Contents:
- Medical Video: Ischemic Stroke
- Pure motor strokes
- Pure sensory stroke
- Sensorimotor lunar stroke
- Ataxic Hemiparesis
- Dysarthria Clumsy-Hand Syndrome
Medical Video: Ischemic Stroke
Lacunar stroke is a stroke that occurs because the small branches in the blood vessels stagnate. Because the blood vessel pathway is divided in the brain, lacunar strokes tend to occur in areas located far from the surface of the brain, where there are many smaller branches of blood vessels.
Because most areas of the brain carry out a limited range of brain functions, the symptoms of lacunar stroke usually fall into one of five categories of symptoms caused by damage in these areas, namely:
Pure motor strokes
Pure Motor Strokes is the most common type of lacunar stroke, which is more than 50% of all cases. Some people use the term "pure motor hemiparesis" to describe pure motor strokes, even though this is excessive. The word hemiparesis means the weakness of one side of the body, and the word "weak", according to medical experts, is a word that only applies to the motor components of the nervous system.
Pure motor strokes usually involves the following parts of the brain:
- Corona radiata
- Internal capsules
- Punch
- Medullary pyramids
All of these parts contain fibers that connect the "brain cortex", the nervous system area where the first command to initiate voluntary movements (walking, tapping feet) comes.
Parts of the nervous system activate the muscles of the entire body to move. In most cases, strokes in this area are described as a puppeteer who can no longer move the wooden puppet arm because the rope connected to the handle is broken.
In this example, a puppeteer is the brain cortex, while a rope allows the puppeteer to move the body parts of the doll to represent the affected area pure motor stroke lacunar.
Pure motor strokes causing partial or complete weakness of the face, arms and legs on one side of the body. This weakness can occur in only one part or in combination with one of the other two. Most common, pure motor strokes causing both weakness in the arms and legs, face, or all of these parts. However, symptoms can also occur in only one part.
By definition, pure motor strokes means there are no symptoms of loss of touch on any part of the body, and no symptoms of vision or speech.
Pure sensory stroke
Just like his name, pure sensory stroke lacunar is the only symptom of sensory abnormalities, such as numbness or pain, dead temperature, or pressure drop. Majority pure sensory stroke of lacunar affects the area of the brain called the thalamus, an area that is very involved in sensory processing from the whole body. Indra is affected pure sensory stroke including touch, pain, temperature, pressure, vision, hearing and taste.
Most cases pure sensory stroke The lacunar produces unusual sensations on the face, arms, legs, chest, genitals, and anus, but only on one side of the body. In many cases, different parts of the body such as fingers, legs or mouth on one side are also exposed separately. General type of pure sensory stroke lacunar is called Dejerine Roussy, or Central Pain Syndrome.
Sensorimotor lunar stroke
This type of lacunar stroke clogs the vessels that supply both the adjacent thalamus and the posterior internal capsule.
Because the sensory and motor areas of the brain are both affected by the type of stroke, the symptoms include sensory disorders (damage to the thalamus) and hemiparesis orhemiplegia (internal capsule damage). Sensory and motor abnormalities are both felt on the same side of the body.
Ataxic Hemiparesis
This type of stroke is most often caused by a lack of blood flow to one part of the brain, namely:
- Internal capsules
- Corona radiata
- Punch
Lacunar stroke in certain parts of these areas, which can also cause symptoms pure lunar motor, can cause muscle darkness and weak arms or legs on one side of the body. Usually, muscle weakness (ataxia) is a symptom that is far more disturbing than weakness in the affected arm or leg. The face is usually not involved.
Dysarthria Clumsy-Hand Syndrome
By definition, clumsy-hand dysarthria is a combination of symptoms caused by a lacunar stroke that affects the anterior part of the internal capsule. In the case of this syndrome, people suffer from both dysarthria and stiff hands.
As the name suggests, the prominent feature of this syndrome is a speech disorder called dysarthria. Dysarthria can be defined as difficulty pronouncing or forming words because of inadequate movements of the muscles in the voice box such as the larynx, tongue, and other muscles in the mouth.
In addition to dysarthria, people with this syndrome complain of the rigidity of hand movements on one side of the body. Usually the affected side has normal strength, but people complain of difficulty in fine motor movements such as writing, tying shoelaces, or playing the piano.
