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Safety of Continuous Potassium Chloride Infusion in Critical Care (ASPIC)

This study has been completed.
Information provided by:
The Queen Elizabeth Hospital Identifier:
First received: July 16, 2008
Last updated: July 26, 2010
Last verified: November 2009
Patients in critical care often require supplemental potassium chloride if levels in their blood are below acceptable level. Common practice is to administer a single dose of potassium chloride under controlled conditions via a drip, before checking if a further dose is required. The purpose of this study is to ensure that it is safe to administer potassium chloride continuously with the dose varied according to patient needs.

Condition Intervention Phase
Arrhythmias, Cardiac
Drug: Sterile Potassium Chloride Concentrate
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Assessing the Safety of a Continuous Potassium Chloride Infusion in Critical Care: A Randomised Controlled Trial

Resource links provided by NLM:

Further study details as provided by The Queen Elizabeth Hospital:

Primary Outcome Measures:
  • Adherence to a potassium level 4.0 - 4.5mmol/L [ Time Frame: 7 days ]

Secondary Outcome Measures:
  • Total quantity of potassium administered [ Time Frame: 7 days ]
  • Incidence of potassium level < 3.0mmol/L and > 5.5mmol/L [ Time Frame: 7 days ]
  • Incidence of arrhythmia [ Time Frame: 7 days ]
  • Number of arterial blood gases taken [ Time Frame: 7 days ]

Enrollment: 160
Study Start Date: October 2008
Study Completion Date: October 2009
Primary Completion Date: September 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Continuous
This group will receive potassium chloride by continuous infusion on a sliding-scale system based on serum potassium level.
Drug: Sterile Potassium Chloride Concentrate
Continuous infusion, 40mmol in 40ml, starting at 10ml/hr, rate altered according to serum potassium level checked 2 hourly
Other Name: CAS no: 7447-40-7
Active Comparator: Intermittent
This arm will form the control group and receive potassium chloride by intermittent infusion as per conventional management
Drug: Sterile Potassium Chloride Concentrate
By intermittent infusion, 20mmol diluted in 100ml 0.9% NaCl, administered over 60 mins, serum potassium level checked 2 hourly, and repeat doses administered as appropriate
Other Name: CAS no: 7447-40-7

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Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Any inpatient on the investigating unit with a serum potassium level of less than 3.8mmol/L
  • arterial line for blood sampling and central venous access for infusion administration in situ
  • continuous 12-lead ECG monitoring

Exclusion Criteria:

  • Patients with a serum potassium ≥ 3.8mmol/L
  • Renal dysfunction with serum creatinine 50% greater than the upper end of the normal reference range (i.e.: > 180micromol/L) or urine output less than 0.5ml/kg/hr for 6 consecutive hours, or the requirement for dialysis
  • Burns
  • Hypomagnesaemia (≤ 0.7mmol/L), however patients may be enrolled after the hypomagnesaemia is corrected
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Please refer to this study by its identifier: NCT00718068

Australia, South Australia
The Queen Elizabeth Hospital
Woodville South, South Australia, Australia, 5011
Sponsors and Collaborators
The Queen Elizabeth Hospital
Principal Investigator: Richard Chalwin, FCICM The Queen Elizabeth Hospital
  More Information

Responsible Party: Dr Richard Chalwin, The Queen Elizabeth Hospital Identifier: NCT00718068     History of Changes
Other Study ID Numbers: 2007185
Study First Received: July 16, 2008
Last Updated: July 26, 2010

Keywords provided by The Queen Elizabeth Hospital:
Potassium chloride
Preparations, Pharmaceutical
Critical Care
Randomized Controlled Trial

Additional relevant MeSH terms:
Arrhythmias, Cardiac
Potassium Deficiency
Heart Diseases
Cardiovascular Diseases
Pathologic Processes
Water-Electrolyte Imbalance
Metabolic Diseases
Deficiency Diseases
Nutrition Disorders processed this record on April 27, 2017