Piperacillin and Tazobactam

PIPERACILLIN AND TAZOBACTAM- piperacillin sodium and tazobactam sodium injection, powder, lyophilized, for solution
Mitim S.r.l.

To reduce the development of drug-resistant bacteria and maintain the effectiveness of piperacillin and tazobactam for injection and other antibacterial drugs, piperacillin and tazobactam for injection should be used only to treat or prevent infections that are proven or strongly suspected to be caused by bacteria.

1 INDICATIONS AND USAGE

Piperacillin and tazobactam for injection, USP is a combination product consisting of a penicillin-class antibacterial, piperacillin, and a β-lactamase inhibitor, tazobactam, indicated for the treatment of patients with moderate to severe infections caused by susceptible isolates of the designated bacteria in the conditions listed below.

1.1 Intra-abdominal Infections

Appendicitis (complicated by rupture or abscess) and peritonitis caused by β-lactamase producing isolates of Escherichia coli or the following members of the Bacteroides fragilis group: B. fragilis , B. ovatus , B. thetaiotaomicron , or B. vulgatus. The individual members of this group were studied in fewer than 10 cases.

1.2 Skin and Skin Structure Infections

Uncomplicated and complicated skin and skin structure infections, including cellulitis, cutaneous abscesses and ischemic/diabetic foot infections caused by β-lactamase producing isolates of Staphylococcus aureus.

1.3 Female Pelvic Infections

Postpartum endometritis or pelvic inflammatory disease caused by β-lactamase producing isolates of Escherichia coli.

1.4 Community-acquired Pneumonia

Community-acquired pneumonia (moderate severity only) caused by β-lactamase producing isolates of Haemophilus influenzae.

1.5 Nosocomial Pneumonia

Nosocomial pneumonia (moderate to severe) caused by β-lactamase producing isolates of Staphylococcus aureus and by piperacillin/tazobactam-susceptible Acinetobacter baumannii , Haemophilus influenzae , Klebsiella pneumoniae , and Pseudomonas aeruginosa (Nosocomial pneumonia caused by P. aeruginosa should be treated in combination with an aminoglycoside) [see Dosage and Administration (2) ].

1.6 Usage

To reduce the development of drug-resistant bacteria and maintain the effectiveness of Piperacillin and tazobactam for injection, USP and other antibacterial drugs, Piperacillin and tazobactam for injection, USP should be used only to treat or prevent infections that are proven or strongly suspected to be caused by bacteria. When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.

2 DOSAGE AND ADMINISTRATION

Piperacillin and tazobactam for injection should be administered by intravenous infusion over 30 minutes.

2.1 Adult Patients

The usual total daily dose of piperacillin and tazobactam for injection for adults is 3.375 g every six hours totaling 13.5 g (12 g piperacillin/1.5 g tazobactam). The usual duration of piperacillin and tazobactam for injection treatment is from 7 to 10 days.

Piperacillin and tazobactam for injection should be administered by intravenous infusion over 30 minutes.

2.2 Nosocomial Pneumonia

Initial presumptive treatment of patients with nosocomial pneumonia should start with piperacillin and tazobactam for injection at a dosage of 4.5 g every six hours plus an aminoglycoside, totaling 18 g (16 g piperacillin/2 g tazobactam). The recommended duration of piperacillin and tazobactam for injection treatment for nosocomial pneumonia is 7 to 14 days. Treatment with the aminoglycoside should be continued in patients from whom P. aeruginosa is isolated.

2.3 Renal Impairment

In patients with renal impairment (creatinine clearance ≤ 40 mL/min) and dialysis patients (hemodialysis and CAPD), the intravenous dose of piperacillin and tazobactam for injection should be reduced to the degree of actual renal function impairment. The recommended daily doses of piperacillin and tazobactam for injection for patients with renal impairment are as follows:

Table 1: Recommended Dosing of Piperacillin and Tazobactam for Injection in Patients with Normal Renal Function and Renal — Impairment (As total grams piperacillin/tazobactam)

* Creatinine clearance for patients not receiving hemodialysis

** 0.75 g (0.67 g piperacillin/0.08 g tazobactam) should be administered following each hemodialysis session on hemodialysis days

Renal Function
( creatinine clearance , All Indications ( except Nosocomial
mL / min ) nosocomial pneumonia ) Pneumonia
>40 mL/min 3.375 q 6 h 4.5 q 6 h
20 to 40 mL/min* 2.25 q 6 h 3.375 q 6 h
<20 mL/min* 2.25 q 8 h 2.25 q 6 h
Hemodialysis** 2.25 q 12 h 2.25 q 8 h
CAPD 2.25 q 12 h 2.25 q 8 h

For patients on hemodialysis, the maximum dose is 2.25 g every twelve hours for all indications other than nosocomial pneumonia and 2.25 g every eight hours for nosocomial pneumonia. Since hemodialysis removes 30% to 40% of the administered dose, an additional dose of 0.75 g piperacillin and tazobactam for injection (0.67 g piperacillin/0.08 g tazobactam) should be administered following each dialysis period on hemodialysis days. No additional dosage of piperacillin and tazobactam for injection is necessary for CAPD patients.

2.4 Pediatric Patients

For children with appendicitis and/or peritonitis 9 months of age or older, weighing up to 40 kg, and with normal renal function, the recommended piperacillin and tazobactam for injection dosage is 100 mg piperacillin/12.5 mg tazobactam per kilogram of body weight, every 8 hours. For pediatric patients between 2 months and 9 months of age, the recommended piperacillin and tazobactam for injection dosage based on pharmacokinetic modeling, is 80 mg piperacillin/10 mg tazobactam per kilogram of body weight, every 8 hours [see Use in Specific Populations (8.4) and Clinical Pharmacology (12.3)]. Pediatric patients weighing over 40 kg and with normal renal function should receive the adult dose. It has not been determined how to adjust piperacillin and tazobactam for injection dosage in pediatric patients with renal impairment.

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