Related Experiment Video
Updated: Apr 8, 2026

Assessing Murine Resistance Artery Function Using Pressure Myography
Published on: June 7, 2013
Cumulative Effects of Several Target Organ Damages in Risk Assessment in Hypertension
Brahim Harbaoui1, Pierre-Yves Courand2, Alice Defforges3
1Cardiology Department, European Society of Hypertension Excellence Center, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France; Université Lyon-1, Villeurbanne, France; Génomique Fonctionnelle de l'Hypertension Artérielle, Lyon, France;
Insights
Screening for multiple target organ damages (TODs) in hypertension is crucial for predicting patient outcomes. Identifying several TODs significantly increases the risk of both all-cause and cardiovascular mortality, highlighting the need for comprehensive risk assessment.
Area of Science:
- Cardiology
- Nephrology
- Ophthalmology
Background:
- Prognostic value of multiple target organ damages (TODs) in hypertensive individuals is understudied.
- This study aimed to assess the prognostic significance of 3 TODs for 10-year survival in hypertensive patients.
Purpose of the Study:
- To evaluate the prognostic value of multiple target organ damages (TODs) in hypertensive patients.
- To estimate the impact of TODs on 10-year survival rates.
Main Methods:
- A cohort of 1,963 hypertensive patients was analyzed.
- Patients were assessed for previous cardiovascular disease (CVD) and three TODs: renal damage (MDRD <60ml/min or albuminuria >300mg/day), left ventricular hypertrophy (Sokolow index >3.5 mV), and advanced hypertensive retinopathy.
- The cohort was stratified into groups based on the number of TODs (0, 1, 2, 3) and previous CVD.
Main Results:
- Over 10 years, 418 deaths occurred, with 254 from cardiovascular causes.
- A progressive increase in risk was observed with a higher number of TODs.
- Hazard ratios for all-cause and cardiovascular death significantly increased with each additional TOD, with 3 TODs showing the highest risk.
Conclusions:
- Hypertensive patients with multiple TODs experience significantly worse outcomes.
- Screening for multiple TODs, particularly severe retinopathy in patients with left ventricular hypertrophy and renal damage, is essential for risk stratification.
Background:
The prognostic value of screening multiple target organ damages (TODs) in hypertensive subjects has not been extensively studied. We estimated the prognostic value of considering 3 TODs in estimating the 10-year survival in hypertensive subjects.
Methods:
At baseline 1,848 out of a cohort of 1,963 hypertensive patients had a previous cardiovascular disease (CVD) or assessments of 3 TODs: Modification in Diet in Renal Disease (MDRD) <60ml/min or albuminuria >300mg/day, Sokolow index >3.5 mV, and advanced hypertensive retinopathy (grades 3 and 4 of Keith-Wagener-Barker classification). The cohort was divided into 5 groups: 0 TOD (N = 978), 1 TOD (N = 308), 2 TODs (N = 94), 3 TODs (N = 30), and previous CVD (N = 438).
Results:
After 10 years of follow-up, we observed 418 deaths of which 254 from cardiovascular cause. The adjusted hazard ratios for the major cardiovascular risk factors showed a progressive risk associated with the number of TODs. For all-cause death, the hazard ratios [95% confidence intervals] vs. 0 TOD of the other 4 groups were 1.91 [1.39-2.63], 1.99 [1.28-3.10], 4.33 [2.42-7.72], and 3.09 [2.35-4.05], respectively. For cardiovascular death, the hazard ratios [95% confidence intervals] were of the same order of magnitude: 2.14 [1.38-3.32], 2.12 [1.15-3.89], 4.22 [1.83-9.72], and 4.24 [2.95-6.11], respectively.
Conclusions:
Our results indicate that hypertensive patients with several TODs had a worst outcome. Thus, it seems important to screen for multiple TODs in hypertension; especially check for severe hypertensive retinopathy in patients with left ventricular hypertrophy (LVH) and renal damage.
Related Concept Videos
Hypertension III: Clinical Manifestations and Diagnostic Studies
Hypertension II: Pathophysiology
Hypertension and Regulation of Blood Pressure
Drug Toxicity: Dose-Dependent Reactions
Toxic Reactions: Overview
Toxicity falls into two primary categories: local and systemic.
Local toxicity appears at the exposure site, such as protein denaturation caused by caustic substances.
In contrast, systemic toxicity requires the toxic agent's absorption and distribution,...
Hypertension I: Introduction
