MCN 538 LATEST 2026 TEST EXAM MANUAL QUESTIONS
AND ANSWERS GRADED A+
✔✔Screening for Gestational Diabetes - ✔✔Universal Screening: Typically conducted
between 24-28 weeks of pregnancy. High-Risk Patients: May be screened earlier based
on risk factors (obesity, family history, previous gestational diabetes).
✔✔1-Hour Glucose Challenge Test (GCT) - ✔✔50 g of glucose given; blood glucose
measured after 1 hour. Positive if ≥ 140 mg/dL.
✔✔Oral Glucose Tolerance Test (OGTT) - ✔✔If GCT is positive, perform a 3-hour
OGTT with 100 g of glucose. Diagnosis of gestational diabetes if two or more values are
met/exceeded: Fasting: ≥ 95 mg/dL, 1 hour: ≥ 180 mg/dL, 2 hours: ≥ 155 mg/dL, 3
hours: ≥ 140 mg/dL.
✔✔Random Glucose Result - ✔✔A result of ≥ 200 mg/dL indicates diabetes, especially
with symptoms.
✔✔HgA1c Indication - ✔✔Indicates average blood glucose levels over the past 2-3
months; < 5.7% NORMAL, 5.7%-6.4% PREDIABETES, ≥ 6.5% DIABETES.
✔✔Hypothyroidism Definition - ✔✔Hypothyroidism occurs when the thyroid gland does
not produce sufficient thyroid hormone, leading to various metabolic disturbances in the
body.
✔✔Common Causes of Hypothyroidism - ✔✔Autoimmune Disease: Hashimoto's
thyroiditis is a common cause. Surgical Removal: Partial or total thyroidectomy can lead
to hormone deficiency. Radiation Treatment: Used for cancers can damage the thyroid
gland.
✔✔Key Diagnostic Points for Hypothyroidism - ✔✔High TSH indicates that the pituitary
gland is signaling for more thyroid hormone, which is typical in hypothyroidism. Low T4
confirms the diagnosis.
✔✔Symptoms of Hypothyroidism - ✔✔Fatigue, weight gain, cold intolerance, dry skin,
hair loss, and constipation.
✔✔Hyperthyroidism Definition - ✔✔Hyperthyroidism, or thyrotoxicosis, occurs when the
thyroid gland produces excessive amounts of thyroid hormone.
✔✔Common Causes of Hyperthyroidism - ✔✔Graves' Disease: An autoimmune
disorder leading to overproduction of thyroid hormone, often seen in young women and
can run in families.
, ✔✔Key Diagnostic Points for Hyperthyroidism - ✔✔Low TSH indicates that the pituitary
gland is not signaling for more thyroid hormone, reflecting the high hormone levels in
the blood. Elevated T4 confirms hyperthyroidism.
✔✔Symptoms of Hyperthyroidism - ✔✔Weight loss, increased appetite, heat
intolerance, sweating, nervousness, and palpitations.
✔✔Thyroid Nodules Definition - ✔✔Thyroid nodules are lumps or masses in the thyroid
gland, which can sometimes lead to hyperthyroidism (toxic nodular goiter).
✔✔Characteristics of Thyroid Nodules - ✔✔Occur more frequently in women than men
(four times more). Can be single (toxic nodular goiter) or multiple (multinodular goiter).
✔✔Management of Thyroid Nodules - ✔✔Patients with thyroid nodules should be
referred to an endocrinologist for further evaluation and management, which may
include imaging studies and potential biopsy.
✔✔Symptoms of Thyroid Nodules - ✔✔Nodules may not produce noticeable symptoms,
but can cause swelling or discomfort in the neck, and in some cases may lead to
hyperthyroidism.
✔✔Thyroid Exam Step 1 - ✔✔Inspection: Position the Patient: Have the patient seated
comfortably. Inspect the Neck: Look for any swelling or asymmetry in the neck area.
Observe for any visible goiter or masses, especially around the thyroid gland's location
(just below the Adam's apple).
✔✔Thyroid Exam Step 2 - ✔✔Palpation: Palpate the Thyroid Gland: Stand behind the
patient. Use your fingers to palpate the thyroid gland by placing your fingers just below
the Adam's apple and moving laterally. Ask the patient to swallow; feel for the gland
moving under your fingers. Assess for Nodules: Note the size, consistency, and
tenderness of any nodules.
✔✔Thyroid Exam Step 3 - ✔✔Auscultation: Auscultate the Thyroid: Use a stethoscope
to listen over the thyroid gland for any bruits, which may indicate increased blood flow
(common in hyperthyroidism).
✔✔Thyroid Exam Step 4 - ✔✔Functional Assessment: Check for Symptoms: Ask about
symptoms of hypothyroidism (fatigue, weight gain, cold intolerance) or hyperthyroidism
(weight loss, heat intolerance, palpitations). Assess Vital Signs: Consider checking
heart rate and blood pressure, as they can provide insight into thyroid function.
✔✔ Musculoskeletal Disorders - ✔✔Conditions affecting muscles, bones, and joints.
✔✔Low Back Pain - ✔✔Most common musculoskeletal complaint in primary care.
AND ANSWERS GRADED A+
✔✔Screening for Gestational Diabetes - ✔✔Universal Screening: Typically conducted
between 24-28 weeks of pregnancy. High-Risk Patients: May be screened earlier based
on risk factors (obesity, family history, previous gestational diabetes).
✔✔1-Hour Glucose Challenge Test (GCT) - ✔✔50 g of glucose given; blood glucose
measured after 1 hour. Positive if ≥ 140 mg/dL.
✔✔Oral Glucose Tolerance Test (OGTT) - ✔✔If GCT is positive, perform a 3-hour
OGTT with 100 g of glucose. Diagnosis of gestational diabetes if two or more values are
met/exceeded: Fasting: ≥ 95 mg/dL, 1 hour: ≥ 180 mg/dL, 2 hours: ≥ 155 mg/dL, 3
hours: ≥ 140 mg/dL.
✔✔Random Glucose Result - ✔✔A result of ≥ 200 mg/dL indicates diabetes, especially
with symptoms.
✔✔HgA1c Indication - ✔✔Indicates average blood glucose levels over the past 2-3
months; < 5.7% NORMAL, 5.7%-6.4% PREDIABETES, ≥ 6.5% DIABETES.
✔✔Hypothyroidism Definition - ✔✔Hypothyroidism occurs when the thyroid gland does
not produce sufficient thyroid hormone, leading to various metabolic disturbances in the
body.
✔✔Common Causes of Hypothyroidism - ✔✔Autoimmune Disease: Hashimoto's
thyroiditis is a common cause. Surgical Removal: Partial or total thyroidectomy can lead
to hormone deficiency. Radiation Treatment: Used for cancers can damage the thyroid
gland.
✔✔Key Diagnostic Points for Hypothyroidism - ✔✔High TSH indicates that the pituitary
gland is signaling for more thyroid hormone, which is typical in hypothyroidism. Low T4
confirms the diagnosis.
✔✔Symptoms of Hypothyroidism - ✔✔Fatigue, weight gain, cold intolerance, dry skin,
hair loss, and constipation.
✔✔Hyperthyroidism Definition - ✔✔Hyperthyroidism, or thyrotoxicosis, occurs when the
thyroid gland produces excessive amounts of thyroid hormone.
✔✔Common Causes of Hyperthyroidism - ✔✔Graves' Disease: An autoimmune
disorder leading to overproduction of thyroid hormone, often seen in young women and
can run in families.
, ✔✔Key Diagnostic Points for Hyperthyroidism - ✔✔Low TSH indicates that the pituitary
gland is not signaling for more thyroid hormone, reflecting the high hormone levels in
the blood. Elevated T4 confirms hyperthyroidism.
✔✔Symptoms of Hyperthyroidism - ✔✔Weight loss, increased appetite, heat
intolerance, sweating, nervousness, and palpitations.
✔✔Thyroid Nodules Definition - ✔✔Thyroid nodules are lumps or masses in the thyroid
gland, which can sometimes lead to hyperthyroidism (toxic nodular goiter).
✔✔Characteristics of Thyroid Nodules - ✔✔Occur more frequently in women than men
(four times more). Can be single (toxic nodular goiter) or multiple (multinodular goiter).
✔✔Management of Thyroid Nodules - ✔✔Patients with thyroid nodules should be
referred to an endocrinologist for further evaluation and management, which may
include imaging studies and potential biopsy.
✔✔Symptoms of Thyroid Nodules - ✔✔Nodules may not produce noticeable symptoms,
but can cause swelling or discomfort in the neck, and in some cases may lead to
hyperthyroidism.
✔✔Thyroid Exam Step 1 - ✔✔Inspection: Position the Patient: Have the patient seated
comfortably. Inspect the Neck: Look for any swelling or asymmetry in the neck area.
Observe for any visible goiter or masses, especially around the thyroid gland's location
(just below the Adam's apple).
✔✔Thyroid Exam Step 2 - ✔✔Palpation: Palpate the Thyroid Gland: Stand behind the
patient. Use your fingers to palpate the thyroid gland by placing your fingers just below
the Adam's apple and moving laterally. Ask the patient to swallow; feel for the gland
moving under your fingers. Assess for Nodules: Note the size, consistency, and
tenderness of any nodules.
✔✔Thyroid Exam Step 3 - ✔✔Auscultation: Auscultate the Thyroid: Use a stethoscope
to listen over the thyroid gland for any bruits, which may indicate increased blood flow
(common in hyperthyroidism).
✔✔Thyroid Exam Step 4 - ✔✔Functional Assessment: Check for Symptoms: Ask about
symptoms of hypothyroidism (fatigue, weight gain, cold intolerance) or hyperthyroidism
(weight loss, heat intolerance, palpitations). Assess Vital Signs: Consider checking
heart rate and blood pressure, as they can provide insight into thyroid function.
✔✔ Musculoskeletal Disorders - ✔✔Conditions affecting muscles, bones, and joints.
✔✔Low Back Pain - ✔✔Most common musculoskeletal complaint in primary care.
