# A nurse is assessing a patient with suspected hydronephrosis. Which assessment finding would be most indicative of this condition? > source: MyMerci (mymerci.kr) > url: https://mymerci.kr/pages/nclex_q.php?qn_id=541484 > language: ko > subject: Adult Health ## 문제 A nurse is assessing a patient with suspected hydronephrosis. Which assessment finding would be most indicative of this condition? ## 보기 1. Decreased urine output with dark amber coloration 2. Flank pain that worsens with movement and palpable kidney enlargement **✔ 정답** 3. Frequent urination with burning sensation during voiding 4. Lower abdominal cramping with urgency and incontinence **정답: 2** ## 해설 Hydronephrosis is characterized by flank pain and palpable kidney enlargement due to obstruction and fluid accumulation. Other options represent symptoms of urinary tract infections or other urinary issues. ## 심화 해설 Understanding Hydronephrosis and Its Clinical Presentation Hydronephrosis refers to the distension and dilation of the renal pelvis and calyces, typically resulting from an obstruction to the free flow of urine from the kidney. This obstruction can occur at any point along the urinary tract, from the ureteropelvic junction to the urethral meatus. The resulting back-pressure of urine can progressively damage the renal parenchyma, leading to impaired kidney function if not promptly identified and relieved. For the NCLEX-RN, recognizing the classic clinical presentation is essential for early nursing assessment and intervention. A key characteristic of hydronephrosis is flank pain, which is often described as a dull, aching discomfort in the costovertebral angle (CVA) or flank region. This pain arises from the stretching of the renal capsule as the collecting system becomes distended with urine. The pain pattern is particularly telling: it is typically constant but can be intermittent, and it is frequently exacerbated by movement or direct palpation over the affected kidney. This finding aligns directly with the case reports provided. For instance, a 35-year-old patient with testicular vein syndrome, a rare cause of ureteral compression, presented with a 2-year history of intermittent left flank pain as the primary symptom, without any urinary complaints [1]. Similarly, a young child with a congenital anomaly causing severe hydronephrosis experienced intermittent severe left flank pain [2]. This consistent presentation underscores that flank pain, particularly when it is the dominant symptom and is reproducible with movement or palpation, is a highly indicative assessment finding. Differentiating Hydronephrosis from Other Urinary Conditions To correctly identify the most indicative finding, it is crucial to differentiate the symptom profile of hydronephrosis from other common urinary disorders. - Decreased urine output with concentrated urine: This finding is more suggestive of prerenal acute kidney injury (e.g., from dehydration or hypoperfusion) or intrinsic renal failure, where the kidney's filtering capacity is compromised. In hydronephrosis, the obstruction is post-renal. Urine is still produced, but its drainage is blocked. Output may eventually decrease if the obstruction is complete and bilateral, but the hallmark is pain from distension, not a primary reduction in urine production. The case reports highlight presentations without mention of oliguria, with one patient specifically having no urinary symptoms [1]. - Frequent urination with burning sensation: This constellation of symptoms is classic for a lower urinary tract infection (UTI), such as cystitis or urethritis. The dysuria, urgency, and frequency are caused by inflammation of the bladder or urethral mucosa. While a UTI can be a complication of a long-standing obstruction due to urinary stasis, it is not the primary, defining clinical presentation of the hydronephrosis itself. - Blood in urine with fever and chills: This presentation is a red flag for an upper UTI, specifically pyelonephritis, or potentially an obstructing infected stone (obstructive pyelonephritis). The systemic symptoms of fever and chills indicate an infectious and inflammatory process within the renal parenchyma. While hydronephrosis can be caused by an obstructing stone, and that condition can become secondarily infected, the combination of hematuria and systemic signs of infection points more directly to an infectious or stone-related etiology. The case of ureteral endometriosis, for example, describes a "silent" progression to severe hydronephrosis with nonspecific symptoms, not an acute febrile illness [3]. Therefore, the finding most directly linked to the mechanical distension of the renal capsule, which is the core pathophysiological event in hydronephrosis, is flank pain that worsens with movement and palpation. This is a direct consequence of the obstruction, as seen in cases ranging from vascular compression [1] to congenital anomalies [2] and infiltrative disease [3].References (research sources) - [1]Testicular vein syndrome: hydronephrosis secondary to ureteral compression-a case report.Case reportAl-Bitar A, Ghosen A, Sandouk H. (2026) · DOI: 10.1186/s13256-026-05874-7 - [2]Incidental ureteral triplication discovered during surgery for severe hydronephrosis: a case report.Case reportShafiqi M, Yama M, Moghul D. (2026) · DOI: 10.1097/rc9.0000000000000507 - [3]Silent but Destructive: Ureteral Deep Infiltrating Endometriosis Progressing to Renal Injury - A Case Report.Case reportAsmara EC, Rachmawati A, Nisa AS, Syam HH. (2026) · DOI: 10.2147/ijwh.s605680 ## 임상 시나리오 Clinical Guide: Assessing for Hydronephrosis When a patient presents with suspected hydronephrosis, the nurse's physical assessment is critical for early recognition. The hallmark finding is flank pain that intensifies with movement, coupled with a palpable kidney mass. This occurs because an obstruction blocks urine outflow, causing back-pressure that stretches the renal capsule. Focused Assessment Steps - **Pain Characterization:** Ask the patient to describe the location and quality of pain. Hydronephrosis typically produces a dull, constant ache in the flank or costovertebral angle (CVA). Document if the pain worsens with ambulation or position changes, as movement can shift an obstructing stone or increase intra-abdominal pressure. - **Deep Palpation:** With the patient supine, gently palpate the abdomen and flank. An enlarged, fluid-filled kidney may be felt as a smooth, firm mass. Avoid aggressive palpation if a tumor is suspected. Compare bilaterally, noting any asymmetry or tenderness. - **CVA Tenderness Assessment:** Place one hand flat over the costovertebral angle and strike it with the ulnar surface of your other fist. Significant pain upon percussion strongly suggests renal inflammation or capsular distension. Key Nursing Actions - **Monitor Output:** Strict intake and output records are essential. While output may be normal or decreased, sudden anuria suggests complete obstruction, a urological emergency. - **Infection Surveillance:** Urinary stasis predisposes to infection. Monitor for fever, chills, and cloudy or foul-smelling urine. Obtain a urinalysis and culture as ordered. - **Pain Management:** Administer analgesics as prescribed, typically NSAIDs for renal colic, and position the patient for comfort. Avoid heavy sedation before a definitive diagnosis is made. - **Prepare for Imaging:** Anticipate orders for a renal ultrasound or non-contrast CT scan to confirm the diagnosis and locate the obstruction level. Ensure the patient understands NPO requirements if contrast is needed. **Clinical Pearl:** A palpable kidney in an adult is abnormal and warrants immediate reporting. Coupled with movement-aggravated flank pain, it is a high-yield indicator of significant obstruction requiring prompt decompression to preserve renal function. ## 핵심 개념 - **Hydronephrosis** — Distension of the renal pelvis and calyces due to urine accumulation from obstructed outflow, leading to increased pressure and potential kidney damage. - **Renal Capsule Distension** — Stretching of the fibrous outer layer of the kidney caused by internal swelling, producing a dull, aching flank pain that worsens with movement. - **Costovertebral Angle (CVA) Tenderness** — Pain elicited by percussion over the costovertebral angle, a common assessment finding in kidney infection or obstruction like hydronephrosis. - **Urinary Stasis** — Stagnation of urine flow, increasing the risk of infection and stone formation, and a primary consequence of obstructive uropathy. - **Palpable Kidney** — A physical exam finding where the enlarged, fluid-filled kidney can be felt during deep palpation, indicating significant hydronephrosis or a renal mass. ## 같은 주제 문제 - [A nurse is assessing a patient with suspected hydronephrosis. 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