Question

How many days is a gentamicin injection given?

Answer 1

A gentamicin injection is often given for 3 to 5 days, although some people may need the gentamicin given for 7 to 10 days and sometimes as many as 14 days.

The amount of days that the gentamicin injection is given will also depend on the condition and bacteria being treated and your clinical status.

Also because gentamicin can affect kidney, auditory and vestibular function (balance), especially with extended treatments with gentamicin, the doctor might also perform regular blood tests to monitor drug levels and your body's response.

Gentamicin is mostly used for treating of severe infections like, Gram-negative bacteria, including Pseudomonas aeruginosa, and gentamicin is also used for serious infections of the blood (septicemia), lungs (pneumonia), urinary tract (UTIs), abdomen, skin, bones, and joints.

People who should not use gentamicin are people that have a known hypersensitivity or serious toxic reactions like ototoxicity and or nephrotoxicity to gentamicin or any other aminoglycoside antibiotics.

Gentamicin should also be used with extreme caution in cases of any existing renal dysfunction, neuromuscular disorders like myasthenia gravis or if you're pregnant.

The other aminoglycosides that someone might be hypersensitive to or have allergic reactions to include neomycin, amikacin, streptomycin or tobramycin.

The most concerning side effects of gentamicin are neuromuscular blockade, oxtocity which is hearing and balance damage and neoprhotoxicity or kidney damage.

The serious side effects of gentamicin, which are the most concerning side effects can be permanent and are much more likely with prolonged use of gentamicin, high doses of gentamicin, dehydration or any pre-existing conditions.

When on gentamicin, you should seek immediate medical attention if you experience any difficulty breathing, vertigo, dizziness, tinnitus also known as ringing in the ears, hearing loss, swelling and or decreased urination.

Kidney toxicity or nephrotoxicity can manifest as changes in urine frequency or amount, blood in your urine, fatigue or swelling in your feet, ankles or legs.

Gentamicin is a high risk drug and the reason why gentamicin is a high risk drug is because gentamicin has a narrow therapeutic index, which means the difference between an effective dose and a toxic dose of gentamicin is small, which can lead to potential sometimes irreversible side effects.

Gentamicin is also heavily associated with ototoxicity, (balance issues and hearing loss) and nephrotoxicity or kidney damage.

Gentamicin accumulates in your renal cortex potentially causes acute kidney injury, which occurs in a great percentage of users and gentamicin can destroy hair cells in your inner ear and lead to irreversible hearing loss, tinnitus and vertigo.

Dosage of gentamicin must also be monitored carefully, (serum trough/peak levels) to avoid toxicity, especially in people that have pre-existing renal impairment, the elderly and infants.

Concurrent use of gentamicin with other drugs like diuretics like furosemide or other ototoxic and nephrotoxic agents like vancomycin and significantly increase the risk of adverse effects.

Gentamicin is also excreted by your kidneys, so decreased kidney function causes gentamicin to buildup and increases toxicity.

The black box warning for gentamicin is a warning for possible kidney damage, hearing loss and balance issues.

Kidney damage from gentamicin is listed on the black box warning for gentamicin as a result of nephrotoxicity and hearing loss is listed on gentamicin's black box warning as a result of neurotoxicity and ototoxicity.

These toxic effects of gentamicin that can occur are often associated with high doses of gentamicin or prolonged therapy or in people with pre-existing renal impairment.

Nephrotoxicity leads to reversible kidney damage that is evidenced by elevated creatinine/urea, casts, cells or protein in the urine.

Ototoxicity is often reversible auditory hearing loss and vestibular (vertigo/dizziness) damage.

Neuromuscular blockade and a risk of acute muscular paralysis and respiratory failure can also occur with gentamicin.

Renal and 8th cranial nerve function should be closely monitored when using gentamicin.

And when pregnant there's a potential for fetal harm from gentamicin as aminoglycosides can cross the placenta.

Avoid concurrent/sequential use of other nephrotoxic and neurotoxic drugs, like vancomycin and cisplatin.

And maintain levels below 2 mcg/mL

And limit treatment duration to short term use.

Gentamicin is a powerful aminoglycoside antibiotic that is used to treat serious bacterial infections, particularly those caused by gram-negative bacteria, including septicemia, meningitis, and severe urinary tract or respiratory infections.

The antibiotic gentamicin works to get rid of bacteria by killing the bacteria and is typically administered via injection, though topical forms exist for skin infections.

Common side effects of gentamicin include serious kidney damage (nephrotoxicity) and ear toxicity (ototoxicity), such as hearing loss or vertigo.