Medicowesome

Friday, August 25, 2017

MIL: Impetigo

Image: Impetigo contagiosa

Submitted by: Sagar

MIL: Polar cataract

Image: Polar cataract

Submitted by: Sushrut

MIL: Rhabdomyosarcoma of the Right Eye

Image: Rhabdomyosarcoma of the Right Eye

Submitted by: Does not wish to reveal identity

MIL: Psoriasis

Image: Plaques of psoriasis

Submitted by: Dr. Manasi Shirolikar

Introducing Medicowesome Image Library (MIL)

Hello everyone!

I wish to create a visual learning experience by adding images and videos along with what we write.

But since most images on Google have copyright issues, the Medicowesome authors can't use them :(

That is why, I'm asking medical students, residents and acquaintances to send me images of what they see to help create the Medicowesome Image Library (MIL).

It can be anything - a histology slide, a microbiology agar, a pathology specimen, a rash, an instrument, an x-ray - anything!

Treatment of streptococcal tonsillopharyngitis: Important points for USMLE

Hello!

Here's a quick post of treatment of "strep throat" (my slang for "Tonsillopharyngitis due to Streptococcus pyogenes, also known as group A Streptococcus.")

Question on sedative-hypnotics

Hello awesomites! Let us discuss about our previous question.

Question) Which of the following statement(s) is/are true regarding benzodiazepines?
A) It acts as GABA agonist
B) Diazepam is a short acting benzodiazepine
C) Diazepam causes lesser respiratory depression than midazolam
D) Nitrazepam is metabolized in liver
E) Diazepam has higher abuse potential than midazolam
#Pharmacology
#Medicowesome

So here is answer of our previous pharmacology question
Correct answer is C and D.
C) Diazepam causes lesser respiratory depression than midazolam
D) Nitrazepam is metabolized in liver.

Explanation:
BZDs has facilitatory action. They are not a GABA agonist.
Diazepam has rapid onset of action but prolonged action due to formation of active metabolite.
BZDs like nitrazepam, flurazepam etc are metabolised in liver by dealkylation and hydroxylation.
The dependence producing liability of BZD is low. They are Infrequently used now.

-Ojas

Classification of sedatives & hypnotics + notes for NEET

Hello awesomites!! So, here are my "Single page notes" on sedative-hypnotics. To the end of this post I have uploaded picture of my notes. So lets begin.

Classification:It is classified into 3 categories.

1)Barbiturates

Key points :
a) No antidote.Poisoning treated by gastric lavage, symptomatic treatment and forced alkaline diuresis
b) Steep curve dose.
c) Inhibits all areas of CNS. Most sensitive is reticular system
d) It inhibits all areas of CNS. Mostly reticular system which leads to inability to maintain wakefullness.
e) May cause "Hyperalgesia".
f) Duration of REM sleep and stage 3, 4 of sleep cycle decreases
g) Contraindictated in acute intermittent porphyria
i) Hangover is common

Barbiturates are further classified into three types.

A) Long acting
Phenobarbitone.

B) Short acting.
Butobarbitone
Pentobarbitone.

C) Ultra short acting
Thiopentone.
Methohexitone.

2)Benzodiazepines

Key points:
a) Antidote:Flumazenil is competitive antagonist. It takes 30-60 minutes for its action.
b) Flat dose curve.
c) Duration of REM sleep decreases but frequency increases.
d) Hangover less common

They are further classified into three categories

A) Hypnotics

-Diazepam:Causes analgesia(Barbiturates causes hyperalgesia as mentioned earlier.) and it also causes muscle relaxation
-Flurazepam :Paradoxical simulation and increase nightmare
-Nitrazepam:Increase REM sleep (Rest decreases)
-Temazepam
-Flunitrazepam : Tasteless BZD called as "
" Date rape drug"
-Midazolam:Causes blackouts and ataxia.
-Alprazolam
-Triazolam:Responsible for paranoia and other psychiatric disturbances.

B)Anti-anxiety

Remember OLA-CD

-Oxazepam
-Lorazepam:Absorption from intramuscular site is regular for other drugs its irregular.
-Alprazolam
-Chlordiazepoxide.
-Diazepam.

C) Anti-convulsants :

-Diazepam
-Lorazepam
-Clonazepam
-Clobazam

Remember: EasT LOT
E=Estazolam
T=Temazepam
L=Lorazepam
O=Oxazepam
T=Triazolam

These drugs directly conjugated without metabolism to active products. These are short acting and can be used in liver failure

3)Newer non-benzodiazepine hypnotics:

-Zopiclone:

a) Increases stage 3 and stage 4 duration

b) Indicated for patients BZDs for induction of sleep
c) Less rebound insomnia and hangover.
b) Active metabolite is eszopiclone.

-Zolpidem
a) Lacks anti-anxiety, muscle relaxants, and anti-convulsants actions.
b) Use in short term treatment of insomnia.
c) No rebound insomnia and hangover.

-Zaleplon
a) Decreases sleep latency without affecting sleep time.

-Suvorexant:
a) Its is Orexin antagonist. Orexin is wake-fullness receptor.

Ojas

Wednesday, August 23, 2017

Medicowesome secret project: Red

What is the secret project? How can I participate?

What is Medicollabowesome? How can I collaborate?

Image Based MCQ on Instruments

Hello awesomites!
Yesterday we posted an Image based MCQ on Instruments and here is the answer to the question.
#Image_based
#Instruments
Q. What is the inner diameter of the device shown in the picture if it is to be used in adults?

A. 2-3 mm
B. 8-9 mm
C. 12-15 mm
D. 21-23 mm
The correct answer is B. 8-9 mm. The image given shows an Endotracheal tube that is available in different sizes for different age groups.
Internal diameter 3mm - 6mm is used for Paediatric cases.
Typically, an 8.0 or 8.5 mm for adult men and 7.5 to 8.0 mm for adult women is an ideal choice.

Thanks for your active participation in the question.

MD Mobarak Hussain (Maahii)

Monday, August 21, 2017

Cushing Vs Curling Ulcer

Hello!

Its time to differentiate between two confusing ulcers - Cushing and Curling.

What is Cushing Reflex?
It is a triad of Bradycardia, Hypertension and altered respiration following Head injury.

What is Cushing Ulcer?
Stress Ulcer following Head injury.
Most common site - Acid producing area of Stomach.

What is Curling Ulcer?
Stress Ulcer following Burn.
Thomas Blizzard Curling.
Reduced plasma volume leads to ischemia and cell necrosis of the mucosa.
Most common site - 1st part of Duodenum.
cURling = bURn

This may help you to remember the difference between these two.

Thanks

MD Mobarak Hussain (Maahii)

Latanoprost and Pilocarpine never go together

Latanoprost increases the uveoscleral outflow of the aqueous humor. Pilocarpine has a constrictive effect on the ciliary body as a whole. Hence, when the two are used together, their effects end up getting nullified with the physician bungling to achieve the target IOP.

That's all!

-Sushrut Dongargaonkar

Medicollabowesome: ENT Manifestations of HIV Infection

What is Medicollabowesome? How can I collaborate?

Hello everyone!

We, the Medicowesome authors, decided to do something new this month and bring to you - Medicollabowesome.

The idea originated from wanting to see how different people present information uniquely on the same topic.

The Medicowesome authors decided that most of us will (try) to write on one particular topic every month.

Hopefully, we will learn so much together :D

The topic for the month of August: HIV & AIDS.

We've already begun writing (:

I invite readers to participate in Medicollabowesome too by emailing your article to us!

Email the title, post and author name to medicowesome@gmail.com with "Medicollabowesome" in the subject line.

This is so exciting!

-IkaN

Sunday, August 20, 2017

Medicollabowesome: CD4 and Cavitatory lesions in HIV

What is Medicollabowesome? How can I collaborate?

Medicollabowesome: AIDS - Symptomatic phase association with CD4 count

What is Medicollabowesome? How can I collaborate?

Drug of choice : Dermatology

Hello everyone!
Here's a collection of Drugs of choice (DOC) for some Dermatology conditions. These are some of the most commonly asked questions in Post Graduation entrance exams.

1. DOC for severe erythrodermic psoriasis?
Cyclosporin

2. DOC for erythrodermic psoriasis?Methotrexate

3. DOC for pustular psoriasis?
Acitretin

4. 2nd choice for pustular psoriasis?Methotrexate

5. DOC for arthritis mutilans?
Etanercept

6. DOC for impetigo herpetiformis?
Systemic steroids

7. DOC for psoriatic arthritis?
Methotrexate

8. DOC for psoriatic erythroderma in pregnancy?
Systemic steroid

-Md Mobarak Hussain (Maahii)

Thursday, August 17, 2017

Role of Mastoid cells

Role of Mastoid air cells.

Clubbing

CLUBBING:

Bulbous enlargement of the distal portion of the digits due to increased subungual soft tissue.
It is also known as the "Hippocratic fingers", as it is believed that perhaps Hippocrates was the first to document clubbing as a sign of disease.

Grades of clubbing-
Grade I- presence of fluctuation test °
Grade II- obliteration of Lovibond angle*
Grade III- parrot beak or drumstick appearance
Grade IV- hypertrophic osteoarthropathy (HOA)

*Refer the diagram
°Refer the video clipping

Theories of clubbing-
1. Neurogenic theory- vagal stimulation via neural reflexes can lead to proliferation of connective tissue at the distal extremities resulting in clubbing.

2.Humoral theory- Normally lungs throws out all the soluble substances by inactivation. But in case of lung problems, these systems reach the systemic circulation in active state and stimulate the changes seen in HOA (growth hormone, PTH, bradikynin, prostaglandin, ferritin)

3.Hypoxic theory- Hypoxia is suggested to be a stimulus for HOA. It leads to opening of deep arteriovenous shunts and fistulae which increase blood flow to the extremities and leads to hypertrophy.

4.Platelets derived growth factor- Normally megakaryocytes and large platelets get destroyed in the lungs. But in lung pathology they escape the lung and reach the distal extremities. Here they interact with the endothelial cells and release platelet derives growth factor (PDGF) post activation. PDGF and other mediators then activate the fibroblasts and transforming growth factor beta which lead to collagen production and connective tissue laying down ultimately giving rise to clubbing and HOA.
This is the latest accepted theory.

Causes of clubbing-

'CLUBBING'

C - cyanotic heart diseases, chron's disease
L - lung causes (lung abscess, emphysema, interstitial lung disease, bronchogenic carcinoma, tuberculosis)
U - ulcerative colitis
B - biliary cirrhosis
B - benign mesothelioma
I - infective endocarditis, idiopathic, inherited
N - neurogenic tumors
G - graves disease

Shivani Mangalgi
Medicowesome 2017

Courtesy YouTube

Hypergraphia - An intriguing brain anomaly

HYPERGRAPHIA
It is a condition in which an individual feels the driving compulsion to write; the overwhelming urge to write.

Hypergraphia has also been called 'midnight disease'.
Well based on how we perceive it, the "disease" could either be all about writing or writer's block.

Neurologically-
This unstoppable drive to write can be triggered by temporal lobe epilepsy(hippocampus and Wernicke's area in specific), intolerant mood disorders or dopamine.

What is very fascinating about this condition is that there are NO other vicious symptoms (other than a little irritability-which is quiet expected) and the fact that the patient can go on writing on anything from toilet papers to wall to even roads.

And what is more fascinating to know is that many famous authors and poets like Sylvia Plath, Stephen King and Leo Tolstoy (that's how the world got "War and Peace") suffered from hypergraphia.

Ingenious result from a brain defect.

Now a question might arise..if the quality of writing in these patients is any good?
To answer this, it is important to know that patient with hypergraphia exhibit wide variety of writing style and content. To elucidate this statement, let's go through few accounts:

1. Alice Flaherty (Harvard Medical school neurologist) gets episodes of hypergraphia following any grief incidences that have grave affect on her brain.
She has started her 4th book and is doing research to help explain how the muse comes and goes.

2. Mendez- He felt the unreasonable compulsion to write poetry even though the patient had no previous history of being a poet.

3. Patient who wrote everything backwards!

4. Patients writing same word over and over again but with differing calligraphy.

5. Patients' writing consists of sheer scribbling and frantic random thoughts.

Therefore on a lighter note, if you have the wrong brain defect but fall under the right category...then voilà...YOU shall be famous!

Shivani Mangalgi
Medicowesome 2017

Leucocoria

Leucocoria:

Also known as the white pupillary reflex, is an abnormal white reflection from the retina of the eye.
Pathologically it's the absence of the red reflex.

Clinically the pupils appear white rather than the usual black color.

Mnemonic for causes of leukocoria-

'CREAM PIGMENT'

C - Coats disease/ Coloboma/ Cataract
R - Retinoblastoma/ Retinal dysplasia/ ROP/ Retinal fold
E - Endophthalmitis
A - Astrocytic hamartoma/ Anisometropia
M - Myelinated retinal nerve fiber layer

P - Persistent fetal vasculature/ PHPV
I - Incontinentia pigmenti/ Inflammation (uveitis)
G - Granuloma
M - Melanoma/ Medulloepithelioma
E - Familial exudative vitreoretinopathy (FEVR)
N - Norrie
T - Trauma/ Toxocariasis

Go ahead and add more causes to make your own list!

Shivani Mangalgi
Medicowesome 2017

Post operative ileus ( mechanical obstruction vs paralytic )

Hey Awesomites

Under normal circumstances, bowel movements usually do not appear till 72 hours after a certain abdominal or non - abdominal surgery, with a characteristic pattern of initiation of small bowel movements within 24 hours, stomach within 48 and colonic ( proximal to distal ) within 72 hours after surgery.

The assessment of gastrointestinal recovery is done with consideration to certain factors like the time taken to ingestion of first solid food, and time to either bowel movements or the first flatus passed, whichever occurs later.

Prolonged post operative paralytic ileus means:
- No return of bowel movements ( on auscultation ) after 72 hours
- Absence of flatus or stool on day 6 after surgery
- Feeling of discomfort, nausea or vomiting on oral intake, thus requiring i.v. support, NG tube placement by PO day 5.
- Partial return of bowel movements after PO day 5.

On the other hand, post operative ileus due to mechanical obstruction, inspite of sharing many signs and symptoms, is an important differential to exclude. Most of the patients with PO mechanical obstruction in the bowel ( due to herniation, adhesions, stomas, masses, etc. ) have an initial return of bowel function that may be partial/ complete, and oral intake, after a physiological period of 72 hours post operatively.

It is then followed by intermittent episodes of nausea, feculent vomiting abdominal intense cramping pain and distension, that is often paroxysmal and rapidly progressing..

Also, patient with mechanical bowel obstruction after surgery may have other signs suggestive of ischemia of bowel loop distal to the obstruction, such as localised tenderness, fever, tachycardia, and peritoneal signs, which would mean immediate surgical intervention so as to prevent further complications !!
( Refer to UpToDate)

Thats all
Hope this helps :)

- Jaskunwar Singh

Wednesday, August 16, 2017

Causative microbes in acute osteomyelitis

Hello Awesomites!
Let's discuss some facts about Common microbes involved in Acute Osteomyelitis.

Staphylococcus aureus is the most common infecting organism found in older children and adults with osteomyelitis.

Gram negative bacteria - vertebral body infections in adults.

Pseudomonas - intravenous drug abusers.

Fungal osteomyelitis - chronically ill patients receiving long-term intravenous therapy or parenteral nutrition.

Salmonella osteomyelitis - Sickle cell hemoglobinopathies - tends to be diaphyseal.

Infants -S. aureus (most common),group B streptococcus & gram-negative coliforms .
Group B streptococcus - otherwise healthy infants 2 to 4 weeks of age.

Animal Bite - Pasteurella

Human Bite - Eikinella

That's all!
Thank you.

MD Mobarak Hussain (Maahii)

Tuesday, August 15, 2017

Mnemonico diagnostico : SLE revised 2012 diagnostic criteria

Hey Awesomites

SLICC classification criteria for Systemic Lupus Eryhtematosus mnemonic :

Paramedian pontine reticular formation and MLF

Hello :)

PPRF = Paramedian pontine reticular formation

MLF = Medial longitudinal fasciculus

-Upasana Y. :)

Ptosis in Horner's syndrome vs oculomotor nerve palsy

Hello :)

That's all.
- Upasana Y. :)

Third nerve palsy

Hello :)

Before starting with the III nerve, Let us understand the term.

According to TABER'S medical dictionary, We need to understand 3 main type of palsy here.

1.NUCLEAR palsy :- Paralysis caused by lesion of the nuclei in CNS.
2.OCULAR palsy :- Paralysis of extraocular nd intraocular muscles.
3.MUSCULAR palsy :- Loss of the capacity of muscle to contract. It may be due to structural or functional disorders
-in the muscle at the myoneural junction,
-in efferent nerve fibres,
-in the cell bodies of nuclei of origin of the brain or of the gray matter of the spinal cord,
-in conducting pathways of the brain or spinal cord,
-in motor centres of the brain.

Third cranial nerve supplies
1. EXTRAOCULAR MUSCLES
-Superior rectus
-Inferior oblique
-Medial rectus
-Inferior rectus

2.INTRAOCULAR MUSCLES
-Levator palpebral superioris
-Ciliary body
-Iris sphincter msucle

THE LOCALIZATION OF THIRD NERVE LESION
-Supranuclear
-Nuclear
-Fascicular
-Basilar
-Intra-Cavernous sinus
-Superior orbital fissure
-Intra Orbital part

CLINICAL FEATURES OF THIRD NERVE PALSY:-
1. Ptosis - paralysis of LPS muscle.
2. Deviation – out, down and intorted (unopposed action of LR and SO).
3. Ocular movements:
• Adduction – MR
• Elevation – SR and IO
• Depression – IR
• Extorsion – IR and IO
4. Pupil is fixed and dilated – paralysis of sphincter pupillae muscle.
5. Accommodation is completely lost – paralysis of ciliary muscle.
6. Crossed diplopia – paralytic divergent squint.
7. Head posture – If the pupillary area is uncovered, head takes a posture consistent with the directions of actions of the paralysed muscles, i.e., head is turned on the opposite side, tilted towards the same side and chin is slightly raised. (Pathways between vestibular nuclei and oculomotor nuclei. These are Intranuclear pathway.)

FEATURES AND CAUSES OF THIRD NERVE LESIONS AT VARIOUS LEVELS

1. Supranuclear lesions
• Lesions of the cerebral cortex and supranuclear pathway produce conjugate paresis which affect both eyes equally.
• In supranuclear lesions although position and movements of the eyes are abnormal, they maintain their relative co-ordination and produce no diplopia.

2. Nuclear lesions
• Lesions involving purely the third nerve nucleus are relatively uncommon.
• Common causes include ; vascular diseases, demyelination, primary tumors and metastasis
• Lesions involving entire nucleus cause
-an ipsilateral third nerve palsy with ipsilateral sparing and
-contralateral weakness of elevation.
• Lesions involving paired medial rectus subnuclei (ventromedial nucleus) cause a wall-eyed bilateral internuclear ophthalmoplegia ( WEBINO ) characterised by defective convergence and adduction.

3. Fascicular lesions

• Causes are similar to nuclear lesions.

-Benedikt syndrome involves the fasciculus as it passes through the red nucleus and is characterised by ipsilateral 3rd nerve palsy and contralateral extrapyramidal signs such as hemitremor.

-Weber syndrome involves the fasciculus as it passes through the cerebral peduncle and is characterised by ipsilateral 3rd nerve palsy and contralateral hemiparesis.

-Nothangel syndrome involves the fasciculus and the superior cerebellar peduncle and is characterised by ipsilateral 3rd nerve palsy and cerebellar ataxia.

-Claude syndrome is a combination of Benedikt and Nothangel syndromes.

4. Lesions involving basilar part of the nerve

• As the nerve runs in the subarachnoid space at the base of skull unaccompanied by any other cranial nerve, isolated third nerve palsies are frequently basilar.

• Causes :

1. Aneurysms at the posterior communicating artery cause isolated third nerve palsy with involvement of pupil.

2. Extradural hematomas which may cause tentorial pressure cone with downward herniation of the temporal lobe. This compresses the third nerve as it passes over the tentorial edge. Initially there occurs fixed, dilated pupil, which is followed by a total third nerve palsy.

3. Diabetes causes isolated 3rd nerve palsy with sparing of the pupillary reflexes.

5. Lesions involving intracavernous part of the nerve

• Because of its close proximity to other cranial nerves, intracavernous 3rd nerve palsies are usually associated with involvement of the 4th and 6th nerves, and the 1st division of trigeminal nerve.
-PULSATILE EXOPHTHALMOS can also be seen.

• In intracavernous 3rd nerve palsy, pupil is spared. Sometimes, pupil may be constricted owing to inv of sympathetics.

• Causes :

1. Diabetes may cause vascular palsy.

2. Pituitary apoplexy – may cause a third nerve palsy as a result of hemorrhagic infarction of a pituitary adenoma (after child birth), with lateral extension into cavernous sinus.

3. Intracavernous lesions – aneurysms, meningiomas, carotid-cavernous fistulae and Tolosa-Hunt syndrome (granulomatous inflammation).

6. Lesions of the intraorbital part of the nerve

• May cause isolated extraocular muscle palsies or may involve either superior division or inferior division or both.

• Causes : orbital tumors, pseudotumors, trauma and vascular diseases.

7. Lesions of pupillomotor fibres

• B/w the brainstem and the cavernous sinus, pupillomotor fibres are located superficially in the superior median quadrant of the nerve.

• They derive the blood supply from the pial blood vessels whereas the main trunk of the 3rd nerve is supplied by vasa nervorum.

I want to thank my teacher for such a beautiful explanation.
I hope it helped.
Do read about the following . (though I will write on this topic also)
1.Injury of Paramedian pontine reticular formation
2. Ptosis in Horner's syndrome and oculomotor nerve palsy.

-Upasana Y. :)

Drugs that can cause TOXIC MYOPATHIES

Hello :)

1. TYPE- Inflammatory

-Cimetidine
-D- Penicillamine
-Procainamide
-L-tryptophan
-Levodopa

2.TYPE- Non-Inflammatory necrotizing or vacuolar

-Alcohol
-Cholestrol lowering agents
-Chloroquine
-Colchicine
-Cyclosporine and tacrolimus
-Emetine
-Isoretinoic acid
-Vincristine
-Labetalol

3.TYPE -Rhabdomyolysis and myoglobinuria
-Alcohol
-Amphetamine
-Cocaine
-Heroin
-Phencyclidine
-Meperidine

4.TYPE -myosin loss

-Non depolarizing neuromuscular blocking agent
-steroid

That's all.
-Upasana Y. :)

Monday, August 14, 2017

ABC vs CAB for CPR

Hello :)

If someone ask the medical personnel, What is ABC ?
Unfailingly, the answer will be A-airway, B-breathing ,C-Circulation.

But now this has been changed to C-A-B.(I didn't know this)
C-Compression /circulation
A-airway
B-breathing

(SOURCE :- I took the following content from https://medictests.com/abc-vs-cab-correct/ )

In 2010 the AHA made a radical change to how we approach CPR. Up until then we all lived by the trusty "ABC" (Airway, Breathing, Circulation) method of resuscitation. Not surprisingly, though, the AHA's ongoing research began to show that compressions are the most important part of CPR and any delay or interruption resulted in worse outcomes. It was also discovered that during CPR, the patient's blood stays oxygenated for 4-6 minutes after their last breath. In response to this research, and in an attempt to simplify CPR for untrained laypeople, the AHA decided to switch our initial approach from ABC to CAB. While this change is medically sound, it has cause a lot of confusion for healthcare professionals who regularly use ABC for other scenarios. So, ABC vs CAB, which is correct?

With indisputable evidence that compressions are the most important part of CPR, it is no wonder that AHA has been dee-mphasizing airway and breathing. In fact, in ACLS, the AHA has gone as far as to suggest that endotracheal intubation may not be as important as we once thought. While it remains the ultimate airway, the AHA suggests BVM or supraglottic airway ventilations because they reduce the interruption of compressions.

In accordance with this paradigm shift, the AHA has changed ABC to CAB in the event of cardiac arrest. Unfortunately, though, some healthcare providers have incorrectly interpreted this change in cardiac arrest to be a change that applies to every other medical call. Some are under the impression that the AHA is the governing body over prehospital and emergency care, which is simply not the case. CAB is no doubt a revolution in cardiac arrest care but it is not meant to change the way we approach our "normal" patients.

Here is a short list of examples of when ABC vs CAB should be used

ABC

Overdose
Trauma
Altered mental status
Diabetic emergencies
Respiratory failure
Airway obstruction
Respiratory Distress
CAB

Cardiac Arrest

Conclusion:-

It does not have to be one or the other! While ABC has been phased out by the AHA, it still is the de facto initial assessment used in every non-cardiac arrest call. CAB, on the other hand, is now being used during cardiac arrest to remind practitioners and laypeople of the importance of compressions. In general, it is not useful to confine yourself to one ideology "because they say so." It is much more productive to understand each approach and use critical thinking to choose the best route for your patient.

That's all
-Upasana Y. :)

Saucerization and Arthrodesis

Hello :)

I was fascinated with this two terms :- Saucerization in Osteomyelitis and Arthrodesis (I studied it in treatment of foot drop).

SAUCERIZATION

-Extension of surgical debridement
-Debrided wounds left open widely through excision of overhanging soft tissue and bone
-Wounds drain freely (otherwise If we close it the pus will keep on collecting)
-Abscesses do not form
-Limited to areas where it causes acceptable loss of function e.g. Tibia and femur

Arthrodesis

The term arthrodesis refers to surgical fusion of a joint.
The indications for this are pain & instability in a joint and, in some situations, following the failure of joint replacement.

FIXATION POSITIONS
The optimum positions for arthrodesis in different joints are as follows:

1. SHOULDER:
-In such a position that the hand can comfortably reach the mouth.
-The person will be able to perform the day-to-day activity like eating.combing,scratching the back,cleaning.
-Arthrodesis of shoulder joint is usually reserved for a flail joint as may follow a brachial plexus injury.
-Stabilization of this joint may lead to improvement in the remaining distal function of the arm.

2. ELBOW: 90° of flexion.
(Suppose you won't be able to flex it 90 degree ,then what will happen? Try eating food with that position. You won't be able to do that without this.)

3. WRIST: A few degree of extension
4. THUMB:
-MCP joint in 20° of flexion.
-IP joint in slight flexion.
5.FINGERS:
MCP joints in 20° -30° of flexion.
(These joints are rarely fused).
Proximal IP joints in 40° -45° of flexion (less in middle & index fingers)

To show the importance of fixation

-Upasana Y. :)

Casts (Colle's Cast)

Hello :)

These days, I am attending orthopaedics posting. And I am loving it.
I saw casting. Following questions were asked to me during the procedure.

Q. Define Casts and Slabs.
A. Cast & slab are methods of a temporary immobilization for a wide variety of musculoskeletal conditions not only for disorders of bones but also for many other disorders related with tendons, muscles and soft tissues

Cast: are circumferential immobilizers which is surrounding the whole circumference of the limb
Slab: are non-circumferential immobilizers which is only support apart of the circumference of the limb.

Q. Define Traction and Splints.
A. TRACTION -Traction is a method of restoring alignment to a fracture through gradual neutralisation of muscular forces. Traction is applied to the limb distal to the fracture, so as to exert a continuous pull in the long axis of the bone.

SPLINT - A device used for support or immobilization of a limb or the spine. Any material used to support a fracture is known as splint.

Q. What is Colle's Fracture?
A. It is not just fracture lower end of radius but a fracture dislocation of the inferior radioulnar joint.

Q. Do you know anything regarding Colles Cast.
A. It is a type of Immobilization method. It is the Below elbow cast (10 – 20 degree palmar flexion, 15 – 20 degree ulnar deviation) .

So, Colle`s cast :- It is a below elbow cast in supination.

Ideally it has to meet the following 4 criteria :
-Firm fit at the dorsum
-Firm fit at the volar fracture apex
-Just snuggly fitting at the forearm
-Metacarpophalangeal joints should be free to move.

That's all for today.

-Upasana Y. :)

Pages

Friday, August 25, 2017

Thursday, August 24, 2017

Wednesday, August 23, 2017

Tuesday, August 22, 2017

Monday, August 21, 2017

Sunday, August 20, 2017

Saturday, August 19, 2017

Friday, August 18, 2017

Thursday, August 17, 2017

Wednesday, August 16, 2017

Tuesday, August 15, 2017

Monday, August 14, 2017