Critical care medicine
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Critical care medicine · Sep 1991
Effects of alterations in left ventricular filling, contractility, and systemic vascular resistance on the ascending aortic blood velocity waveform of normal subjects.
To confirm the consistent effects on Doppler-measured aortic blood flow velocity waveform variables of alterations in left ventricular preload, afterload, and inotropy using pharmacologic and physiologic maneuvers. ⋯ Aortic blood flow velocity waveform variables measured by Doppler ultrasound can be used to noninvasively follow changes in left ventricular preload, afterload, and inotropy.
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Critical care medicine · Sep 1991
Case ReportsProlonged paralysis after treatment with neuromuscular junction blocking agents.
Previous reports have described prolonged paralysis after treatment with neuromuscular junction blocking agents in critically ill patients. The purpose of this study was to further describe a group of patients who developed prolonged weakness after treatment with these agents. ⋯ Although alternative explanations cannot be excluded with certainty, the use of neuromuscular junction blocking agents may lead to neurogenic atrophy and care must be taken when using them.