SIMPLICITY HTN -3: subgroup analysis identifies potential confounders

Initial studies showed a blood pressure significant reduction to 3 years in patients with resistant hypertension, while the SIMPLICITY HTN -3 with a larger number of patients compared to a group with “Sham” procedure (renal angiography with conscious sedation) could not confirm the results.

The aim of this study was to evaluate the possible confounding factors that could have affected the efficacy results. The analysis showed that 80 % of patients in both groups were receiving a stable drug therapy for at least 6 months prior to randomization. 40% of patients also in both groups received an adjustment of medication at follow up. Subgroup analysis according to patient race (African American versus non-African American) showed a significant drop in pressure in the non- African group (-15.2 versus -8.6, P = 0.012). In addition, there were differences according to the number of quadrants underwent denervation, whereas it was expected, the largest decrease in pressure was observed in those who received denervation in a greater number of quadrants.

Conclusion

We identified potential confounding factors such as changes in antihypertensive medication, differences in the study population and variability in process technique.

David Kandzari
2014-05-23

Title: Symplicity HTN-3: insights from the subgroup analysis

More articles by this author

SOURCE XT: Results at 2 years of SAPIEN XT valve

Multicenter prospective study included 2688 patients with a mean age of 81.4 years and 20.5 EuroScore. The all-cause mortality at 2 years was 27.7%...

NOBORI II: Final 5-year results of drug-eluting stent with bio-absorbable polymer

This study evaluated the performance of Nobori biolimus bio-absorbable polymer stent in real-world patients. A total of 3067 consecutive patients followed up to 5...

TRYTON dedicated bifurcation stent in left main coronary artery

TRYTON is a cobalt chromium device specifically dedicated for bifurcation lesions to be implanted in the side branch. Circumflex artery is the major lateral...

UK TAVI Registry: Long-term results of TAVI in the UK

This record has been created in order to evaluate the results of percutaneous aortic valve replacement in the UK and currently includes more than...

LEAVE A REPLY

Please enter your comment!
Please enter your name here

Related Articles

SOLACI Sessionsspot_img

Recent Articles

RACE Trial: Effect of Balloon Pulmonary Angioplasty and Riociguat on Right Ventricular Afterload and Function in Chronic Thromboembolic Pulmonary Hypertension

Even though pulmonary endarterectomy is the treatment of choice for chronic thromboembolic pulmonary hypertension (CTEPH), up to 40% of patients are not candidates because...

iFR- vs. FFR-Guided Coronary Revascularization: 5-Year Clinical Outcomes

The assessment of coronary stenosis using coronary physiology has become a key tool in guiding revascularization. The two most widely used techniques are fractional...

TAVR in Small Annuli: What Valve Should We Use?

One of the major challenges of severe aortic stenosis are patients with small aortic annuli, defined as ≤430 mm² aortic valve area. This condition...