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R. A. Groat, W. F. Windle and H. W. Magoun

and its equivalents has produced much confusion in the realm of traumatic brain injuries and their sequelae. We hope the present study will help form a basis for limiting its use. SUMMARY Concussions of the brain were induced in rhesus monkeys by striking the head with a pendulum apparatus, by dropping a weight on the piston of an hydraulic apparatus connecting with the interior of the cranium by means of a metal cannula, or by striking with a hammer a Wood's metal life-cast applied to the head. In acute physiologic experiments, it was demonstrated that

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Traumatic Subdural Hematoma—Acute, Subacute and Chronic

An Analysis of Seventy Operated Cases

Francis Echlin

group only 1 survived. The others all died within 5 days. Autopsy revealed extensive traumatic brain injury in all cases. Comment . These 10 patients suffered from a severe brain injury plus a fresh subdural hematoma. Death in 9 cases was due almost if not entirely to direct brain trauma, the hematoma, although large, being incidental. Survival in 1 case may be attributed to removal of the hematoma. The clinical course and pathological nature of the hematoma in patients operated upon 2 to 7 days after injury There were 11 patients with subdural hematoma

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Nils Lundberg, Henry Troupp and Henry Lorin

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George Austin June 1965 22 6 576 580 10.3171/jns.1965.22.6.0576 Continuous Recording of the Ventricular-Fluid Pressure in Patients with Severe Acute Traumatic Brain Injury Nils Lundberg Henry Troupp Henry Lorin June 1965 22 6 581 590 10.3171/jns.1965.22.6.0581 Protrusions of Thoracic Disc Robert G. Fisher June 1965 22 6 591 593 10.3171/jns.1965.22.6.0591 The “Lemmocyte” in Peripheral-Nerve Tumors Anselmo Pineda June 1965 22 6 594 601 10.3171/jns.1965.22.6.0594 Psychomotor Seizures and Mirror Focus Secondary to Retained Knife Blade in Temporal

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Factors Affecting the Clinical Course of Patients with Severe Head Injuries

Part 1: Influence of Biological Factors Part 2: Significance of Posttraumatic Coma

Carl-Axel Carlsson, Claes von Essen and Jan Löfgren

should be associated with a favorable prognosis seems to have remained largely unchanged through the years. In our series, the mortality would be reduced by one-fifth if secondary causes of death could be wholly eliminated. The improved results in the treatment of severe traumatic brain injuries reported by many authors in recent years should probably be considered in relation to the more effective means of combating various delayed extracranial complications. Coma Course The 325 survivors in this selected series of very serious brain injuries with protracted

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Robert A. Moody, Seri Ruamsuke and Sean Mullan

. , 1959 (Suppl. 139), 34: 1–64. 30. Lundberg , N. , Troupp , H. Lorin , H. Continuous recording of the ventricular-fluid pressure in patients with severe acute traumatic brain injury: a preliminary report. J. Neurosurg. , 1965 , 22 : 581 – 590 . Lundberg , N., Troupp , H., and Lorin , H. Continuous recording of the ventricular-fluid pressure in patients with severe acute traumatic brain injury: a preliminary report. J. Neurosurg. , 1965, 22: 581–590. 31. MacIver , I. N. , Frew , I. J. C. , Matheson

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Eric Ellington and George Margolis

., and Crompton , M. R. Hydrocephalus in the adult following spontaneous subarachnoid hemorrhage. Brain , 1961, 84: 45–61. 14. Lundberg , N. , Troupp , H. , and Lorin , H. Continuous recording of the ventricular-fluid pressure in patients with severe acute traumatic brain injury: a preliminary report. J. Neurosurg. , 1965 , 22 : 581 – 590 . Lundberg , N., Troupp , H., and Lorin , H. Continuous recording of the ventricular-fluid pressure in patients with severe acute traumatic brain injury: a preliminary report. J

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Jarl Risberg, Nils Lundberg and David H. Ingvar

hyperventilation. A therapeutic aid in neurological surgery. Acta psychiat. neurol. scand. , 1959 (Suppl. 139), 34: 1–64. 21. Lundberg , N. , Troupp , H. , and Lorin , H. Continuous recording of the ventricular-fluid pressure in patients with severe acute traumatic brain injury: a preliminary report. J. Neurosurg. , 1965 , 22 : 581 – 590 . Lundberg , N., Troupp , H., and Lorin , H. Continuous recording of the ventricular-fluid pressure in patients with severe acute traumatic brain injury: a preliminary report. J. Neurosurg

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R. Zupping

the development of CSF metabolic acidosis was the most common disorder in patients with brain injury. Repeated investigations showed that the acidosis was most pronounced in the very first days following the injury or operation. In the succeeding days there was a tendency for the CSF acid-base status to return to normal; this was especially noticeable in cases with good recovery. TABLE 1 Acid-base and gas values of CSF and venous and arterial blood in patients with traumatic brain injuries Parameter * CSF Jugular Venous Blood

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Ralph A. W. Lehman, Theodore Krupin and Steven M. Podos

, Kassell NF, et al: Compression of cerebral vessels by intracranial hypertension. I. Dural sinus pressures. Acta Neurochir 15: 212–222, 1966 11. Lundberg N , Troupp H , Lorin H : Continuous recording of the ventricular-fluid pressure in patients with severe acute traumatic brain injury: a preliminary report. J Neurosurg 22 : 581 – 590 , 1965 Lundberg N, Troupp H, Lorin H: Continuous recording of the ventricular-fluid pressure in patients with severe acute traumatic brain injury: a preliminary report. J Neurosurg 22: 581