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Karnim Capsules - Everything You Need to Know
Karnim Capsules - Everything You Need to Know karnim cap 1,792 Views • 3 years ago

Karnim Capsules - Everything You Need to Know

How to Remove Teeth Plaque Naturally
How to Remove Teeth Plaque Naturally hooda 31,756 Views • 3 years ago

Watch that video to know How to Remove Teeth Plaque Naturally

Grade III Acne Draining and Removals
Grade III Acne Draining and Removals hooda 48,493 Views • 3 years ago

Watch that Grade III Acne Draining and Removals

Huge Splenectomy
Huge Splenectomy samer kareem 11,389 Views • 3 years ago

Splenectomy for massive splenomegaly (>1500 g) provides palliation but is associated with a high rate of perioperative complications in a population of patients with advanced hematological malignancies. Predictive factors for survival and whether the palliative goals are achieved in the long-term are not well defined.

Affordable Dental Veneers!
Affordable Dental Veneers! samer kareem 1,617 Views • 3 years ago

Syndrome of Inappropriate Antidiuretic Hormone SIADH
Syndrome of Inappropriate Antidiuretic Hormone SIADH samer kareem 2,437 Views • 3 years ago

In this condition, the body retains water instead of excreting it normally in urine. This process upsets the body's balance of minerals called electrolytes, especially sodium. Symptoms can vary depending on how rapidly the condition develops. In some cases, nausea and vomiting, headache, confusion, weakness, and fatigue may be experienced. Treatments include fluid restriction and, possibly, medications to adjust electrolyte balance. Underlying conditions also need treatment.

Cytomegalovirus in solid organ transplant recipients
Cytomegalovirus in solid organ transplant recipients samer kareem 1,524 Views • 3 years ago

Cytomegalovirus (CMV) continues to have a tremendous impact in solid organ transplantation despite remarkable advances in its diagnosis, prevention and treatment. It can affect allograft function and increase patient morbidity and mortality through a number of direct and indirect effects. Patients may develop asymptomatic viremia, CMV syndrome or tissue-invasive disease. Late-onset CMV disease continues to be a major problem in high-risk patients after completion of antiviral prophylaxis. Emerging data suggests that immunologic monitoring may be useful in predicting the risk of late onset CMV disease. There is now increasing interest in the development of an effective vaccine for prevention. Novel antiviral drugs with unique mechanisms of action and lesser toxicity are being developed. Viral load quantification is now undergoing standardization, and this will permit the generation of clinically relevant viral thresholds for the management of patients. This article provides a brief overview of the contemporary epidemiology, clinical presentation, diagnosis, prevention and treatment of CMV infection in solid organ transplant recipients.

Excision of a Moderate/Severe Dysplastic Nevus
Excision of a Moderate/Severe Dysplastic Nevus samer kareem 1,460 Views • 3 years ago

What do General Surgeons actually do? Why do they love their job?
What do General Surgeons actually do? Why do they love their job? samer kareem 3,115 Views • 3 years ago

Every day, specialists deliver high-quality care in 68 disciplines in health centres across Canada. Yet many Canadians know very little about what many specialists actually do, and the important role these disciplines play in Canada’s health care system.

Jaw Adjustment
Jaw Adjustment samer kareem 3,665 Views • 3 years ago

Procedure of DIALYSIS
Procedure of DIALYSIS Scott 100 Views • 3 years ago

#dialysis #hemodialysis #kidneys
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Things Nurses Should Know
Things Nurses Should Know nurse 110 Views • 3 years ago

Things nurses should know about their patients. As a new nurse, it can be hard trying to determine what information you need to know during your shift. In addition, nurses can get extremely busy and strapped for time, so how do you keep up with all of the things you need to know?

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In this video, Nurse Sarah explains some of the most important things nurses need to know about their patients. However, these things can vary depending on your specialty and patient population. These tips are designed to help new nurses begin to think like a nurse.

Some examples of thing nurses should know about their patients include their allergies, code status, diagnosis, medications, vital signs, and much more.

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Dropping the Needle Tip: Clinical Skills SHORT | @LevelUpRN
Dropping the Needle Tip: Clinical Skills SHORT | @LevelUpRN nurse 98 Views • 3 years ago

Ellis demonstrates the need to drop the tip of the needle when withdrawing medication from a vial.

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Two port laparoscopic Cholecystectomy
Two port laparoscopic Cholecystectomy DrPhil 28,618 Views • 3 years ago

A video showing Two port laparoscopic Cholecystectomy

Cervical Spine Exam
Cervical Spine Exam DrPhil 17,681 Views • 3 years ago

Examination of the cervical spines

First Trimester Scan (UltraSound)
First Trimester Scan (UltraSound) DrHouse 15,682 Views • 3 years ago

An U/S showing first trimesteric scan

Chalazion Eye Surgery
Chalazion Eye Surgery Mohamed 23,221 Views • 3 years ago

Surgical removal of a Chalazion from the eye lid

Cornual Ectopic Pregnancy
Cornual Ectopic Pregnancy Scott 20,811 Views • 3 years ago

Laparoscopic excision of a 6cm Cornual Ectopic Pregnancy that failed initial MTX treatment.

Sinusitis Pathology (Para-nasal Sinus Anatomy)
Sinusitis Pathology (Para-nasal Sinus Anatomy) Scott 17,788 Views • 3 years ago

Sinusitis Pathology (Para-nasal Sinus Anatomy)

From axons to tracts
From axons to tracts Mohamed 21,098 Views • 3 years ago

The complex circuitry interconnecting different areas in the brain, known collectively as white matter, is composed of millions of axons organized into fascicles and bundles. Upon macroscopic examination of sections of the brain, it is difficult to discern the orientation of the fibers. The same is true for conventional imaging modalities. However, recent advancements in magnetic resonance imaging (MRI) make such task possible in a live subject. By sensitizing an otherwise typical MRI sequence to the diffusion of water molecules it is possible to measure their diffusion coefficient in a given direction1. Normally, the axonal membrane and myelin sheaths pose barriers to the movement of water molecules and, thus, they diffuse preferentially along the axon2. Therefore, the direction of white matter bundles can be elucidated by determining the principal diffusivity of water. The three-dimensional representation of the diffusion coefficient can be given by a tensor and its mathematical decomposition provides the direction of the tracts3; this MRI technique is known as diffusion tensor imaging (DTI). By connecting the information acquired with DTI, three-dimensional depictions of white matter fascicles are obtained4. The virtual dissection of white matter bundles is rapidly becoming a valuable tool in clinical research.

Our journey begins with a transverse section of tightly packed axons as seen through light microscopy. Although represented as a two-dimensional "slice", we see that these axons in fact resemble tubes. A simulation of water molecules diffusing randomly inside the axons demonstrates how the membranes and myelin hinder their movement across them and shows the preferred diffusion direction --along the axons. The tracts depicted through DTI slowly blend in and we ride along with them. As we zoom out even more, we realize that it is a portion of the corpus callosum connecting the two sides of the brain we were traveling on and the great difference in relative scale of the individual axons becomes evident. The surface of the brain is then shown, as well as the rest of the white matter bundles--a big, apparently chaotic tangle of wires. Finally, the skin covers the brain.

With the exception of the simulated water molecules, all the data presented in the animation is obtained through microscopy and MRI. Computer algorithms for the extraction of the cerebral structures and a custom-built graphics engine make our journey through the brain's anatomy possible in a living person.

Micrograph courtesy of Dr. Christian Beaulieu, University of Alberta.
Music by Mario Mattioli.

References:
1. Stejskal, E.O., et al., J. Chem. Phys., 1965. 42:
2. Beaulieu, C., NMR Biomed., 2002. 15:435-55.
3. Basser, P.J., et al., J. Magn. Reson. B, 1994. 103:247-54.
4. Mori, S., et al., NMR Biomed., 2002. 15:468-80.

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