What condition is most commonly found in patients with an estimated GFR less than 60 mL/min?

When considering patients with an estimated glomerular filtration rate (GFR) of less than 60 mL/min, hypertension is commonly observed. This condition is often associated with chronic kidney disease and can directly result from impaired kidney function. The kidneys play a significant role in regulating blood pressure through various mechanisms, including the renin-angiotensin-aldosterone system. As kidney function declines, these regulatory processes become less effective, leading to elevated blood pressure levels.

In contrast, the other options are not as directly linked to a GFR below 60 mL/min. Weakness and drooping on one side of the body may suggest neurological issues, such as a stroke, which are not primarily caused by changes in kidney function. A history of heart attacks does involve cardiovascular risk factors, but it does not specifically correlate with kidney function to the same extent as hypertension. Kidney stones treated with lithotripsy are a different aspect of renal health and usually relate to the presence of obstruction or urinary retention rather than chronic kidney disease defined by a low GFR. Therefore, the connection between low GFR and hypertension makes it the most relevant condition in this scenario.