Licensed books on medicine
<< Ahead || Next >> |
In the study of sensitivity based on the testimony of patients in response to certain stimuli. However, the study of sensitivity in children presents great difficulties, since the child cannot always clearly differentiate the stimulation, correctly analyze his feelings and adequately describe them. In young children, it is often necessary to confine ourselves to the study of pain sensitivity only, since the reaction to pain stimuli is most noticeable. In the study of sensitivity establish the nature and scope of the violation. First, examine the surface sensitivity, then deep.
Tactile sensitivity, or sense of touch, is examined by gently touching the skin with a cotton swab or brush. Irritations must be applied not too often and at irregular intervals. Waving movements along the surface of the body should be avoided so that there is no summation of stimuli.
Pain sensitivity is determined using a pin or needle. Pain irritation is advisable to alternate with tactile.
Thermal sensitivity is investigated by touch with test tubes with hot or cold water. Irritations are applied from top to bottom (face, neck, arms, torso, leg), and then the sensitivity is compared on symmetrical areas of the left and right half of the body.
After studying surface sensitivity, deep (proprioceptive) sensitivity is investigated: joint and muscular feeling, vibration sensitivity, feeling of pressure and weight. The joint-muscular feeling, or feeling of position and movement, is examined with the help of passive movements in small and large joints. The study begins with movements in the terminal phalanges of the fingers and toes. The patient must recognize the direction and localization of the movement. The sense of pressure is determined by pressing a finger. The subject must distinguish between touch and pressure. The feeling of gravity is examined with the help of objects (weights) applied to the extended arm.
The child distinguishes the difference in 15 - 20 g. Vibration sensitivity is examined by applying the legs of a vibrating tuning fork to one or another part of the body.
In clinical practice, complex types of sensitivity are also investigated: a feeling of localization of irritation, a two-dimensional feeling (the definition of a digit, a letter or a figure with eyes closed, drawn by a blunt object on the skin), stereognosis — the ability to recognize objects by touch with eyes closed.
Sensory impairment can be quantitative and qualitative. The quantitative include loss of all types of sensitivity (anesthesia) or their decrease (hypostezia). The loss of any one type of sensitivity can be expressed (pain - analgesia, tactile - actually anesthesia, temperature - thermal anesthesia, joint-muscular feeling - bathianesthesia, stereogneosis - asterognosis, etc.). Sometimes sensitivity may be increased (hyperesthesia). Qualitative disturbances of sensitivity include a split pain sensation (when a needle is pricked, the patient first feels a touch and only then pain), a perverse stimulus perception, when heat is perceived as cold, an injection is like a hot touch, etc. (dysesthesia), the dissociation of sensitivity - an isolated violation of some types of sensitivity while maintaining on the same side of other types, etc.
An important place among sensitivity disorders take pain. They can be local (felt in the area of irritation), projection (projected from the place of irritation to the skin area innervated by the nerve), radiating (occur in the innervation zone of one branch of the nerve and transmitted to other branches of the same nerve), reflected (appear when diseases of internal organs and localized in certain areas of the skin, which are called zones Zakharyin - Ged)
| << Ahead || Next >> |
| = Go to tutorial content = |
- RESEARCH SENSITIVITY
In the study of sensitivity based on the testimony of patients in response to certain stimuli. However, the study of sensitivity in children presents great difficulties, since the child cannot always clearly differentiate the stimulation, correctly analyze his feelings and adequately describe them. In young children, it is often necessary to confine ourselves to researching only
- RESEARCH METHODOLOGY SENSITIVITY
Tactile (tactile) sensitivity, with the help of which a person recognizes tangential stimuli, is examined, suggesting that the subject is examined, with his eyes closed, to register each irritation inflicted on different areas of the body surface in the form of touches with thin paper or a piece of cotton wool. The study of pain sensitivity is to recognize the irritation caused by the tip
- Sensitivity and types of sensitivity disorders
Sensitivity - the body's ability to perceive irritation emanating from the environment or from its own tissues and organs. The analyzer consists of three sections: the receptor, the conductor part and the cortical department. Receptors are the terminal formations of sensory nerve fibers that perceive changes in the body or outside of it and transmit it in the form of impulses.
- SENSITIVITY RESTORATION
When reading this section, one should take into account the fact that we are talking about the possibility of restoring sensitivity, and not its normalization. With anatomical damage to the spinal cord, recovery of sensitivity proceeds in a certain sequence. The surface skin sensitivity is restored first. Gradually emerging foci of skin sensitivity expand and
The primary perception of all stimuli in the human body is carried out by receptors - specific cells that perceive the effects of external and changes in the internal environment of the body. Exteroreceptor Receptors Proprioceptors Interoreceptors General features of three-neural pathways of superficial and deep sensitivity • The first neuron is located in the intervertebral node.
- SENSITIVITY DISORDER
In the clinic, it is customary to distinguish between types and types of sensitive disorders. There are the following types of sensitivity disorders, which are allocated depending on the qualitative or quantitative changes in sensations. Anesthesia - the complete loss of any kind of sensitivity - is due to the fact that, due to some obstacles, the impulses do not reach the corresponding cortical
- SENSITIVITY DISORDER
Pain syndrome occurred in 87 patients (100%). Local morbidity in the field of injury and pain symptoms accompanying spastic convulsions was observed in 87 patients (100%); phantom pains - in 13 patients (14.9%); radicular pain - in 87 patients (100%); causalgias were observed in 17 patients (19.5%). In addition to pain, violation of all types of sensitivity was observed below
Sensitivity - the body's ability to perceive irritation emanating from the environment or from its own organs and tissues. In physiology, the entire set of afferent systems is united by the concept of reception. Sensitivity is a special case of reception when afferent impulses lead to the formation of sensations. Not everything that is subject to reception is felt. For example: afferent to
- Sensitivity and its violations
Sensitivity - the body's ability to perceive irritation emanating from the environment or from its own tissues and organs. Teaching I.P. Pavlov on analyzers laid the foundation for a natural science understanding of the nature and mechanisms of sensitivity. Each analyzer consists of a peripheral (receptor) department, a conductor part, and a cortical department. Receptors - special
- Sensitivity of the organ of hearing
Our auditory organ is very sensitive. In normal hearing, we are able to distinguish sounds that cause negligible (calculated in micron fractions) vibrations of the eardrum. The sensitivity of the auditory analyzer to the sounds of different heights varies. The human ear is most sensitive to sounds with an oscillation frequency of 1000 to 3000. As you decrease or
- TYPES OF SENSITIVITY
The nervous system developed in the process of interaction of the organism with the external environment. This process is dynamic, the nervous system changes and is constantly being improved in phylogenesis and ontogenesis. When signals come from the external and internal environment, the nervous system ensures the implementation of beneficial reactions and maintenance of homeostasis. A complex of afferent systems that receive information at
- PRIVATE SYMPTOMATOLOGY OF SENSITIVITY DISORDERS
The lesion of the peripheral nerve trunk causes a violation of all types of sensitivity in the area of its innervation, i.e., in the peripheral mononeuritic type. This results from the fact that in a trunk of a nerve pass nerve fibers for various types of sensitivity. The damage of individual nerve fibers can be more or less deep, which leads to unequal violation of certain types
- Polyneuritic type of sensitivity disorder
The zone and nature of the sensitivity disorder detected in a patient can contribute to the solution of the question of the localization of his pathological focus. Topical diagnostics will undoubtedly become more reliable if this also takes into account information about other changes in the neurological status associated with disorders of sensitivity. With the defeat of various levels of the system
- Cortical Disorder
(Internet) Sensitivity - the body's ability to perceive irritation emanating from the environment or from its own organs and tissues. In physiology, the entire set of afferent systems is united by the concept of reception. Sensitivity is a special case of reception when afferent impulses lead to the formation of sensations. Not everything that is subject to reception is felt. For example:
Under the sensitivity refers to the ability to elementary form of mental reflection - sensation. Unlike irritability, the concept of “signality” is used in the concept of “Ch.”. Ch. Is a reflection by the body of such effects that are not directly biologically significant (for example, because of its energy weakness), but can signal the presence (change) of other conditions Wednesday,
- PRIVATE SYMPTOMATOLOGY OF SENSITIVITY DISORDERS
The lesion of the peripheral nerve trunk causes a violation of all types of sensitivity in the area of its innervation, i.e., in the peripheral mononeuritic type. The damage to the plexus (cervical, brachial, lumbar, sacral) causes sensory, motor and autonomic disorders in the area innervated by the nerves, combined with pain and paresthesia and belong to
- SYNDROMES OF SENSITIVITY DISORDERS AND FUNCTIONS OF SENSITIVES
Depending on the boundaries of distribution, there are three main types of sensitivity disorders: peripheral - in the nerve innervation zone, segmental - in the innervation zone of the spinal cord segment, posterior (sensitive) root or intervertebral ganglion, conductive - below the level of damage to the sensory conductors in the spinal cord or brain. Depending on the level of lesions
- VT sensitive to adenosine
Adenosine has no direct effect on ventricular contractile fibers and Purkinje fibers, but it counteracts the positive inotropic and electrophysiological effects of catecholamines on these structures. V. Lerman et al. (1986) reported cases of adenosine-sensitive VT. In 4 patients (3 men and 1 woman; age - from 25 to 32 years) without signs of heart disease
- Undifferentiated Sensitivity Level
The lowest, germinal level of mental development, which responds according to A.N. Leontiev, undifferentiated sensitivity, immediately follows the pre-psychic form of life and the pre-psychic form of reflection. Accordingly, the phase of the background activity (always corresponding, as shown in § 3 of Chapter 1, to the previous level of development) is carried out here at the pre-mental level and