Dr. Albith Colon Negron - Taking care of your medical problems

About Albith Colon Negron :
concave lens - A lens with a hollow shape like the inside surface of a
ball. Concave lenses are - (minus) power lenses and are used to correct
myopia or near-sightedness.

Dr. Albith Colon Negron Info

However, this does not mean that it will eliminate flap problems, in
fact flap wrinkles and other related problems are still possible,
though less likely, with the IntraLase laser. Proponents of the
IntraLase created flap, such as Dr. Woodhams and Dr. Kameen, use the
system for the majority of their LASIK patients, claiming that they can
achieve better visual acuity while cutting down on the occurrence of
major complications. Detractors say that there is no clinically
substantial evidence that better vision is possible or that such risks
are significantly reduced, while surgery takes longer and additional
complications are introduced.

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Mitral valve surgery involves an open-heart operation. The sternum
(breast bone) is split down the middle, allowing access to the heart.
The heart is actually stopped during the critical parts of the
operation, and a special machine is used to pump oxygenated blood
throughout the body during the operation. A small part of the heart is
then opened to expose the mitral valve. In some cases, surgeons replace
the leaky mitral valve with an artificial valve. The most commonly used
artificial valve, the St. Jude's Valve (Figure 3), is a mechanical
valve made of metal and other synthetic materials. The St. Jude's valve
consists of two semicircular discs that open and close with each
contraction of the left ventricle. Metal valves such as these are
durable, often lasting more than 20 years. The one disadvantage of
mechanical valves is that there is a small potential for a blood clot
to form on the valve. This blood clot can break off and travel to the
brain, causing a stroke. To prevent this complication, patients who
receive mechanical heart valves are treated with the blood
anticoagulant warfarin (Coumadin®) to thin the blood and decrease the
chance of blood clot formation.

In some cases of mitral regurgitation, the surgeon repairs the
dysfunctional mitral valve instead of replacing it. It takes great
skill and experience to properly repair a mitral valve, and not every
dysfunctional mitral valve can be repaired. When the repair is
successful, patients often do very well and do not require chronic
treatment with blood thinners.

Dr. Albith Colon Negron Bio
Thrombotic infarct (approx. 10-15% of cases) occurs when a blood clot
forms in an artery that supplies the brain, causing tissue death. This
type usually occurs as a result of plaque build-up in arteries
(atherosclerosis ) and develops over time.

Lacunar infarct (approx. 20% of cases) usually occurs as a result
of arterial blockage caused by high blood pressure (hypertension). This
type of stroke has the best prognosis.

A transient ischemic attack (TIA) is a transient event that is a
risk factor for ischemic stroke. In a TIA, arterial blockage in the
brain occurs briefly and resolves on its own, without causing tissue
death. Approximately 10% of ischemic strokes are preceded by a TIA, and
about 40% of patients who experience a TIA will have a stroke.