Top videos

samer kareem
7,010 Views · 8 months ago

Most folks remember puberty – and not always in a good way. It can be an awkward stage of budding breasts, unwanted hair, acne and unexpected body odor. Puberty, when a child undergoes physical changes and becomes sexually mature, typically begins around age 8 in girls and age 9 in boys. But imagine, say, a 6- or 7-year-old undergoing such changes? Studies are showing that the onset of puberty for both boys and girls is occurring earlier and earlier, a phenomenon defined as precocious puberty. A study published in Pediatrics in 2010 found that among a population of 1,200 American girls, about 23 percent of African-Americans,15 percent of Latinas and 10 percent of Caucasian girls had begun puberty (marked by breast development) at age 7. In 2012, another study published in Pediatrics found that puberty in American boys – measured by testicular enlargement and pubic hair growth – was beginning six months to two years earlier than what research in previous decades had documented, particularly among African-American children.

Alicia Berger
7,008 Views · 8 months ago

Ocular Movement Examination

samer kareem
7,002 Views · 8 months ago

Meningococcal meningitis - causes, features, symptoms and treatment

samer kareem
7,000 Views · 8 months ago

There are a number of different causes of vertigo. Vertigo can be defined based upon whether the cause is peripheral or central. Central causes of vertigo arise in the brain or spinal cord while peripheral vertigo is due to a problem within the inner ear. The inner ear can become inflamed because of illness, or small crystals or stones found normally within the inner ear can become displaced and cause irritation to the small hair cells within the semicircular canals, leading to vertigo. This is known as benign paroxysmal positional vertigo (BPPV).

samer kareem
6,994 Views · 8 months ago

Pelvic ureter. The ureter enters the pelvis, where it crosses anteriorly to the iliac vessels, which usually occurs at the bifurcation of the common iliac artery into the internal and external iliac arteries. Here, the ureters are within 5 cm of one another before they diverge laterally.

Anatomy_Videos
6,994 Views · 8 months ago

Anatomy of The Abdominal Autonomic Nerve Supply

samer kareem
6,991 Views · 8 months ago

External cephalic version is a process by which a breech baby can sometimes be turned from buttocks or foot first to head first. External cephalic version (ECV) is a manual procedure that is advocated by national guidelines for breech presentation singleton pregnancy, in order to enable vaginal delivery.

Scott
6,989 Views · 8 months ago

Phacolytic glaucoma usually is associated with a mature or hypermature cataract and typically occurs in elderly patients. Today, phacolytic glaucoma is rare in the United States, found primarily in areas where access to care is poor. Will the increase in the number of under- and uninsured patients lead to an increase in this condition? Evaluation and Diagnosis Signs and symptoms. Patients typically report acute-onset pain, decreased vision, tearing and photophobia. Examination will reveal injection, corneal edema, elevated IOP, anterior chamber reaction with or without pseudohypopyon, particles on the lens capsule and anterior capsule wrinkling. Patient history. The duration of symptoms should be elicited; a delayed presentation of more than five days since onset can result in glaucomatous disc damage and poorer prognosis.¹ The ocular history may reveal that the patient decided against removal of an advanced cataract. Prior intraocular surgery or trauma may have left residual lens material that could cause phacoanaphylactic glaucoma or exacerbate infectious endophthalmitis. Visual acuity and visual potential should be assessed. Exam essentials. A complete ophthalmologic examination should be done. The eye should be inflamed, and the cornea may be edematous due to the high IOP. The anterior chamber will demonstrate massive inflammation and/ or pseudohypopyon. Gonioscopy is essential; it will help rule out angle closure due to phacomorphic glaucoma or neovascularization of the angle. Assess ment of the posterior pole should be performed to rule out vitreous hemorrhage (which can result in ghost-cell glaucoma) or vitritis (which may be associated with infectious endophthalmitis or panuveitis). If the view to the fundus is obstructed, B-scan ultrasonography also should be performed. Differential diagnosis. The differential diagnosis includes infectious endophthalmitis, phacoanaphylactic glaucoma, inflammatory glaucoma, glaucoma secondary to intraocular tumor, phacomorphic glaucoma, acute-angle closure glaucoma and neovascular glaucoma. Management Medication. Medical management is used to temporarily control the glaucoma and inflammation. Initial treatment consists of hyperosmotic agents, aqueous suppressants, anti-inflammatory drugs and cycloplegics. Surgery. Definitive treatment is removal of the lens via extracapsular cataract extraction with or without an IOL. Some ophthalmologists defer placement of an IOL until after the inflammation subsides; however, there is no significant difference in final visual acuity between those patients who did receive an IOL and those who did not.¹ If the phacolytic glaucoma is of long duration (more than seven days), a combined trabeculectomy may be needed to prevent postoperative IOP spikes.² In eyes with hypermature Morgagnian cataracts, one must be especially careful, as the capsule is fragile, the zonules are weak and the view is difficult due to the white, milky cortex. Vision limited to light perception on presentation is not a contraindication to performing cataract extraction. Surgical Tips For a planned extracapsular cataract extraction with a posterior chamber IOL, fashion a superior fornix-based conjunctival flap.³ Make a partial-thickness incision along the sclerolimbal junction superiorly for 120 degrees with a No. 69 blade. Forty-five degrees away, a paracentesis should be done to decompress the eye. The anterior chamber fluid can be withdrawn for analysis, to look for macrophages and high molecular-weight proteins. Inject balanced salt solution in a cannula to wash out any residual particulate matter, then inject Healon or viscoelastic into the anterior chamber. Make an incision entering the anterior chamber at the 12 o’clock position with a keratome. A 26-gauge cystotome mounted on a syringe is then introduced through the 12 o’clock incision and used to puncture the capsular bag. The milky cortex should be aspirated as much as possible, until the nucleus is visible. Withdraw the needle through the keratome incision, then inject Healon through the 12 o’clock incision into the capsular bag. Next, enlarge the corneoscleral keratome incision with curved Westcott scissors to 120 degrees. Perform a partial V-shaped capsulotomy; this can be done either with the cystotome or with an angled Vannas scissors. Place viscoelastic under the nucleus to float the nucleus and sever any adhesions between the nucleus and the capsule. The nuclear portion of the lens can then be removed with an irrigating vectis (lens loop) with or without gentle pressure at the inferior limbus (6 o’clock). Irrigate and aspirate the residual cortex with the Simcoe cannula. Inspect the capsular bag; if it is intact, place a posterior chamber IOL into the bag. Close the incision with several interrupted 10-0 monofilament nylon sutures and reattach the conjunctival flap. Potential Sequelae and Prognosis Postoperatively, the patient should be managed with topical steroids and/or aqueous suppressants and hyperosmotics if necessary. Vitreous opacification behind the posterior capsule occurs in a small percentage of eyes. These vitreous opacities are typically absorbed by one to two weeks postoperatively. IOP usually is controlled without antiglaucoma medications after the cataract removal. A detailed glaucoma evaluation (including repeat gonioscopy to assess for peripheral anterior synechiae, visual field and optic nerve status) should be done to assess the extent of glaucomatous damage. The prognosis is dependent on the duration of elevated IOP, PAS and optic nerve damage. In one study, patients who were older than 60 and whose glaucoma was present for more than five days did significantly worse than a comparison group of younger individuals with shorter disease duration.

samer kareem
6,989 Views · 8 months ago

plastic surgeon demonstrates the results of a muscle separation(rectus diastasis) repair using 3 dimesional CAT scan and photographic images

usmle tutoring
6,985 Views · 8 months ago

USMLE Step 2 CS - Common Tips This is just preview video. To get full access please visit our website : www.usmletutoring.com

Medical_Videos
6,983 Views · 8 months ago

Preventing Hemodialysis Catheters Problems

samer kareem
6,982 Views · 8 months ago

The deep veins play a significant role in propelling blood toward the heart. The one-way valves in deep veins prevent blood from flowing backward, and the muscles surrounding the deep veins compress them, helping force the blood toward the heart, just as squeezing a toothpaste tube ejects toothpaste.

samer kareem
6,976 Views · 8 months ago

Device that keeps a donor heart beating

samer kareem
6,973 Views · 8 months ago

Anytime you're having unprotected sex, there's always a chance that a woman can get pregnant. Pregnancy requires sperm and egg to meet up together so a woman needs to be during her most fertile time of the month, which is usually 6 days out of the month; 5 days leading up to ovulation and on the day of ovulation. For most women, ovulation happens 12-16 days before her period's going to start. So a woman is usually most fertile for a week to a week and a half after her period has ended generally speaking, if you don't want to count each and every single day. So if you have unprotected intercourse during this time, then there's a high probability that a woman can get pregnant. Now, you mentioned that your girlfriend is supposed to start her period in about five days or so. If you've had intercourse any time leading up to this, there's always a chance that she could get pregnant. But as for the mechanics of it all, in order to get pregnant, semen needs to be inserted inside the vaginal canal where the egg and sperm can then meet. So if that did not happen, then the chances of her getting pregnant are slim. But if that has happened, the chances of her getting pregnant are great. So it would be best for you and her to just wait until her period is supposed to start and if she's late, then take an over-the-counter pregnancy test and if it's positive, congratulations to both of you! If it's negative and she still doesn't start her period, then tell her to wait about 5-7 days. Take another test and then maybe at that point, it will be positive if she is indeed pregnant. If she continues to not have a period or she's concerned about anything, it would be best for her to follow up with her doctor and they can decide if further investigation or treatment is warranted. If you have any other questions for me, feel free to ask them on our Facebook page at facebook.com/intermountainmoms and recommend us to your friends and family, too.

samer kareem
6,965 Views · 8 months ago

Learn the SIRS Criteria and how to calculate it. Greater than or equal to 2 or more of the following: Temperature Fever of greater than 38°C (100.4°F) or Less than 36°C (96.8°F) Heart Rate Greater than 90 beats per minute Respiratory Rate Greater than 20 breaths per minute or PaCO2 of less than 32mm Hg White Blood Cell Count Greater than 12,000cells/mm³ or Less than 4,000cells/mm³ or Greater than 10% Bands

samer kareem
6,961 Views · 8 months ago

Blood type (or blood group) is determined, in part, by the ABO blood group antigens present on red blood cells. A blood type (also called a blood group) is a classification of blood based on the presence or absence of inherited antigenic substances on the surface of red blood cells (RBCs).

Scott
6,956 Views · 8 months ago

Carotid Endartrectomy, large atheroma removed completely, patient well after surgery.

samer kareem
6,951 Views · 8 months ago

Encephalopathy means disorder or disease of the brain. In modern usage, encephalopathy does not refer to a single disease, but rather to a syndrome of global brain dysfunction; this syndrome can have many different organic and inorganic causes.

Scott
6,948 Views · 8 months ago

Hemorrhoids repair: Disposable hemorrhoidal stapler

Medical_Videos
6,938 Views · 8 months ago

Head Eye and ENT Physical Examination




Showing 185 out of 186