Levitra qt prolongation
pfizer viagra shelf life levitra qt prolongation
Fluconazole, voriconazole, or caspofungin may be suitable alternatives, depending on culture results. Catheter-related infections catheter-related infections generally occur at the exit site or the portion of the catheter that is tunneled in the subcutaneous tissue. Previous infections increase the risk and incidence of catheter-related infections. Pathophysiology. The major pathologic organisms responsible for causing catheter-related infections are s. Aureus and p. Aeruginosa. These organisms also cause the most serious catheterrelated infections. S. Epidermidis is found in less than 20% of catheter-related infections. Other organisms include diphtheroids, anaerobic bacteria, legionella, and fungi. 42 exit-site infections present with purulent drainage at the site. Erythema may or may not be present with an exit-site infection. Tunnel infections are generally extensions of exit-site infections and rarely occur alone. Symptoms of a tunnel infection may include tenderness, edema, and erythema over the tunnel pathway but are often asymptomatic. Ultrasound can be used to detect tunnel infections in asymptomatic patients. Exit-site infections caused by s.