7 results on '"Nijsten, Maarten W. N."'
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2. Relation of the weather and the lunar cycle with the incidence of trauma in the Groningen region over a 36-year period.
- Author
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Stomp W, Fidler V, ten Duis HJ, and Nijsten MW
- Subjects
- Accidents, Home statistics & numerical data, Accidents, Traffic statistics & numerical data, Adolescent, Adult, Aged, Aged, 80 and over, Athletic Injuries epidemiology, Child, Female, Humans, Humidity, Incidence, Male, Middle Aged, Netherlands, Rain, Temperature, Young Adult, Moon, Weather, Wounds and Injuries epidemiology
- Abstract
Background: The time distribution of injuries is not random. To assess the potential impact of weather and the phase of the moon on accidents, adjustment for known periodic and nonperiodic factors may be important. We compared the incidence of injuries with quantitative and qualitative weather variables as well as the lunar cycle, after correction for calendar and holiday-related factors., Methods: We extracted the daily number of trauma patients treated at the emergency department over 36 years (1970-2005) from the trauma database of our regional hospital. For each patient, age, sex, cause of injury, and severity of injury were recorded. This was combined with daily meteorological data including temperature, precipitation, sunshine, humidity, air pressure, and wind as well as the lunar phase. We also related the rate of change of these parameters with the incidence of injuries. A qualitative weather variable derived from temperature, sunshine duration, and precipitation was defined as bad, normal, or good. Periodicities were adjusted for with Poisson regression spline fitting analysis., Results: Several weather variables were related with the number of injuries. For most of these, better weather conditions were associated with an increase in trauma incidence. Good weather, which was present on 16.5% of the days, resulted in 10.1% (9.3-11.4 95% CI) more traumas compared with normal weather. Full moon was associated with a 2.1% (1.1-3.0 95% CI) lower trauma incidence than new moon., Conclusions: Better weather conditions contribute to an increased incidence of trauma. Full moon is associated with a slightly lower trauma incidence.
- Published
- 2009
- Full Text
- View/download PDF
3. Reticulocyte counts and their relation to hemoglobin levels in trauma patients.
- Author
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Otterman ML, Nijboer JM, van der Horst IC, van Meurs M, ten Duis HJ, and Nijsten MW
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- Female, Follow-Up Studies, Hemorrhage diagnosis, Hemorrhage etiology, Humans, Male, Middle Aged, Prognosis, ROC Curve, Reticulocyte Count, Retrospective Studies, Trauma Severity Indices, Wounds and Injuries complications, Wounds and Injuries diagnosis, Hemoglobins metabolism, Hemorrhage blood, Reticulocytes pathology, Wounds and Injuries blood
- Abstract
Background: Increased production of red blood cells (RBCs) should be reflected by increased reticulocyte counts (RC). With the introduction of modern fully automated measurements of RC, the recovery of hemoglobin (Hb) after blood loss might be assessed earlier. We investigated the temporal relation of Hb and RC in trauma patients., Methods: Over a 10-month period, all patients with trauma admitted to our University Medical Center were analyzed. Both Hb (reference values: males, 14.0-17.1 g/dL; females, 12.1-15.9 g/dL) and RC (8-26 promille) were determined with a Sysmex XE-2100 analyzer. RBC transfusions were administered in otherwise healthy patients below an Hb threshold of 6.9 g/dL. Hb and RC were analyzed for a maximum of 30 days posttrauma and related in multivariate analysis to age, sex, and comorbidity., Results: Two hundred and forty-one patients (age 52 years +/- 21 years) were studied. In 28 patients (12%), one or more RBCs were administered with a mean of 2.2 RBCs (range, 1-4). Hb decreased to 10.9 g/dL +/- 2.1 g/dL on day 3. RC rose from 16 +/- 11 at admission to 38 promille +/- 21 promille on day 13 (p < 0.0001). Nadir Hb values and maximum RC values were inversely related according to univariate analysis (Pearson R = -0.62, p < 0.001). In multivariate analysis, Hb remained the only significant determinant of RC (R = 0.64, p < 0.001)., Conclusions: Hb and RC are clearly related in trauma patients. Measuring RC may be helpful in predicting the rise of Hb after acute blood loss.
- Published
- 2009
- Full Text
- View/download PDF
4. Two cohorts of severely injured trauma patients, nearly two decades apart: unchanged mortality but improved quality of life despite higher age.
- Author
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Nijboer JM, van der Sluis CK, van der Naalt J, Nijsten MW, and Ten Duis HJ
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- Adult, Age Factors, Cohort Studies, Female, Glasgow Coma Scale, Hospital Mortality, Humans, Injury Severity Score, Intubation, Intratracheal, Length of Stay statistics & numerical data, Male, Netherlands epidemiology, Registries, Statistics, Nonparametric, Survival Analysis, Time Factors, Multiple Trauma mortality, Multiple Trauma prevention & control, Quality of Life
- Abstract
Background: The care for trauma patients has undergone major changes during the last decades. Additionally, many injury prevention measures have been established. The objective of these efforts was to reduce the number of traumatic incidents and to reduce mortality and morbidity in injured patients. The aim of our study was to assess how these measures and improved care have altered trauma mechanisms, occurrence of injuries, treatment, and outcome in the trauma population treated at our trauma center., Methods: Two cohorts of trauma patients with an Injury Severity Score >15, treated at the University Medical Center Groningen were compared. The first cohort was treated from 1985 to 1990, the second cohort from September 2002 to January 2005., Results: The annual mean number of severely injured patients increased by 76%. Fourteen percent more patients had sustained an injury at home. The mean age increased from 33 +/- 22 years to 41 +/- 23 years. The presence of severe head and neck injuries in the patients increased from 62% to 73%. Inhospital mortality remained unchanged at 25%. The outcome of survivors improved; 67% of patients made a moderate or good recovery versus 40% almost 20 years ago., Conclusions: Striking are the consequences of the aging of the Dutch population: an almost 10-year increase in mean age and a rise in severe head and neck injuries in the population treated at our trauma center. The unchanged mortality and improved outcome of survivors represented the enhanced trauma care.
- Published
- 2007
- Full Text
- View/download PDF
5. Myth or reality: hematocrit and hemoglobin differ in trauma.
- Author
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Nijboer JM, van der Horst IC, Hendriks HG, ten Duis HJ, and Nijsten MW
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- Adolescent, Adult, Blood Transfusion, Child, Female, Humans, Injury Severity Score, Male, Middle Aged, Needs Assessment, Retrospective Studies, Hematocrit, Hemoglobins metabolism, Wounds and Injuries blood
- Abstract
Background: Estimating blood loss in trauma patients usually involves the determination of hematocrit (Ht) or hemoglobin (Hb). However, in trauma patients, a poorly substantiated habit exists to determine both Ht and Hb in assessing acute blood loss. This suggests that Ht and Hb provide different information. Moreover, a survey of the literature showed a significant association of the subject trauma with the use of Ht. We investigated whether Ht and Hb differ in trauma patients., Methods: Trauma patients with an Injury Severity Score>15 admitted from 1996 to 2004 to the University Medical Center Groningen were analyzed. All blood samples obtained during the first 7 days postinjury in which both Ht and Hb were determined were studied. Ht and Hb were measured with a Coulter Counter. The relation between Ht and Hb was analyzed with linear regression. The potential effect of hemolysis was studied by analyzing lactate dehydrogenase levels., Results: In 671 patients 2,461 paired Ht levels and Hb levels were obtained. The mean Ht was 30.9%+/-6.9% (interquartile range 25.8%-35.8%). The mean concentration of Hb was 10.4+/-2.3 g/dL (interquartile range 8.7-12.1 g/dL). Ht and Hb had a Pearson's R of 0.99 and the following relations applied: Ht (%)=2.953xHb (g/dL) or Hb (g/dL)=0.334xHt (%). Lactate dehydrogenase was not related with Ht and Hb, indicating hemolysis was not relevant., Conclusions: In a large series of trauma patients, Ht and Hb behaved as identical parameters. The idea that Ht is different from or even superior to Hb is a misconception. There is no reason for determining both Ht and Hb in trauma patients.
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- 2007
- Full Text
- View/download PDF
6. Letters to the editor.
- Author
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Vogelzang M, Nijboer JM, van der Horst IC, Zijlstra F, Ten Duis HJ, and Nijsten MW
- Published
- 2006
- Full Text
- View/download PDF
7. Hyperglycemia has a stronger relation with outcome in trauma patients than in other critically ill patients.
- Author
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Vogelzang M, Nijboer JM, van der Horst IC, Zijlstra F, ten Duis HJ, and Nijsten MW
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- Adult, Aged, Area Under Curve, Critical Care, Female, Humans, Hyperglycemia drug therapy, Hypoglycemic Agents therapeutic use, Injury Severity Score, Insulin therapeutic use, Intensive Care Units, Length of Stay, Male, Middle Aged, ROC Curve, Retrospective Studies, Wounds and Injuries classification, Wounds and Injuries mortality, Hyperglycemia complications, Wounds and Injuries complications
- Abstract
Background: Acute hyperglycemia is associated with adverse outcome in critically ill patients. Glucose control with insulin improves outcome in surgical intensive care unit (SICU) patients, but the effect in trauma patients is unknown. We investigated hyperglycemia and outcome in SICU patients with and without trauma., Methods: A 12-year retrospective study was performed at a 12-bed SICU. We collected the reason for admission, Injury Severity Scores (ISS), and 30-day mortality rates. Glucose measurements were used to calculate the hyperglycemic index (HGI), a measure indicative of overall hyperglycemia during the entire SICU stay., Results: In all, 5234 nontrauma and 865 trauma patients were studied. Trauma patients were younger, more frequently male, and had both lower median admission glucose (123 versus 133 mg/dL) and HGI levels (8.9 vs. 18.4 mg/dL) than nontrauma patients (p < 0.001). Mortality was 12% in both groups. Area under the receiver-operator characteristic for HGI and mortality was 0.76 for trauma patients and 0.58 for nontrauma patients (p < 0.001). In multivariate analysis, HGI correlated better with mortality in trauma patients than in nontrauma patients (p < 0.001). Head-injury and nonhead-injury trauma patients showed similar glucose levels and relation between glucose and mortality., Conclusions: The relation of hyperglycemia and mortality is more pronounced in trauma patients than in SICU patients admitted for other reasons. The different behavior of hyperglycemia in these patients underscores the need for evaluation of intensive insulin therapy in these patients.
- Published
- 2006
- Full Text
- View/download PDF
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