E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
This study aims to investigate a new crystalloid fluid therapy regime for the perioperative setting providing stable fluid and acid-base homeostasis in the patient. |
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E.1.1.1 | Medical condition in easily understood language |
We aim to investigate a new fluid therapy for the patient undergoing surgery in the operating theatre. |
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E.1.1.2 | Therapeutic area | Analytical, Diagnostic and Therapeutic Techniques and Equipment [E] - Anesthesia and Analgesia [E03] |
MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
An aedequate perioperative fluid therapy should be capable of replacing fluid (such as urinary output and insensible perspiration) and limited blood losses without disturbing fluid and acid-base homeostasis within the human body. With the use of state of the art crystalloids preparations we often observe the onset of a hyperchloremic acidosis with all its negative consequences like the reduction of renal function, among others. Our hypothesis is based on the Stewart model of acid-base balance where albumin and phosphate, referred to as weak acids (A-), are capable of regulating the pH. Adding sodium glycerophosphate to an established crystalloid preparation, our main objective is to stabilize the level of A- in the patient in order to maintain constant acid-base conditions. |
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E.2.2 | Secondary objectives of the trial |
Secondary objectives of the trial are :
the effects of the crystalloid preparation on
-The onset and severity of postoperative nausea and vomiting (PONV)
-Other Stewart acid-base parameters
-Electrolyte levels and their excretion in the urine
-Hemodynamics
-Amounts of catecholamines and vasopressors used
and the safety of the infusion regime
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
• only female patients who have given their informed consent
• ASA I-III classified female patients, who are scheduled for an extended abdominal surgical procedure under general anesthesia with routinely planned placement of a central venous and arterial catheter
• age ≥ 18 years
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E.4 | Principal exclusion criteria |
•participation in another clinical trial
•patients who are not personally able to giver their informed consent
•patients at a childbearing age without using contraceptives
• acute or chronic renal failiure (glomerular filtration rate <60ml/min)
• patients suffering from acid-base-dysregulation (i.e. severe acidosis, sepsis, SIRS)
• pregnancy or lactation period (pregnancy testing will be executed on the ward at least one day prior to the surgical procedure)
• edema, hypertonic dehydratation, hyperhidratation
• hyperphosphatemia, hypernatremia,hypocalcemia
• known hypersensitivity against IMPs and/or other components
• known history or active abuse of alcohol and/or drugs
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E.5 End points |
E.5.1 | Primary end point(s) |
Calculation of the week acids concentration (A-) according to the Stewart approach of acid-base balance:
A- = albumin x (0.123 x pH – 0.631) + phosphate x (0.309 x pH - 0.469) |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Calculation takes place after measurement of pH, serum phosphate and albumin during distinct timepoints (every 30 minutes until 120 minutes after the induction of anesthesia) |
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E.5.2 | Secondary end point(s) |
1) analysis of serum phosphate levels
2) analysis of acid-base parameters: pH, paCO2, HCO3-, BE, anion gap
3) analysis of Strong Ion Difference (SID), Effective Strong Ion Difference, Strong Ion Gap, albumin, lactate
4) serum and urine analysis of electrolytes
5) documentation of blood pressure, heart frequency, demand of catecholamines and vasopressors, variation in stroke volume and cardiac output
6)analysis of creatinine and urea as well as calculation of glomeraular filtration rate
7) analysis of glykokalix components (hyaluronic acid, syndecan-1)
8) evaluation and documentation of postoperative nausea and vomiting
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
1)-5) starting after induction of anesthesia (T1) on the day of the surgical procedure until 120min after T1
6) one day prior to the surgical procedure as well as on day 3
7) T1 -T5
8) at the end of the surgical procedure as well as on day 1 and 3 after surgery |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | Yes |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | Yes |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Yes |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | Yes |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | |
E.8.9.1 | In the Member State concerned days | |