016
Transmission of toxoplasmosis
Toxoplasmosis is transmitted through:
Cat bite
Droplets
Orofecal route
Cat scratch
This is a tricky question if you haven't revised parasitology. You'll vaguely remember the association with cats, so you'll be tempted to pick one which mentions the word cat.
Remember, toxoplasmosis is transmitted through cat feces, so orofecal route is the correct answer.
That's all!
-IkaN
Saturday, October 1, 2016
Treatment of Babesiosis
Babesia, Quinine, Clindamycin
Friday, September 30, 2016
Step 2 CK: GBS prophylaxis mnemonic
Hi!
Drugs used for GBS prophylaxis mnemonic: PACE CV
Penicillin
Ampicillin
Cefazolin
Erythromycin
Clindamycin
Vancomycin
Indications of GBS prophylaxis:
- Previous infant with invasive GBS disease.
- GBS bacteriuria / positive culture during current pregnancy.
- Unknown GBS status with:
- Delivery at < 37 weeks
- Amnionic membrane rupture > 18 hours
- Intrapartum temperature > 100.4 (38.0)
That's all!
-IkaN
Thursday, September 29, 2016
Most common sites of bone tumors mnemonic
SAAG mnemonic
Hello!
SAAG is serum albumin ascites gradient.
SAAG is >1.1 in portal HTN, CHF, HVT and constrictive pericarditis.
The mnemonic for this is SAAG is High in conditions with an H.
portal Hypertension
congestive Heart failure
Hepatic vein thrombosis
Heart constriction (Constrictive pericarditis)
For completion, SAAG < 1.1 is seen in nephrotic syndrome, cancer and infections (except SBP)
That's all!
Have an amazing day!
-IkaN
Lofgrens syndrome mnemonic
Wednesday, September 28, 2016
Why smoking is protective for endometrial cancer?
Smoking is a risk factor for quite a number of cancers. But it can be protective for certain diseases as well..like ulcerative colitis.
It is also protective for endometrial carcinoma and how?
1. It reduces estrogen level
2. Decreases weight
3. Associated with early menopause.
Remember that endometrial cancer is due to excess estrogen..and even being obese or having diabetes mellitus is a well known risk factor
Irrespective smoking is bad for health. Each cigarette reduces your life span by 11 minutes or so they say.
Live happy stay healthy
-sakkan
Types of abortion mnemonic
Prostaglandins mnemonic for obstetrics
Hey!
Thought this will help.
Dinosaurs are Extinct. Ex-two-inct.
Dinoprostone is PGE2.
Carboprost. Carbofrost.
Carboprost is PGF2 alpha.
MIsoprostol - M flipped is E and I looks like 1.
Misoprostol is PGE1.
That's all!
-IkaN