title: Early use of beta-blockers attenuates systemic inflammatory response and lung oxygenation impairment after distal type acute aortic dissection.
abstract: We have reported that serum C-reactive protein (CRP) elevation is an independent predictor of lung oxygenation impairment (LOI) after distal type acute aortic dissection (AAD). Systemic activation of the inflammatory system after aortic injury may play a role in the development of LOI. The aim of this study is to clarify the effect of beta-blockers on systemic inflammation and the development of LOI after distal type AAD. A total of 49 patients, who were admitted with distal type AAD and treated conservatively, were examined. White blood cell (WBC) count, serum CRP level, and arterial blood gases were measured serially. Forty patients received beta-blocker treatment within 24 h of the onset, while 9 patients received no beta-blocker treatment. Maximum WBC count, maximum CRP level, lowest PaO(2)/FiO(2) (P/F) ratio, and patient background were compared between the two groups. There was no difference between the groups according to age, sex, coronary risk factors, blood pressure, serum level of CRP, WBC count, and oxygenation index on admission. Beta-blocker treatment was associated with lower maximum WBC count (P = 0.0028) and lower maximum serum CRP level (P = 0.0004). The minimum P/F ratio was higher in patients with beta-blocker treatment than in those without (P = 0.0076). Multivariate analysis revealed that administration of a beta-blocker was an independent negative determinant of LOI (P/F ratio < or = 200 mmHg). In conclusion, early use of beta-blockers prevented excessive inflammation and LOI after distal type AAD, suggesting a pleiotropic effect of beta-blockers on the inflammatory response after AAD.
authors.affiliation: Division of Cardiology, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Jo
authors.forename: Toshihisa
authors.initials: T
authors.lastname: Anzai
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Sugano
authors.forename: Kotaro
authors.initials: K
authors.lastname: Naito
authors.forename: Koji
authors.initials: K
authors.lastname: Ueno
authors.forename: Takashi
authors.initials: T
authors.lastname: Kohno
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Yoshikawa
authors.forename: Satoshi
authors.initials: S
authors.lastname: Ogawa
mesh_terms: D000208:Acute Disease; D000319:Adrenergic beta-Antagonists / Q000627:therapeutic use*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000784:Aortic Dissection / Q000150:complications* / Q000000981:diagnostic imaging; D001014:Aortic Aneurysm / Q000150:complications* / Q000000981:diagnostic imaging; D001784:Blood Gas Analysis; D002097:C-Reactive Protein / Q000378:metabolism*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007118:Immunoassay; D007958:Leukocyte Count; D008297:Male; D008875:Middle Aged; D010101:Oxygen Consumption / Q000187:drug effects; D012128:Respiratory Distress Syndrome / Q000188:drug therapy* / Q000209:etiology / Q000378:metabolism; D012189:Retrospective Studies; D018746:Systemic Inflammatory Response Syndrome / Q000097:blood / Q000188:drug therapy* / Q000209:etiology; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome
chemical_list: D000319:Adrenergic beta-Antagonists; D002097:C-Reactive Protein