[The therapeutic management and economic burden of patients with chronic kidney disease non-dialysis-dependent with anemia and ESA treated: findings from a real-world study in Italy].

Background. This real-world study aimed to provide insights on the characteristics, drug utilization, and economic burden of chronic kidney disease non-dialysis-dependent (NDD-CKD) patients with anemia prescribed Erythropoiesis Stimulating Agents (ESA) in Italian clinical practice settings. Methods. A retrospective analysis was performed based on administrative and laboratory databases covering around 1.5 million subjects across Italy. Adult patients with a record for NDD-CKD stage 3a-5 and anemia during 2014-2016 were identified. Eligibility to ESA was defined as the presence of ≥ 2 records of Hb < 11 g/dL over 6 months, and patients eligible and currently treated with ESA were included. Results. Overall, 101,143 NDD-CKD patients were screened for inclusion, of which 40,020 were anemic. A total of 25,360 anemic patients were eligible to ESA treatment and 3,238 (12.8%) were prescribed ESA and included. The mean age was 76.9 years and 51.1% was male. More frequently observed comorbidities were hypertension (over 90% in each stage), followed by diabetes (37.8-43.2%) and cardiovascular condition (20.5-28.9%). Adherence to ESA was observed in 47.9% of patients, with a downward trend while progressing across stages (from 65.8% stage 3a to 35% stage 5). A consistent proportion of patients did not have nephrology visits during the 2 years of follow-up. Costs were mainly due to all drugs (€4,391) followed by all-cause hospitalization (€3,591) and laboratory tests (€1,460). Conclusions. Findings from the study highlight an under-use of ESA in the management of anemia in NDD-CKD as well as a sub-optimal adherence to ESA and showed a great economic burden for anemic NDD-CKD patients.

Economic evaluation of angiotensin receptor blockers in type 2 diabetes, hypertension, and nephropathy.

There is a rising incidence and prevalence of ESRD as a result of diabetes, with poor outcome and growing costs. Recently, two large trials, the Irbesartan Diabetic Nephropathy Trial (IDNT) and Reduction of Endpoints in NIDDM with the Angiotensin II Antagonist Losartan (RENAAL), showed that angiotensin receptor blockers (ARB) are more effective than traditional antihypertensive therapies at reducing progression toward ESRD in hypertensive patients with type 2 diabetes and overt nephropathy, regardless of changes in BP. The results of these two trials were used to compare the costs of ARB with those of renal replacement therapy (dialysis and renal transplantation) in an effort to establish whether ARB are cost-saving because they delay ESRD. Two different pharmacoeconomic approaches were used. With regard to the RENAAL trial, the number of ESRD days on losartan therapy as compared with the number of ESRD days on standard antihypertensive therapy was calculated, and the difference between the two was combined with the costs of ESRD. In the IDNT trial, Markov models were applied to assess the economic impact of irbesartan and to extrapolate future clinical and cost outcomes. Several economic analyses were performed in the United States and in European countries. Applying pharmacoeconomic models showed that treatment with ARB was associated with a greater improvement in life expectancy and lower total costs compared with amlodipine and standard antihypertensive therapy. Therefore, treating patients with type 2 diabetes, nephropathy, and hypertension with ARB is life- and cost-saving compared with traditional antihypertensive therapy.

Optimizing global risk evaluation in primary hypertension: the role of microalbuminuria and cardiovascular ultrasonography.

OBJECTIVE: To assess the impact and cost-effectiveness of microalbuminuria and cardiovascular ultrasonography in evaluating the risk profile in primary hypertension. METHODS: Four hundred and five untreated patients with primary hypertension underwent a routine, traditional work-up plus evaluation of albuminuria and ultrasound (US) assessment of cardiac and vascular structures. Albuminuria was measured as the albumin to creatinine ratio in three non-consecutive first-morning urine samples. Left ventricular mass index was assessed by MB-mode echocardiography and carotid intima-media thickness by high-resolution US scan. The impact of these tests on patient risk classes, as indicated by European Society of Hypertension-European Society of Cardiology (ESH-ESC) guidelines, was assessed with respect to their cost and sensitivity. RESULTS: The prevalence of microalbuminuria, left ventricular hypertrophy and carotid intima-media thickening or carotid plaque was 13, 49 and 32%, respectively. The combined use of albuminuria, cardiac and vascular ultrasonography led to the detection of a significantly higher percentage of patients at high/very high risk. The three tests differ in sensitivity (albuminuria, 20%; echocardiography, 65%; and carotid ultrasound, 41%). The signs of target organ damage (TOD) only partly cluster within the same subgroup of patients and, thus, all three tests should be performed in order to maximize the sensitivity of the evaluation process. The diagnostic algorithm yielding the lowest cost per detected case of TOD is the search for microalbuminuria followed by cardiac and carotid ultrasound assessment. CONCLUSIONS: Ultrasonographic detection of TOD is a sensitive tool in the identification of high-risk patients, but should be preceded by a routine search for microalbuminuria in order to optimize the cost-effectiveness of the diagnostic work-up.

Cardiovascular and renal risk assessment as a guide for treatment in primary hypertension.

BP levels per se may be an unreliable indicator of risk in the individual patient. In fact, the global cardiovascular profile, including the presence and degree of target organ damage, is a better predictor of future events and, therefore, should be used to choose both treatment and BP goals. However, the prevalence of target organ damage and therefore the percentage of patients who are at risk very much depends on the diagnostic techniques used. However, as a result of the high prevalence of hypertension and its financial impact on public health systems, limiting unnecessary and extensive diagnostic tests also should be a priority. The routine search for microalbuminuria may lead to the detection of a significantly greater percentage of patients who are at high risk while contributing the optimization of the cost-effectiveness of diagnostic workup in hypertensive patients.