Diabetes

59.12 Differentiation of Hypoglycemia and Hyperglycemia

Feature Comparison

• SkinHypoglycemia: Cool, clammy, and "sweaty" skin caused by the body's adrenaline response to low blood sugar levels.Hyperglycemia: Warm, dry skin that appears vasodilated due to dehydration and poor circulation associated with high blood sugar levels.

• DehydrationHypoglycemia: Dehydration is absent as blood sugar levels stabilizes fluid balance.Hyperglycemia: Presence of dehydration due to osmotic diuresis resulting from elevated glucose levels.

• RespirationsHypoglycemia: No particular or consistent changes noted in respiratory patterns.Hyperglycemia: Rapid, deep respirations characteristic of Kussmaul breathing; may also have an acetone odor, reminiscent of rotten or "fruity" smell due to ketone production.

• Mental StatusHypoglycemia: Patients can present as anxious, nervous, and irritable, often leading to confusion. Severe cases may escalate to seizures or coma as glucose deprivation affects brain function.Hyperglycemia: Mental status can vary widely, ranging from alert to stuporous, with potential progression to obtunded or frank coma in severe situations due to acidosis or dehydration.

• SymptomsHypoglycemia: Common symptoms include weakness, double vision, blurred vision, intense hunger, tachycardia, palpitations, abdominal cramps, and nausea/vomiting as the body reacts to low blood sugar levels.Hyperglycemia: Symptoms are not specific for Diabetic Ketoacidosis (DKA) but may include signs of acidosis and hypercapnia, with a significant increase in blood sugar levels leading to various complications.

• Dehydration SignsHypoglycemia: Without signs of dehydration, patients may exhibit decreased neck vein filling, orthostatic hypotension, tachycardia, and poor skin turgor upon examination.Hyperglycemia: Clear evidence of dehydration with signs such as dry mucous membranes and decreased capillary refill time.

• Glucose LevelsHypoglycemia: Identified when blood glucose levels fall below 70 mg/dL (3.9 mmol/L). Diagnostic considerations are crucial as symptoms may not always correlate with glucose levels.Hyperglycemia: Defined by blood glucose levels exceeding 250 mg/dL (13.8 mmol/L), often necessitating further evaluation for possible DKA or HHS.

• Urine or Blood KetonesHypoglycemia: Ketone bodies are typically negative; their presence indicates a different metabolic issue.Hyperglycemia: Positive ketones in urine or blood confirm the occurrence of metabolic derangement, commonly seen in DKA.

59.12 Signs of Hypokalemia

Symptoms of Hypokalemia

• Common symptoms include fatigue, malaise, and confusion, which can be mistaken for other conditions.

• Muscle weakness may present as shallow respirations and may complicate breathing.

• Gastrointestinal complications such as abdominal distention or paralytic ileus can also occur.

• Cardiovascular implications include hypotension and weak pulse, which may indicate compromised circulation.

• ECG Changes: ECG may display conduction alterations, such as flattened T-waves or U-waves, directly linked to impaired potassium levels.

Nursing Priority

• It is critical to verify the patient's urine output before administering intravenous potassium, ensuring it is at least 30 mL/hr to prevent complications from rapid potassium infusion.

59.13 Differences Between Diabetic Ketoacidosis and Hyperglycemic-Hyperosmolar State

Onset

• Diabetic Ketoacidosis (DKA): Rapid onset of symptoms, often within hours.

• Type 2 Hyperglycemic-Hyperosmolar State (HHS): Symptoms develop gradually over days to weeks, often resulting in a more severe presentation by the time of diagnosis.

Precipitating Factors

• DKA: Often triggered by infections, inadequate insulin dosing, or newly diagnosed diabetes.

• HHS: Associated with infections, other stressors like surgery, poor fluid intake, and significant comorbidities, frequently in older adults.

Symptoms Comparison

• DKA Symptoms:

  • Prominent ketosis reflected by Kussmaul respiration, characteristic "rotting fruit" breath, alongside general symptoms such as nausea and abdominal pain.

  • Accompanying dehydration or electrolyte loss, indicated by polyuria, polydipsia, weight loss, dry skin, lethargy, and progression to coma if untreated.

• HHS Symptoms:

  • Similar to DKA but may present with altered central nervous system function, including confusion and lethargy without the profound metabolic derangement seen in DKA.

Laboratory Findings

• Serum Glucose:

  • DKA: Blood glucose typically >300 mg/dL (16.7 mmol/L).

  • HHS: Significantly higher levels, often >600 mg/dL (33.3 mmol/L).

• Osmolarity:

  • DKA: Variable osmolarity based on hydration status.

  • HHS: Osmolarity often exceeds 320 mOsm/L, indicative of significant dehydration.

• Serum Ketones and pH:

  • DKA: Positive serum ketones and arterial blood pH <7.35 confirm acidosis.

  • HHS: Negative for ketones with pH >7.4 shows less metabolic disturbance.

• Serum HCO3:

  • DKA: Typically <15 mEq/L, indicating metabolic acidosis.

  • HHS: Levels usually >20 mEq/L, reflecting more stable bicarbonate reserves.

• Serum Na+:

  • DKA: Sodium levels can vary; can be low, normal, or high.

  • HHS: Often remains normal or low.

• BUN and Creatinine:

  • DKA: Elevated (>30 mg/dL for BUN; >1.5 mg/dL for Creatinine) due to dehydration.

  • HHS: Elevated levels are common, emphasizing renal involvement.

• Urine Ketones:

  • DKA: Urine analysis often shows positive for ketones.

  • HHS: Typically negative, indicating an absence of ketosis.

Patient-Centered Care: Older Adult Considerations

• HHS in Older Patients:

  • Increasingly common and frequently misdiagnosed type 2 diabetes, associated with mortality rates up to 16%.

  • Symptoms typically develop gradually, leading patients to present with advanced illness at diagnosis.

• Risk Factors:

  • Notable risk factors include age-related changes in thirst perception, impaired urine concentration abilities, and the use of diuretics.

• Assessment Requirement:

  • Evaluating dehydration in older adults is essential, independent of their diabetes status to ensure prompt treatment and care.

Patient and Family Education: Preparing for Self-Management

• Sick-Day Rules:

  • Encourage patients to notify their healthcare provider when ill.

  • Blood glucose monitoring every 4 hours is crucial to manage fluctuations during illness.

  • Urine ketone testing is necessary if blood glucose exceeds 240 mg/dL, reflecting the need for potential insulin adjustments.

  • Ensuring hydration with sugar-free liquids (8 to 12 ounces per hour) is vital for managing blood sugar levels.

  • When glucose levels fall below target, advise on consuming fluids that contain sugar for stabilization.

  • Emphasizing adherence to meal timing is critical in managing diabetes effectively.

  • Managing nausea is essential, as it interferes with fluid and food intake; suggest alternative foods or liquids as tolerated.

  • It's essential to contact the provider for persistent nausea and vomiting, moderate/high ketones, elevated blood glucose that does not stabilize after two doses of insulin, fever above 101.5°F (38.6°C), or fever lasting over 24 hours.

  • Rest: Encourage adequate rest to facilitate recovery and avoid further complications.

Nursing Priority: Patient Monitoring

• Continuous assessment for changes in the hyperglycemic-hyperosmolar state is critical. Immediate reporting of altered consciousness, pupil changes, or seizures to healthcare providers is imperative to prevent adverse outcomes.

59.14 Assessment of Needs for the Patient with Diabetes

• Health and Medical History:

  • Full assessment required to understand previous illnesses, diagnoses, and current medications.

• Nutrition Practices:

  • Evaluation of dietary habits and adherence to dietary recommendations is essential for optimal diabetes management.

• Physical Activity:

  • Assessing the patient's level of physical activity helps in creating personalized management plans.

• Medication History:

  • Detailed medication history, including adherence levels and side effects experienced, is crucial in managing diabetes effectively.

• Influencing Factors for Learning:

  • Understanding the education level, motivations, and beliefs about diabetes can guide tailoring educational approaches.

• Diabetes Self-Management Behaviors:

  • Insight into the patient’s experiences with treatment plan adjustments provides key information for education.

• Prior Training:

  • Evaluation of previous training received ensures reinforcement of necessary skills and knowledge in managing diabetes.

• Physical Factors:

  • Consideration of age, mobility and sensory acuity which can influence self-management abilities.

• Psychosocial Factors:

  • Family support, mental health status, and social influences contribute significantly to diabetes management success.

• Substance Use History:

  • Includes evaluation of tobacco and alcohol use, as these can complicate diabetes management.

• Socioeconomic Status:

  • Assessing education and financial conditions helps in understanding access to health resources and managing diabetes effectively.

• Access to Health Resources:

  • Evaluate availability of healthcare services and resources to aid in diabetes self-management.

• Education on Self-Management

  • Initiate education on self-management procedures at the time of diagnosis for effective disease control.

  • Emphasize the importance of glucose testing, ketone testing, and insulin dosage adjustments alongside education on psychosocial aspects surrounding diabetes management.

  • Stressing the importance of routine and recognizing hypoglycemic symptoms is vital.

• Outcome Criteria:

  • Focus on achieving and maintaining optimal blood glucose control, avoiding complications, ensuring good wound healing post-surgery, maintaining optimal vision, and monitoring urine output all align with effective diabetes management.

  • Keeping episodes of hypo/hyperglycemia within target range is a crucial aspect of patient care.