Hypoxia

Introduction Ischemia and hypoxia refers to the cerebral hypoxia-ischemic damage caused by perinatal asphyxia and hypoxia, and a series of neurological abnormalities appear in the clinic. It occurs mostly in the suffocating person, but it can also occur in premature babies. In order to reduce the disturbance to the child, cerebrospinal fluid examination should be avoided, and this examination should be performed only when it is necessary to exclude purulent meningitis. It is worth noting that normal newborn cerebrospinal fluid may have a very small amount of red blood cells entering the cerebrospinal fluid, or the cerebrospinal fluid may be pale yellow due to jaundice. Does not mean that there is a cranial bleeding.

Cause

The cause of blood hypoxia:

H/E is mainly caused by intrauterine distress, neonatal asphyxia and hypoxia, and a few can cause brain damage caused by other causes. It occurs mostly in the suffocating person, but it can also occur in premature babies.

an examination

Related inspection

Brain CT examination

Blood hypoxia check

1. Imaging diagnosis: Improve the accuracy of diagnosis.

(1) Skull B-mode ultrasound (B-ultrasound) examination: The infant's anterior humerus is used as a window for coronal and sagittal fan-shaped ultrasonography. It can be operated at the bedside, without the influence of radiation, and can be tracked and checked many times, with many advantages. It is clear for cerebral edema, brain parenchymal lesions and ventricular enlargement.

(2) Cranial computer scan photography (CT) examination: multi-level radiograph of cross-section of the horizontal level of the skull. The display of a small amount of subdural hemorrhage and subarachnoid hemorrhage is clearer than that of B-ultrasound, so CT and B-complementary examination can improve the diagnosis rate.

2. EEG and EEG power spectrum examination: EEG can have abnormal spikes, and EEG power map can find power reduction or misalignment.

3. Cerebrospinal fluid examination: In order to reduce the disturbance to the child, cerebrospinal fluid examination should be avoided, and this examination should be performed only when it is necessary to exclude purulent meningitis. It is worth noting that normal newborn cerebrospinal fluid may have a very small amount of red blood cells entering the cerebrospinal fluid, or the cerebrospinal fluid may be pale yellow due to jaundice. Does not mean that there is a cranial bleeding.

Differential diagnosis

Blood hypoxia is easy to confuse symptoms:

Should be differentiated from transient cerebral ischemia. Transient ischemic attack (neurology) is due to the lack of transient blood supply to the arteries supplying the brain (mainly the intracervical-middle artery system or the vertebral-basal artery system), causing the corresponding arteries to distribute brain tissue temporarily. Sexual dysfunction. The clinical manifestations are recurrent brain localized symptoms and signs, such as hemiplegia, partial numbness, unclear speech and other symptoms. The disease is a common disease. The incidence of the elderly over 55 years old is high, and the male is higher than the female. It is characterized by rapid onset, short duration, complete recovery within 24 hours, multiple episodes can develop into complete stroke (large stroke), that is, repeated episodes of transient cerebral ischemia are often alarms of severe cerebral infarction, so timely diagnosis and treatment It is an important means of preventing a major stroke.

Insufficient blood supply to the brain leads to hypoxia in the brain, and hypoxia in the brain is not necessarily insufficient for blood supply to the brain.

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