Dr. Ravishankar Kumar

Dr. Ravishankar Kumar a Medical doctor who graduated in 2017 and I graduated my studies in India. I like sharing medical education.I hope you like my page.

Contents are not copyrighted. Contact: ravishankarkumarsingh0@gmail.com Hii friends welcome to Our Channel Dr. Ravishankar Kumar. I am Dr. Ravishankar Kumar from G.D.M.H. MEDICAL COLLEGE & HOSPITAL PATNA BIHAR (INDIA). I am here to provide you an ample of medical study material. On this channel I will provide you all the material concerning the medical students. The topics will be explained easily in Hindi as well as in English. Also I will be there to clear all your queries drop your comments in the comment box. I'll be very happy to respond those quarries. Please like, share and subscribe channel. For business enquiry - Ravishankarkumarsingh0@gmail.com
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Ravishankar Kumar

You press the patient's shin. The indentation stays. What does that tell you about the composition of the interstitial f...
25/02/2026

You press the patient's shin. The indentation stays. What does that tell you about the composition of the interstitial fluid? πŸ‘‡

Pitting: The classic "doughy" feel. Fluid is displaced because it is low-protein (transudate). Gravity acts on it, pulling it down to the ankles during the day.

Non-Pitting: The skin feels firm, woody, or rubbery. The fluid is protein-rich or trapped within a matrix of fibrous tissue/mucopolysaccharides. It resists displacement.

🧠 USMLE Board Review Notes:

πŸ”Ή Pitting Edema (The Starling Force Imbalance):
Usually driven by Hydrostatic or Oncotic pressure changes.

⬆️ Hydrostatic Pressure: Heart Failure (Right-sided), Venous Insufficiency.

⬇️ Oncotic Pressure: Nephrotic Syndrome (losing albumin), Cirrhosis (not making albumin), Malnutrition (Kwashiorkor).

Key Feature: It is often bilateral (systemic cause) and improves with elevation (unless it's DVT - unilateral!).

πŸ”Ή Non-Pitting Edema (The Structural Issue):
This is about blockage or deposition.

Lymphedema: Disruption of lymphatic drainage (e.g., Post-mastectomy, Radiation, or Wuchereria bancrofti infection). The high protein content causes fibrosis and "Peau d'orange" skin texture.

Myxedema (Hypothyroidism): Deposition of Glycosaminoglycans (GAGs) / Hyaluronic acid in the dermis. This binds water, creating a gel-like swelling that doesn't pit.

πŸ’‘ Clinical Pearl:
Don't confuse general Myxedema (Hypothyroid) with Pretibial Myxedema.

Hypothyroidism = Generalized non-pitting edema (puffy face/periorbital).

Graves' Disease (Hyperthyroid) = Localized Pretibial Myxedema (shins only).

πŸ‘‡ Pop Quiz:
A patient presents with unilateral non-pitting edema of the leg and a positive Stemmer’s Sign (inability to pinch the skin fold at the base of the second toe). What is the diagnosis?
(A) Deep Vein Thrombosis
(B) Lymphedema
(C) Cellulitis
(D) Congestive Heart Failure
Dr. Ravishankar Kumar

Big shout out to my newest top fans! πŸ’Ž Sunny Harun, Abubakar Sadik Muhammad, Sharmistha Roy, ابو سعيد, Lavine Dron, Nge ...
25/02/2026

Big shout out to my newest top fans! πŸ’Ž Sunny Harun, Abubakar Sadik Muhammad, Sharmistha Roy, ابو سعيد, Lavine Dron, Nge Ngoma, KΓ»ttΓΏ ΓƒngΓͺl, Rohit Kumar, Divya Kumari, Pherteemerh IB, Jeetendra Prasad, Rahul Raj, Purushottam Singh, Adebayo Imole, Priya Kumari, Purushottam Singh, Aj Ajay, Reuboka Retsepile, Grace Douglas, Anish Kumar, Ghania Singh, Gautam Kumar, Yahaya Ayuba, Hussaini Ibrahim, Timothy David, ጡሡጒሡ αŠ αˆ‹αŒ²αˆ΅ αŠ αŒ‹αŒ²αˆ΅, Shahzad Ahmad, Kennasaa Qalbeessaa, Nwodo Chukwunonso Samuel

Drop a comment to welcome them to our community,

βœ… A parasite is an organism that lives in, on, or with another living organism (the host) to obtain nutrients, food, or ...
24/02/2026

βœ… A parasite is an organism that lives in, on, or with another living organism (the host) to obtain nutrients, food, or shelter, usually harming the host in the process.

βœ… Parasites, such as worms or bacteria, are essential for their survival and often cause diseases in humans, animals, or plants.
Dr. Ravishankar Kumar

🟣 Cranial Nerves I–XII: Short Notes🟣 Core Overview➟ Cranial nerves are 12 pairs arising from the brain/brainstem➟ Classi...
23/02/2026

🟣 Cranial Nerves I–XII: Short Notes

🟣 Core Overview
➟ Cranial nerves are 12 pairs arising from the brain/brainstem
➟ Classified as Sensory, Motor, or Both
➟ Essential for neurological localization in exams and clinics

🟣 Pure Sensory Cranial Nerves
➟ CN I – Olfactory
β†’ Smell
β†’ Lesion: anosmia

➟ CN II – Optic
β†’ Vision (visual acuity & visual fields)
β†’ Lesion: visual field defects

➟ CN VIII – Vestibulocochlear
β†’ Hearing & balance
β†’ Lesion: hearing loss, vertigo

🟣 Pure Motor Cranial Nerves
➟ CN III – Oculomotor
β†’ Most eye movements, eyelid elevation, pupillary constriction
β†’ Lesion: ptosis, β€œdown & out” eye, dilated pupil

➟ CN IV – Trochlear
β†’ Superior oblique muscle (downward & inward gaze)
β†’ Lesion: difficulty looking down (stairs)

➟ CN VI – Abducens
β†’ Lateral re**us muscle (eye abduction)
β†’ Lesion: medial deviation of eye

➟ CN XI – Accessory
β†’ Sternocleidomastoid & trapezius
β†’ Lesion: weak head rotation, shoulder droop

➟ CN XII – Hypoglossal
β†’ Tongue movement
β†’ Lesion: tongue deviates toward side of lesion

🟣 Mixed (Sensory + Motor) Cranial Nerves
➟ CN V – Trigeminal
β†’ Facial sensation (V1, V2, V3)
β†’ Muscles of mastication

➟ CN VII – Facial
β†’ Facial expression
β†’ Taste (anterior 2/3 of tongue)
β†’ Lacrimation & salivation
β†’ Lesion: Bell palsy

➟ CN IX – Glossopharyngeal
β†’ Taste (posterior 1/3 of tongue)
β†’ Swallowing, carotid body & sinus

➟ CN X – Vagus
β†’ Parasympathetic control of heart, lungs, GI tract
β†’ Voice & swallowing
β†’ Lesion: hoarseness, uvula deviation away from lesion

🟣 USMLE Exam Pearls
➟ Motor CN lesions β†’ ipsilateral weakness
➟ Optic chiasm lesion β†’ bitemporal hemianopia
➟ Tongue deviation toward lesion = hypoglossal nerve damage
➟ Facial droop + forehead involvement = LMN facial nerve lesion
Dr. Ravishankar Kumar

23/02/2026

Common Skin Diseases

What Happens When Stool Gets Stuck Inside Your Intestine?Comment below πŸ‘‡ Dr. Ravishankar Kumar
23/02/2026

What Happens When Stool Gets Stuck Inside Your Intestine?
Comment below πŸ‘‡
Dr. Ravishankar Kumar

Vaginal infectionsπŸ¦ πŸš‘A vaginal infection (vaginitis) involves itching, odor, and unusual discharge (yeast, bacterial, STI...
22/02/2026

Vaginal infectionsπŸ¦ πŸš‘

A vaginal infection (vaginitis) involves itching, odor, and unusual discharge (yeast, bacterial, STIs), often from fungal overgrowth (yeast), bacterial imbalance (BV), or STIs, triggered by antibiotics, hygiene, or hormonal changes. Diagnosis requires a doctor's visit for proper treatment, which varies by cause but includes antifungals, antibiotics, or antivirals, with prevention focusing on hygiene, breathable clothing, and managing underlying conditions like diabetes.

πŸ‘‰Follow me for more information... Dr. Ravishankar Kumar

❇️ Peripheral IV Therapy: Common Complications & Clinical SignsPeripheral intravenous (IV) therapy is one of the most fr...
21/02/2026

❇️ Peripheral IV Therapy: Common Complications & Clinical Signs

Peripheral intravenous (IV) therapy is one of the most frequently performed clinical procedures, yet it carries well-recognized risks when complications are not identified early. This infographic highlights the most common peripheral IV complications, their key clinical signs, and important safety distinctions to support timely assessment and intervention.

⬇️ Included complications:

IV Site Infection – local or systemic infection related to catheter use

Phlebitis – inflammation of the vein due to mechanical, chemical, or infectious causes

Infiltration – leakage of non-vesicant IV fluids into surrounding tissue

Extravasation – leakage of vesicant or irritant medications causing tissue injury

Hematoma – blood leakage into tissue following vessel trauma

Air Embolism (Rare) – entry of a clinically significant volume of air, most often associated with central venous access

Early recognition of changes such as pain, swelling, erythema, temperature differences, infusion flow changes, or systemic symptoms is essential to prevent progression to serious complications, including tissue damage or infection.

(This content is intended to support clinical learning and should be used alongside current institutional policies and evidence-based guidelines.)
Dr. Ravishankar Kumar

Gabapentin side-effects points to Remember βœ…Dr. Ravishankar Kumar
21/02/2026

Gabapentin side-effects points to Remember βœ…
Dr. Ravishankar Kumar

Oligomenorrhea points to Remember βœ…Dr. Ravishankar Kumar
20/02/2026

Oligomenorrhea points to Remember βœ…
Dr. Ravishankar Kumar

Eclampsia vs Preeclampsia βœ…Dr. Ravishankar Kumar
18/02/2026

Eclampsia vs Preeclampsia βœ…
Dr. Ravishankar Kumar

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