Friday, January 30, 2015
Study group discussion: Alcohol and ADH
Thursday, January 29, 2015
Study group discussion: Addictions, Mental health
The mental health care system is even worse in Hong Kong.
Study group discussion: Fecal transplant and uses of urine
Speaking of that, in the show Greys Anatomy, they use poop to cultivate natural flora in a person who overused antibiotics.
I saw a video of that on minute earth on youtube. Esp in conditions of inflammatory bowel disease!
It's called a fecal transplant or something.
It's in trials in many hospitals.
As per JAMA, NEJM.
I read that they're treating enterocolitis from resistant strains of C.difficile by inserting a nasoduodenal tube and administering donor feces
Do you think patients would be as ready to accept a fecal transplant as they would, per say, a blood donation?
Donno about patients but I wouldn't accept a fecal transplant!
I think it differs from different races, cultures to your personal beliefs.
But i guess we all value our life the most. Given as a last resort, I suppose the patient would accept.
It's all about circumstances.
Does anyone have a link to a publication on the fecal transplant?
@above GIYF.
GOOGLE IS YOUR FRIEND.
Giyf haha love that!
Searching on Google is tough. I'd love to be spoon fed with links!
Googling fecal transplants just gives a range of DIY kits...
Put in right keywords, use search tools and the first link is what all you need.
Hahaha gross. DIY fecal transplants sound um... messy.
Do you guys know urine can be used as an eye wash?
But it shouldn't be infected.
It's one of the uses of urine if your stranded with no water.
First use is, of course, drinking it to prevent dehydration.
Idk if you've heard about this in other countries but we in the USA say use urine on jellyfish stings
Oh yes, that too. I watched a Rhett and Link video on YouTube a long time back on the uses of urine.
Study group discussion: Clomiphene citrate
Please can you explain me the mechanism of Clomiphene citrate?
Clomiphene citrate is a Selective Estrogen Receptor Modulator!
Clomiphene citrate's primary action is to block the oestrogen receptors on the pituitary.
Hence, because of the lack of negative feedback..more of FSH is produced.. Hence more follicles.
This primarily used in ovulation induction in woman.. Main example polycystic ovarian syndrome.
Also, in males it is used if the cause of impotency is less gonaodotrophins.
Important viva question is.. Dose in females is 50mg OD but in males its 25 mg.
Ooh. Why is the dose lesser in males?
Oh that.. I never searched for it. But best guess would be in males the breakdown would be slower. Hence less drug.
Also, remember after the follicles are well stimulated injection hcg is given (cause it mimics LH) and brings out ovulation.
Extra: Side effect of clomiphene citrate is ovarian hyperstimulation syndrome in females
But never ever give hcg to a woman with PCOD.. It's contraindicated cause already LH is high. Else you will cause ovarian hyperstimulation syndrome.
Oh it's HCG, I thought it's clomiphene which was the culprit.
From what I read clomiphene does cause OHS by its own... But the gonadotrophins given externally are the major culprits.
One fact HCG is obtained from urine of pregnant woman. Even FSH and LH..urine of menopausal woman. I guess better recombinant counterparts are available though.
The conversation lead to urine and fecal transplants, will be published in the next post!
Study group discussion: Marfans syndrome
Today I learned that if someone has Marfans disease and they complain of a "tearing" feeling in their chest, they are probably having an aortic dissection and need surgery quick. Our patient made it to the hospital alive, but apparently it's commonly fatal.
Aortic dissection presents with pain radiating to the back. The radiation of pain hint is given in many multiple choice questions.
Marfan syndrome patient tend to have weak or bad joint... But how could they hyperextend their finger?
Because they have a defect in fibrillin synthesis. Synthesis of any structure with fibrillin is affected.
Good to know! I'll keep that in mind.
Fibrillin will form elastic connective tissue right?
Ohhh cool! Didn't know the association!
Fibrillin is a component of lots of types of connective tissue, I guess.
Yep
Mini mnemonic on Marfan: Marfan - Fibrillin - Marfibrillin (Merging words to remember!)
Marfan is associated wth ectopic lentis, right?
Yes, Marfans is associated with ectopia lentis. Another condition associated with ectopia lentis is homocystinuria.
What's ectopia lentis?
Displacement of the eye's lens.
Paracellular leak in the thick ascending limb
Study group discussion: Epigenetics
Epigenetic science is a whole new perspective. To bioethics and to humanity.
Yeah there will be some secondary factors that control this epigenetic modulation.
Decitabine and aza cytidine also work by epigenetic modulation.
I didn't get the cytidine epigenetic modulation bit. Can you please elaborate?
Epigenetics is a process where one gene is active at one time and other gene is inactive same time and vice versa.
This is due to some secondary factors.
Drugs like Decitabine and aza cytidine used in MDS has minor mechanism in epigenetics.
That's all I know ;)
Amazing.
Also epigenetics means
he interaction between the nature and nurture. Genetics and environment.
It means that if you're having a gene for diabetes doesn't make you diabetic, until there's a reaction with your environment.
Study group discussion: Deep vein thrombosis
One common fact I read a few days back was after a long journey by plane, our shoes feel tighter. It's cause of venous pooling due to lack of use of calf muscles. Hence, we have slight oedema.
This is important in case of people prone to deep vein thrombosis. So they are at a high risk of life threatening pulmonary embolism.
I use the loo so many times in planes to prevent that :P
Me too.. Shuffled from seat to seat without bothering to put those shoes on.
One documentation of case was for a man who flew for 14 hrs and got pulmonary embolus!
Study group discussion: Fetal hemoglobin
What is the difference between fetal Hb (HbF) and adult Hb (HbA)? In term of the structures?
HbA has two beta chains and HbF has two gamma chains.
The gamma fraction allows fetal Hb to have higher affinity of it for oxygen which allows it to extract oxygen from maternal blood.
And inducing Hb F production is also used in the treatment of sickle cell anemia.
Hydroxyurea is the drug used for the same.
Hb F production starts from 8th week of intra uterine life.
Fetal Hb has more affinity towards oxygen than adult Hb, meaning the oxygen dissociation curve is shifted left compared to normal adult Hb.
Left doesn't leave the oxygen! (http://medicowesome.blogspot.ae/2013/05/oxygen-hemoglobin-dissociation-curve.html)
The primary structural differences between HbF and HbA are located in or near the 2,3-BPG binding site between the γ1-γ2 interface of HbF and the β1-β2 interface of HbA. The net effect of these structural differences is that 2,3-BPG binds less tightly to deoxyHbF by comparison to deoxyHbA. Thus, 2,3-BPG does not stabilize the deoxyHbF as effectively as it stabilizes deoxyHbA, thus accounting for the leftward shift of the O2 saturation curve of HbF compared to HbA when tested with the same concentration of 2,3-BPG.
Fetal hb has more affinity because of poor binding of 2,3-DPG by the gamma polypeptide chain so it can take larger volume of oxygen than adult hb at low oxygen pressure
A higher affinity for oxygen allows higher concentrations of oxygen into fetal circulation, however this also inhibits oxygen dissociation into fetal tissue where the oxygen is needed. To overcome this, other mechanisms are in place to ensure oxygen delivery to fetal tissue: Increased Crit – higher number of red blood cells per blood volume. This is a common reaction to reduced oxygen availability. Exacerbated Bohr effect – acidic pH has a greater effect on oxygen unloading in fetal tissues allowing better oxygen delivery. Acidic pH shifts the fetal oxygen-haemoglobin dissociation curve to the right, so that oxygen unloading can occur at higher oxygen partial pressures.
Adult haemoglobin starts to be produced in utero, at around the 13th week of gestation.
I think it's 30the week the switch over from fetal Hb to adult Hb.
Its by 6th month of life.. That's when majority of a child's RBC shifts to adult haemoglobin. It's important in case of thalasaemia.. Because that's when most symptoms start showing.
What I meant to say was - Initiation of production of HbA starts from 13th week gestation.
At first, there is gradual increase in concentration of HbA until it reaches 20-30% of total Hb.
And the switch is not completed until 6 months of age.
What my hemaologist taught was HbA production will be started from 30th week of gestation and by 6th month of life only HbA is produced.
And the main function of HbF is delivering oxygen in hypoxic condition like immediately after birth.
But don't we need HbF to take oxygen from the maternal blood in the first place?
Because the partial pressures in the placenta aren't enough to allow the transfer from what I've studied.
Everything takes part in delivering oxygen depending upon tissue tension of O2. Before 7th week, there are embryonic Hb like portland, gower, etc.
Embryonic erythropiesis takes place from yolk sac.
From 7th week to 30th week liver.
After 30th week, long bones start erythropoesis.
Gene for both HbA and HbF are present since birth but Its all epigenetics that make these genes to produce one kind in one period and other type in other period.
Oh I didn't know the Hb concept in such depth.
My sir told these details. Epigenetics is given in Robbins 5th chapter.
That's all!
Be sure to let us know if there are any errors or corrections.
-IkaN
Study group experience #1
To future group joiners, make sure you report if such a thing happens to you so that we can ban the user.
Wednesday, January 28, 2015
Medicowesome study group on Whatsapp
-IkaN
Apoptosis: Proapoptotic and anti-apoptotic molecules mnemonic
Hello! We are going to have life and death talks today.
Just kidding. We'll be talking about apoptosis - remembering molecules that promote or inhibit apoptosis, as the title suggests.
Let's start!
"Bax kills cells with an axe."
BAX promotes apoptosis.
"Caspase converts cells into casper (the ghost)."
Caspases promotes apoptosis. (Conversion into ghosts, that is, death).
"Dying is bad."
BAD promotes apoptosis.
Getting baked is like dying.
BAK promotes apoptosis.
I think bcl 2 is saying, "be clever, live" reminding us to live longer.
bcl 2 inhibits apoptosis and thus, is anti-apoptotic.
That's all!
Life and death.
-IkaN
Tuesday, January 27, 2015
Oral hypoglycemic drugs and weight - Weight gain or weight loss mnemonic
"SIT" is my memory aid for remembering this. (Sitting at home makes you fat.)
"Metformin forms you in,
makes you thin."
(I could be a poet! :P )
That's all!
-IkaN
Prolactin mnemonic
Monday, January 26, 2015
I have no idea about USMLE Step 1
- You'll find most of this post useless and redundant.
- I have marked asterisks (*) for important points you might wanna look at :)
- I haven't sequenced them in order.
- Ignore grammatical errors that I may have overlooked.
- Some of them have shout outs to Indian medical students (Simply because I know the Indian system better and it's hard to separate those points and write em again. Please don't mind that. I love you all equally, medics of the world!)
Kaplan notes and Goljan pathology.
* Don't buy First Aid initially since you'll be requiring a new edition in the last 3-6 months of your prep.
You'll have to start with Kaplan videos. Supplement them with notes. Add extra points, stuff not mentioned in the videos to it. Hear Goljan audio while travelling, cleaning the house. Read the book and know it cold.
Recorded lectures of an absolutely amazing pathology professor, Edward Goljan.
Anatomy, Biochemistry, Physiology, Pathology, Microbiology, Pharmacology and Behavioural science.
It's Biostatistics from Preventive and Social Medicine (3rd year minor for Indian medical students) and Psychiatry from Medicine (3rd year major for Indian medical students).
Yes, I think people who give the exam after they complete final year score better than those who give it in their basic science years simply because people from first year and second year lack clinical knowledge essential for Step 1.
- You're utilizing your time efficiently.
- You'll need the score to apply for electives in certain colleges.
- You get "done" with the exam and you can chill out.
You'll need an ECFMG id to give the exam. That requires college stamp. You'll get the instructions online. If you can't figure it out, email me.
3-6 months before you feel like giving the exam, you make the id. It takes approx 1 month to make.
The thing with ECFMG id is that you need to pay a certain amount of money to make the id. That's why, I recommend you to make it when you're absolutely sure about giving the exam.
It's an online question bank. They are questions which are similar to those on Step 1 and essential to get an idea of what the exam is like.
It is a resource you would like to use in the later months of your preparation because it is difficult (You can't do it without having any knowledge) and because it trains you for the real exam.
Many. Kaplan Q bank, USMLE Rx to name a few.
* Unlike uWorld, you can start with other question banks well before the exam because they are not very similar to the real exam, they scare the shit out of you with facts you don't know and motivate you to study.
Mock exams created by examiners who write questions for the test. They predict your score.
Yes. Research and electives are required for residency.
That is later. In USA. Give your step exams first.
For Indian medical students - You can do research in India as well but it has no value. You'll get experience but that's about it. No credibility.
Procedure in very short: You'll need to contact the HOD of that department, get permission from ethics committee and contact a professor who would like to mentor you for research.
Nope. They help you in residency match. Just get a good score for now and worry about the other details later.
Giving the test you failed in while studying for the next exam
I'm a third year med student and today I just got my result for the annual exam and I flunked in biochem :'(
It's been like the end of the world to me today. I feel so hopeless and helpless.
I really have no idea how I'm gonna retake the exam while having the 3rd year classes side by side... I really really hope that I can do as what you did and be just awesome as you are in the future but right now I don't have a clue. Any suggestion about how to manage things side by side? - Asked on Tumblr
I'm sorry you have to go through this :(
It's not the end of the world even though you feel like it is. There is so much ahead of you.
Although I have never been through it, I had a friend who had failed and had to give the exam again in the next year.
This is what we did -
Regret and forget:
You can take a few days off to cry, feel bad about it. Regret, hate, feel guilty and blame whoever you want to. But be done with it. Once your few days of sadness are over, you have no right to complain, feel hopeless EVER. You're not allowed to feel like this again. It's very similar to what they show in movies - write on a piece of paper and burn it.
This is important because you can't feel bad for yourself while you're preparing, you can't have low energy or blame others in that phase. It's going to be very hard and you have to be strong.
Get your spirits up: Believe that you can do this. Half the battle will be in your head - the previous failure will haunt you and the anxiety will try to take over. Make sure your winning the battle in your head. YOU CAN DO IT.
Plan: Now, you have new syllabus to study and give the re-exam, right? How many months for the re-exam? How much time do you have to study for the new exam?
Tips: You wanna study the very important and parts you were weak again very throughly.
You can do it side by side, you'll need to discipline yourself to study one particular amount of time for the re-exam and one slot for the new syllabus. You can give less time for the new stuff and then study over time for it later. Passing this subject is your priority.
I love this part, telling the success story - My friend did it. She passed the exam the second time and did good in the next year subjects as well. If she can do it, you can do it too!
You will do great and you'll be much more awesome than me in the future. I believe it! :D
(The fact that you spoke about it and aren't giving up is evidence of the same.)
Just work really hard and keep fighting your way through it. All the very best! Drop by and update us on your progress sometime later :)
Avoiding negative thoughts
Low self esteem is a challenge I'm also facing. I can ignore it while I'm studying or doing something but it's always in my thoughts during transportation times. - Tumblr
I know ignoring negative thoughts can be really hard, especially when your mind is free to wander while traveling. I listen to motivational tapes or audio lectures to keep me occupied when I wish to ignore these thoughts while transporting myself.
Thursday, January 22, 2015
Wednesday, January 14, 2015
Lead poisoning mnemonic
L: Lead lines
E: Encephalopathy (Common in children)
A: Anemia (Pallor is earliest sign)
D: Drops (foot drop & wrist drop)
B: Basophilic stippling, Burtonian line (on gums)
A: AminoLevulinate (ALA) Dehydrase and Ferrochelatase (Heme Synthase) affected
T: Toys (Lead toys cause toxicity in children)
T: Tremor
E: Encephalitis
R: Renal Tubular Acidosis (Fanconi syndrome)
Y: Young children affected
Monday, January 12, 2015
Self doubt and low self esteem
I always had dreams of being a doctor. I want to work hard and I want to help people. The thing about not deserving to study medicine, low self esteem and self doubt is getting me down so bad.
How do I deal with that? Please help me, looking forward to your honest reply." -Asked on Tumblr
Sunday, January 11, 2015
Inability to concentrate before exams
At times, our concentration does begin to taper right before exams. Maybe it's because exams are pressurizing and we don't want to learn while we are stressed.
Here's what you can do, with varying success -
Read out loud: It's just a way of making sure you are studying something. If your mind starts wandering, you'll won't understand what you are reading out and you'll alert yourself.
Write: Fill up pages with words that are important. It helps you stay on topic and concentrate. Whenever I am unable to concentrate, I make mini notes on what I will write in the exams. (I also write extra points that others are not likely to write in the exam, pretend my answer is going to be the best - Just to boost my spirit and make myself feel better!)
Friday, January 9, 2015
Pathophysiology of symptoms in anemia
Iron is vital to the brain’s dopamine system. Dopamine is a neurotransmitter that plays a role in neural networks including sleep activity. Hence, iron deficiency causes sleep disorders like insomnia.
Reduced oxygen supply to the myocardium causes angina.
-IkaN
New year
USMLE for Indian medical students
As soon as you have the slightest gut feeling that you might wanna go to the US. It's better to start preparing early and then change your mind than to start late.
I started in March of my third year. Ideally, you should start in your early second year.
It's never "too late" to start. I have a friend who started in internship and nailed the exam within a few months. Preparation time varies.
Sunday, January 4, 2015
Preparing for the USMLE Step 1 exam
Anxiety and depression before exams
Sounds like you need to believe in yourself a little more. You study a lot. There is no reason for you to worry so much!
Friday, January 2, 2015
When you get tired of studying
Yes, it can be! We often get exhausted and feel like we can't take any more information.
In my experience, taking breaks is the best solution for this. I read a research a while back (Don't remember where!) that your performance deteriorates after 45-60 mins of studying depending upon your capacity. If you take a 5-15 min break, however, you do much better.
You can exercise, eat, mediate, dance, listen to music or an inspirational tape if you want in this mini tape. Closing your eyes and lying doing for a while is very relaxing.
Do not use your phone. Your phone has text all over and reading does exhaust you.
I usually get really distracted if I take mini breaks after studying for an hour and don't return to books for another hour. If you have the same problem, you can study for 2-3 hours straight and then take a longer break like a shower, have a long lunch break or a walk around the park.
Change
It had to be related to the medical field with a tinge of young enthusiasm. It is a student's blog after all! After a lot of pondering and questioning, the eureka moment happened. Which word makes us awe in amazement? Awesome! Medicowesome!
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If you have a good idea, do it. You don't need to be perfect. |
Wednesday, December 31, 2014
Why does hypophosphatemia cause an increased affinity for oxygen in the blood?
Remember the reaction that generates 2,3-Bisphosphoglyceric acid (2,3-BPG)?
Tuesday, December 30, 2014
Submissions: Fever with rash in childhood mnemonic
Dealing with stress and studying before exams for medical students
Exercise. Exercise gives you endorphins. Endorphins make you happy. Happy people kill exams!
(Do 20 jumps right now and then read further :D )
Smile. Look at this smiley (:
Monday, December 29, 2014
Tissue plasminogen activator mnemonic
Greetings people!
Tissue plasminogen activator is an enzyme that catalyzes the conversion of plasminogen to plasmin, the enzyme responsible for clot breakdown.
It is used in the treatment of embolic or thrombotic stroke.
Contraindicated in hemorrhagic stroke and head trauma. The antidote for tPA in case of toxicity is epsilon aminocaproic acid.
Mnemonic is, "TPA"
T - Thrombotic and embolic stroke (Use)
P - Plasmin (Mechanism of action)
A - Aminocaproic acid (Antidote)
The dose mnemonic is, "TPA" again!
T for ten:
10% of dose given as bolus.
P mirrored looks like a 9:
0.9 mg/kg dose, maximum 90 mg.
A for an hour:
Rest of the dose is given as an infusion lasting for 60 minutes.
That's all!
-IkaN
Dominant hemisphere and handedness
Hello!
This is practical exam related concept.
In a patient with neurological symptoms, you'd like to know whether the person is left handed or right handed. Why?
Dominant hand is important in medicine because it helps us figure out the dominant hemisphere - especially, in patients with stroke.
People who are right handed have their left cerebral hemisphere dominant. 70% left handed people are left hemisphere dominant.
To figure out handedness, you can ask the person with which hand he writes. If illiterate - You can ask with which hand he prefers to eat, combs hair, etc.
Threading a needle is an excellent way to determine handedness because very frequently people tend to hold the thread in the dominant hand and hold the needle with the non dominant hand.
That's all!
I'm left cerebral hemisphere dominant. You?
-IkaN
Submissions: Cardiovascular system notes
Saturday, December 27, 2014
Breath sounds mnemonic
Inspiration is longer than expiration. No pause in between.
They are normal.
Mnemonic:
VE is short. (Expiration is short)
VesI is long. (Inspiration is long)
Inspiration and expiration occupy the same duration of time and are separated by a pause.
Mnemonic:
B for Bronchial, B for Both are equal.
Both are equal with a pause.
Heard in: Bronchial asthma, Emphysema.
The B for Both are equal. The hyphen reminds me of the pause.
Everything is awesome :D
-IkaN
Wednesday, December 24, 2014
Submissions: USMLE notes
Monday, December 22, 2014
Wednesday, December 17, 2014
Tuesday, December 16, 2014
Trichomonas vaginalis mnemonic
I make lists of words so that I remember about them (especially for theory exams!)
Tubal ectopic pregnancy mnemonic
Sunday, December 14, 2014
Pathology brain tumors mnemonic
We'll be talking about some brain tumors today.
All of the mnemonics might not work for you, so take only what you need :)
Saturday, December 13, 2014
Fothergills repair or Manchester operation mnemonic
We'll be learning about one of the operations used in the treatment of vaginal prolapse.