Transcranial Doppler to assess sepsis-associated encephalopathy in critically ill patients

被引:55
|
作者
Pierrakos, Charalampos [1 ]
Attou, Rachid [1 ]
Decorte, Laurence [2 ]
Kolyviras, Athanasios [1 ]
Malinverni, Stefano [1 ]
Gottignies, Philippe [1 ]
Devriendt, Jacques [1 ]
De Bels, David [1 ]
机构
[1] Univ Libre Brussels, Brugmann Univ Hosp, Dept Intens Care, B-1020 Brussels, Belgium
[2] Univ Libre Brussels, Brugmann Univ Hosp, Dept Geriatr, B-1020 Brussels, Belgium
来源
BMC ANESTHESIOLOGY | 2014年 / 14卷
关键词
SEPTIC ENCEPHALOPATHY; PULSATILITY INDEX; CEREBRAL MICROCIRCULATION; BLOOD-FLOW; BRAIN; HEMODYNAMICS; PATHOPHYSIOLOGY; AUTOREGULATION; PERITONITIS; DYSFUNCTION;
D O I
10.1186/1471-2253-14-45
中图分类号
R614 [麻醉学];
学科分类号
100217 ;
摘要
Background: Transcranial Doppler can detect cerebral perfusion alteration in septic patients. We correlate static Transcranial Doppler findings with clinical signs of sepsis-associated encephalopathy. Methods: Forty septic patients were examined with Transcranial Doppler on the first and third day of sepsis diagnosis. The pulsatility index (PI) and cerebral blood flow index (CBFi) were calculated by blood velocity in the middle cerebral artery (cm/sec). Patients underwent a daily cognitive assessment with the Confusion Assessment Method for the Intensive Care Unit (CAM-ICU) test. Results: Twenty-one patients (55%) were found to present confusion. The majority of the patients presented a PI > 1.1 (76%). PI on the first day (but not the third day) could predict a positive CAM-ICU test in septic patients (PI cut-off: 1.3, AUC: 0.905, p < 0.01, sensitivity: 95%, specificity: 88%, AUC: 0.618, p = 0.24). Multivariable analysis showed that PI on the first day is related to a positive CAM-ICU test independent of age and APACHE II score (OR: 5.6, 95% CI: 1.1-29, p = 0.03). A decrease of the PI on the third day was observed in the group that presented initially high PI (>1.3) (2.2 +/- 0.71 vs. 1.81 +/- 0.64; p = 0.02). On the other hand, an increase in PI was observed in the other patients (1.01 +/- 0.15 vs. 1.58 +/- 0.57; p < 0.01). On only the first day, the mean blood velocity in the middle cerebral artery and CBFi were found to be lower in those patients with a high initial PI (36 +/- 21 vs. 62 +/- 28 cm/sec; p < 0.01, 328 +/- 101 vs. 581 +/- 108; p < 0.01, respectively). Conclusions: Cerebral perfusion disturbance observed with Transcranial Doppler could explain clinical symptoms of sepsis-associated encephalopathy.
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页数:6
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