By Arnold J. Rudolph, Arnold J. Rudol, Arnold J. Rudolph MD
Colour atlas of neonatology. quantity of a 5 quantity set overlaying a whole diversity of dermatologic, cardiac, pulmonary, gastrointestinal, genitourinary, neurologic, and musculoskeletal issues, genetics, and syndromes.
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Extra resources for Atlas of the Newborn. Musculoskeletal Disorders
Respiratory arrest may occur secondary to direct damage to the midbrain respiratory center or as a result of tetanic contraction of the respiratory musculature. Associated conditions that can complicate the resuscitation effort include fractures, myoglobinuria, head injury, and nerve injury. 2. The extent of injury is determined by: a. The type of current (an alternating current is more dangerous than a direct current, because alternating currents can induce tetany) b. The duration of exposure c.
The extent of injury is determined by: a. The type of current (an alternating current is more dangerous than a direct current, because alternating currents can induce tetany) b. The duration of exposure c. The pathway of the current (the hand-to-hand transthoracic path is associated with a higher mortality rate than the hand-to-foot path) 3. The mortality rate ranges from 15%–30%. Respiratory paralysis often outlasts transient asystole, leading to a second, hypoxic, arrest as the terminal event.
The mechanism of action of closed chest compressions is unknown. The two leading theories are: (a) Cardiac pump theory. This theory suggests that the heart is squeezed between the sternum and spine, leading to the forward flow of blood. Backflow is prevented by the cardiac valves and the heart passively fills between compressions. Criticisms of this theory are that the arteriovenous pressure gradient may be equalized during arrest and the mitral or semilunar valves may be incompetent. qxd 9/7/06 3:36 PM Page 15 Resuscitation 15 (b) Thoracic pump theory.
Atlas of the Newborn. Musculoskeletal Disorders by Arnold J. Rudolph, Arnold J. Rudol, Arnold J. Rudolph MD