instruction:
Given an abstract, generate a keyword (a noun phrase) that best describes the focus or contribution of the paper. Such keywords can be directly from the given abstract or outside it.
question:
Abstract: Common peroneal mononeuropathies, usually located at the fibular head, are one of the many causes of foot-drop, a condition often evaluated in the electromyography laboratory. If appropriate nerve conduction studies are performed and particular muscles studied on needle myography, a satisfactory diagnosis can almost always be provided for what may be a perplexing problem clinically. With all peroneal mononeuropathies, the compound muscle action potential amplitude of the peroneal motor tibialis anterior nerve conduction studies, stimulating distal to the fibular head, is a semi-quantitative measure of the number of viable fibers supplying the tibialis anterior and allows for accurate prognostication regarding the foot-drop.
answer:
Case Report

question:
Abstract: Following nephrectomy and acute potassium loading, animals previously maintained on a high potassium diet have a smaller increment in plasma potassium than do animals on a control diet. The mechanism of this "extrarenal potassium adaptation" is not known. To explore the role of potassium depletion in this process, we studied rats adapted to either a high potassium (HK) or control (C) diet. When dietary potassium was withdrawn, urinary potassium losses in HK rats greatly exceeded those in C rats for at least two days, leading to greater potassium depletion in HK than C animals. A smaller increment in plasma potassium in HK compared to C rats was seen only after prolonged fasting preceded nephrectomy and acute potassium loading. Correction of potassium depletion incurred during fasting abolished extrarenal potassium adaptation. We conclude: after withdrawal of dietary potassium, urinary potassium losses are much greater in HK than in C rats; if the duration of dietary potassium deprivation is sufficient, these urinary potassium losses will cause potassium-adapted animals to paradoxically become more potassium depleted than controls; and this paradoxical potassium depletion may be responsible for extrarenal potassium adaptation.
answer:
Adaptation, Physiological

question:
Abstract: Immunocomplexes (IC) in serum were analyzed in 54 patients with subarachnoid hemorrhage (SAH) from ruptured arterial aneurysms. A previous study had shown that patients with SAH and vasospasm had a significantly higher incidence of ICs in the blood than patients without vasospasm. The aim of the present study was to study how the IC content varied with time and compare this pattern with the clinical picture. Forty-two patients presented clinical or radiological signs of cerebral vasospasm during their hospital stays, whereas 12 patients showed no such signs. The patients with vasospasm had a significantly higher amount of ICs in serum than those without vasospasm. In 37 patients with vasospasm, the changes of IC content during the 1st weeks after SAH correlated well with the clinical course. Data indicated that a high IC content preceded the onset of vasospasm and a low content preceded clinical improvement. This observation supports the idea that the presence of ICs might be the cause and not the result of vasospasm.
answer:
Adult