Top videos

Endoscopic Dacryocystorhinostomy
Endoscopic Dacryocystorhinostomy samer kareem 7,158 Views • 3 years ago

Dacryocystorhinostomy (DCR) is a procedure performed for the treatment of tearing (epiphora) due to blockage of the nasolacrimal duct. Tears originate in the lacrimal gland, located at the upper outer margin of the eye. As tears cross the eye with each blink, they are directed into small openings in the eyelids called puncta. From this point, tears travel through a pathway known as the canalicular system into the lacrimal sac. The lacrimal sac is located between the eye and the nose, and funnels tears into the nasal cavity through the nasolacrimal duct (Figure 1). As this is quite a long path for tears to travel, there can be many causes of excessive tearing. Blockage of the nasolacrimal duct is one common cause, and can be treated by creating a direct opening from the lacrimal sac into the nasal cavity in a procedure known as DCR. The evaluation and management of tearing may involve both an ophthalmologist and an otolaryngologist.

Mini-invasive surgical repair of a ruptured Achilles tendon
Mini-invasive surgical repair of a ruptured Achilles tendon samer kareem 61,182 Views • 3 years ago

Mini-invasive surgical repair of a ruptured Achilles tendon

Menstrual cycle
Menstrual cycle samer kareem 22,968 Views • 3 years ago

The menstrual cycle is the regular natural change that occurs in the female reproductive system like the uterus and ovaries that make pregnancy possible. The cycle is required for the production of ovocytes, and for the preparation of the uterus for pregnancy.

Kyphosis
Kyphosis samer kareem 7,668 Views • 3 years ago

Kyphosis, also known as a round back or hunchback, is a condition in which the spine in the upper back has an excessive curvature. The upper back, or thoracic region of the spine, is supposed to have a slight natural curve.

How Do Your Lungs Work?
How Do Your Lungs Work? samer kareem 15,984 Views • 3 years ago

The lungs and respiratory system allow oxygen in the air to be taken into the body, while also enabling the body to get rid of carbon dioxide in the air breathed out. Respiration is the term for the exchange of oxygen from the environment for carbon dioxide from the body's cells.

Macular translocation
Macular translocation samer kareem 9,878 Views • 3 years ago

The fovea was moved 425 to 1,700 microm (965+/-262 microm) superiorly or inferiorly. Follow-up time was 2 to 12 months (median 8 months). Complications included macular pucker (3 eyes), subfoveal hemorrhage (2 eyes), macular hole (1 eye), and progression of cataract in phakic eyes (3 eyes). Thirteen of 20 eyes showed various degrees of proliferative vitreoretinopathy with epiretinal membrane formation over the inferior peripheral retina with the inferior retinal detachment stabilized by the silicone oil. One eye progressed to phthisis bulbi. Initial visual acuity ranged from 20/80 to 20/800 (median 20/150) and final visual acuity ranged from light perception to 20/200 (median 20/1000).

Nephron
Nephron samer kareem 25,586 Views • 3 years ago

A nephron (from Greek νεφρός (nephros) meaning "kidney") is the basic structural and functional unit of the kidney. Its chief function is to regulate the concentration of water and soluble substances like sodium salts by filtering the blood, reabsorbing what is needed and excreting the rest as urine.

How to Grow a New Fingertip
How to Grow a New Fingertip samer kareem 1,481 Views • 3 years ago

How to Grow a New Fingertip

Home Care Now and in the Future
Home Care Now and in the Future johan simons 1,297 Views • 3 years ago

Home Care Now and in the Future - https://torontohomehealthcare.ca/canadians-who-require-home-care-now-and-in-the-future/

Meet Toby born premature at 24 weeks.
Meet Toby born premature at 24 weeks. samer kareem 4,864 Views • 3 years ago

Meet Toby, the baby who was born premature at 24 weeks. He may be small, but he's definitely a fighter! Share his story

ATHLETIC WOMAN GETS FULL ASMR BODY ADJUSTMENT
ATHLETIC WOMAN GETS FULL ASMR BODY ADJUSTMENT samer kareem 1,494 Views • 3 years ago

Youngest Face Transplant Recipient in U.S. | National Geographic
Youngest Face Transplant Recipient in U.S. | National Geographic Scott 81 Views • 3 years ago

Follow one family's journey through the agony of waiting for a donor, a 31-hour surgery, and the prospect of a long road to recovery.
➡ Watch the full documentary here: https://youtu.be/fFua9-Rc4pw
➡ Access our digital archive by becoming a member of National Geographic: https://on.natgeo.com/39wAStK

#NationalGeographic #KatieStubblefield #FaceTransplant

About National Geographic:
National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible.

Get More National Geographic:
Official Site: http://bit.ly/NatGeoOfficialSite
Facebook: http://bit.ly/FBNatGeo
Twitter: http://bit.ly/NatGeoTwitter
Instagram: http://bit.ly/NatGeoInsta
TikTok: http://www.tiktok.com/@natgeo
Tenor: http://on.natgeo.com/31b3Koc

To learn more, please read on here:
https://on.natgeo.com/2vQE1SO

Youngest Face Transplant Recipient in U.S. | National Geographic https://youtu.be/quU9s7I1NLI

National Geographic
https://www.youtube.com/natgeo

Scaphoid Hand Fracture Management
Scaphoid Hand Fracture Management samer kareem 1,443 Views • 3 years ago

An animation for Acumed demonstrating their new line of screws for fixing fractures. This one is focused on a Scaphoid fracture in the hand.

Removal and Replacement with Breast Capsulectomy
Removal and Replacement with Breast Capsulectomy samer kareem 4,194 Views • 3 years ago

Removal and Replacement with Breast Capsulectomy

ANTI ANGINAL DRUGS
ANTI ANGINAL DRUGS samer kareem 7,236 Views • 3 years ago

Angina results from a reduction in the oxygen supply/demand ratio. Therefore, in order to alleviate the pain, it is necessary to improve this ratio. This can be done either by increasing blood flow (which increases oxygen delivery or supply), or by decreasing oxygen demand (i.e., by decreasing myocardial oxygen consumption).

Trichinellosis
Trichinellosis samer kareem 5,528 Views • 3 years ago

Trichinosis (trik-ih-NO-sis), sometimes called trichinellosis (trik-ih-nuh-LOW-sis), is a type of roundworm infection. Roundworm parasites use a host body to live and reproduce. Occurring primarily among meat-eating animals (carnivores) — especially bears, foxes and walruses — the infection is acquired by eating roundworm larvae in raw or undercooked meat. When humans eat undercooked meat containing trichinella larvae, the larvae mature into adult worms in the intestine over several weeks. The adult worms then produce larvae that travel through various tissues, including muscle. Trichinosis is most widespread in rural areas throughout the world. Trichinosis can be treated with medication, though it's not always necessary. It's also easy to prevent.

HIV Testing for Infants
HIV Testing for Infants samer kareem 4,301 Views • 3 years ago

Diagnosis of HIV infection in infants is aided by HIV culture or DNA/RNA polymerase chain reaction (PCR); positive results are confirmed by repeating the test. In suspected cases, HIV testing should occur in the newborn period (ie, before the infant is 48 h old), at age 1-2 months, and again at age 3-6 months.

Levels of Spinal Cord Injury
Levels of Spinal Cord Injury samer kareem 1,876 Views • 3 years ago

High-Cervical Nerves (C1 – C4) Most severe of the spinal cord injury levels Paralysis in arms, hands, trunk and legs Patient may not be able to breathe on his or her own, cough, or control bowel or bladder movements. Ability to speak is sometimes impaired or reduced. When all four limbs are affected, this is called tetraplegia or quadriplegia. Requires complete assistance with activities of daily living, such as eating, dressing, bathing, and getting in or out of bed May be able to use powered wheelchairs with special controls to move around on their own Will not be able to drive a car on their own Requires 24-hour-a-day personal care

Stem Cell Injection Treatment
Stem Cell Injection Treatment samer kareem 5,776 Views • 3 years ago

Stem Cell Injection Treatment - Stem Cell Therapy

Biliary Atresia
Biliary Atresia samer kareem 1,440 Views • 3 years ago

Biliary atresia is a rare disease of the liver and bile ducts that occurs in infants. Symptoms of the disease appear or develop about two to eight weeks after birth. Cells within the liver produce liquid called bile. Bile helps to digest fat.

Showing 240 out of 373