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Hypoglycaemia: causes, features and management
Hypoglycaemia: causes, features and management samer kareem 963 Views • 2 years ago

Hypoglycemia is a common and serious medical emergency which may occur in both daibetic and non-diabetic patients. The signs and symptoms of hypoglycaemia may be present in many individuals, but may also be masked in several individuals due to a condition called hypoglycaemia induced autonomic failure. This presentation aims to deal with the causes, clinical features, diagnosis and management of various causes of hypoglycaemia. The causes of hypoglycaemia may be divided into hypoglycaemia in ill or medicated individuals and hypoglycaemia in previously asymptomatic individuals. A variety of causes are discussed under both headings. Management of hypoglycaemia is also discussed in detail. There is also a brief discussion about management of insulinoma.

LASIK or PRK? Which is right for me? Animation.
LASIK or PRK? Which is right for me? Animation. Mohamed Ibrahim 80 Views • 2 years ago

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Perfect for patient education purposes.
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LASIK, or "laser-assisted in situ keratomileusis," is the most commonly performed laser eye surgery to treat myopia, hyperopia and astigmatism. The goal of the treatment is to reshape the cornea to correct the refractive error of the eye.
The cornea is the transparent dome-shaped structure in front of the eye. The cornea refracts light and accounts for about two-thirds of the eye's total optical power. Altering the curvature of the cornea changes the way light rays enter the eye. As a result, the light rays can be focused properly onto the retina for clearer vision.
For nearsighted people, the laser is used to flatten the cornea. For farsighted people, the cornea is made steeper. For patients with astigmatism, the laser is used to smooth the irregularly-shaped cornea into a more regular shape.
The outer layer of the cornea - the epithelium – is capable of replacing itself within a few days after being damaged or removed. The deeper layer of the cornea – the stroma, on the contrary, is a permanent corneal tissue with very limited regenerative capacity. The stroma, if reshaped by a laser, will remain that way permanently.
In this procedure, a thin, circular "FLAP" is created in the surface of the cornea to gain access to the permanent corneal tissue. This can be done with a mechanical cutting tool called a microkeratome, OR, for a blade-free experience, by a femtosecond laser. An excimer laser is then used to remove some corneal tissue to reshape the cornea. Excimer laser uses cool ultraviolet light beams to vaporize microscopic amounts of tissue in a precise manner to accurately reshape the cornea. The excimer laser is computer-controlled and is programmed based on the patient’s refractive error. The flap is then laid back in place and is allowed to heal.
LASIK eye surgery is mostly painless and can be completed within minutes. Improved vision can usually be seen overnight.

PRK, or photorefractive keratectomy, was the first type of laser eye surgery for vision correction and is the predecessor to the popular LASIK procedure. In PRK, NO flap is created. Rather, the epithelial cells on the eye surface are simply removed. An excimer laser is then used to reshape the cornea just like it does in LASIK.
The vision correction outcomes of PRK surgery are comparable to those of LASIK, but the recovery period is longer. This is because the epithelium is completely removed in PRK and it takes a few days to regenerate. PRK patients also have more discomfort and haziness of vision in the first few days after the surgery. Improved vision also takes longer to achieve.
PRK does, however, offer certain advantages. Because PRK does not involve creation of a flap, which contains both epithelial and deeper stromal tissue, the entire thickness of the stroma is available for treatment. The treatment range is therefore higher. This is particularly useful for patients with high levels of myopia or for those whose cornea is too thin for LASIK. PRK is also free of flap-related complication risks.

Omphalocele
Omphalocele samer kareem 8,593 Views • 2 years ago

An omphalocele is a birth defect in which an infant's intestine or other abdominal organs are outside of the body because of a hole in the belly button (navel) area. The intestines are covered only by a thin layer of tissue and can be easily seen.

The development of the gastrointestinal tract
The development of the gastrointestinal tract samer kareem 2,526 Views • 2 years ago

The gastrointestinal tract (GIT) arises initially during the process of gastrulation from the endoderm of the trilaminar embryo (week 3) and extends from the buccopharyngeal membrane to the cloacal membrane. The tract and associated organs later have contributions from all the germ cell layers. During the 4th week three distinct regions (fore-, mid- and hind-gut) extend the length of the embryo and will contribute different components of the GIT. The large mid-gut is generated by lateral embryonic folding which "pinches off" a pocket of the yolk sac, the 2 compartments continue to communicate through the vitelline duct. The oral cavity (mouth) is formed following breakdown of the buccopharyngeal membrane (oropharyngeal or oral membrane) and contributed to mainly by the pharynx lying within the pharyngeal arches (More? Head Development). Loss of buccopharyngeal membrane opens the tract to amniotic fluid through the remainder of development, and during the fetal period is actively swallowed.

karnim herbal capsules
karnim herbal capsules karnim cap 1,888 Views • 2 years ago

karnim herbal capsules

Horizontal Mattress Suturing
Horizontal Mattress Suturing DrPhil 14,205 Views • 2 years ago

Demonstration of horizontal mattress suturing technique for laceration repair or wound closure in the operating room.

Intercostal Tube Insertion
Intercostal Tube Insertion Doctor 17,555 Views • 2 years ago

Intercostal Tube Insertion in case of pneumothorax

Testing Urine for Protein and Glucose by Dip Stick
Testing Urine for Protein and Glucose by Dip Stick Scott 12,375 Views • 2 years ago

This video demonstrates how use a commercially-prepared "dip-stick" to test a random urine specimen for the presence of protein or glucose.

Anatomy of The Gastrointestinal Tract GIT
Anatomy of The Gastrointestinal Tract GIT Anatomy_Videos 12,714 Views • 2 years ago

Anatomy of The Gastrointestinal Tract GIT

Anatomy of The Pharynx
Anatomy of The Pharynx Anatomy_Videos 7,420 Views • 2 years ago

Anatomy of The Pharynx

Anatomy of The Superficial Face
Anatomy of The Superficial Face Anatomy_Videos 29,806 Views • 2 years ago

Anatomy of The Superficial Face

Histology of Heart Cardiac Muscle
Histology of Heart Cardiac Muscle Histology 4,620 Views • 2 years ago

Histology of Heart Cardiac Muscle

Histology of Thymus
Histology of Thymus Histology 4,741 Views • 2 years ago

Histology of Thymus

Incentive Spirometry - Clinical Nursing Skills |  @Level Up RN ​
Incentive Spirometry - Clinical Nursing Skills | @Level Up RN ​ nurse 63 Views • 2 years ago

Ellis Parker MSN, RN-BC, CNE, CHSE covers Incentive Spirometry. The Critical Nursing Skills - Shorts series is intended to help RN and PN nursing students study for nursing school exams, including the ATI, HESI and NCLEX.

#NCLEX #HESI #Kaplan #ATI #NursingSchool #NursingStudent⁠ #Nurse #RN #PN #Education #LVN #LPN #clinicalskills #safety

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Cardiovascular System
Cardiovascular System samer kareem 7,838 Views • 2 years ago

The heart, blood vessels, and blood are the parts that make up the circulatory system, which is defined as a closed system of blood vessels for the transport of gasses and nutrients. The heart is the key organ in the circulatory system. As a hollow, muscular pump, its main function is to propel blood throughout the body.

Life Before Birth - In the Womb
Life Before Birth - In the Womb samer kareem 13,998 Views • 2 years ago

Life Before Birth - In the Womb

Wilson Disease
Wilson Disease samer kareem 10,105 Views • 2 years ago

Wilson's disease is a rare inherited disorder that causes too much copper to accumulate in your liver, brain and other vital organs. Symptoms typically begin between the ages of 12 and 23. Copper plays a key role in the development of healthy nerves, bones, collagen and the skin pigment melanin. Normally, copper is absorbed from your food, and any excess is excreted through bile — a substance produced in your liver.

Hypothalamus and Pituitary
Hypothalamus and Pituitary samer kareem 4,508 Views • 2 years ago

The pituitary gland is often portrayed as the "master gland" of the body. Such praise is justified in the sense that the anterior and posterior pituitary secrete a battery of hormones that collectively influence all cells and affect virtually all physiologic processes. The pituitary gland may be king, but the power behind the throne is clearly the hypothalamus. As alluded to in the last section, some of the neurons within the hypothalamus - neurosecretory neurons - secrete hormones that strictly control secretion of hormones from the anterior pituitary. The hypothalamic hormones are referred to as releasing hormones and inhibiting hormones, reflecting their influence on anterior pituitary hormones.

MITOSIS
MITOSIS samer kareem 5,292 Views • 2 years ago

Mitosis is the process in which a eukaryotic cell nucleus splits in two, followed by division of the parent cell into two daughter cells. The word "mitosis" means "threads," and it refers to the threadlike appearance of chromosomes as the cell prepares to divide.

Euthyroid sick syndrom
Euthyroid sick syndrom samer kareem 5,734 Views • 2 years ago

Euthyroid sick syndrome (ESS), sick euthyroid syndrome (SES), thyroid allostasis in critical illness, tumours, uremia and starvation (TACITUS), non-thyroidal illness syndrome (NTIS) or low T3 low T4 syndrome is a state of adaptation or dysregulation of thyrotropic feedback control where the levels of T3 and/or T4 are ...

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