Loss of tendon reflexes

Introduction Deep reflection is a reflection caused by stimulation of tendons and periosteal receptors, commonly referred to as tendon reflexes. With normal suprathreshold stimulation, it is not possible to induce a tendon reflex that should occur. It is usually indicated that the reflex arc is blocked, and except for the temporary disappearance, it indicates that there is an organic lesion.

Cause

Found in the reflex arc lesion, the cause of polio: the virus from the pharynx or intestinal wall into the local lymphoid tissue proliferation, while excreting the virus outward, at this time the body's immune response is strong, the virus can be eliminated, it forms a recessive infection; If the immune response fails to clear the local virus, the virus can enter the blood circulation through the lymph, forming the first viremia, and then spread to the whole body lymphoid tissue for proliferation, and the virus multiplies and then enters the blood again to form a second viremia. If the virus does not invade the nervous system, the body's immune system can eliminate the virus and form a frustrating infection; the virus invades the nervous system, the light does not occur, it is called innocent type; the severe one occurs, called the sputum type.

During this period, factors such as fatigue, infection, local irritation (such as trauma, intramuscular injection), surgery and vaccination can reduce the body's resistance, make the condition worse, and promote the occurrence of sputum.

an examination

Related inspection

CT detection of viral infection in bone and joint and soft tissue

When examining the sputum reflex, the limb to be inspected should be fully exposed and compared on both sides. If one side of the sputum reflex is found to be significantly reduced and the degree of disparity is very different, the sputum reflex is weakened. If the sputum reflections on both sides are reduced and the degree is similar, the limbs that are prone to reflex fatigue are weakened. If the sputum reflex cannot be extracted during the examination, attention should be paid to shifting the patient's attention. Repeated examinations are performed repeatedly using the reinforced method. When the sputum reflex is not induced by the method of strengthening or changing the position, the sputum reflex disappears. When inspecting, pay attention to the changes in the site to be examined for trauma, scars, joint deformities, contractures, inflammation, etc. Local changes in these can affect the accuracy of the test results.

Differential diagnosis

(a) Infectious multiple radiculitis neuritis (Guillain-Barre syndrome):

1. Polio: (1) early onset: more fever;

(2) limbs: asymmetrical flaccid paralysis, and the proximal end is heavier than the distal end;

(3) Feeling allergies: Yes;

(4) Sensory impairment: none;

(5) Early cerebrospinal fluid changes: separation of cell proteins; (6) legacy sequelae: many;

2. Infectious multiple radiculitis:

(1) early onset: very little fever; (2) limbs: symmetrical flaccid paralysis, and the distal end is heavier than the proximal end;

(3) Allergies: None

(4) sensory impairment: yes;

(5) Early cerebrospinal fluid changes: protein cell separation; (6) legacy sequelae: more than none;

(B) peripheral neuritis: improper placement of the buttocks, vitamin C deficiency, diphtheria neuropathy, etc. caused by sputum can be identified according to medical history, sensory examination and related clinical features.

(C) Familial periodic paralysis: less common, often family history and periodic episodes, sudden emergence of sputum, rapid development of symmetry, blood potassium decreased at the time of onset, rapid recovery after potassium supplementation.

(4) False sputum: If the baby has congenital dislocation of the hip, fracture, osteomyelitis, subperiosteal hematoma, pseudo sputum can be seen. Detailed medical history, physical examination, and X-ray examination are easy to confirm if necessary.

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