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PubMedDate not supplied

Emphysematous infections of the abdomen and pelvis: a pictorial review.

Emphysematous (gas-forming) infections of the abdomen and pelvis represent potentially life-threatening conditions that require aggressive medical and often surgical management. The initial clinical manifestation of these entities may be insidious, but rapid progression to sepsis will occur in the absence of early therapeutic intervention. Conventional radiography and ultrasonography are often the initial imaging modalities used to evaluate patients with abdominopelvic complaints. However, when a differential diagnosis remains, or if further localization or confirmation of tentative findings is needed, computed tomography (CT) should be considered the imaging modality of choice. CT is both highly sensitive and specific in the detection of abnormal gas and well suited to reliable depiction of the anatomic location and extent of the gas. Of equal importance may be the capability of CT to help reliably identify benign sources of gas, because treatment (if any) varies dramatically depending on the source. Knowledge of the pathophysiologic characteristics, common predisposing conditions, and typical imaging features associated with gas-forming infections of the gallbladder, stomach, pancreas, and genitourinary system will help make early diagnosis and successful treatment possible. In addition, such knowledge will aid in further diagnostic work-up, surveillance of potential complications, and evaluation of therapeutic response.

Aged↗
PubMed1991

Open randomized controlled parallel study of ofloxacin versus trimethoprim-sulfamethoxazole treatment of lower respiratory tract and urinary infections.

A total of 60 patients with lower respiratory tract or urinary tract infections were enrolled in an open, randomized, controlled, parallel study comparing 300 mg ofloxacin (OFX) b.i.d. with trimethoprim + sulfamethoxazole (TMP 800 mg + SMX 160 mg), 1 tablet, b.i.d. The signs and symptoms of low respiratory tract infection were cured in 12 patients (80%) of the OFX group and improved in 2 other patients (13%); at the end of therapy, the 2 germs that persisted were Streptococcus pneumoniae and Branhamella catarrhalis. Clinical cure was achieved in 13 patients (86%) in the TMP-SMX group, while 2 patients were considered as failures (14%); after therapy, the 3 organisms that persisted were 2 S. pneumoniae and 1 Pseudomonas aeruginosa. As far as urinary tract infections are concerned clinical cure and complete eradication of bacteria were achieved in 14 patients in the OFX group (93%); the germ that persisted was Escherichia coli (100,000 CFU), but the patient was asymptomatic. In patients of the TMP-SMX group the urinary infections were cured in 11 subjects (73%); the germs that persisted were 2 E. coli and 1 Proteus mirabilis. Adverse effects were reported for 3 patients (10%) in the OFX group and 4 patients (13%) in the TMP-SMX group. The measurement of serum and intracellular (polymorphonuclear cells and lymphocytes) levels of OFX and TMP-SMX and the assessment of the host's immunocompetence ruled out the possibility of any immunotoxicological side effect.

Acute Disease↗
PubMed1978

Renal infection in the rat after reflux challenge with Pseudomonas aeruginosa.

A rat-pseudomonad reflux model was employed to examine the effect of the size of inoculum on the emergence of renal infection. Widely varying degrees of renal disease observed in challenged animals indicated that a number of variables influenced the outcome of the host-parasite interaction. In this regard, animals in which there was a reduction of the colony counts below a threshold figure rarely gave evidence of renal infection when examined at autopsy on the eighth day following reflux. These results suggest that a threshold level of bacteriuria may also have to be exceeded if renal infection is to become established in patients with vesico-ureteric reflux.

Animals↗