Rhabdomyolysis due to hyperosmolarity leading to acute renal failure

Hypernatremia in Hyperglycemia: Clinical Features and Relationship to Fractional Changes in Body Water and Monovalent Cations during Its Development

In hyperglycemia, the serum sodium concentration ([Na]S) receives influences from (a) the fluid exit from the intracellular compartment and thirst, which cause [Na]S decreases; (b) osmotic diuresis with sums of the urinary sodium plus potassium concentration lower than the baseline euglycemic [Na]S, which results in a [Na]S increase; and (c), in some cases, gains or losses of fluid, sodium, and potassium through the gastrointestinal tract, the respiratory tract, and the skin. Hyperglycemic patients with hypernatremia have large deficits of body water and usually hypovolemia and develop severe clinical manifestations and significant mortality. To assist with the correction of both the severe dehydration and the hypovolemia, we developed formulas computing the fractional losses of the body water and monovalent cations in hyperglycemia. The formulas estimate varying losses between patients with the same serum glucose concentration ([Glu]S) and [Na]S but with different sums of monovalent cation concentrations in the lost fluids. Among subjects with the same [Glu]S and [Na]S, those with higher monovalent cation concentrations in the fluids lost have higher fractional losses of body water. The sum of the monovalent cation concentrations in the lost fluids should be considered when computing the volume and composition of the fluid replacement for hyperglycemic syndromes.

Adipsic diabetes insipidus

Adipsic diabetes insipidus (ADI) is a rare but devastating disorder of water balance with significant associated morbidity and mortality. Most patients develop the disease as a result of hypothalamic destruction from a variety of underlying etiologies. Damage to osmolar-responsive neuroreceptors, primarily within the supraoptic and paraventricular nuclei, results in impaired production and release of arginine vasopressin (AVP). Important regulating circuits of thirst sense and drive are regionally colocalized with AVP centers and therefore are also injured. Patients with central diabetes insipidus with impaired thirst response, defined as ADI, suffer from wide swings of plasma osmolality resulting in repeated hospitalization, numerous associated comorbidities, and significant mortality. Treatment recommendations are based largely on expert advice from case series owing to the rarity of disease prevalence. Acute disease management focuses on fixed dosing of antidiuretic hormone analogues and calculated prescriptions of obligate daily water intake. Long-term care requires patient/family education, frequent reassessment of clinical and biochemical parameters, as well as screening and treatment of comorbidities.

Improvement in renal prognosis with prompt hemodialysis in hyperosmolar hyperglycemic state-related rhabdomyolysis: A case report

RATIONALE

Acute kidney injury is common and correctable in patients with a hyperosmolar hyperglycemic state (HHS). Nevertheless, hyperglycemic crisis may also contribute to the development of rhabdomyolysis, which can worsen renal function and lead to high mortality in such patients.

PATIENT CONCERNS

Herein, we report a case of hyperosmolar hyperglycemic state-related rhabdomyolysis and acute renal failure with an excellent outcome.

DIAGNOSIS

A 26-year-old Asian female with underlying paranoid schizophrenia presented with newly diagnosed type 2 diabetes mellitus complicated with HHS. Her renal function deteriorated rapidly in spite of standard management for hyperglycemic crisis. Rhabdomyolysis was subsequently diagnosed according to the high levels of serum creatine kinase (CK) (37,710 U/L, normal range: 20-180 U/L) and myoglobin (5167.7 ng/mL, normal range: 14.3-65.8 ng/mL).

INTERVENTIONS

After treatment failure of intravenous hydration plus loop diuretic agent for rhabdomyolysis related acute renal failure, temporary hemodialysis was performed 3 times to relieve oligouria and pulmonary edema.

OUTCOMES

Her renal function recovered well after temporary renal replacement therapy.

LESSONS

Rhabdomyolysis is a complication of HHS. Delayed detection can be fatal, and timely renal replacement therapy can result in an excellent prognosis. Therefore, it is crucial for clinicians to detect and treat such patients as early as possible to avoid impairing their renal function.

A new challenge in pediatric obesity: pediatric hyperglycemic hyperosmolar syndrome

OBJECTIVES

To describe four adolescents with hyperglycemic hyperosmolar syndrome, an uncommon presentation of type 2 diabetes in pediatric patients.

DESIGN

Case report.

SETTING

Two tertiary pediatric intensive care units in university teaching hospitals.

PATIENTS

Four obese adolescents with hyperglycemic hyperosmolar syndrome associated with type 2 diabetes mellitus.

INTERVENTIONS

Isotonic fluid resuscitation and insulin.

MEASUREMENTS AND MAIN RESULTS

Two of the four patients died. The first patient died within the first 24 hrs of hyperglycemic hyperosmolar syndrome presumably due to hypovolemic shock. The second patient, who died, developed rhabdomyolysis and multiple-system organ failure after a prolonged intensive care unit stay. The third and fourth patients were discharged from the hospital in good health. None of the patients had cerebral edema on head computed tomography, despite differences in fluid and insulin management.

CONCLUSIONS

Pediatric patients with hyperglycemic hyperosmolar syndrome have a high mortality rate and may experience multiple complications such as rhabdomyolysis and hypovolemic shock. Treatment strategies to reduce mortality are unclear and warrant further investigation.