Medical Surgical Nursing

(Tina Sui) #1

 Moderate to high rates of infusion (200 to 500 mL/hour) may continue for several


more hours.

 Although the initial plasma concentration of potassium may be low, normal, or


even high, There is a major loss of potassium from body stores and an intracellular-
to-extracellular shift of potassium.

 Furthermore, the serum level of potassium decreases as potassium reenters the cells


during the course of treatment of DKA; therefore, the serum potassium level must
be monitored frequently.

 IV fluid solutions with higher concentrations of glucose, such as normal saline (NS)


solution (eg, D 5 NS, D5.45NS), are administered when blood glucose levels reach
250 to 300 mg/dL (13.8 to 16.6 mmol/L), to avoid too rapid a drop in the blood
glucose level (ie, hypoglycemia) during treatment.

Hyperosmolar hyperglycemic nonketotic syndrome (HHNS)



  • Is a serious condition most frequently seen in older persons.

  • HHNS is usually brought on by something else, such as an illness or infection,
    dialysis, drugs that increase BS.

  • Blood sugar levels rise resulting into glycosuria, polyuria, thirst.

  • Severe dehydration will lead to seizures, coma and eventually death.

  • HHNS may take days or even weeks to develop. Know the warning signs of HHNS.


HHNS/ clinical manifestations


Hypotension, profound dehydration (dry mucous membranes, poor skin turgor),


tachycardia, and variable neurologic signs (eg, alteration of sensorium, seizures,
hemiparesis).



  • Blood glucose level (600 to 1200 mg/dL)

  • Treatment: fluid replacement, correction of electrolyte imbalances, and insulin.

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