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4.
Chest ; 127(5): 1749-51, 2005 May.
Article in English | MEDLINE | ID: mdl-15888855

ABSTRACT

STUDY OBJECTIVE: To assess the agreement between bedside glucose (bGlu) measurements and laboratory plasma glucose (pGlu) measurements in the ICU setting. DESIGN: Retrospective study. SETTING: ICU of a tertiary academic medical center. PATIENTS: One hundred ninety-seven patients admitted to the ICU from January through December 2002 who underwent 816 simultaneous bGlu and pGlu measurements. INTERVENTIONS: None. MEASUREMENTS AND RESULTS: To calculate the agreement between the two methods of glucose measurement, the mean difference was obtained, and the limits of the agreement were calculated as the mean difference +/- 2 SDs. On 767 occasions, the mean bGlu was 159 mg/dL and the mean pGlu was 151 mg/dL (p < 0.001). The mean difference between the two techniques was 7.9 mg/dL (SD, 17.6 mg/dL), and the limits of agreement were + 43.1 and -27.2. On 31 occasions, the bGlu was reported as > 400 mg/dL, and in these cases the mean pGlu was 423 mg/dL (range, 300 to 900 mg/dL). On 18 occasions, the bGlu was reported as < 50 mg/dL, and in these cases the mean pGlu was 66.9 mg/dL (range, 13 to 198 mg/dL). CONCLUSIONS: On average, bGlu provides a reasonable estimate for pGlu. However, for the individual patient, bGlu gives an unreliable estimate for pGlu. All of those taking care of critically ill patients should be aware of the limitations of bedside glucometry.


Subject(s)
Blood Glucose/analysis , Intensive Care Units , Point-of-Care Systems , Humans , Reproducibility of Results , Retrospective Studies
5.
Am J Hypertens ; 18(3): 398-402, 2005 Mar.
Article in English | MEDLINE | ID: mdl-15797660

ABSTRACT

BACKGROUND: Differences between the antihypertensive responses to drug therapy measured by office blood pressure (OBP) and ambulatory blood pressure monitoring (ABPM) techniques have been noted but rarely analyzed. We studied whether the OBP and 24-h ABPM responses to hydrochlorothiazide differ and, if so, the relevance of these differences. METHODS: The OBP and ABPM responses to hydrochlorothiazide (25 mg/d, for 4 weeks) were measured in 228 subjects with essential hypertension, and mean responses were compared between methods using the Student paired t test. To assess variation in the agreement between OBP and ABPM responses among subjects, the limits of agreement were calculated as the mean difference between OBP and ABPM responses +/-2 standard deviations. RESULTS: The mean systolic OBP response was 4.8 mm Hg greater than the response measured by ABPM (-14.3 v -9.5 mm Hg, P < .001), and the mean diastolic OBP response was 2.1 mm Hg greater than the response measured by ABPM (-7.5 v -5.5, P < .001). The limits of agreement between the OBP and ABPM responses ranged from -18.7 to +28.2 mm Hg for systolic response and from -12.9 to +17.1 mm Hg for diastolic response. The systolic and diastolic OBP and ABPM responses were in opposite directions in 22.8% and 23.7% of the subjects, respectively. CONCLUSIONS: Compared to ABPM, OBP overestimates the mean systolic and mean diastolic blood pressure responses to hydrochlorothiazide. Variation among subjects in the magnitude and direction of responses renders OBP an unreliable predictor of ABPM responses.


Subject(s)
Antihypertensive Agents/administration & dosage , Hydrochlorothiazide/administration & dosage , Hypertension/diagnosis , Hypertension/drug therapy , Adult , Blood Pressure/drug effects , Blood Pressure Monitoring, Ambulatory , Female , Humans , Male , Middle Aged , Physicians' Offices
6.
Intensive Care Med ; 30(6): 1097-102, 2004 Jun.
Article in English | MEDLINE | ID: mdl-15007546

ABSTRACT

OBJECTIVE: The purpose of this study was to describe the clinical course, complications, and outcome of patients with septic abortion admitted to the intensive care unit (ICU). DESIGN, SETTING, AND PATIENTS: In this retrospective study, the records of 63 patients with septic abortion admitted to the ICU of a university hospital in Argentina between 1985 and 1995 were reviewed. RESULTS: The mean age of the patients was 28.5 years, and 33% had had previous abortions. The mean gestational age was 10.5 weeks. The first ICU day Acute Physiology and Chronic Health Evaluation (APACHE) II mean score was 13.9. Acute renal failure developed in 73% (46 of 63) of the patients, disseminated intravascular coagulation (DIC) in 31% (15 of 49), and septic shock in 32% (20 of 63). Blood cultures were positive in 24% (15 of 62). Twelve patients died (19%). Eight of the deaths occurred during the first 48 h of the ICU admission. Compared with survivors, non-survivors had higher median number of organ failures (1.0 vs 4.0, p<0.0001), mean first ICU day SOFA scores (6.6 vs 10.0, p=0.0059), and mean APACHE II scores (12.7 vs 20.2, p=0.0003), and were more likely to have septic shock (18 vs 92%, p<0.0001), and receive dopamine (37 vs 83%, p=0.0040), mechanical ventilation (8 vs 83%, p<0.0001), and pulmonary artery catheter (8 vs 41%, p=0.0026). CONCLUSIONS: Although it is an avoidable complication, septic abortion requiring admission to the ICU is associated with high morbidity and mortality.


Subject(s)
Abortion, Septic/epidemiology , Abortion, Septic/therapy , Intensive Care Units , APACHE , Abortion, Septic/mortality , Abortion, Septic/physiopathology , Adult , Argentina/epidemiology , Cause of Death , Female , Humans , Intensive Care Units/statistics & numerical data , Pregnancy , Retrospective Studies , Treatment Outcome
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