Master Imipenem and Meropenem (Carbapenems) with Picmonic for Nursing RN

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Imipenem and Meropenem (Carbapenems)

Emmy-penny and Mirror-penny
Picmonic
Imipenem and Meropenem (Carbapenems) are broad spectrum beta-lactam antibiotics that cause bacterial death by weakening the cell wall. These antibiotics are indicated to treat mixed infections, including aerobic and anaerobic bacteria. Side effects include gastrointestinal distress such as nausea, vomiting, and diarrhea. The patient may develop suprainfection or seizure activity. Carbapenems are administered only parenterally by IV or IM route. Due to the similarities in structure to penicillin, those with a penicillin allergy are commonly not prescribed carbapenems. Imipenem in specific is always combined with cilastatin to prevent degradation by renal dehydropeptidase I in the renal tubules.
10 KEY FACTS
MECHANISM
Carbapenems
Carpet-penny

Imipenem and meropenem belong to a class of medications known as carbapenems. Carbapenems are similar in structure to the penicillins.

Broad-spectrum Antibiotic
Broad-spectrum of Colors with ABX-guy

Carbapenems are broad spectrum beta-lactam antibiotics that include imipenem, merpenem, ertapenem, and doripem. The structure of these antibiotics make them highly resistant to most beta-lactamases, which are enzymes produced by some bacteria. Unlike other antibiotics, beta-lactam antibiotics targets both aerobic and anaerobic bacteria.

Bactericidal
Bacteria-sliders

Imipenem and meropenem are bactericidal antibiotics. These drugs inhibit cell wall synthesis by binding to specific proteins and weakening the bacterial cell wall. The disruption of the cell wall's integrity causes bacterial lysis and death.

INDICATIONS
Gram Positive and Gram Negative Infections
Graham-cracker Positive-angel and Graham-cracker Negative-devil

Carbapenems are indicated to treat mixed infections by targeting both aerobic and anaerobic microorganisms. The antibiotics are highly active against gram-positive cocci and most gram-negative cocci and bacilli. The drug is resistant to nearly all beta-lactamases and able to penetrate the gram-negative cell envelope. The broad antimicrobial spectrum of carbapenems promotes its utilization for patients undergoing chemotherapy.

SIDE EFFECTS
GI Distress
GI with Flare-gun

Symptoms of gastrointestinal distress are the most common side effects of carbapenem administration. The patient may experience symptoms of nausea, vomiting, or diarrhea. Upset stomach or abdominal pain may also occur in patients prescribed carbapenems.

Suprainfections
Super-bacteria

Carbapenems are indicated for patients who fail to respond to more narrow-spectrum antibiotics. A small percentage of patients taking carbapenems develop suprainfections with bacteria or fungi. Suprainfections are the result of opportunistic pathogens that infect the body during treatment for another primary infection.

Seizures
Caesar

Although rare, seizures are a possible side effect of carbapenems. Imipenem has the greatest risk of inducing seizure activity. If seizures develop, stop drug administration and consult with the physician for an alternative antibiotic.

CONSIDERATIONS
Penicillin Allergy
Pencil-villain and Allergy-alligator

Carbapenems are similar in structure to the penicillins and thus are associated with a risk for allergic cross-hypersensitivity. Because of this, administration of carbapenems is commonly avoided in patients with a reported penicillin allergy.

IV or IM Route
IV In-muscle

Since carbapenems cannot be absorbed from the gastrointestinal tract, the antibiotics are administered either intravenously or intramuscularly. Parenteral administration of carbapenems leads to body fluids and tissues distribution. The medication penetrates the meninges and fosters therapeutic concentrations in the cerebrospinal fluid.

Imipenem Combined with Cilastatin
Emmy-penny Combined with Silly-string

Imipenem is always administered with cilastatin, which is an inhibitor of renal dehydropeptidase I. Without cilastatin, imipenem is susceptible to degradation by renal dehydropeptidase I in the renal tubules.

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