Diabetes care · 2014
A novel association between nondipping and painful diabetic polyneuropathy.
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D'Amato Cinzia, Morganti Roberto, Di Gennaro Federica, Greco Carla, Marfia Girolama A, Spallone Vincenza
Аннотация
OBJECTIVE: We hypothesized the meaningful coexistence of neuropathic pain and nondipping in painful diabetic polyneuropathy (PDPN).
RESEARCH DESIGN AND METHODS: In 113 patients with PDPN, with painless diabetic polyneuropathy (DPN(+)) and without DPN (DPN(-)), neuropathic pain, sleep, risk for obstructive sleep apnea (OSA), autonomic function, and blood pressure (BP) circadian pattern were assessed using the Douleur Neuropathique en 4 Questions (DN4), the Medical Outcomes Study Sleep Scale, the Berlin Questionnaire, cardiovascular reflex tests, and ambulatory BP monitoring.
RESULTS: Patients with PDPN showed higher nighttime systolic BP (130.4 ± 15.6 mmHg) than both DPN(-) (119.9 ± 10.6 mmHg; P < 0.0001) and DPN(+) patients (124.2 ± 12.3 mmHg; P < 0.05), and lower day-night difference (∆) in systolic BP (5.5 ± 6.5 vs. 8.6 ± 7.7%; P < 0.05) and diastolic BP than DPN(-) patients. In a stepwise regression analysis, orthostatic hypotension, high risk for OSA, and PDPN (DN4 interview) were independent determinants of ∆ in systolic BP (r = 0.46; P = 0.0001), ∆ in diastolic BP, and nighttime systolic BP.
CONCLUSIONS: PDPN is associated with higher nocturnal systolic BP and impaired BP circadian pattern independent of pain-related comorbidities, suggesting a condition of high cardiovascular risk.
RESEARCH DESIGN AND METHODS: In 113 patients with PDPN, with painless diabetic polyneuropathy (DPN(+)) and without DPN (DPN(-)), neuropathic pain, sleep, risk for obstructive sleep apnea (OSA), autonomic function, and blood pressure (BP) circadian pattern were assessed using the Douleur Neuropathique en 4 Questions (DN4), the Medical Outcomes Study Sleep Scale, the Berlin Questionnaire, cardiovascular reflex tests, and ambulatory BP monitoring.
RESULTS: Patients with PDPN showed higher nighttime systolic BP (130.4 ± 15.6 mmHg) than both DPN(-) (119.9 ± 10.6 mmHg; P < 0.0001) and DPN(+) patients (124.2 ± 12.3 mmHg; P < 0.05), and lower day-night difference (∆) in systolic BP (5.5 ± 6.5 vs. 8.6 ± 7.7%; P < 0.05) and diastolic BP than DPN(-) patients. In a stepwise regression analysis, orthostatic hypotension, high risk for OSA, and PDPN (DN4 interview) were independent determinants of ∆ in systolic BP (r = 0.46; P = 0.0001), ∆ in diastolic BP, and nighttime systolic BP.
CONCLUSIONS: PDPN is associated with higher nocturnal systolic BP and impaired BP circadian pattern independent of pain-related comorbidities, suggesting a condition of high cardiovascular risk.