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2025 PACUPrep BCCCP Preparatory Course

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  1. Pulmonary

    ARDS
    4 Topics
    |
    1 Quiz
  2. Asthma Exacerbation
    4 Topics
    |
    1 Quiz
  3. COPD Exacerbation
    4 Topics
    |
    1 Quiz
  4. Cystic Fibrosis
    6 Topics
    |
    1 Quiz
  5. Drug-Induced Pulmonary Diseases
    3 Topics
    |
    1 Quiz
  6. Mechanical Ventilation Pharmacotherapy
    5 Topics
    |
    1 Quiz
  7. Pleural Disorders
    5 Topics
    |
    1 Quiz
  8. Pulmonary Hypertension (Acute and Chronic severe pulmonary hypertension)
    5 Topics
    |
    1 Quiz
  9. Cardiology
    Acute Coronary Syndromes
    6 Topics
    |
    1 Quiz
  10. Atrial Fibrillation and Flutter
    6 Topics
    |
    1 Quiz
  11. Cardiogenic Shock
    4 Topics
    |
    1 Quiz
  12. Heart Failure
    7 Topics
    |
    1 Quiz
  13. Hypertensive Crises
    5 Topics
    |
    1 Quiz
  14. Ventricular Arrhythmias and Sudden Cardiac Death Prevention
    5 Topics
    |
    1 Quiz
  15. NEPHROLOGY
    Acute Kidney Injury (AKI)
    5 Topics
    |
    1 Quiz
  16. Contrast‐Induced Nephropathy
    5 Topics
    |
    1 Quiz
  17. Drug‐Induced Kidney Diseases
    5 Topics
    |
    1 Quiz
  18. Rhabdomyolysis
    5 Topics
    |
    1 Quiz
  19. Syndrome of Inappropriate Antidiuretic Hormone (SIADH)
    5 Topics
    |
    1 Quiz
  20. Renal Replacement Therapies (RRT)
    5 Topics
    |
    1 Quiz
  21. Neurology
    Status Epilepticus
    5 Topics
    |
    1 Quiz
  22. Acute Ischemic Stroke
    5 Topics
    |
    1 Quiz
  23. Subarachnoid Hemorrhage
    5 Topics
    |
    1 Quiz
  24. Spontaneous Intracerebral Hemorrhage
    5 Topics
    |
    1 Quiz
  25. Neuromonitoring Techniques
    5 Topics
    |
    1 Quiz
  26. Gastroenterology
    Acute Upper Gastrointestinal Bleeding
    5 Topics
    |
    1 Quiz
  27. Acute Lower Gastrointestinal Bleeding
    5 Topics
    |
    1 Quiz
  28. Acute Pancreatitis
    5 Topics
    |
    1 Quiz
  29. Enterocutaneous and Enteroatmospheric Fistulas
    5 Topics
    |
    1 Quiz
  30. Ileus and Acute Intestinal Pseudo-obstruction
    5 Topics
    |
    1 Quiz
  31. Abdominal Compartment Syndrome
    5 Topics
    |
    1 Quiz
  32. Hepatology
    Acute Liver Failure
    5 Topics
    |
    1 Quiz
  33. Portal Hypertension & Variceal Hemorrhage
    5 Topics
    |
    1 Quiz
  34. Hepatic Encephalopathy
    5 Topics
    |
    1 Quiz
  35. Ascites & Spontaneous Bacterial Peritonitis
    5 Topics
    |
    1 Quiz
  36. Hepatorenal Syndrome
    5 Topics
    |
    1 Quiz
  37. Drug-Induced Liver Injury
    5 Topics
    |
    1 Quiz
  38. Dermatology
    Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis
    5 Topics
    |
    1 Quiz
  39. Erythema multiforme
    5 Topics
    |
    1 Quiz
  40. Drug Reaction (or Rash) with Eosinophilia and Systemic Symptoms (DRESS)
    5 Topics
    |
    1 Quiz
  41. Immunology
    Transplant Immunology & Acute Rejection
    5 Topics
    |
    1 Quiz
  42. Solid Organ & Hematopoietic Transplant Pharmacotherapy
    5 Topics
    |
    1 Quiz
  43. Graft-Versus-Host Disease (GVHD)
    5 Topics
    |
    1 Quiz
  44. Hypersensitivity Reactions & Desensitization
    5 Topics
    |
    1 Quiz
  45. Biologic Immunotherapies & Cytokine Release Syndrome
    5 Topics
    |
    1 Quiz
  46. Endocrinology
    Relative Adrenal Insufficiency and Stress-Dose Steroid Therapy
    5 Topics
    |
    1 Quiz
  47. Hyperglycemic Crisis (DKA & HHS)
    5 Topics
    |
    1 Quiz
  48. Glycemic Control in the ICU
    5 Topics
    |
    1 Quiz
  49. Thyroid Emergencies: Thyroid Storm & Myxedema Coma
    5 Topics
    |
    1 Quiz
  50. Hematology
    Acute Venous Thromboembolism
    5 Topics
    |
    1 Quiz
  51. Drug-Induced Thrombocytopenia
    5 Topics
    |
    1 Quiz
  52. Anemia of Critical Illness
    5 Topics
    |
    1 Quiz
  53. Drug-Induced Hematologic Disorders
    5 Topics
    |
    1 Quiz
  54. Sickle Cell Crisis in the ICU
    5 Topics
    |
    1 Quiz
  55. Methemoglobinemia & Dyshemoglobinemias
    5 Topics
    |
    1 Quiz
  56. Toxicology
    Toxidrome Recognition and Initial Management
    5 Topics
    |
    1 Quiz
  57. Management of Acute Overdoses – Non-Cardiovascular Agents
    5 Topics
    |
    1 Quiz
  58. Management of Acute Overdoses – Cardiovascular Agents
    5 Topics
    |
    1 Quiz
  59. Toxic Alcohols and Small-Molecule Poisons
    5 Topics
    |
    1 Quiz
  60. Antidotes and Gastrointestinal Decontamination
    5 Topics
    |
    1 Quiz
  61. Extracorporeal Removal Techniques
    5 Topics
    |
    1 Quiz
  62. Withdrawal Syndromes in the ICU
    5 Topics
    |
    1 Quiz
  63. Infectious Diseases
    Sepsis and Septic Shock
    5 Topics
    |
    1 Quiz
  64. Pneumonia (CAP, HAP, VAP)
    5 Topics
    |
    1 Quiz
  65. Endocarditis
    5 Topics
    |
    1 Quiz
  66. CNS Infections
    5 Topics
    |
    1 Quiz
  67. Complicated Intra-abdominal Infections
    5 Topics
    |
    1 Quiz
  68. Antibiotic Stewardship & PK/PD
    5 Topics
    |
    1 Quiz
  69. Clostridioides difficile Infection
    5 Topics
    |
    1 Quiz
  70. Febrile Neutropenia & Immunocompromised Hosts
    5 Topics
    |
    1 Quiz
  71. Skin & Soft-Tissue Infections / Acute Osteomyelitis
    5 Topics
    |
    1 Quiz
  72. Urinary Tract and Catheter-related Infections
    5 Topics
    |
    1 Quiz
  73. Pandemic & Emerging Viral Infections
    5 Topics
    |
    1 Quiz
  74. Supportive Care (Pain, Agitation, Delirium, Immobility, Sleep)
    Pain Assessment and Analgesic Management
    5 Topics
    |
    1 Quiz
  75. Sedation and Agitation Management
    5 Topics
    |
    1 Quiz
  76. Delirium Prevention and Treatment
    5 Topics
    |
    1 Quiz
  77. Sleep Disturbance Management
    5 Topics
    |
    1 Quiz
  78. Immobility and Early Mobilization
    5 Topics
    |
    1 Quiz
  79. Oncologic Emergencies
    5 Topics
    |
    1 Quiz
  80. End-of-Life Care & Palliative Care
    Goals of Care & Advance Care Planning
    5 Topics
    |
    1 Quiz
  81. Pain Management & Opioid Therapy
    5 Topics
    |
    1 Quiz
  82. Dyspnea & Respiratory Symptom Management
    5 Topics
    |
    1 Quiz
  83. Sedation & Palliative Sedation
    5 Topics
    |
    1 Quiz
  84. Delirium Agitation & Anxiety
    5 Topics
    |
    1 Quiz
  85. Nausea, Vomiting & Gastrointestinal Symptoms
    5 Topics
    |
    1 Quiz
  86. Management of Secretions (Death Rattle)
    5 Topics
    |
    1 Quiz
  87. Fluids, Electrolytes, and Nutrition Management
    Intravenous Fluid Therapy and Resuscitation
    5 Topics
    |
    1 Quiz
  88. Acid–Base Disorders
    5 Topics
    |
    1 Quiz
  89. Sodium Homeostasis and Dysnatremias
    5 Topics
    |
    1 Quiz
  90. Potassium Disorders
    5 Topics
    |
    1 Quiz
  91. Calcium and Magnesium Abnormalities
    5 Topics
    |
    1 Quiz
  92. Phosphate and Trace Electrolyte Management
    5 Topics
    |
    1 Quiz
  93. Enteral Nutrition Support
    5 Topics
    |
    1 Quiz
  94. Parenteral Nutrition Support
    5 Topics
    |
    1 Quiz
  95. Refeeding Syndrome and Specialized Nutrition
    5 Topics
    |
    1 Quiz
  96. Trauma and Burns
    Initial Resuscitation and Fluid Management in Trauma
    5 Topics
    |
    1 Quiz
  97. Hemorrhagic Shock, Massive Transfusion, and Trauma‐Induced Coagulopathy
    5 Topics
    |
    1 Quiz
  98. Burns Pharmacotherapy
    5 Topics
    |
    1 Quiz
  99. Burn Wound Care
    5 Topics
    |
    1 Quiz
  100. Open Fracture Antibiotics
    5 Topics
    |
    1 Quiz

Participants 432

  • Allison Clemens
  • April
  • ababaabhay
  • achoi2392
  • adhoward1
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Lesson 91, Topic 5
In Progress

Recovery, Transition of Care, and Long-Term Management of Calcium and Magnesium Abnormalities

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Recovery, Transition of Care, and Long-Term Management of Calcium and Magnesium Abnormalities

Recovery, Transition of Care, and Long-Term Management of Calcium and Magnesium Abnormalities

Objectives Icon A checkmark inside a circle, symbolizing achieved goals.

Learning Objective

Develop and implement a structured plan for weaning intravenous calcium and magnesium therapies, transitioning to enteral supplementation, mitigating Post-ICU Syndrome, and ensuring continuity through medication reconciliation and discharge planning.

1. De-escalation and Weaning Protocols

As critically ill patients stabilize, maintaining electrolyte balance and preventing recurrence requires systematic de-escalation of IV therapies. Gradual tapering of IV calcium and magnesium infusions prevents rebound disturbances, reduces line-associated risks, and aligns therapy with patient recovery.

Pearl Icon A shield with an exclamation mark, indicating a clinical pearl. Key Clinical Pearls Expand/Collapse Icon
  • Confirm sustained normocalcemia (ionized Ca 1.12–1.32 mmol/L) and normomagnesemia (Mg 0.7–1.1 mmol/L) over 24–48 hours before weaning.
  • Always correct hypomagnesemia before tapering calcium to avoid PTH receptor resistance and rebound hypocalcemia.
  • Multidisciplinary coordination (pharmacy, nephrology, ICU) ensures consensus on taper schedules and monitoring.

Clinical Criteria for Weaning

  • Stable serum levels on two consecutive measurements 12–24 hours apart.
  • Resolution of neuromuscular symptoms (tetany, cramps) and arrhythmias.
  • Hemodynamic stability without increasing vasopressor support.
  • Adequate renal function or CRRT parameters accounted for in dose calculations.

Stepwise Dose Reduction

A structured approach to tapering prevents abrupt changes in electrolyte levels. This often involves switching from continuous infusions to scheduled intermittent boluses, guided by frequent lab monitoring.

IV Electrolyte Weaning Protocol A flowchart showing the process for weaning IV calcium or magnesium. It starts with confirming stability, then switching from infusion to intermittent boluses, monitoring labs, and adjusting the dose based on whether levels are within the target range or not. IV Electrolyte Weaning Flowchart 1. Confirm StabilityNormocalcemia/Normomagnesemia for 24-48h 2. Convert to Intermittent Boluse.g., Ca Gluconate 1-2g q4-6h; MgSO4 1-2g q6-12h 3. Monitor LabsAre levels in target range? No (Low) Yes (Stable) Continue Taper Escalate/Resume
Figure 1: Weaning Protocol. A structured, lab-driven protocol for tapering IV electrolyte infusions. This process involves confirming patient stability, switching from continuous to intermittent dosing, and adjusting therapy based on frequent monitoring to ensure safety.

Case Vignette: A 60-year-old with stabilized Mg 0.9 mmol/L and ionized Ca 1.25 mmol/L for 48 h on CRRT begins calcium gluconate taper: the continuous infusion is stopped and 1 g IV push q6h is initiated with daily labs and pre-defined escalation thresholds.

2. Conversion from IV to Enteral Electrolyte Delivery

Enteral supplementation preserves gut integrity, lowers infection risk, and facilitates step-down care. The choice of enteral access device and specific electrolyte formulation are critical factors that dictate absorption and patient tolerance.

Pearl IconA shield with an exclamation mark, indicating a clinical pearl. Key Clinical Pearls Expand/Collapse Icon
  • Choose a nasogastric (NG) tube for short-term (<4 weeks) vs. a percutaneous endoscopic gastrostomy (PEG) tube for long-term enteral access.
  • Flush tubes with 20–30 mL of water before and after each dose to prevent occlusion.
  • Separate dose administration from enteral feeds by at least 1 hour to reduce chelation and optimize absorption.

Enteral Formulation and Dosing

The bioavailability and elemental content vary significantly between different salt forms of calcium and magnesium. Choosing the right formulation is key to effective repletion and minimizing side effects.

Comparison of Common Enteral Calcium and Magnesium Formulations
Formulation Elemental Content Typical Dose (Elemental) Clinical Considerations
Calcium Carbonate 40% 250–500 mg q6h Requires acidic environment for absorption; best taken with meals. Less ideal for patients on PPIs.
Calcium Citrate 21% 500 mg q6h Absorption is independent of gastric acid. Preferred for patients on acid-suppressive therapy.
Magnesium Oxide 60% 200-400 mg q12h High elemental content but poor bioavailability and high risk of diarrhea. Often used for cost reasons.
Magnesium Citrate/Gluconate 10–15% 150–200 mg q8h Higher bioavailability and better GI tolerance than oxide. Often preferred for repletion.

Monitoring

  • Monitor serum Ca, Mg, and phosphorus weekly during titration, then monthly once stable.
  • Track GI tolerance and adjust formulation or dosing frequency if diarrhea or discomfort occurs.

3. Post-ICU Syndrome (PICS) Risk Mitigation

Prolonged critical illness can lead to long-term physical, cognitive, and psychological impairments known as Post-ICU Syndrome. Early recognition of risk factors and application of the ABCDEF bundle can preserve neuromuscular and cognitive function, reducing long-term morbidity.

Pearl IconA shield with an exclamation mark, indicating a clinical pearl. Key Clinical Pearls Expand/Collapse Icon
  • Hypomagnesemia is a significant risk factor for delirium, muscle weakness, and prolonged ventilation.
  • Early mobilization is only safe and effective when electrolyte levels are adequate to support normal muscle contractility.
  • Engaging the family in care planning and therapy sessions can enhance cognitive recovery and reduce patient anxiety.

Implementation of the ABCDEF Bundle

The ABCDEF bundle is a multidisciplinary, evidence-based strategy to improve outcomes for critically ill patients. Correcting electrolyte abnormalities is a prerequisite for the successful implementation of several components.

  • A
    Assess, Prevent, and Manage Pain: Adequate pain control is essential before attempting mobility.
  • B
    Both Spontaneous Awakening & Breathing Trials: Feasible only when electrolytes and hemodynamics permit.
  • C
    Choice of Analgesia and Sedation: Target light sedation to prevent delirium, which can be exacerbated by hypomagnesemia.
  • D
    Delirium: Assess, Prevent, and Manage: Use non-pharmacologic interventions and correct metabolic causes like electrolyte imbalances.
  • E
    Early Mobility and Exercise: Requires sufficient calcium and magnesium for muscle performance and to prevent cramping or weakness.
  • F
    Family Engagement and Empowerment: Involve family in care, providing education and support.

4. Medication Reconciliation and Discharge Planning

A seamless transition from inpatient to outpatient care is critical to prevent relapse and readmission. This involves aligning electrolyte regimens with outpatient needs, educating patients and caregivers, and coordinating follow-up.

Pearl IconA shield with an exclamation mark, indicating a clinical pearl. Key Clinical Pearls Expand/Collapse Icon
  • Reduce magnesium supplementation dose by approximately 25% for patients with an eGFR <30 mL/min to avoid toxic accumulation.
  • Use the “teach-back” method and provide clear written materials to reinforce dosing schedules and symptom recognition.
  • Standardized handoff templates (e.g., SBAR) improve the clarity and consistency of communication with outpatient teams.

Comprehensive Medication Review

  • Reconcile IV infusions to appropriate oral equivalents for calcium, magnesium, vitamin D, diuretics, and acid-suppressive agents.
  • Identify and adjust for medications that can cause electrolyte disturbances (e.g., proton pump inhibitors, loop and thiazide diuretics).
  • Verify current renal function (eGFR) and adjust all relevant medication doses accordingly before discharge.

Patient and Caregiver Education

  • Educate on key signs of imbalance: muscle cramps, paresthesias (tingling), palpitations, and confusion.
  • Provide nutritional guidance on dietary sources: dairy and fortified foods for calcium; nuts, seeds, and green leafy vegetables for magnesium.
  • Clarify the timing of supplement intake relative to meals and other medications (e.g., separate calcium from iron and thyroid hormones).

Coordination with Ambulatory Teams

  • Schedule follow-up labs (Ca, Mg, phosphorus, creatinine) within 1–2 weeks of discharge to ensure stability.
  • Ensure appropriate referrals are in place for primary care, nephrology, or endocrinology as indicated.
  • Share a concise discharge summary that includes lab trends, final inpatient dosing, and clear target ranges for outpatient management.

5. Quality Improvement and Follow-Up Metrics

Systematic tracking of process and outcome metrics is essential for refining protocols and enhancing patient safety. Ongoing audit and feedback loops drive continuous improvement in the care transition process.

Pearl IconA shield with an exclamation mark, indicating a clinical pearl. Key Clinical Pearls Expand/Collapse Icon
  • Rates of 30-day readmission and electrolyte abnormality recurrence are key indicators of a successful transition of care.
  • Using protocol adherence checklists for weaning and monitoring improves consistency and reduces errors.
  • Incorporating patient-reported outcomes (PROs) provides valuable perspective on functional recovery and overall quality of life post-discharge.

Tracking Readmission and Recurrence Rates

  • Stratify data by primary diagnosis, discharge electrolyte levels, and adherence to protocols to identify high-risk populations.
  • Analyze trends to target specific areas for improvement in patient education or process changes.

Protocol Adherence Audits and Outcome Measures

  • Monitor key process metrics: timely lab draws, appropriate dose adjustments, and comprehensive documentation of patient education.
  • Evaluate clinical outcomes, such as the incidence of rebound hypocalcemia or hypomagnesemia within 30 days of discharge.

Patient-Reported Outcome Monitoring

  • Use validated surveys (e.g., SF-36, EQ-5D) at 1 and 3 months post-discharge to assess symptom burden and functional status.
  • Incorporate patient feedback into iterative updates of transition protocols and educational materials.

References

  1. Bilezikian JP, et al. Management of Hypoparathyroidism: Present and Future. J Clin Endocrinol Metab. 2016;101(6):2313–2324.
  2. Dickerson RN. Fluids, Electrolytes, Acid-Base Disorders, and Nutrition Support. In: ACCP/SCCM Critical Care Pharmacy Preparatory Review and Recertification Course. 2016.
  3. Escobedo-Monge MF, Barrado E, Parodi-Román J, et al. Magnesium Status and Ca/Mg Ratios in a Series of Children and Adolescents with Chronic Diseases. Nutrients. 2022;14(14):2941.
  4. Liu RH, Chen Y, Chen Y, et al. Association of Hypocalcemia and Magnesium Disorders With Postoperative Outcomes: A Retrospective Cohort Study. JAMA Netw Open. 2020;3(1):e1919657.
  5. Marra A, Ely EW. The ABCDEF Bundle in Critical Care. Crit Care Clin. 2017;33(2):225–243.
  6. Society of Critical Care Medicine. ICU Liberation Bundle (A–F). 2018.
  7. Worthington J, Gura K, Kraft M, et al. Developing guidance for feeding tube administration of oral medications: A best practice paper from the American Society for Parenteral and Enteral Nutrition. JPEN J Parenter Enteral Nutr. 2023;47(4):519–540.