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Given an abstract of a paper, generate a title for this paper such that conveys the key focus of the paper.

Abstract: Some patients converted from ventricular fibrillation to organized rhythms by defibrillation-trained ambulance technicians (EMT-Ds) will refibrillate before hospital arrival. The authors analyzed 271 cases of ventricular fibrillation managed by EMT-Ds working without paramedic back-up. Of 111 patients initially converted to organized rhythms, 19 (17%) refibrillated, 11 (58%) of whom were reconverted to perfusing rhythms, including nine of 11 (82%) who had spontaneous pulses prior to refibrillation. Among patients initially converted to organized rhythms, hospital admission rates were lower for patients who refibrillated than for patients who did not(53% versus 76%, P = NS), although discharge rates were virtually identical (37% and 35%, respectively). Scene-to-hospital transport times were not predictively associated with either the frequency of refibrillation or patient outcome. Defibrillation-trained EMTs can effectively manage refibrillation with additional shocks and are not at a significant disadvantage when paramedic back-up is not available.
Solution: Refibrillation managed by EMT-Ds
Why? The abstract is about refibrillation and it is also mentioned in the abstract that it is managed by EMT-Ds. So it is an apt title.

New input: Abstract: Specific radioimmunoassays for the 7-S domain of type IV collagen and the fragment P1 of laminin were used to quantify these basement membrane proteins in human kidney cortex at different ages and in some patients with diabetes mellitus. The antigens were solubilized by treating the tissue samples with the proteolytic enzymes collagenase, trypsin and pepsin. Total collagen content (as indicated by hydroxyproline concentration) increased with age, and the proportion of the collagen that could be solubilized by any enzyme treatment decreased. The type IV collagen concentration increased significantly with age, whereas the laminin concentration tended to decrease. In the one case of a type I diabetic the amounts of both antigens exceeded those in the age matched controls. In four type II diabetics the results were comparable with those for other aged cases. The distribution of the proteins was studied using the peroxidase-antiperoxidase method. The staining intensity and thickness of both antigens increased with age in the mesangium and Bowmans capsules, the change in type IV collagen staining being more evident. In diabetic patients these changes were more pronounced and other basement membranes appeared thicker in the stainings. These results indicate that basement membrane material accumulates in the kidney cortex during aging and that an alteration takes place in the composition of the basement membranes, the proportion of type IV collagen increasing and that of laminin decreasing.
Solution:
Effect of age and diabetes on type IV collagen and laminin in human kidney cortex.