Showing posts with label medical finals. Show all posts
Showing posts with label medical finals. Show all posts

Friday, 18 November 2016

How do I study for this?

Studying in my final year of medicine, there is one question I get asked by the years below me all the time. "how do you study for this? what should I study from, the books, pubmed or the internet?"
Compared to twenty-thirty years ago and with the boom of the internet we have a huge amount of resources at our disposal. And its this huge variety in educational resources makes this question an increasingly common one. Here is my answer:

Disclaimer: First of all, everyone has their own best method, some people learn best from videos, others from quizzes and case studies, this is an important disclaimer when considering study methods.

What is there?:
  • Fundamental textbooks
  • Wikipedia
  • Pubmed
  • Uptodate
  • Lectures and lecture notes
  • Clinical case and question books/sites
  • Revision books
  • Senior and classmate notes
  • Group sessions
  • Youtube
  • The ward
  • medical blogs
  • FOAMed/MEDed and twitter
(SKIP TO SUMMARY/ANSWER AT THE END IF YOU LIKE)


Textbooks:
The bread and butter of medical study. Often huge, boring and full of what some may consider unnecessary detail. Older doctors will swear by them and the younger doctors may completely avoid them. Use your textbooks as reference! No one has time to read the entire Goodman and Gilmans pharmacology or Kandels textbook of neuroscience. Textbooks are becoming increasingly thicker and thicker and the level of information can terrify first and second year students. When it comes to the fundamentals however, use them! but look for concise or targeted student versions:
Anatomy - Greys anatomy for students
Physiology- Berne and levys physiology
Pharmacology- Rang and Dales
These kind of books for the basic sciences are a must read in their entirety, try and find a smaller concise version for each core subject afterwards. Its in the clinical subjects where you should only use textbooks for reference, Harrison Cecils etc.

Read them, make brief notes, highlight important concepts, bookmark pages, the fundamental textbooks need to look like they have survived a train-wreck after the first couple years of medicine.
moving to the clinical years is where things get tricky...


Wikipedia:
Whenever you google a clinical condition the first post is most likely to be wikipedia post. Hugely informative and structured perfectly with sections for diagnosis, presentation, prognosis and related diseases etc. Take it with a grain of salt. Wikipedia is created by hardworking freelance contributors, many the posts are accurate and uptodate but you never know, they may not be! Until wikipedia has more efficient controls in place, its best used as a quick refresher and definition search tool 

Pubmed:
The centre of all that is EBM (eveidence based medicine), you can effectively answer any clinical question here for free. however, its hard work! often you have to search  hundreds of articles, and even if you find a nice review, it will probably contain many pages of information that you just arn't ready for yet as a medical student. which brings me to Uptodate

UptoDate:
Requiring a login or at least a registered institution, its not free! However this is the best place hands down to answer any clinical question you may have. The information is reviewed regularly and all the relevant clinical information that is interspersed through articles on pubmed is concentrated here. Again there is the issue of perhaps being a little too advanced for the average medical student. Best used a reference to clinical questions especially patient and disease management questions. 

Lectures:
Tedious, time consuming and highly dependant on the skill of the lecturer. We have all sat through a lecture so boring that you struggle to keep your eyes open, it can be a waste of time. On the contrary we have all been to that amazing lecture that kept us on the edge of our seat and full of curiosity at the end. Sometimes I feel I learn more from certain lectures than I ever could in a day reading through the relevant textbook. As much as we moan and and groan about them, lectures are important! attend them, drink coffee, and make notes! lectures will form the backbone of your study and are an important place to cement the core concepts you will need to study in revision. The medical exams are often about what you were lectured on remember.

Clincal cases and question books/sites:
Use these after you have studied, prior to exams. The best way to really test if you really know a subject is to test yourself. Often through testing yourself you find the holes in your knowledge base. it really works! Clinical case books are excellent, a little tedious but are probably the best way to test yourself in a way that will prove to be useful when you start work as a doctor (that special way of thinking when you approach a patient). Multiple choice question books and similar quiz books have now been surpassed by websites with endless question banks. The BMJ on examination site (which I use regularly) is just fantastic. One of my colleagues swears by the Firecracker app, where he answers about 50 quick questions a day on the metro/underground on the way and back from university. Unfortunately there is a catch, these questions banks can be incredibly expensive, so maybe its best to use these resources only before the big exams such as finals or end of phases.

Senior and classmates notes:
Forget it, the source isnt always reliable and most of the learning is in producing the notes yourself. One of my colleagues makes a killing selling his anatomy notes to first years, perhaps a good buisness solution, dont fall for it. On the plus side, notes may be targeted to an exam well and help when you have missed lectures. My advice, avoid if possible.

Group sessions:
Moving a bit away from the topic of resources, group studying is a real preference for some people. I think I will address the debate 'group vs solo studying' in another post. It depends a lot of the group itself and the study method, tackling clinical cases together is a good method.

Youtube:
What a resource, there are hundreds of videos on youtube and many of them are fantastic. I mentioned in a previous post Paul Bolin lectures and how they are brilliant for students preparing for the USMLE. Youtube is probably the best place for people interested in surgery and procedural medicine. Intubation, inserting catheters, chest drains and surgical approaches its all there (although can take some searching to find decent videos and in the correct language). Its incredibly difficult to learn a procedure from reading a book or passage, they are best learnt visually in a step by step matter, or better yet on the ward!!

The ward:
A must for all students. Spending time on the wards presents potential learning opportunities in areas which are favoured by in examinations, particularly practical assessments. Remember that medical school is a precursor for life as a doctor and thus, adequate exposure is necessary to assimilate the abilities expected of new doctor when they start. Although tempting to spend less time on the wards, especially near exams, try not to skip these session. Take a pen and note pad, note down everything you learn or new drug/disease/concept you hear. Try and take at least one history every time you are on the ward.

Medical blogs (like me :)):
There are some incredible medical blogs out there, life in the fast lane and emergency anatomy to name a couple that I usually use. It can be difficult to keep track of the variety in posts and to stay on track when studying a particular subject. You have to be careful with the accuracy of the information and sometimes it best to use the references in the post and read the original material before even reading the main post. I kind of feel that blogs are actually best for gaining an insight into the world of medicine, for opinions on the latest research and methods and for all that humanitarian stuff that forms much more of medicine than most of us are aware about. Patient care and professionalism are fundamental to a great doctor, it can be hard to find a good understanding about some of these issues from textbooks, blogs are invaluable! (not many textbooks will have a part about how to study like this will they ha).

Twitter:
There is an amazing movement happening in medical education at the moment, the hashtag or FOAMed movement. Hashtags like #FOAMed and #MEDed are attached to various things from the internet (videos, blogs, websites) to form this huge collection of medical education resources. More specific hashtags can be used to focus on the subject at hand #FOAMcc for crtical care for example or even summarize the findings from important conferences like #AHA16. Its a wonderful movement and its keeping medicine uptodate almost instantaneously and completely for free. Watch this space!

Ok I have rambled on a bit now and my lunch break is ending. Here is my best answer to the question above:

Attend lectures, make notes and read through them briefly that same day. Use the lectures to form a kind of back bone of core topics. Use the text book to cover these core topics by subject. And use the entire textbooks when addressing core fundamentals like anatomy and physiology. 
When you start clinical modules, use smaller review books with a more concise approach (I'm thinking Kumar and clarks vs Harrisons for example or Surgical talks vs Sabistons surgery). Whenever you have a clinical question use Uptodate and Pubmed. If you feel you need to understand something better use the fundamental textbooks. Try and explore the topics with twitter and blogs. When you are close to exams use clinical case books and online question banks, referring to the textbooks when you find a hole in your knowledge. 

NOTEs:
_The Eisenhower box to time management, works for studying too:
Remember you don't have to study everything in order, spaced repetition is the better way of learning in the long term.

Any questions feel free to comment and Ill get back to you, gotta runn..

Sunday, 12 June 2016

Acute Otitis Media

Acute otitis media (AOM) is a frequent disease in childhood with over 90% of children over three years old having had at least one episode. It is a difficult diagnosis and the major cause of antibiotic misuse and abuse. (AOM is the most common indication for antibiotic prescription).

Definition:
Rapid onset of signs and symptoms of acute infection within the middle ear with evidence of effusion.
(recurrent OM: 3 or more episodes of AOM in the previous six months or 4 or more in the last 12 months)

Why so common:
It is to do with the eustachian tube in children being smaller and more horizontal than in adults (<10degrees, in the adult >60degrees angle). The nasopharnyx is a carrier site for many pathogens and their virulence is increased after a viral illness typical of the winter season such as influenza or rhinovirus. This explains why AOM rates are increased after the winter season and in children that attend daycare (lots of children mixing viruses).

Etiology:
the so called infernal trio is responsible for majority of AOM cases through all pediatric ages:
Streptococcus pneumonia
Haemophilius influenze (non typeable (NOT HiB!!))
Moraxella Catarrhalis
(could add Group A Beta Hemolytic Streptococcus as the fourth agent).

Complications and consequences:
Potential for developmental delays
Chronis effusion requiring tympanostomy tube insertion (30% will undergo repeat infection within 5years)
Mastoiditis! The rates are increasing now, this means admission to hospital with IV antibiotics and can result in severe CNS complications

Risk factors:
Daycare (six children appears to be the cutt off), tobacco smoke exposure (dont forget 3rd hand exposure parents!), seasonality (more in winter and spring), bottle feeding, use of push-pull top bottles (negative pressure in the middle ear draws bacteria up), pacifier use, obesity, cleft palate, Male more,
African americans more.
(exclusive breastfeeding upto 6months reduces AOM rates compared to formula fed)

Diagnosis:
Correct diagnosis is essential, do not treat unless the diagnosis is sure
Acute onset of symptoms
Inflammation of tympanic membrane (assess with penumatic otoscope)
Presence of effusion (will appear as bulging tympanic memebrane on otoscope)

Symptoms:
Classically earache, fever and irritability
The symptoms of AOM are often nonspecific and no one symptoms is present in more than 50% of cases, look at the ear!
Use the COMPLETES mnemonic in assessing the ear: Colour, Other, Mobility, Position, Lighting, Entire surface, Translucency, External ear, Seal.
About half the children will have obstructing cerumen which can be a problem.

Treatment:
Pain managment with paracetomol or ibruprofen
(Paracetomol 10mg/kg/does max 4grams)
Antibiotic therapy is based on Age, laterality and severity
give antibiotics to: all children under six months, all children between 6months and 24months unless unilateral and mild and to over 24months only for severe bilateral disease. in all other cases use the watch and wait approach.
Amoxicillin 80-90mg/kg/day divided in 2 doses max 3grams/day
Up to date with vaccinations, note: Pneuomcoccal vaccine has decreased AOM RATES

Monday, 25 January 2016

Rheumatology: Fibromyalgia

Fibromyalgia AKA fibromyalgic syndrome (FMS) is one of the most common causes of chronic pain. It is characterised by allodynia, hyperalgesia and a wide range of other symptoms.
On average a FMS patient will have seen three or four different doctors before being diagnosed (taking an average of 2-3 years)!

Epidemiology
Prevalence 2-4%
Female (9:1)
35-60yrs (working age)
increased incidence in patients with autoimmune disorders

Symptoms/Signs
Widespread pain with tender points (pain elicited with palpation of these specific points)
Fatigue (doesn't improve with rest, number one complaint after pain)
Morning stiffness
Sleep disturbances (pt sleeps well but wakes up more tired)
variety of other disturbances; Headaches (tension-type and migraine), paresthesias, trouble concentrating, variable bowel habits, depression, mood and affective disorders, temporomandibular joint syndrome,  idiopathic back pain, non cardiac chest pain, vestibular complaints, ENT symptoms...

Diagnosis
Diagnosis is entirely clinical, by exclusion generally.
Rule out differentials, be vigilant of common co-existing conditions like irritable bowel syndrome
ACR 2010 diagnostic criteria
Reasonable diagnosis:
>Chronic widespread pain for greater than 3 months
>pain at 10 or more tender points (see image linked for specific locations, there are 18 defined areas)
(> also aiding in diagnosis; presence of Fatigue/stiffness and sleep disturbances)

Treatment
Centred towards the pain, but be aware that many FMS patients have concomitant psychiatric problems, so psychiatry referral suggested. Reassure patient its a physical diagnosis and warn them in some cases the symptoms will never resolve completely.

>Non pharmacological treatment
Exercise, CBT, homeopathy, physiotherapy, acupuncture, diet changes, relaxation techniques
all safe in the long term and may have potential benefits (small % of acupuncture pts had increased pain though)
Graded exercise showed benefits in many patients

>Pharmacological treatment
simple analgesics, tramadol,
tricyclic antidepressants
serotonin noradrenaline reuptake inhibitors (SNRIs)
alpha2 agonists (gabapentin, pregabalin)

Differential dx
Chronic fatigue syndrome (fatigue much more prevalent and severe, more an issue than pain)
Multiple bursitis/tendonitis (good response to local inection treatment, tender points absent)
Rheamatoid arthritis/Osteoarthritis (joint swelling, hands affected)
SLE (rash, systemic sx, ANA)
Ankylosing spondylitis (young male, lower back pain)
Polymyalgia rheumatica (older pt, acute onset, steroid responsive)
Hypothyroidism (weight gain, goitre)
Myositis (weakness more than pain)

Random pearls
  • Although the etiology is unknown it is believed to be a central sensitization disorder, fitting in with the considerable overlap of IBS and dysmenorrhea with FM. A kind of abnormal response of the nervous system.
  • RA and SLE often present as well. 
  • FMS is increased in patients that have suffered a physical of psychiatric trauma (perhaps a starting point of the disease)
  • increase in metabolic syndrome in FMS patients
  • There are three subgroups to further classify FMS patients based on pain control, tenderness and associated symptoms
  • In USMLE exam 'steroids' or 'NSAIDS' will not be the correct answer answer to treatment options
  • 12th May is Fibromyalgia awareness day
  • One third of FMS patients experience major depression or significant anxiety. 

Resources and Sources:
Medscape Fibromyalgia
Paul Bolin CRASH USMLE video on Fibromyalgia
ArthritisUK Great site for patients
More detailed look at diagnostic criteria

 #MEDed #FOAMed #Fibromyalgia #Rheumatology #Chronicpain #widespreadpain

Saturday, 23 January 2016

5 4 3 2 1... MIGRAINE

Neat trick to remember the features of migraine: (5, 4, 3, 2, 1)

  • >5 attacks a day
  • lasting 4 hours to 3 days
  • 2 or more features: Unilateral, Pulsating, Moderate/severe intensity, Aggravated or causing avoidance of routine physical activity
  • 1 of either Nausea and vomiting or sensitivity to light (photophobia) and sound (phonophobia)

The precise diagnostic criteria can be found here for details: International Headache Society

Treatment: 

  • Avoid and control triggers; e.g. foods containing tyramine (cheese, chocolate, wine), 
  • Mild-moderate: paracetomol, NSAIDS
  • Moderate-severe: Triptans (NO OPIATES!)
  • Refractory: try combinations Triptans + NSAIDS
  • Prophylaxis if more than 3 episodes a month, if it interferes with daily life or acute treatment is ineffective: AEDs, BBs, CCBs, Triptans, 
Some migraines have a characteristic 'Aura' before. Typically visual symptoms, a brilliant scintillating scotoma, lasting between 5-60 minutes

There are also many different types of Migraine, some worth noting;

Basilar type Migraine: accompanying brainstem symptoms e.g. dysarthria, vertigo, diplopia, ataxia. 


Familial hemiplegic Migraine: aura of fully reversible motor weakness, aura lasts unusually long 5 mins to 24 hours, pt has at least one affected relative.

Chronic Migraine: Migraine for greater than 15 days a month, for at least three months. Basically a migraine every other day, very disturbing.

WTF if a Triptan?
5-HT1B/1D receptor agonist, causes constriction of cranial blood vessels and inhibits production of inflammatory neuropeptides. Side effects include: Serotonin syndrome and coronary spasm. also used to altitude sickness.


#Migraine #Neurology #FOAMed #MedED