Nokea
When assessing the scrotum of a male patient, the nurse notices the presence of multiple firm, nontender, yellow 1-cm nodules. The nurse knows that these nodules are most likely:
- A. From urethritis.
- B. Sebaceous cysts.
- C. Subcutaneous plaques.
- D. COM
Correct Answer: B
Rationale: The correct answer is B: Sebaceous cysts. Sebaceous cysts are commonly seen as firm, nontender, yellow nodules in the scrotum. They are benign growths formed from blocked sebaceous glands. Urethritis (A) would present with symptoms such as pain or burning during urination, not as nodules on the scrotum. Subcutaneous plaques (C) are typically seen in conditions like Peyronie's disease, not as discrete nodules. COM (D) is not a recognized term in this context.
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A 20 year old patient presented to the ER with headache, stiff neck and fever for 3 days and is diagnosed with bacterial meningitis. Which one of the following antibiotics is the best choice to treat meningitis?
- A. Cefuroxime
- B. Cephalexin
- C. Cefotaxime
- D. Cefdinir
Correct Answer: C
Rationale: The correct answer is Cefotaxime (C) because it is a third-generation cephalosporin with excellent penetration into the cerebrospinal fluid, making it effective against bacterial meningitis pathogens. Cefotaxime covers a broad spectrum of bacteria commonly causing meningitis, including Streptococcus pneumoniae and Neisseria meningitidis.
A: Cefuroxime (A) is not the best choice as it has limited activity against some of the common pathogens causing meningitis.
B: Cephalexin (B) is a first-generation cephalosporin with poor central nervous system penetration and limited activity against meningitis pathogens.
D: Cefdinir (D) is a third-generation cephalosporin but is not the preferred choice for treating bacterial meningitis due to its inferior CNS penetration compared to cefotaxime.
A nurse is caring for a 73-year-old patient with a renal dysfunction. When reviewing laboratory results for urethral obstruction related to prostatic enlargement. this patient, the nurse interprets the presence of which When planning this patients care, the nurse should be substances in the urine as most suggestive of aware of the consequent risk of what complication?
- A. Urinary tract infection
- B. Potassium and sodium
- C. Enuresis
- D. Bicarbonate and urea
Correct Answer: A
Rationale: The correct answer is A: Urinary tract infection. In patients with urethral obstruction, the presence of substances in the urine such as bacteria, leukocytes, and nitrites indicates a high likelihood of urinary tract infection. The obstruction can lead to stasis of urine, providing an ideal environment for bacterial growth. This increases the risk of infection spreading to the kidneys, causing pyelonephritis or sepsis. Therefore, the nurse should be vigilant in monitoring for signs of infection and promptly initiate appropriate treatment to prevent complications.
Summary:
B: Potassium and sodium - While electrolyte imbalance can occur in renal dysfunction, it is not directly related to urethral obstruction or suggestive of a urinary tract infection.
C: Enuresis - Enuresis refers to involuntary urination, which is not directly related to the presence of substances in the urine or indicative of urinary tract infection.
D: Bicarbonate and urea - While these substances are relevant in assessing renal function, their
Which of the following substances does NOT NOT normally be expected to appear in normally pass through from glomerular urine? capillaries into the filtrate?
- A. water
- B. albumin
- C. urea
- D. sodium ions
Correct Answer: B
Rationale: The correct answer is B: albumin. Glomerular capillaries have a filtration barrier that prevents large molecules like albumin from passing into the filtrate. Water (A), urea (C), and sodium ions (D) are smaller molecules that can pass through the filtration barrier and are normally found in the filtrate. Albumin, being a large protein molecule, is normally retained in the blood and not expected to appear in the filtrate. This is essential for maintaining proper blood composition and oncotic pressure.
Which macrolide antibiotic that can be given once a day for 3 days for * empirical treatment of ENT, respiratory and genital infections?
- A. Erythromycin
- B. Azithromycin
- C. Clarithromycin
- D. Roxithromycin
Correct Answer: B
Rationale: The correct answer is B: Azithromycin. It has a long half-life allowing for once-daily dosing for 3 days. Azithromycin is effective against common ENT, respiratory, and genital infections.
Rationale:
A: Erythromycin requires more frequent dosing due to shorter half-life.
C: Clarithromycin is not typically given once a day for 3 days.
D: Roxithromycin is less commonly used for these infections and has a shorter half-life.
The renin-angiotensin-aldosterone system (RAAS) is essential in regulating blood pressure. Which of the following hormones involved in RAAS is produced by the kidney?
- A. Renin
- B. Angiotensin I
- C. Angiotensin II
- D. Aldosterone
Correct Answer: A
Rationale: Rationale: Renin is produced and released by the kidney in response to low blood pressure or low sodium levels. Renin initiates the RAAS cascade by converting angiotensinogen to angiotensin I. Angiotensin I is then converted to angiotensin II, leading to vasoconstriction and aldosterone release. Aldosterone, produced by the adrenal glands, promotes sodium and water retention. Therefore, choice A is correct as renin is the hormone produced by the kidney to regulate blood pressure. Choices B, C, and D are incorrect as they are downstream products of the RAAS cascade and are not directly produced by the kidney.