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Resistant Hypertension (RH) defined by Ambulatory blood pressure monitoring (ABPM) isn't so common. Prognostic CV by ABPM of RH is uncertain. Objective RH Population defined by ABPM, followed 5.9±5.0 years and prognostic value of ABPM for new CV events (CVe). Design and method ABPM-collected 1999–2019. Identified RH patients by ABPM. Obtained anthropometric, clinic, laboratorial data from the patient and clinical records. CVe defined by: stroke (ST) (Ischemic (STisq), haemorrhagic (SThs)), Coronary Event (CD), Other CV events (OCV) (acute heart failure (HF), peripheral arterial disease (PAD). Follow-up finished with event, last evaluation of the patient or death. Results 258 patients, follow-up – 5.9±5.0 years,158 males, mean age – 60.4±11 years. Diabetes Mellitus (DM) 45.3%, Dyslipidaemia 74.4%, Obesity 45.3%, Chronic Kidney Disease 37.2%, previous CVe (PCVe) 34.5%. Observed 68 CVe: 26 ST (21 STisq, 5 SThs), 21 CD, 21 OCV (15 HF, 6 PAD). 18 death (8 unknown, 1 infection, 2 cancer, 1 sudden death, 2 STisq, 1 CD, 3 HF). When compared those with event vs no-event (fig. 1), in T student to independent samples, those with event had larger left atrium (42.6±5.7 vs 40.2±4.7, p&amp;lt;0.05), lower creatinine clearance (mL/min/1.73m2) (63.6±34 vs 74.5±33). PCVe was significantly more prevalent on those with event (c 9.8, p&amp;lt;0.01). In a multivariate Cox analysis for the risk of CVe (adjusted to age, gender, DM, PCVe, glycemia, creatinine, number of antihypertensive), Day Pulse Pressure with cut-off 60mmHg was statically significant (HR 2.46 (95% CI 1.26–4.83), p&amp;lt;0.01). In Kaplan-Meier survival curve free of events, the best CV predictor obtained was the cut-off 60mmHg of PP (24h, Day, night PP), mostly Day PP-60mmHg (log rank 9.27, p&amp;lt;0.01) (fig. 2A). When analyzed for those who had Stroke, in the multivariate Cox analysis 24h SBP (p&amp;lt;0.05, HR 1.04 (95% CI 1.00–1.07), and night SBP (p&amp;lt;0.05, HR 1.03 (95% CI 1.00–1.06) were statically significant on top of age, gender, DM, PCVe, glycemia, creatinine, number of antihypertensive. In Kaplan-Meier survival curve free of events, the best CV predictor obtained was the cut-off 60mmHg PP, mostly Day PP 60mmHg (log rank 8.5 p&amp;lt;0.01) (fig. 2B). For those who had CD in the multivariate Cox analysis, adjusted for other variables, 24h SBP (p&amp;lt;0.05, HR 1.04 (95% CI 1.00–1.07), and night SBP (p&amp;lt;0.05 HR1.03 (95% CI 1.00–1.06) were statically significant. In Kaplan-Meier survival curve free of events, night PP 60mmHg predicted CD events (log rank 4.42 p&amp;lt;0.05) (fig. 2C). For OCV the multivariate Cox analysis, adjusted for other variables, 24h PP (p&amp;lt;0.05, HR 1.04 (95% CI 1.00–1.07) and night SBP (p&amp;lt;0.05, HR 1.03 (95% CI 1.00–1.06) were statically significant for new OCV. In Kaplan-Meier survival curve free of events, best predictor was mostly night PP 60mmHg (log rank 19, p&amp;lt;0.001) (fig. 2D). Conclusion In our sample of RH the definition by ABPM is essential. PP is the key prognosis for future CVe, special if analysed by the cut of PP-60 mmHg. Funding Acknowledgement Type of funding sources: None. Kaplan-Meier survival curves

Resistant hypertension must be defined by ambulatory blood pressure and pulse pressure is best predictor of new cardiovascular events