Critical care : the official journal of the Critical Care Forum
-
Validation of a method to partition the base deficit in meningococcal sepsis: a retrospective study.
The base deficit is a useful tool for quantifying total acid-base derangement, but cannot differentiate between various aetiologies. The Stewart-Fencl equations for strong ions and albumin have recently been abbreviated; we hypothesised that the abbreviated equations could be applied to the base deficit, thus partitioning this parameter into three components (the residual being the contribution from unmeasured anions). ⋯ It is now possible to partition the base deficit at the bedside with enough accuracy to permit clinical use. This provides valuable information on the aetiology of acid-base disturbance when applied to a cohort of children with meningococcal sepsis.
-
The definition of risk in surgical patients is a complex and controversial area. Generally risk is poorly understood and depends on past individual and professional perception, and societal norms. ⋯ The usefulness of risk assessment and the definition of risk is however in doubt because there are very few studies that have materially altered patient outcome based on information gained by risk assessment. This paper discusses these issues, highlights areas where more research could usefully be performed, and by defining limits for high surgical risk, suggests a practical approach to the assessment of risk using risk assessment tools.
-
Review
Bench-to-bedside review: humanism in pediatric critical care medicine - a leadership challenge.
A humanistic approach to leadership is especially important in the case of children in the technology-rich intensive care unit (ICU) environment. Leaders should create a humanistic milieu in which the needs of critically ill children, their families and staff are never overlooked. Humanistic leaders are tactful, accessible, approachable and versatile, and have a sense of humour. ⋯ Humanistic leaders treat others as they hope they will become. They are constantly questioning themselves, seeking awareness of themselves and others, but most importantly they are constantly learning and evolving. Ultimately, humanistic leadership creates an ICU culture that supports all, is conducive to enriching lives, and is sensitive to the needs of patients and their families.
-
Randomized Controlled Trial
Intrapulmonary percussive ventilation in acute exacerbations of COPD patients with mild respiratory acidosis: a randomized controlled trial [ISRCTN17802078].
We hypothesized that the use of intrapulmonary percussive ventilation (IPV), a technique designed to improve mucus clearance, could prove effective in avoiding further deterioration in patients with acute exacerbations of chronic obstructive pulmonary disease (COPD) with mild respiratory acidosis. ⋯ IPV is a safe technique and may prevent further deterioration in patients with acute exacerbations of COPD with mild respiratory acidosis.
-
To assess changes in renal blood flow (RBF) in human and experimental sepsis, and to identify determinants of RBF. ⋯ The impact of sepsis on RBF in humans is unknown. In experimental sepsis, RBF was reported to be decreased in two-thirds of studies (62 %) and unchanged or increased in one-third (38%). On univariate analysis, several factors not directly related to sepsis appear to influence RBF. However, multivariate analysis suggests that cardiac output has a dominant effect on RBF during sepsis, such that, in the presence of a decreased cardiac output, RBF is typically decreased, whereas in the presence of a preserved or increased cardiac output RBF is typically maintained or increased.