click below
click below
Normal Size Small Size show me how
M6 13-005
Exam 13: Adrenal Disorders
Term | Definition |
---|---|
Adrenal Glands | Small, yellow glands that lie atop the kidneys. Adrenal cortex ( Outer section). Adrenal medulla ( Inner section). |
Adrenal cortex | Three separate layers Secretes a particular hormone (steroid) |
Mineralcorticoids – Primary – Aldosterone | Water and electrolyte balance Indirectly manage blood pressure |
Glucocorticoids – Primary – Cortisol | Glucose metabolism. Energy in times of stress. Anti-inflammatory properties. |
Sex hormones | Androgens - male hormones. Estrogens- female hormones. |
Adrenal Glands Do what? | Secrete hormones which help regulate chemical balance, regulate metabolism and supplement other glands. |
Adrenal medulla releases two hormones during stress “Fight or Flight” | Epinephrine ( adrenaline) Norepinephrine |
Stress Response (2-system) | 1) Stressor-Brain-Anterior Pituitary-Adrenal Cortex-Glucocoticoids. 2)Stressor-Brain-Sympathetic Nervous System-Adrenal Medulla-Norepinephrine & Epinephrine |
Name the three types of steroids released by the adrenal glands. | Mineralcorticoids Glucocorticoids Sex hormones |
Cushing’s Syndrome(Adrenal Hyperfunction) | Hyperplasia of adrenal tissue. Tumor of the adrenal cortex. ACTH-secreting neoplasms. Overuse of corticosteroid drugs. More common in women . |
Cushing’s Syndrome(Adrenal Hyperfunction): Pathophysiology | Increased adrenocortical hormones. Excess secretion of the adrenal hormones. |
Cushing’s Syndrome(Adrenal Hyperfunction): Subjective Data | Irritable. Mental changes. Emotional instability. Depression. Loss of libido. Severe backache. Appetite change. |
Cushing’s Syndrome(Adrenal Hyperfunction): Objective Data | Ecchymoses and petechiae. Skin-thin and fragile. Weight gain. Hypertension. Muscle wasting. Moon face. Buffalo hump. Prolonged wound healing. Increased susceptibility to infection. Osteoporosis/ kyphosis. Women- Hirsutism and menstrual irregula |
Cushing’s Syndrome(Adrenal Hyperfunction): Dx Test Results | Hyperglycemia, hypernatremia, hypokalemia. Plasma cortisol elevated. Plasma ACTH may be increased or decreased. Adrenal angiography. 24-hr urine. Abdominal CT. Ultrasound . |
Cushing’s Syndrome(Adrenal Hyperfunction): Meds | Mitotane (Lysodern) |
Addison’s Disease(Adrenal Hypofunction) | Adrenalectomy. Pituitary hypofunction. Longstanding steroid therapy. Idiopathic adrenal atrophy. Cancer of the adrenal cortex. Tuberculosis. Autoimmune response. |
Addison’s Disease(Adrenal Hypofunction): Pathophysiology | Inadequate secretion of glucocorticoids. (cortisol) & mineralcorticoids (aldosterone). Deficiencies in aldosterone and cortisol. Electrolyte and fluid imbalance. |
Addison’s Disease(Adrenal Hypofunction): Subjective Data | Nausea, anorexia and salt craving. Postural hypotension. Vertigo, weakness, and syncope. Severe headache, disorientation, abdominal pain. Anxious and apprehensive. |
Addison’s Disease(Adrenal Hypofunction): Objective Data | Skin hyperpigmentation. Weight loss. Hypoglycemia. Abnormal temperature. Hyponatremia and hyperkalemia. |
Addison’s Disease(Adrenal Hypofunction): Dx Test | Hyponatremia, hypoglycemia, hyperkalemia 24-hr urine Cortisol & aldosterone are low |
Addison’s Disease(Adrenal Hypofunction): Medical Management | Prompt restoration of fluid and electrolyte balance Replacement of deficient adrenal hormones Diet high in sodium and low in potassium |
Deficiencies in aldosterone and cortisol will produce what type of metabolic disturbances? | Deficiencies in aldosterone and cortisol produce disturbances of the metabolism of carbohydrates, fats, proteins, as well as sodium, potassium, and water. |
Nursing Care of a Patient in Addisonian Crisis | Sudden, severe drop in B/P (hypotension) Anorexia, nausea and vomiting Extremely high temperature Diarrhea, abdominal pain Profound weakness Headache, restlessness or fever |
Nursing Care of a Patient in Addisonian Crisis: Emergency Treatment | adrenal crisis is an emergency: death may occur from hypotension and vasomotor collapse. Corticosteroids. Antibiotics. |
What are the signs/symptoms of Addisonian Crisis? | Symptoms may include anorexia, nausea and vomiting, diarrhea, abdominal pain, headache, hypotension, restlessness, and fever. |
Pheochromocytoma | Chromaffin cell tumor, usually found in the adrenal medulla, that causes excessive secretion of epinephrine and norepinephrine Tumors almost always benign; about 10% are malignant. Occur most often in adults 20 - 60 years of age. HTN. |
The principle manifestation of pheochromocytoma is | HTN. Hypertensive crisis may occur, with BP as high as 300/175. (BP will fluctuate widely during crises). |
Pheochromocytoma: Subjective data | Presence of severe headache, palpitations, anxiety Severe hypertension Tremors, nervousness, dizzy and dyspnea Nausea and intolerance to heat Paresthesias |
Pheochromocytoma: objective Data | Severe hypertension. Tachycardia, tremors, diaphoresis, and dilated pupils. Hyperglycemia. Glycosuria. |
Pheochromocytoma: Medical management | Surgical removal if tumor Blood pressure control |
What is the most common symptom of pheochromocytoma? | Severe hypertension. |
Adrenalectomy | Surgically approached by means of an abdominal or flank incision under and following the position of the 12th rib. |