Here is my best non-physician explanation, that reconciles the conflicting reports. Hugo Chavez appears to have spinal metastases of the cancer. This is the VERY end stage, like “very”, as in essentially immediate death without mechanical intervention to prolong life.
The base of the brain (top of the spine) is where the respiratory functions are located. With cancer in the spine there is no way to reverse the effect, and rapid tumor growth occurs. Breathing ceases.
Using a mechanical respirator prolongs the physical life, but it is a place from no return. In essence he is dead, but heart function continues with blood flow supported by breathing from mechanical means. So reports of his death are semi-accurate and simultaneously the reports of him being comatose are also accurate. Why prolong his physical death? (see below).
(summary) He is Clinically Dead , and will not be officially announced till after the 10th because in Venezuela’s constitution it requires an election in the event the elected official is not able to be inaugurated in Jan 10th.
Sorry for weak translation but the original article is in Spanish (link)
VENEZULA – Hugo Chavez entered in recent days in an induced coma , with very weak vital signs, maintained through the artificial[..]instance procured the Havana hospital where he was admitted. Sources consulted by ABC said Monday that it had scheduled a next power of artificial support extending the life of the Venezuelan president . That disconnect, with results expected to die, could occur at any time. (more…)