Polysomnography – ABC CARDIOL

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Brief Communication

Risk Correlation between Obstructive Sleep Apnea and Heart Failure in Primary Care

Adson Renato Leite et al. Erica de Abreu Macedo Antonio José Lagoeiro Jorge Maria Luiza Garcia Rosa

Introduction

Obstructive sleep apnea syndrome (OSAS), a chronic, progressive disease, with high mortality and morbidity, which has been associated with cardiovascular diseases, including heart failure (HF).

The pathophysiological changes related to OSAS and its contribution to cardiovascular risk are consequences of increased sympathetic activity, increased oxidative stress, pro-inflammatory changes and endothelial dysfunction.

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Artigo Original

ABPM in COPD patients with sleep desaturation

Neila Anders Aidar et al. Márcio Alberto Carvalho da Silva César Augusto Melo e Silva Pedro Nery Ferreira Júnior Paulo Tavares

BACKGROUND: Sleep hypoxemia may change blood pressure by sympathetic activation. Few studies have analyzed blood pressure parameters in COPD patients who do not present sleep apnea, but do present sleep desaturation. OBJECTIVES: To analyze blood pressure parameters in COPD patients with sleep desaturation not caused by apnea. METHODS: Thirteen patients with COPD underwent spirometry, blood gas, polysomnography and ABPM for blood pressure evaluation. Fourteen patients without COPD underwent spirometry, oximetry and ABPM. Blood pressure analyses were carried out both during wakefulness and sleep. Both groups were comprised of patients with no history of hypertension. RESULTS: The two groups were similar as regards age, height, weight, and body mass index. A significant difference (p<0.05) was found between blood pressure levels during the wakefulness, sleep, 24-hour and sleep dip periods. Higher blood pressure levels were observed in patients with COPD, except for diastolic levels during wakefulness and maximum values during sleep and in the 24 hours. Sleep dip in the COPD group was attenuated, whereas physiological dip was observed in the control group, with lower blood pressure levels. CONCLUSIONS: Systolic and diastolic blood pressure levels in the COPD group were higher than those of the control group, with a significant difference found for all periods studied, except for diastolic levels during wakefulness and in the 24 hours. We can conclude that the group of COPD patients with sleep desaturation has significantly higher blood pressure levels than the control group.

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Risk Correlation between Obstructive Sleep Apnea and Heart Failure in Primary Care

Introduction

ABPM in COPD patients with sleep desaturation

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Electronic Document Format (Vancouver)

Electronic Document Format (ABNT)

Electronic Document Format (APA)

Electronic Document Format (ISO)