expert type icon EXPERT

Mr. Alex Preston, MD

Anesthesiologist

Dr. Alex Preston is an anesthesiologist practicing in Porterville, CA. Dr. Preston ensures the safety of patients who are about to undergo surgery. Anestesiologists specialize in general anesthesia, which will (put the patient to sleep), sedation, which will calm the patient or make him or her unaware of the situation, and regional anesthesia, which just numbs a specific part of the body. As an anesthesiologist, Dr. Preston also might help manage pain after an operation.
Mr. Alex Preston, MD
  • Porterville, CA
  • Celjabinsk Medical Institute
  • Accepting new patients

Is it safe to go under anesthesia with COPD?

Yes, it is, if it well controlled and optimized.

Can general anesthesia cause lung problems?

General anesthesia per se could not affect healthy lungs. However inhalational anesthetic is usually avoided in Patients with pneumonia or severe COPD because it potentially can READ MORE
General anesthesia per se could not affect healthy lungs. However inhalational anesthetic is usually avoided in Patients with pneumonia or severe COPD because it potentially can exasperate hypoxia, which is a low oxygen concentration in blood. In that case, it’s preferably to use total
intravenous general anesthesia instead of inhalational. Also in emergent surgeries, there’s a risk of pulmonary aspiration in Patients with full stomachs during induction of anesthesia. That could cause chemical pneumonitis and subsequent pneumonia and ARDS aspiration respiratory
distress syndrome. It’s avoidable with rapid sequence induction and patient positioning. In general, it’s very uncommon to have lung problems from anesthesia.

local anesthesia

You are totally right. It’s extremely rare to get urinary retention from infiltration with a local anesthetic. It’s more common with Epidural or Spinal Anesthesia when local anesthetic READ MORE
You are totally right. It’s extremely rare to get urinary retention from infiltration with a local anesthetic. It’s more common with Epidural or Spinal Anesthesia when local anesthetic blocks the nerves which send signals to the bladder. In my opinion, you experienced the reaction to
methylparaben. It’s a preservative in dental Xylocaine. That means that you can safely receive this local anesthetic without that preservative if you will have another surgical procedure. Just mention to the Surgeon that you had the complication from methylparaben in the Xylocaine vial.

Can you get local anesthesia for chronic knee pain?

If you will have a procedure on your knee, for example, diagnostic knee aspiration, or knee arthroscopy with an intraarticular joint injection of local anesthetic. For chronic READ MORE
If you will have a procedure on your knee, for example, diagnostic knee aspiration, or knee arthroscopy with an intraarticular joint injection of local anesthetic. For chronic arthritis, however, it’s not effective. Depending on the degree of arthritis, it’s either anti-inflammatory
medications, or total knee replacement for severe arthritis.

What kind of sedation is done for liver biopsy?

Usually a mild sedative such as Midazolam in combination with pain
medication, short acting opioid Fentanyl if there is no contraindications.

Are you sedated for a bone marrow biopsy?

It could be done either with local anesthesia or local + IV sedation

Can anesthesia cause liver damage?

The short answer is no. Hepatitis could be caused by viruses or toxins. Balanced general anesthesia is not toxic to the liver. On the contrary, by supporting optimal blood supply READ MORE
The short answer is no. Hepatitis could be caused by viruses or toxins. Balanced general anesthesia is not toxic to the liver. On the contrary, by supporting optimal blood supply to the liver and other vital organs it protects them. Historically there were inhalational anesthetics that were hepatotoxic after prolonged exposures during long surgical procedures, such as Halothane, but it’s off the market. Theoretically, another inhalational anesthetic Sevoflurane, which is currently used, has a metabolite called compound A, which could be hepatotoxic, but its metabolism is insignificant even after prolonged exposure and no cases of liver damage have been reported.

Can thyroid surgery be done with local anesthesia?

The standard of care for thyroidectomy is a GETA, general endotracheal anesthesia.

Can you deliver a baby with an epidural?

Absolutely. That’s the purpose of the labor epidural. To deliver the baby with minimal pain.