Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).
Example: 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. 
 Which is the apt title for the abstract? option1: Refibrillation managed by EMT-Ds option2: Maintenance of compliance in a small diameter arterial prosthesis.
Example solution: Refibrillation managed by EMT-Ds
Example explanation: 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.

Problem: Abstract: Gintzler found an abrupt increase in pain thresholds in rats during the last days of gestation. While some data suggest a similar increase in pain thresholds for pregnant women, Goolkasian and Rimer have found, using signal detection procedures, that women are increasingly likely to report stimuli as painful during the last 2 weeks of pregnancy. The present studies were carried out to assess pain and discomfort thresholds in the last weeks of women's pregnancies. In the first study, daily measures of the pressure-induced pain thresholds of 6 women who had spontaneous, vaginal births increased during the last 16 days of pregnancy and exceeded the 300 mm Hg maximum stimulus pressure for the last 9 days of pregnancy. In the second study, the discomfort thresholds of 6 women were measured each day during the last 11 days of pregnancy before spontaneous vaginal births. The discomfort thresholds of the pregnant women were higher than those of 6 non-pregnant women whose discomfort thresholds were also measured each day. Pregnant women's thresholds increased before the onset of labor, while the discomfort thresholds of the non-pregnant women were unchanged during the course of the study. These results extend Gintzler's findings of reduced sensitivity to pain shortly before parturition. 
 Which is the apt title for the abstract? option1: Pain and discomfort thresholds in late pregnancy. option2: Discitis following chemonucleolysis. An experimental study.

Solution: Pain and discomfort thresholds in late pregnancy.