By Mitsuru Wada (auth.), Satoshi Matsumoto M.D., Kiyoshi Sato M.D., Norihiko Tamaki M.D., Shizuo Oi M.D. (eds.)
Distribution rights for Japan: Neuron Publishing Co., Tokyo, Japan
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Additional resources for Annual Review of Hydrocephalus: Volume 7 1989
A reduction of CPP below this level abruptly reduced the correlation with ICP . Thus, the CPP threshold showed an increase related to age (from 20 mm Hg in preterm babies at birth to 80 mm Hg at 12 months of age) and is correlated with the psychomotor development evaluated 6-36 months after shunting. The abnormal waves that appear when there is a high level of 1] HB and that also appear below the threshold level of CPP can be defined as pressure waves, based on the physiological findings. It was shown that in hydrocephalus during infancy, a prolonged ICP below the threshold of CPP is one of the cerebrohemodynamic factors that can adversely affect the outcome of psychomotor development.
ANDERSON and lohn R . MAWK Department of Radiology, University of Nebraska Medical Center, Om aha, Nebraska , USA Several factors influence cerebral arterial velocity waveform s as measured by duplex Doppler ultrasound. In addition to alterations in the cardiovascul ar system such as pulse rate and patent ductus arteriosus, pathology causing increased resistance of the cerebral vasculature such as hemorrhage, hydrocephaly, and hypoxic-ischemic encephalopathy appear to cause an increase in pulsatility of the velocity waveform.
It is, however , related to the true physical compliance of the system . The volume-pressure response is related to venous outflow resistance. The use of systems analysis of the CSFPW in the neurosurgical intensive care unit (NICU) is reviewed. In our experience the use of spectral analysis in the NICU has met with only limited success, primarily because the change in the CSFPW is stereotyped and need not reflect the clinical status of the patient. (J Pediatr Neurosei 4: 227-250, 1988) Key words: CSF pulse wave, Intracranial pressure, Myogenic autoregulation, Compliance, Starling resistor Relationship Between Plateau Waves and Respiration: Experimental study in kaolin-induced hydrocephalic dogs with normal intracranial pressure Yukihiko UEDA, Takashi MATSUMOTO, Mitsuhito MASE, and Hajime NAGAI Department of Neurosurgery , Nagoya City University Medical School, Nagoya, Japan Plateau waves are often observed in patients with "normal pressure hydrocephalus" during continuous monitoring of intracranial pressure (ICP).
Annual Review of Hydrocephalus: Volume 7 1989 by Mitsuru Wada (auth.), Satoshi Matsumoto M.D., Kiyoshi Sato M.D., Norihiko Tamaki M.D., Shizuo Oi M.D. (eds.)