Editing Cardiopulmonary bypass (section)

===Cannulae===
Multiple [[cannula]]e are sewn into the patient's body in a variety of locations, depending on the type of surgery. A venous cannula removes oxygen depleted venous blood from a patient's body, and an arterial cannula infuses oxygen-rich blood into the arterial system. The main determinants of cannula size selection is determined by the patient's ''size'' and ''weight'', ''anticipated flow rate'', and the ''size of the vessel'' being cannulated.<ref name=":33"/> A [[Cardioplegia]] cannula delivers a Cardioplegia solution to cause the heart to stop beating.

Some commonly used cannulation sites:
{| class="wikitable"
|-
! Venous
! Arterial
! Cardioplegia
|-
|[[Right atrium]]
| Proximal [[aorta]], distal to the [[aortic cross-clamp|cross-clamp]]
| Proximal [[aorta]], proximal to the [[aortic cross-clamp|cross-clamp]]
|-
|[[Vena cavae]]
|[[Femoral artery]]
|[[Coronary sinus]] (retrograde delivery)
|-
|[[Femoral vein]]
|[[Axillary artery]]
| Coronary ostia
|-
|
| Distal [[aorta]]
| Bypass grafts (during [[CABG]])
|-
|
| Apex of the [[heart]]
|
|-
|}