Measurement of sequential changes in plasma volume immediately after aortocoronary bypass surgery

Karanko, Meri S.; Ruotsalainen, P.; Uusipaikka, Esa; Laaksonen, V.

doi:10.1097/00003246-198605000-00002

Cited by 6 publications

(3 citation statements)

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“…Karanko et al . reported approximately 9% decrease in activity over 2 h due to plasma leak [15]. Consequently, the plasma volume may be overestimated.…”

Section: Discussionmentioning

confidence: 99%

Effects of hypertonic saline (7.5%) on extracellular fluid volumes in healthy volunteers

Järvelä¹,

Koskinen²,

Kööbi³

2003

Anaesthesia

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SummaryWe developed a screening questionnaire to be used by nurses to decide which patients should see an anaesthetist for further evaluation before the day of surgery. Our objective was to measure the accuracy of responses to the questionnaire. Agreement between questionnaire responses and the anaesthetist's assessment was assessed. For questions with a prevalence of 5 to 95%, the Kappa coefficient was used; percentage agreement was used for all other questions. Criterion validity was excellent ⁄ good for all questions with a prevalence between 5 and 95%, except for the question 'Do you have kidney disease?' For questions with prevalence < 5%, all demonstrated adequate criterion validity except the questions 'Has anyone in your family had a problem following an anaesthetic?' and 'If you have been put to sleep for an operation were there any anaesthetic problems?' Therefore, it is reasonable for nurses to use this questionnaire to determine which patients an anaesthetist should see before the day of surgery.Keywords Anaesthesia; pre-operative, assessment, questionnaire. Recent advances in anaesthetic and surgical practice have facilitated the growth of 'fast track' surgery [1, 2]. Careful outpatient assessment is fundamental to the success of this type of surgery and the Association of Anaesthetists of Great Britain and Ireland now recommends assessment at a pre-operative assessment (POA) clinic [3].The provision of a pre-operative screening and assessment service at POA clinics supplies background information about patient's general medical status and fitness for anaesthesia. POA clinics improve patient care by allowing careful pre-operative evaluation and optimisation of coexisting disease [4], reduce costs [5, 6], improve efficiency [7], and lower surgical cancellation rates [8, 9].In POA clinics, nurses increasingly carry out preoperative screening [10]. Although they are not qualified to decide if a patient is fit for anaesthesia, they play a valuable role in identifying patients who are at risk and require further evaluation and optimisation before the day of surgery [11]. Nurses screen patients for risk factors for fitness for anaesthesia and surgery using questionnaires [12]. These can be self-administered by the patient [9], or used during structured interviews [13], or computer programs [14]. Although many locally developed questionnaires exist, few have been formally assessed.We have developed a multi-tiered screening questionnaire to be used by nurses to decide which patients should be seen at a POA clinic by an anaesthetist for further evaluation and optimisation. Using Delphi consensus methods, we have already evaluated content validity for each question [15] to ensure that the questions are relevant to concept being measured.Our objective was to perform item analysis of the screening questionnaire and measure criterion validity [16], that is, is it a true measure of what it is designed to measure?By testing individual questions beyond basic content validity, we were able to put them together in a...

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“…Karanko et al . reported approximately 9% decrease in activity over 2 h due to plasma leak [15]. Consequently, the plasma volume may be overestimated.…”

Section: Discussionmentioning

confidence: 99%

Effects of hypertonic saline (7.5%) on extracellular fluid volumes in healthy volunteers

Järvelä¹,

Koskinen²,

Kööbi³

2003

Anaesthesia

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“…In spite of a total positive fluid balance after surgery, reduction of 5.5% to 7.5% circulating blood volume is observed. 7,8 There is still no general agreement what kind of solutions (containing crystalloids and/or colloids) should be used and what amount of solution is optimal.Restoration of circulating blood volume with a small infused volume is a new trend in infusion therapy that has been developed during the last ten years. 9,10 One of the main effects of the complex hypertonic solution of NaCl (4 mg/kg) is hydration of the intravascular space due to a rapid cellular fluid percolation into the extracellular space.…”

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confidence: 99%

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Hypertonic hydroxyethyl starch solution for hypovolaemia correction following heart surgery

et al. 2007

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Clinical pharmacokinetics and pharmacodynamics of colloidal plasma volume expanders

Quon

1988

Journal of Cardiothoracic Anesthesia

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Measurement of sequential changes in plasma volume immediately after aortocoronary bypass surgery

Cited by 6 publications

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Effects of hypertonic saline (7.5%) on extracellular fluid volumes in healthy volunteers

Effects of hypertonic saline (7.5%) on extracellular fluid volumes in healthy volunteers

Hypertonic hydroxyethyl starch solution for hypovolaemia correction following heart surgery

Clinical pharmacokinetics and pharmacodynamics of colloidal plasma volume expanders

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