TABLE 12-5 Four Surgical Procedures Currently Are Used to Install Pacemakers. If

question 93

Short Answer

TABLE 12-5
Four surgical procedures currently are used to install pacemakers. If the patient does not need to return for follow-up surgery, the operation is called a "clear" operation. A heart center wants to compare the proportion of clear operations for the 4 procedures and collects the following numbers of patients from their own records:

They will use this information to test for a difference among the proportion of clear operations using a chi-square test with a level of significance of 0.05.
-Referring to Table 12-5, the critical value of the test is ________.

---

Definitions:

Distended Neck Veins

Swollen or enlarged veins in the neck, often a sign of cardiovascular disease or conditions affecting blood flow.

Crackles

Abnormal lung sounds heard with a stethoscope, indicating fluid in the airways.

Tourniquet

A device used to apply pressure to a limb or extremity to limit, but not stop, the flow of blood, often used during surgery or in emergency situations.

Central Venous Access Devices (CVADs)

Medical devices inserted into large veins in the body used for administering medications, fluids, or for drawing blood.