1. Developments in cardioprotection: “polarized” arrest as an alternative to “depolarized” arrest 
David J Chambers, PhD, David J Hearse, DSc 
The Annals of Thoracic Surgery 
Volume 68, Issue 5, Pages (November 1999)
DOI: /S (99)

2. Fig 1
Postischemic recovery of developed pressure (expressed as a percent of preischemic control function) in hearts subjected to 15 minute unprotected normothermic (37°C) global ischemia, a 50 ml infusion (at 4°C) of either Krebs Henseleit buffer (KH) alone (control), St. Thomas’ Hospital (STH2) cardioplegic solution, or KH plus 50 μM pinacidil followed by 50 minutes hypothermic (15°C) global ischemia before being reperfused for 30 minutes. Values are shown as mean ± standard error of the mean; ∗p < 0.05 compared to the KH group. Redrawn from Lawton and associates [39].
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

3. Fig 2
Postischemic recovery of aortic flow (expressed as a percent of preischemic control function) in hearts arrested and stored for 5 hours with Krebs Henseleit buffer (KH) alone, KH containing 16 mM K+, or KH containing 22 μM tetrodotoxin (TTX). Values are shown as mean ± standard error of the mean; ∗p < 0.05 compared to the KH group, ∗∗p < 0.05 compared to the KH + 16 mM K+ group. Redrawn from Snabaitis and associates [46].
The Annals of Thoracic Surgery  , DOI: ( /S (99) )

4. Fig 3
Cardiac resting membrane potential (Em) recorded every 15 minutes throughout 5 hours of hypothermic (7.5°C) ischemic arrest. Solid triangles represent ischemic arrest, solid circles represent depolarized arrest, and solid squares represent polarized arrest. Values are shown as mean ± standard error of the mean. Redrawn from Snabaitis and associates [46].
The Annals of Thoracic Surgery  , DOI: ( /S (99) )