title: The risk of midline catheterization in hospitalized patients. A prospective study.
abstract: OBJECTIVE
  To assess the risk associated with midline catheter use in hospitalized patients.
  
  
  METHODS
  Prospective, consecutive enrollment.
  
  
  METHODS
  A 719-bed university-affiliated hospital.
  
  
  METHODS
  Patients were enrolled if they were likely to require at least 7 days of intravascular catheterization while hospitalized.
  
  
  METHODS
  Patients were monitored for adverse reactions. Catheter segment, insertion site, hub, infusate, and blood cultures were assessed.
  
  
  RESULTS
  From February 1993 through June 1994, 251 Landmark midline catheters were inserted in 238 patients. One hundred forty catheter cultures were obtained from 130 patients who remained hospitalized for the duration of catheterization. For these 130 patients, the mean duration of catheterization was 9 days, the incidence of catheter colonization was 5.0 per 1000 catheter days, and the incidence of catheter-related bloodstream infection was 0.8 per 1000 catheter days. During the study period, two severe, unexpected adverse reactions occurred that may have been associated with the use of Landmark midline catheters; no such reactions were associated with the insertion of 58,580 Teflon peripheral catheters (P < 0.00001; exact 95% lower bound of the odds ratio, 68.9). Fifty-three similar reactions associated with Landmark midline catheters, including two deaths, have been reported to the Food and Drug Administration through June 1994.
  
  
  CONCLUSIONS
  The risk for midline catheter-related infection is low. However, Landmark midline catheters are associated with life-threatening adverse reactions that are probably attributable to the catheter material itself.
mesh_terms: D002404:Catheterization / Q000009:adverse effects*; D004417:Dyspnea / Q000209:etiology; D004866:Equipment Contamination; D004867:Equipment Design; D004869:Equipment Safety; D006760:Hospitalization; D006801:Humans; D007231:Infant, Newborn; D016017:Odds Ratio; D011446:Prospective Studies; D012307:Risk Factors