Medical complexity status classification and protocol

Medical complexity status classification and protocol.

Major categories

MCS 0 - Patients with no medical problems

MCS 1 - Patients with controlled or stable medical conditions

MCS 2 - Patients with uncontrolled or unstable medical conditions

MCS 3 - Patients with medical conditions associated with acute exacerbation, resulting in high risk of mortality

Subcategories

A - No anticipated complications

B - Minor complications are anticipated. “Minor complications” are defined as complications that can be successfully addressed in the dental chair

C - Major complications are anticipated. “Major complications” are defined as complications that should be addressed by a medical provider and may sometimes require a hospital setting

According to ASA a patient with an incapacitating systemic disease that is constant threat to life falls under:

# According to ASA a patient with an incapacitating systemic disease that is constant threat to life falls under: 

A. ASA I 

B. ASA II

C. ASA III

D. ASA IV

The correct answer is D. ASA IV

American Society of Anesthesiologists (ASA) physical status classification system.

ASA I : A normal healthy person

ASA II : A patient with a mild disease

ASA III : A patient with a severe systemic disease

ASA IV : A patient with a severe systemic disease that is a constant threat to life

ASA VI : A declared brain‐dead patient whose organs are being removed for donor purposes

Restricting size of beam is done by:

 # Restricting size of beam is done by:

A. Collimator

B. Transformer

C. Tube head seal

D. Beam indicating device

The correct answer is A. Collimator.

A collimator is a metallic barrier with an aperture in the middle used to restrict the size of the x-ray beam and the volume of tissue irradiated. Round and rectangular collimators are most frequently used in dentistry. Dental x-ray beams are usually collimated to a circle 4 inches (7 cm) in diameter at the patient’s face. A round collimator is a thick plate of radiopaque material (usually lead) with a circular opening centered over the port in the x-ray head through which the x-ray beam emerges. Typically, round collimators are built into open-ended aiming cylinders. Rectangular collimators further limit the size of the beam to just larger than the x-ray film, further reducing patient exposure. Some types of film-holding instruments also provide rectangular collimation of the x-ray beam. 

Reference: White and Pharoah's Oral Radiology, 7th Edition

In CBCT technology, the speed with which individual images are acquired is called:

 # In CBCT technology, the speed with which individual images are acquired is called:

A. Running rate

B. Frame rate

C. Projection rate

D. Image rate

The correct answer is B. Frame rate.

The number of images constituting the projection data throughout the scan is determined by the detector frame rate (number of images acquired per second), the completeness of the trajectory arc (180 to 360 degrees), and the rotation speed of the source and detector. The number of basis images making up a single scan set may be fixed or variable. Higher frame rates have both desirable and undesirable effects. Higher frame rates increase the signal-to-noise ratio, producing images with less noise and reducing metallic artifacts. However, a higher frame rate is associated with a longer scan time and higher patient dose. In addition, more data are obtained, and primary reconstruction time is increased.

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