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Categories: HealthSpine Care

Spinal Tap used to Diagnose, Administer Medicine, and Imaging Assistance

Most of us have heard the term spinal tap, or have seen it on a tv medical drama show. It is known as a lumbar puncture, but what does this procedure involve and how is it utilized? What to know. This procedure is performed in the lower part of the back. It can be used for: A spinal tap is performed by a doctor or nurse trained to do lumbar punctures. A specialized needle is inserted between the vertebrae to collect cerebrospinal fluid. Cerebrospinal fluid is a watery, colorless fluid that cushions the spinal cord and brain, protecting them from injury/damage. Questions may arise as to when an individual would need a spinal tap, how dangerous it is, and what to expect from this procedure?

Spinal Tap Utilization

Spinal taps are often utilized in helping to diagnose infections of the central nervous system. One of the most common infections is meningitis. A sample of cerebrospinal fluid is taken, tested, and if infectious organisms are growing within, these are clue/s for determining and customizing a treatment plan and antibiotic therapy. The procedure also helps with:
  • Identifying central nervous system disorders, like multiple sclerosis, or epilepsy for example.
  • Diagnosing cancers that affect the brain or spinal cord
  • Administration of chemotherapy or anesthesia

Spinal taps are also used with imaging assistance.

For example, a contrast dye can be injected into the cerebrospinal fluid to get an anatomical view of the spinal cord and coverings. They are quite helpful when an individual cannot have an MRI done.

Spinal cord coverings from a cross-section of a nerve

Spinal cord rear view

  1. spinal cord
  2. arachnoid
  3. dorsal rootlets of the
  4. spinal nerve
  5. the spinal nerve of
  6. the posterior surface of the body of the vertebra
  7. conus medullaris
  8. cauda equina
  9. filum terminale
  10. subarachnoid space
A spinal tap is done in a hospital or outpatient facility, depending on the reason for the tap. It is not an emergency procedure. Emergencies bring to mind situations and events that have to be done within seconds/minutes. A lumbar puncture does not entail that type of action.


Listen and follow the provider’s instructions regarding what to eat and drink.
  • An individual could be told to not eat or drink anything for a specific set of hours before.
  • Any prescription/s, over-the-counter meds, and drug allergies need to be disclosed to the medical team that will perform the procedure.
  • Individuals can wear their own clothes but preferably loose-fitting and comfortable should be the objective.
  • Once at the location a hospital gown is given to the patient for the procedure.
  • The day of the appointment, tell the doctor of any unusual symptoms.
  • Have a designated driver for the ride home, as sometimes a patient can feel weak and dizzy after the procedure.

The Procedure

A tap is a simple procedure that usually takes a half-hour or less to complete.
  • The patient sits bent forward or lying down on the side.
  • The knees should be pulled up as far as possible with the chin down into the chest curled into a ball.
  • This arcs the back and spaces out the vertebrae, so there is a wider area for the needle to enter.
  • The skin is cleaned with an antiseptic.
  • A sterile sheet or towel is placed over the patient that has an opening exposing the lower back.
  • Local anesthesia is injected to numb the area.
  • Unless the doctor instructs movement, remaining still is key as the advancement of the needle into the small area is a delicate procedure.
  • There is an initial what feels like a stinging sensation, but the patient does not feel the actual needle as it advances.
  • The needle gets inserted into the spinal space where the cerebrospinal fluid resides.
  • The cerebrospinal fluid pressure is measured.
  • Sometimes an ultrasound or specialized x-ray technique, known as fluoroscopy is used to locate the best place for the needle.
  • This is where the reason for the tap determines what action is taken. Either medicine is administered or a small amount of cerebrospinal fluid is taken.
  • The needle is retracted.
  • A bandage is applied.
  • Spinal tap pain is rare, but sometimes the needle can brush a nerve root when it is inserted. It could feel like an electric shock down the leg.


Once finished, the patient lies on their back for 30 to 60 minutes so the doctor can check for any abnormalities or affects. Being sent home depends on the reason for the tap. If there is unexplained fever, nausea, etc, a patient will not be sent home. If it was an outpatient procedure the patient can leave and resume some simple activities after having a few hours of relaxation. Temporary pain meds are prescribed to address any discomfort. Results could come a day or a week later. They depend on the reason for the spinal tap.

Risks and Complications

It is considered a safe procedure with rare complications. The most common effect is a headache and usually comes on several hours, to a day or two later. These will not lead to any neurologic problems. Water or tea can help prevent and reduce the headache. Over-the-counter pain relievers can help too. However, if the headache continues after two days, call the doctor. A very small possibility of a more severe complication could happen including:
  • Infection
  • Bleeding
  • Numbness
  • Brain herniation or movement of the brain tissue from the added pressure
  • Nerve or spinal cord damage
This is a very safe procedure with the medical team being highly trained and skilled professionals that are careful and gentle.

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Dr. Alex Jimenez’s Blog Post Disclaimer

The scope of our information is limited to chiropractic, musculoskeletal, physical medicines, wellness, and sensitive health issues and/or functional medicine articles, topics, and discussions. We use functional health & wellness protocols to treat and support care for injuries or disorders of the musculoskeletal system. Our posts, topics, subjects, and insights cover clinical matters, issues, and topics that relate and support directly or indirectly our clinical scope of practice.* Our office has made a reasonable attempt to provide supportive citations and has identified the relevant research study or studies supporting our posts. We also make copies of supporting research studies available to the board and or the public upon request. We understand that we cover matters that require an additional explanation as to how it may assist in a particular care plan or treatment protocol; therefore, to further discuss the subject matter above, please feel free to ask Dr. Alex Jimenez or contact us at 915-850-0900. The provider(s) Licensed in Texas& New Mexico*
Dr. Alex Jimenez

Specialties: Stopping the PAIN! We Specialize in Treating Severe Sciatica, Neck-Back Pain, Whiplash, Headaches, Knee Injuries, Sports Injuries, Dizziness, Poor Sleep, Arthritis. We use advanced proven therapies focused on optimal mobility, posture control, health Instruction, functional fitness, and structural conditioning. We use effective "Patient Focused Diet Plans", Specialized Chiropractic Techniques, Mobility-Agility Training, Cross-Fit Protocols, and the Premier "PUSH Functional Fitness System" to treat patients suffering from various injuries and health problems. Ultimately, I am here to serve my patients and community as a Chiropractor passionately restoring functional life and facilitating living through increased mobility.

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