Chapter 20 Acute Diabetic Emergencies Prehospital Emergency Care
Chapter 20 Acute Diabetic Emergencies Prehospital Emergency Care, Ninth Edition Joseph J. Mistovich • Keith J. Karren Copyright © 2010 by Pearson Education, Inc. All rights reserved.
Objectives 1. Define key terms introduced in this chapter. 2. Describe the following regarding glucose (slides 1213): a. The function of glucose in the body b. Response of brain cells and other body cells to insufficient glucose levels c. Relationships of glucose and water 3. Describe how insulin and glucagon function to control blood glucose levels (slides 14 -17). 4. Describe how glucose levels are regulated in normal metabolism (slides 20 -21). 5. Explain the purposes and process of checking blood glucose levels. (slides 22 -26).
Objectives 6. Discuss the pathophysiology of diabetes mellitus (DM) and contrast type 1 insulin-dependent diabetes mellitus (IDDM) with type 2 noninsulin- dependent diabetes mellitus (NIDDM) (slides 27 -29). 7. Discuss the pathophysiology, assessment, and emergency medical care of a hypoglycemic emergency (slides 30 -36). 8. Identify indications and contraindications to the administration of oral glucose (slides 37 -39). 9. Discuss the pathophysiology, assessment, and emergency medical care of diabetic ketoacidosis (DKA) (slides 40 -47).
Objectives 10. Compare and contrast the speed of onset and the signs and symptoms of hypoglycemia and hyperglycemia (slides 34, 45). 11. Describe the primary differences between DKA and hyperglycemic hyperosmolar nonketotic syndrome (HHNS) (slides 43, 48, 50). 12. Discuss the pathophysiology, assessment, and emergency medical care of HHNS (slides 48 -52). 13. Discuss the assessment-based approach to a patient with an altered mental status in a diabetic emergency (slides 53 -63).
Multimedia Directory Slide 26 Slide 29 Slide 39 How to Use a Blood Glucose Meter Video Information about Diabetes Video The Use of Oral Glucose Animation
Topics Understanding Diabetes Mellitus Acute Diabetic Emergencies Assessment-Based Approach: Altered Mental Status in a Diabetic Emergency
CASE STUDY Dispatch
EMS Unit 106 Respond to 514 Chicago Avenue for a 66 -yearold male who is disoriented and belligerent. The neighbor placed the call. Time out 1402
Upon Arrival • Neighbor found patient in her garden next door • When she approached him, the patient began cursing at her • Patient is acting strange and not making sense
How would you proceed to assess and care for this patient?
Understanding Diabetes Mellitus Back to Topics
Glucose (Sugar) Back to Objectives
• Sources • Roles • Brain cells
Hormones That Control Blood Glucose Levels Insulin Back to Objectives
Insulin • Main functions • How it works
Hormones That Control Blood Glucose Levels Glucagon
Glucagon • Role • Functions
Hormones That Control Blood Glucose Levels Other Hormones
Epinephrine • Released by the adrenal glands • Stops the secretion of insulin • Promotes release of stored glucose from the liver • Promotes conversion of other substances into glucose
Normal Metabolism and Glucose Regulation Back to Objectives
Normal Glucose Regulation
Checking the Blood Glucose Level Back to Objectives
• Glucose meters • Hypoglycemia • Hyperglycemia
Checking the Blood Glucose Level Testing the Blood Glucose Level with a Glucose Meter
• Blood sample • Equipment needed
How to Use a Blood Glucose Meter Click here to view a video on how to use a blood glucose meter. Return to Directory
Diabetes Mellitus (DM) Back to Objectives
• Primary problem • Type I diabetes • Type II diabetes
Information about Diabetes Click here to view a video on information about diabetes. Return to Directory
Acute Diabetic Emergencies Back to Topics
Hypoglycemia Pathophysiology of Hypoglycemia Back to Objectives
• Cause • Reasons for drop Pathophysiology
Hypoglycemia Assessment Findings in Hypoglycemia and Hypoglycemia Unawareness
Assessment Findings Back to Objectives • Cause • Signs and symptoms • Hypoglycemia unawareness
Hypoglycemia Emergency Medical Care for Hypoglycemia
Emergency Medical Care • For a responsive patient • For an unresponsive patient
Oral Glucose Back to Objectives
• Purpose for administration • Criteria for administration
Information about the Use of Oral Glucose Click here to view information about the use of oral glucose. Return to Directory
Hyperglycemia Back to Objectives
• Hyperglycemia • Diabetic ketoacidosis (DKA) • Hyperglycemic hyperosmolar nonketotic syndrome (HHNS)
Hyperglycemic Condition: Diabetic Ketoacidosis (DKA) Pathophysiology of DKA
Pathophysiology • Cause • Results in the body • Factors causing hyperglycemia in DKA patients Back to Objectives
Hyperglycemic Condition: Diabetic Ketoacidosis (DKA) Assessment Findings in DKA
Assessment Findings • Signs and symptoms – Polyuria – Polydipsia – Polyphagia • Kussmaul’s respirations Back to Objectives
Hyperglycemic Condition: Diabetic Ketoacidosis (DKA) Emergency Medical Care for DKA
Emergency Medical Care • • • ABCs Provide O 2 Assist ventilation Check BGL Contact medical direction
Hyperglycemic Condition: Hyperglycemic Hyperosmolar Nonketotic Syndrome (HHNS) Pathophysiology of HHNS Back to Objectives
Pathophysiology • Blood glucose level • Precipitating factors
Hyperglycemic Condition: Hyperglycemic Hyperosmolar Nonketotic Syndrome (HHNS) Assessment Findings in HHNS Back to Objectives
Assessment Findings Signs and symptoms
Emergency Medical Care • • • ABCs Provide O 2 Support respirations Determine BGL Medical direction
Assessment-Based Approach: Altered Mental Status in a Diabetic Emergency Back to Topics
Scene Size-Up and Primary Assessment Back to Objectives
Look for scene clues • Medic alert tags • Insulin pumps
History and Secondary Assessment
• SAMPLE • Common medications • Questions to ask
History and Secondary Assessment Signs and Symptoms
Signs and Symptoms • Place redrawn picture 2009 here – did not have yet, WDS
Emergency Medical Care
• ABCs • Determine if patient can swallow • Administer oral glucose • Transport
Reassessment
• • May take 20 minutes to see improvement Recheck BGL Continue O 2 Manage airway as needed
CASE STUDY Follow-Up
CASE STUDY Primary Assessment • Patient sitting on couch • Find Digoxin in kitchen and insulin in refrigerator • Patient is pale and sweating profusely • Patient speaking in mumbled words
CASE STUDY Primary Assessment • Partner places a nonrebreather mask at 15 lpm • RR: 15; P: 100 and strong
CASE STUDY Secondary Assessment • Do rapid assessment • BP: 102/60 mm. Hg; P: 108; RR: 16; skin pale, cool, and moist; Sp. O 2: 97 percent • BGL: 48 mg/d. L • Administer one tube of glucose • Place patient in left lateral position
CASE STUDY Treatment and Reassessment • Becomes oriented to name and place • Pulse rate, skin, and Sp. O 2 improve • Change over to nasal cannula • Alert and oriented upon arrival • Transfer care without incident
Critical Thinking Scenario • 34 -year-old female with an altered mental status • Responds to painful stimuli only with moans • A neighbor called 911 after finding her on the couch and not responding
Critical Thinking Scenario • S – Supine on the couch, not alert • A – Unknown • M – Her neighbor brings you the patient’s medications: Zoloft and Novolin • P – Her neighbor doesn’t know the patient’s medical history • L – Unknown • E – Patient called the neighbor 20 minutes ago and said she wasn’t feeling well
Critical Thinking Scenario Vital signs: • BP: 108/62 mm. Hg • HR: 122 bpm • RR: 12 per minute with snoring respirations but adequate chest rise • Skin is pale, cool, and very diaphoretic
Critical Thinking Questions 1. What emergency care would you provide during the primary assessment? 2. Based on the signs, what condition do you suspect the patient is experiencing? 3. What other assessment procedures would be helpful to you for this patient? 4. What would you expect the blood glucose reading to be in the patient? 5. Why is the onset of the altered mental status significant in this patient?
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