Top videos

Head Lymph Nodes exam
Head Lymph Nodes exam DrPhil 40,587 Views • 2 years ago

Examination of the lymph nodes of the head

Heart and Lungs Exam
Heart and Lungs Exam DrPhil 53,913 Views • 2 years ago

Examination of the heart and lungs with heart sounds

Examinaion of foot and ankle
Examinaion of foot and ankle DrPhil 18,936 Views • 2 years ago

full examination of the foot and ankle

Bad Lasik Surgery
Bad Lasik Surgery Mohamed Ibrahim 65,096 Views • 2 years ago

A very bad lasik eye surgery duringwhich the surgeon messed everything

Coronary Artery Bypass Grafting
Coronary Artery Bypass Grafting M_Nabil 23,256 Views • 2 years ago

Off-Pump Coronary Artery Bypass Grafting (CABG)

RETINAL SURGERY
RETINAL SURGERY Mohamed Ibrahim 11,694 Views • 2 years ago

This video shows a surgeon's view during vitrectomy for macular pucker and indocyanine green assisted removal of the ILM.

Total Laparoscopic Hysterectomy
Total Laparoscopic Hysterectomy Mohamed Ibrahim 22,111 Views • 2 years ago

Removal of the womb by keyhole surgery. The womb is detached from its pelvic attachments and removed through the birth canal. The birth canal is then stitched closed.

Total Knee Replacement
Total Knee Replacement Mohamed 25,555 Views • 2 years ago

total knee joint replacement surgery

Inspection of the Neck
Inspection of the Neck Surgeon 18,783 Views • 2 years ago

Inspection of the neck

Laparoscopic Adjustable Gastric Band procedure
Laparoscopic Adjustable Gastric Band procedure Mohamed 12,896 Views • 2 years ago

Dr. Jawad has been performing Bariatric Surgery in Central Florida since 1984, and Laparoscopic Bariatric Surgery since 1999, having completed over 2000 Bariatric Surgical Cases safely, and with great success. Here you can watch Dr. Jawad performing a Laparoscopic Adjustable Gastric Band procedure, with audio commentary describing the procedure.

Thyroidectomy surgery
Thyroidectomy surgery Mohamed 31,163 Views • 2 years ago

thyroid gland removal is the standard procedure for thyroid cancer treatment.
Total removal of the gland is therapeutic in most cases of thyroid cancer.

Vasa Previa
Vasa Previa Scott 21,501 Views • 2 years ago

A video showing the Vasa Previa which is an abnormality of the placenta

Fiberoptic Laryngoscopy and Bronchoscopy
Fiberoptic Laryngoscopy and Bronchoscopy M_Nabil 19,203 Views • 2 years ago

a video showing fiberoptic laryngoscopy and bronchoscopy

Hand Surgery Device (HAND FIXATION PLATFORM)
Hand Surgery Device (HAND FIXATION PLATFORM) DrHouse 14,034 Views • 2 years ago

The device has as great advantage that the accessibility increases in the hand, it maximizes the surgical area free of obstacles, it increases its functional versatility, for the material with the one that this made a maximum of durability is guaranteed, so that it can be sterilized in any team and it facilitates that the thumb is supported in relaxation state.
The considerable reduction of the surgical time of each intervention is inside the advantages that it provides this valuable instrument, also facilitating that they are executed with more security. For the stability that provide, it can also be used in bony fabrics of the hand. The instrument is both handle, of very easy use and great comfort in its handling. The standardization of most of its pieces makes it very simple. The solutions that are offered in this device for the subjection of the fingers and other parts of the hand are a novelty, but they also have the advantage that it commits very little surgical area and it guarantees a maximum of subjection staying the totally stable hand facilitating in great measure the surgeon's work. These pieces adapt to any diameter of fingers.

From axons to tracts
From axons to tracts Mohamed 21,058 Views • 2 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.

Breast Reduction Surgery
Breast Reduction Surgery M_Nabil 22,085 Views • 2 years ago

Breast reduction can relieve strain from shoulder straps, neck, back, and upper arms.
It can provide an uplift to help clothes fit and look better. Traditionally, insurance companies would provide benefits for a broad range of breast sizes and gram weight of tissue to be removed from each breast. At present most insurance companies limit authorization when the doctor plans to remove less than 500gm weight per breast. Since many patients present with symptoms in a D cup to DD cup, often, the very removal of over 500 grams weight may reduce the breasts too much. This amount of reduction may not be in harmony with body shape. Newer methods of breast assembly after reduction, will tighten things using internal brassiere techniques that also compact and reduce breast volume. Therefore, a gram weight reduction of 500gms in some patients combined with internal tightening efforts, could pose an over-reduction. With the unreliability of insurance support in some cases, it is best not to look solely at gram weight in the surgical planning of breast reduction. When excess skin and weight is removed, the improved location of the breasts on the chest will give marked relief of symptoms.

Surgery takes from 2 to 5 hours and can be done as an outpatient or with a brief overnight stay. When possible, no scarring other than around the areola can be planned which follows the Brazilian and French methods (Goes and Benelli). For very large reductions, a vertical method, or T pattern approach is offered. Recovery is a few days, with special care to avoid strain for 4 to 6 weeks. Some soreness may persist for a few weeks. The breasts can appear tight, swollen, and bruised at first, but will usually settle to their near final look by 6 weeks. There may be sutures to be removed in some cases. Costs relate to the severity of the sag, and weight of the breasts.

The operation can make a stunning change in body image, relief of upper body symptoms, and offer a cosmetic lift to naturally sloping breasts.

Holding Forceps
Holding Forceps Scott 16,148 Views • 2 years ago

A video showing the correct way to hold a forceps

Axillary Cannulation
Axillary Cannulation DrHouse 10,010 Views • 2 years ago

Axillary Cannulation: Antegrade Flow and Brain Protection

Hand Assisted Nephrectomy
Hand Assisted Nephrectomy M_Nabil 14,576 Views • 2 years ago

Hand Assisted Nephrectomy

one port laparoscopic technique of peritoneal dialysis catheter placement
one port laparoscopic technique of peritoneal dialysis catheter placement M_Nabil 24,822 Views • 2 years ago

Various laparoscopic techniques have been described for the insertion of peritoneal dialysis catheters. However, most use 3 to 4 ports, thus multiplying the potential risk for abdominal wall complications (hemorrhage, hernia, leaking). With the technique presented herein a Tenckhoff catheter is plac...ed laparoscopically, using just 1 port, in 13 consecutive patients with end-stage renal failure. The catheter is fixed in the abdominal cavity with no additional ports for this purpose. The simplicity and the rapidity of the method justifies serious consideration for its use as the standard Tenckhoff catheter placement.

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