A nurse is reviewing the EKG strip of a client who is hypertensive and is complaining of muscle weakness. Which of the following abnormalities on the clients EKG should the nurse interpret as a sign of hyperkalemia?

Peaked T waves

Inverted P waves

Widened QRS

Prominent U wave

Answer and Explanation

The Correct Answer is A

A) Peaked T waves:
Peaked T waves are a classic sign of hyperkalemia on an EKG. As potassium levels rise, the T waves become taller, more pointed, and narrow, indicating changes in the heart's electrical conduction. This is one of the earliest and most characteristic EKG changes seen with hyperkalemia. Hyperkalemia can result from conditions such as kidney dysfunction, use of potassium-sparing diuretics, or other electrolyte imbalances.

B) Inverted P waves:
Inverted P waves typically suggest issues such as atrial ischemia or ectopic atrial rhythms but are not a hallmark sign of hyperkalemia. They may also appear with other conditions, like atrial fibrillation or atrial flutter. However, inverted P waves are not typically linked to elevated potassium levels.

C) Widened QRS:
A widened QRS complex can occur in several conditions, including hyperkalemia, but it is generally seen in more severe cases. As potassium levels rise further, the QRS complex may widen due to delayed conduction through the ventricles. Although a widened QRS can indicate hyperkalemia, it is a later sign, and it typically occurs after more specific changes like peaked T waves.

D) Prominent U wave:
Prominent U waves are more often associated with hypokalemia (low potassium levels) rather than hyperkalemia. U waves are typically seen after the T wave on the EKG and can be more prominent in conditions of low potassium.

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Correct Answer is A

Explanation

A) Women should start yearly mammograms at age 40:
Mammography is a key screening tool for breast cancer detection. According to guidelines from the American Cancer Society (ACS) and other leading health organizations, women should begin annual mammograms at age 40. This recommendation applies to average-risk women who are not showing any symptoms of breast cancer. Mammograms are effective in detecting early-stage breast cancer, which is crucial for better treatment outcomes.

B) Women should have a yearly clinical breast examination starting at age 50:
The clinical breast examination (CBE) is a physical exam performed by a healthcare provider to check for breast cancer. However, the recommendation is to have a clinical breast examination every 1-3 years for women in their 20s and 30s and annually for women 40 and older, not just beginning at age 50. It is not necessary to wait until age 50 to start yearly CBEs.

C) Clients should have fecal occult blood test every other year:
The fecal occult blood test (FOBT) is used to detect hidden blood in the stool, which may be a sign of colon cancer. However, this test is not typically performed every other year for all clients. The recommended schedule for colorectal cancer screening depends on risk factors. The American Cancer Society recommends annual FOBT or fecal immunochemical test (FIT) for clients over the age of 45 who are at average risk for colon cancer. More invasive tests, such as colonoscopy, are generally recommended for people at higher risk or after positive results from non-invasive tests like FOBT.

D) Clients should have a colonoscopy at age 40 and every 10 years thereafter:
The recommended age for the first colonoscopy is age 45 for individuals at average risk of colorectal cancer, not 40. Colonoscopies are typically performed every 10 years after the initial screening unless there are risk factors (e.g., family history, genetic conditions) that require earlier or more frequent screenings.

A. Spironolactone B. Furosemide C. Hydrochlorothiazide D. Metolazone

Correct Answer is A

Explanation

A) Spironolactone:
Spironolactone is a potassium-sparing diuretic commonly used in the treatment of heart failure. Unlike other diuretics, spironolactone works by antagonizing aldosterone, a hormone that promotes sodium and water retention and potassium excretion. By blocking aldosterone's action, spironolactone prevents the kidneys from excreting potassium, thus increasing potassium levels in the blood (hyperkalemia). Additionally, spironolactone can lead to hyponatremia (low sodium levels), as it also causes the kidneys to retain sodium and water, diluting sodium levels in the blood.

B) Furosemide:
Furosemide, a loop diuretic, is typically used in heart failure to remove excess fluid. It works by inhibiting the reabsorption of sodium, chloride, and potassium in the loop of Henle, which increases urine output. While furosemide can cause hypokalemia (low potassium levels) due to the increased excretion of potassium, it does not typically cause hyperkalemia.

C) Hydrochlorothiazide:
Hydrochlorothiazide is a thiazide diuretic, which works by inhibiting sodium and chloride reabsorption in the distal convoluted tubule of the kidney, leading to increased urine production. Thiazide diuretics can cause hypokalemia (low potassium levels) and hyponatremia (low sodium levels) due to the enhanced excretion of both electrolytes.

D) Metolazone:
Metolazone is also a thiazide-like diuretic that works similarly to hydrochlorothiazide. It can cause hypokalemia and hyponatremia, but like hydrochlorothiazide, it does not typically cause hyperkalemia. Metolazone is more potent than hydrochlorothiazide but still does not carry the risk of hyperkalemia like spironolactone does.

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A nurse is reviewing the EKG strip of a client who is hypertensive and is complaining of muscle weakness. Which of the following abnormalities on the clients EKG should the nurse interpret as a sign of hyperkalemia?

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