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Volume Kinetics for Starch Solution and Acetated Ringers

2014年10月16日 更新者：Joachim Zdolsek、University Hospital, Linkoeping
Volume kinetics is a method mostly used, so far, to study the distribution and elimination of crystalloid solutions. Voluven (in Sweden the most commonly used colloid for replacement of bleeding during surgery) is poorly studied, though. Also, a recent study showed unexpected volume kinetics for a crystalloid solution when it was given after a colloid solution. The investigators aim to study the volume kinetics of crystalloids and colloids and also the combination of the two in more detail. The investigators will also compare the invasive hemoglobin measurements with measurements from a new non-invasive tool (Radical 7, from Masimo Inc.) which could help to make volume kinetics more practical for everyday use. Finally the investigators will also study the concentrations of a few coagulation factors to see if they can explain the variations in coagulability that has been described in earlier studies of infusion solutions.

調査の概要

状態

完了

条件

介入・治療

詳細な説明

We will study ten volunteers, each one on three occasions. Each volunteer will receive only crystalloid one time, only colloid another time, and on the third occasion first a colloid and then a crystalloid one hour later. The different protocols will be in random order in the different volunteers. During all these tests we will sample the hemoglobin (both invasive and non-invasive) every fifth minute in the beginning (every tenth minute later) after the infusion. On six to nine occasions during each test we will analyse Albumin, Cystatin-C, Ig-G, Ig-M as markers of hemodilution and D-Dimer, Fibrinogen, Factor VII, PK-INR (prothrombin complex international normalized ratio), and aPTT (activated partial thromboplastin time) as markers of coagulation. The volunteers are also monitored regarding non-invasive blood pressure and pulse rate.

研究の種類

介入

入学 (実際)

10

段階

  • 適用できない

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究場所

  • スウェーデン
      • Linköping、スウェーデン、581 85
        • University Hospital, Intensive care unit

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

18年～50年 (大人)

健康ボランティアの受け入れ

はい

受講資格のある性別

男

説明

Inclusion Criteria: healthy males between 20 and 50 years were advertised for. Males due to simplified urine collection during supine position.

Exclusion Criteria:

under age < 18 years

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか？

デザインの詳細

  • 主な目的：処理
  • 割り当て：ランダム化
  • 介入モデル：クロスオーバー割り当て
  • マスキング：なし（オープンラベル）

武器と介入

参加者グループ / アーム
介入・治療
他の：A.acetatedRingers, B.colloid & C.colloid+acetatedRingers

First intervention: A. acetated Ringers 20 ml/kg bodyweight during 30 minutes followed by 150 minutes of equilibration, when blood samples were collected.

Washout >7 days

Second intervention: B. Voluven 6 % (starch solution) 10 ml/kg bodyweight during 30 minutes followed by 390 minutes of equilibration and blood samples.

Washout > 7 Days

Third intervention: C. Voluven 6 % (starch solution) 10 ml/kg bodyweight during 30 minutes followed 90 minutes later by acetated Ringers 20 ml/kg bodyweight during 30 minutes. thereafter the subjects stayed for Another 285 minutes of equilibration and blood samples.
薬：acetated Ringers
Infusion of Ringer acetate 20 ml/kg over 30 min
薬：colloid
Infusion of starch 10 ml/kg over 30 min
他の名前：
  • ボルベン
薬：colloid+acetated Ringer
Infusion of combined colloid+acetated Ringer; 10 ml/kg of starch was infused between 0 and 30 min, followed by 20 ml/kg of Ringers acetate between 105 and 135 min.
他の名前：
  • ボルベン
  • acetated Ringers
デバイス：Non-invasive hemoglobin with pulse-oximeter (SpHb)
Non-invasive hemoglobin with pulse-oximeter (SpHb) was measured in all subjects, during all infusions.
他の名前：
  • Radical 7, Masimo
他の：A.colloid, B.colloid+acetatedRinger & C.acetatedRingers

First intervention: A. Voluven 6 % (starch solution) 10 ml/kg bodyweight during 30 minutes followed by 390 minutes of equilibration and blood samples.

Washout >7 days

Second intervention: B. Voluven 6 % (starch solution) 10 ml/kg bodyweight during 30 minutes followed 90 minutes later by acetated Ringers 20 ml/kg bodyweight during 30 minutes. thereafter the subjects stayed for Another 285 minutes of equilibration and blood samples.

Washout > 7 Days

Third intervention: C. acetated Ringers 20 ml/kg bodyweight during 30 minutes followed by150 minutes of equilibration, when blood samples were collected.
薬：acetated Ringers
Infusion of Ringer acetate 20 ml/kg over 30 min
薬：colloid
Infusion of starch 10 ml/kg over 30 min
他の名前：
  • ボルベン
薬：colloid+acetated Ringer
Infusion of combined colloid+acetated Ringer; 10 ml/kg of starch was infused between 0 and 30 min, followed by 20 ml/kg of Ringers acetate between 105 and 135 min.
他の名前：
  • ボルベン
  • acetated Ringers
デバイス：Non-invasive hemoglobin with pulse-oximeter (SpHb)
Non-invasive hemoglobin with pulse-oximeter (SpHb) was measured in all subjects, during all infusions.
他の名前：
  • Radical 7, Masimo
他の：A.acetatedRingers, B.acetatedRingers+colloid & C.colloid

First intervention: A. acetated Ringers 20 ml/kg bodyweight during 30 minutes followed by150 minutes of equilibration, when blood samples were collected.

Washout >7 days

Second intervention: B.Voluven 6 % (starch solution) 10 ml/kg bodyweight during 30 minutes followed 90 minutes later by acetated Ringers 20 ml/kg bodyweight during 30 minutes. thereafter the subjects stayed for Another 285 minutes of equilibration and blood samples.

Washout > 7 Days

Third intervention: C. Voluven 6 % (starch solution) 10 ml/kg bodyweight during 30 minutes followed by 390 minutes of equilibration and blood samples.
薬：acetated Ringers
Infusion of Ringer acetate 20 ml/kg over 30 min
薬：colloid
Infusion of starch 10 ml/kg over 30 min
他の名前：
  • ボルベン
薬：colloid+acetated Ringer
Infusion of combined colloid+acetated Ringer; 10 ml/kg of starch was infused between 0 and 30 min, followed by 20 ml/kg of Ringers acetate between 105 and 135 min.
他の名前：
  • ボルベン
  • acetated Ringers
デバイス：Non-invasive hemoglobin with pulse-oximeter (SpHb)
Non-invasive hemoglobin with pulse-oximeter (SpHb) was measured in all subjects, during all infusions.
他の名前：
  • Radical 7, Masimo
他の：A.colloid, B.acetatedRingers & C.colloid+acetatedRingers

First intervention: A. Voluven 6 % (starch solution) 10 ml/kg bodyweight during 30 minutes followed by 390 minutes of equilibration and blood samples.acetated Ringers 20 ml/kg bodyweight during 30 minutes followed by150 minutes of equilibration, when blood samples were collected.

Washout >7 days

Second intervention: B. acetated Ringers 20 ml/kg bodyweight during 30 minutes followed by150 minutes of equilibration, when blood samples were collected.

Washout > 7 Days

Third intervention: C. Voluven 6 % (starch solution) 10 ml/kg bodyweight during 30 minutes followed 90 minutes later by acetated Ringers 20 ml/kg bodyweight during 30 minutes. thereafter the subjects stayed for Another 285 minutes of equilibration and blood samples.
薬：acetated Ringers
Infusion of Ringer acetate 20 ml/kg over 30 min
薬：colloid
Infusion of starch 10 ml/kg over 30 min
他の名前：
  • ボルベン
薬：colloid+acetated Ringer
Infusion of combined colloid+acetated Ringer; 10 ml/kg of starch was infused between 0 and 30 min, followed by 20 ml/kg of Ringers acetate between 105 and 135 min.
他の名前：
  • ボルベン
  • acetated Ringers
デバイス：Non-invasive hemoglobin with pulse-oximeter (SpHb)
Non-invasive hemoglobin with pulse-oximeter (SpHb) was measured in all subjects, during all infusions.
他の名前：
  • Radical 7, Masimo
他の：A.colloid+acetatedRingers, B.colloid & C.acetated Ringers

First intervention: A. Voluven 6 % (starch solution) 10 ml/kg bodyweight during 30 minutes followed 90 minutes later by acetated Ringers 20 ml/kg bodyweight during 30 minutes. thereafter the subjects stayed for Another 285 minutes of equilibration and blood samples.

Washout >7 days

Second intervention: B. Voluven 6 % (starch solution) 10 ml/kg bodyweight during 30 minutes followed by 390 minutes of equilibration and blood samples.

Washout > 7 Days

Third intervention: C. acetated Ringers 20 ml/kg bodyweight during 30 minutes followed by150 minutes of equilibration, when blood samples were collected.
薬：acetated Ringers
Infusion of Ringer acetate 20 ml/kg over 30 min
薬：colloid
Infusion of starch 10 ml/kg over 30 min
他の名前：
  • ボルベン
薬：colloid+acetated Ringer
Infusion of combined colloid+acetated Ringer; 10 ml/kg of starch was infused between 0 and 30 min, followed by 20 ml/kg of Ringers acetate between 105 and 135 min.
他の名前：
  • ボルベン
  • acetated Ringers
デバイス：Non-invasive hemoglobin with pulse-oximeter (SpHb)
Non-invasive hemoglobin with pulse-oximeter (SpHb) was measured in all subjects, during all infusions.
他の名前：
  • Radical 7, Masimo

この研究は何を測定していますか？

主要な結果の測定

結果測定
メジャーの説明
時間枠
Volume Effects for Hydroxyethyl Starch, Ringer's Solution or a Combination of Both.
時間枠：420 minutes

volume kinetics: mathematical calculation from hemoglobin variations during and after an infusion.

Degree of plasma dilution depending on which solution(s) and how much solution is/are given.
420 minutes
Elimination Half Life for Different Fluids Alone or When Combined
時間枠：420 minutes
Volume kinetic analyses of the dilution of hemoglobin for different infusion fluids alone or in combination.
420 minutes

二次結果の測定

結果測定
メジャーの説明
時間枠
Accuracy of Non-invasive Hemoglobin Monitoring for Different Fluids
時間枠：420 min

Pulse-oximeter based measurements compared with invasive hemoglobin measurements. All paired in the study.

Accuracy depending on which infusion is selected (Ringer's, Hydroxyethyl starch or a combination of both).
420 min
Accuracy of Noninvasive Haemoglobin Measurement by Pulse Oximetry, for Different Fluids (Start to End of Infusion)
時間枠：30 min

Difference between true hemoglobin B-Hb and measured hemoglobin with pulseoximeter (SpHb)at the end of an infusion in relation to the initial measured values SpHb and B-Hb at the start of the infusion.

Relative difference (%) = (SpHb - Hb)/((Hb+SpHb)/2) x 100
30 min
Variation of Coagulation Factors and Plasma Proteins During and After Infusion of Crystalloid and Colloid Solutions.
時間枠：420 minutes
The investigators will measure a few markers of coagulation (fibrinogen, thrombocytes, D-Dimer, PK-INR, aPTT, and coagulation factor VII) as well as Cystatin C, serum albumine and hemoglobin and how the concentration of these vary with the different dilutions of blood during and after infusion of a colloid and/or a crystalloid solution.
420 minutes

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

University Hospital, Linkoeping

捜査官

  • 主任研究者：Joachim Zdolsek, MD, PhD、University Hospital, Linköping, Sweden

出版物と役立つリンク

研究に関する情報を入力する責任者は、自発的にこれらの出版物を提供します。これらは、研究に関連するあらゆるものに関するものである可能性があります。

一般刊行物

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始

2010年8月1日

一次修了 (実際)

2011年5月1日

研究の完了 (実際)

2011年5月1日

試験登録日

最初に提出

2010年8月31日

QC基準を満たした最初の提出物

2010年9月2日

最初の投稿 (見積もり)

2010年9月3日

学習記録の更新

投稿された最後の更新 (見積もり)

2014年10月22日

QC基準を満たした最後の更新が送信されました

2014年10月16日

最終確認日

2014年10月1日

詳しくは

本研究に関する用語

キーワード

追加の関連 MeSH 用語

その他の研究ID番号

  • VkVR

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