Doctor insights on:
Gentamicin Peak And Trough
To know correct dose: The levels of vancomycin in the blood are not accurately predictable based only on the dose given. The peak level is to make sure the dose isn't too high and the trough to make sure it isn't too low. These tests are especially important if there are kidney problems. I'm sure your doctor knows what she is doing, but if in doubt, ask for consultation with an infectious diseases specialist. ...Read more
Is gentamicin safe for a 2 year old outpatient (no peek and trough levels)? Are there safer alternatives? I fear ototixicity and nephrotoxicity.
Yes and no: If your child is taking eye drops with gent or using it in his/her ears there is little worry. However, if it is being used by injection, and will be for a long period of time, trough levels should be used. Ototoxicity and neprortoxicity usually follow long periods of high doses or if patient's kidneys are not functioning properly. ...Read more
Will the use of Maxitrol (dexamethasone neomycin and polymyxin) eye drops, for 2 days (one drop four times daily) definitely cause dendrites in non-stromal-keratitis ocular HSV?
No: Not likely but definitely wise to use prophylactic anti-viral just in case. ...Read more
I would like help to calculate peak blood flow rate in aorta when given radius and peak blood velocity?
Bernoulli Equation: For peak pressure, you only need peak velocity. Peak pressure is 4 x the square of the peak velocity. If the peak velocity is 4 m/s, the peak pressure is 64 mmHg. The peak velocity IS the peak flow rate. For example, if peak velocity is 5 l/min, then the peak flow rate is 5 l/min. Is that what you meant? ...Read more
Post lasik on tobradex (tobramycin and dexamethasone) 3 weeks , frm 4 days sensation of pressure increases in one eye and blurring as well with headache behind one eye with reddish?
Can one build up a tolerance to either Alrex (loteprednol) and Pred Forte eye drops over time, decreasing their effectiveness?
Probably not: Alrex (loteprednol) is extremely weak and you would not be likely to notice the difference. Pred Forte has a good deal of anti-inflammatory strength but is a cognate of a natural hormone so you would not lose response. The condition you are treating might get more severe however which you would interpret as the drop losing effectiveness. ...Read more
On inhaled steroid and pred taper and neb. Peak flow improving 70% but wlking taking all trigger wheeze. 3weeks how get better? 10/1 could ride bike.
In daily adrenal insufficiency supplementation, which is worse: one peak of cortisol in the upper 30s or low 40s, or three peaks between 16 and 22?
Not studied: Hi. I hope very much you were correctly diagnosed. Assuming so, I do not know why your doc is even checking peak cortisol levels...well known and shown to not be valuable or predictive of problems. Use the lowest hydrocortisone (= cortisol) or prednisone dose needed to prevent hypo adrenal symptoms. Blood cortisol levels are not helpful. Good luck! ...Read more
No: The suspension peaks in about 90 minutes while tablets peak in a range of 3-5 hrs. In other words, suspension gets into the circulation faster. ...Read more
Can you apply renova (tretinoin) in the day as long as you plan on staying inside out of sun ? Thus does artificial light effect renova (tretinoin) ?
Avoid ambient light: The difficulty with daytime plans of staying inside out of sun is that there is more ambient light than one intends, e.g. Through windows, etc. Plans change, and driving in the car will lead to exposure to sun. Artificial lights vary in wavelength, but usually are not the major concern. Check the particular types of light used, but most people avoid problems by using Renova (tretinoin) at night. ...Read moreSee 1 more doctor answer
How much do testosterone levels vary in young men throughout the day. Should the levels always stay in the "normal" range. Free testosterone blood test was low but at 3:30pm , had two tests both low.
Started zyflo (zileuton) cr, nebuluzer pulmacort and albuterol 4 days ago. Peak flow still 60% of expected. How long should it take to improve?
See below: Your peak flow may not improve a whole lot. If you were having an exacerbation at the time you first did the peak flow and it was 60%, then it may improve. But if not, your looking to control symptoms, not necessarily get a good number on your peak flow. ...Read moreSee 1 more doctor answer
If the doctor order a Testosterone blood test After injection of 100mg of testosterone propionate will the plasma testosterone be higher than before ?
I blew uptoo 560 on a small standard range adult peak flow meter iam a 46yr female 5ft4 and 13 stone is this a good effort and reading ?
Lung volumes: 500cc should be an adequate exhalation for someone your size. See your doctor for official explanation of your tests. ...Read more
Are sulfacetamaide 10% eye drops and neomycin and polymyxin and dexamethasone eye drops for the same problems?
Generally: These are inexpensive eye preparations for treating infections when the organism is unknown at the time of patient examination. They are effective although they have some degreee of allergic response. Many eye infections are viral in origin so these will not improve that situation. ...Read more
Approx 1 hour after putting in eye drops I briefly shed a tear would this dilute and affect the glaucoma eye drops?
No : The eye drop takes about 5-10 min to be absorbed into the eye. One hour later tears will not dilute it. ...Read more
How long will my mixed genotropin (human growth hormone) 36iu pen survive at 16 degrees celsius, if avoiding direct light?
Up to 1 month: Check out http://www.News-medical.Net/drugs/genotropin.Aspx (for australia) but same drug. Store your Genotropin (human growth hormone) (mixed or unmixed) in the refrigerator at 2-8°c. It is also possible to store your unmixed Genotropin (human growth hormone) outside the refrigerator, but under 25°c, for one month as long as the expiry date has not passed. It must not be frozen or heated above 25°c. ...Read moreSee 1 more doctor answer