To Prevent Kidney Disease: Make Your Check List and Read It Twice

Apr 1, 2001

To prevent or slow progression to end-stage renal disease, Robert Stanton, MD, chief of nephrology at Joslin Diabetes Center in Boston recommends taking the following steps:

  • Maintaining an HbA1c near 7% or lower.
  • Maintaining blood pressure at 125/75 mm Hg.
  • Using ACE inhibitors or an angiotensin receptor blocker.
  • Eliminating smoking.
  • Restricting dietary intake of animal protein to 0.6 to 0.8 gm per kilogram of body weight. One kilogram=2.2 pounds. Therefore, a 170- pound person (77.11 kgs) could eat 46-62 grams of protein per day.
  • Treating urinary tract and bladder infections promptly.
  • Checking albumin-to-creatinine ratios two to four times per year, or every time you see your physician.

Stanton adds that a program of nutritional counseling and exercise is important to achieving glucose and blood pressure control.

A Little Goes A Long Way—Kidneys Benefit from Small Amounts of Kidney Medicine

You may not have to take large amounts of an ACE inhibitor to enjoy its kidney-protecting properties, says a study focusing on 1.25 mg and 5 mg doses of the ACE inhibitor ramipril (Altace).

Even low doses of Altace can reduce microalbuminuria in people with type 1 diabetes who do not have high blood pressure, say researchers in a study published in the December 2000 issue of Diabetes Care. Microalbuminuria, or small amounts of protein in the urine, is a marker for both kidney disease and heart problems.

Researchers studied 140 people with type 1 diabetes and normal blood pressure over a two-year period. Those in the study had urinary albumin rates between 20 and 200 picograms or trillionths of a gram per minute (pg/min). Early signs of microalbuminuria or leakage of protein in the urine was 30 to 300 mg in 24 hours or 20-200 pg/min in a timed overnight sample. One group took a placebo, while two other groups took either 1.25 mg or 5 mg of Altace.

In the placebo group, the albumin excretion rate increased from an average of 54 to 70 pg/min, while declining from 49 to 36 pg/min on the 1.25 mg dose and from 45 to 38 pg/min on the 5 mg dose.

Researchers say it would be both wise and more cost-effective for health-care providers to begin treatment with a low dose of an ACE inhibitor and increase it if the albumin excretion rate increases.

What Is a Normal Lab Value for Creatinine?

Elevation in creatinine, which is a normal non-protein component of blood, can signal kidney damage.

According to Robert C. Stanton, MD, chief of nephrology at Joslin Diabetes Center in Boston, normal lab values are:

  • .50 to 1.4 mg/dl for creatinine.
  • 0 to 30 mcg/mg for a microalbumin-to-creatinine ratio.

Stanton says patients are generally started on medication when the microalbuminuria reaches 30 mcg/mg.

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Categories: A1c Test, Diabetes, Diabetes, Kidney Care (Nephropathy), Type 1 Issues

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