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

Can I prevent constipation after anesthesia?

If its not a bowel surgery you should not have a problems with constipation. Anesthesia is not causing that problem. But surgery and dehydration could. Especially ileus after bowel READ MORE
If its not a bowel surgery you should not have a problems with constipation. Anesthesia is not causing that problem. But surgery and dehydration could. Especially ileus after bowel procedures. Surgeons usually have a protocols that they follow postop to stimulate the bowel. That includes hydration, early ambulating postop, as well as diet with plenty of fiber and laxatives.

Anesthesia/fetanyl/xylazine

Regular use of potent opioids such as fentanyl usually is associated with decreased peri operative pain threshold. That means that you might require more pain medication to cover READ MORE
Regular use of potent opioids such as fentanyl usually is associated with decreased peri operative pain threshold. That means that you might require more pain medication to cover your postoperative pain. If you want to avoid that I would suggest you regional nerve block as a part of anesthesia management for your hernia repair. And if you consider stop using thats a great opportunity to consult addiction specialist and to have that plan how to make it easy for you to go through your hospital stay with the minimal pain and how to carry on postoperatively.

I have a paralyzed diaphragm .nerve block counter indicated?

I dont believe thats contraindication to nerve block. If its already paralyzed on the same side of the shoulder surgery and you dont have respiratory problems with that. However READ MORE
I dont believe thats contraindication to nerve block. If its already paralyzed on the same side of the shoulder surgery and you dont have respiratory problems with that. However if it is on the other side of the rotator cuff surgery its better to avoid interscalene block since it can cause temporal phrenic nerve block with contralateral diaphragmatic paralysis. In that case you will have bilateral paralysis and might experience respiratory problems. But there are alternatives to interscalene block that would spare phrenic nerve and anesthetise shoulder at the same time. You just need to discuss the issue with your anesthesia provider.

Do you need general anesthesia for a heart stent?

Most of the time its IV sedation. Occasionally monitored anesthesia care. No general anesthesia required for this minimally invasive procedure

Is a colonoscopy with general anesthesia safe?

Colonoscopy is a low stimulation procedure. Usually it's done with IV sedation. On rare occasions, such as pediatric patient or uncooperative, developmentally delayed patient, READ MORE
Colonoscopy is a low stimulation procedure. Usually it's done with IV sedation. On rare occasions, such as pediatric patient or uncooperative, developmentally delayed patient, it could be performed with MAC or general anesthesia. And since it's minor procedure it considered very safe , especially in healthy population, while used as a screening for colon malignancy.

Can anesthesia cause lung damage?

The short answer is no. In general anesthesia is protective in overall. There are many aspects of anesthesia which all work to monitor and preserve all functions including pulmonologic, READ MORE
The short answer is no. In general anesthesia is protective in overall. There are many aspects of anesthesia which all work to monitor and preserve all functions including pulmonologic, responsible for optimal oxygenation of vital organs during the surgery.

Can you use local anesthesia for a colonoscopy?

Theres no need for local anesthetic in colonoscopy since its a low stimulation procedure. Most of the time its done with IV sedation and monitoring

How long is general anesthesia for liver surgery?

It depends on the extent of the surgical procedure. Liver resection again could be somewhere between two to six hours. And that the extent of the anesthesia as well.

Do you use local anesthesia for wrist surgery?

A standard of care would be a regional anesthesia with either general or monitored anesthesia care. Regional could be Supraclavicular, infraclavicular or axillary nerve blocks. READ MORE
A standard of care would be a regional anesthesia with either general or monitored anesthesia care. Regional could be Supraclavicular, infraclavicular or axillary nerve blocks.

Can general anesthesia cause any long-term issues?

Anesthesia is usually tailored and titrated to Patients condition as well as extent of the surgical procedure and is considered safe if delivered in that way.

Can local anesthesia cause nerve damage?

Theoretically it could. When injected in high concentration directly into the nerve. However with the current technology utilizing ultrasound its very unlikely, since you can visualize READ MORE
Theoretically it could. When injected in high concentration directly into the nerve. However with the current technology utilizing ultrasound its very unlikely, since you can visualize an injection location.

What anesthesia do you use for a bronchoscopy?

IV sedation mostly. On rare occasions in non cooperative patients general endotracheal anesthesia.

Will I get general anesthesia for a tonsillectomy?

Definitely general endotracheal anesthesia in order to protect airway intraoperatively.

Can nerve block be used for hand surgery?

Yes. Quite often it used as a sole anesthesia with some IV sedation, or as a supplement to general anesthesia. The goal is to cover distally three nerves: median, radial, and ulnar, READ MORE
Yes. Quite often it used as a sole anesthesia with some IV sedation, or as a supplement to general anesthesia. The goal is to cover distally three nerves: median, radial, and ulnar, which makes the whole hand numb for over 8 hours

Do you get sedation for a bronchoscopy?

Yes. Bronchoscope usually is done with IV sedation.

How long is anesthesia for a colonoscopy?

Colonoscopy is usually a short endoscopic procedure. On average it takes from 15 to 30 minutes. And predominantly is done with IV sedation.

Do you use general anesthesia for a bronchoscopy?

In cooperative patient IV sedation is the choice number one. However a general anesthesia sometimes reserved for pediatric and uncooperative patients.

Is radiofrequency ablation for varicose veins done with anesthesia?

Usually its done under general anesthesia, spinal anesthesia is another option

Is anesthesia risky for tonsils surgery?

Every anesthetic is associated with the certain risk factors. Tonsillectomy is not an exclusion. General risks are allergic reactions, hypoxia with airway obstruction and difficulty READ MORE
Every anesthetic is associated with the certain risk factors. Tonsillectomy is not an exclusion. General risks are allergic reactions, hypoxia with airway obstruction and difficulty with intubation or laryngospasm. Tonsillar bleeding and blood aspiration is a specific risk, as well as airway fire with application of 100% oxygen and Bowie electrocautery. However these risks are extremely low, since there are measures of prevention and Patient population is generally healthy.