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

Example Input: Abstract: A method is described for obtaining nondistorted, reproducible phosphoglucomutase-1 subtyping patterns from semen stains and bloodstains. Isoelectric focusing of phosphoglucomutase-1 was accomplished in 80 min in a 0.2-mm-thick polyacrylamide gel with an interelectrode wick distance of 8.0 cm. The gel contained 1.2% (w/v) N-(2-hydroxyethyl) piperazine-N-3-propanesulfonic acid (EPPS) and pH 5 to 7 ampholytes (4% w/v). When maintained at room temperature, laboratory-prepared bloodstains and semen stains could be typed for phosphoglucomutase-1 up to four months and three weeks, respectively. An evaluation of phosphoglucomutase-1 typing by isoelectric focusing and the Group I system was performed on casework samples submitted to the FBI Laboratory. In addition to the increased discriminating probability of phosphoglucomutase-1 when subtyped, isoelectric focusing yielded an increase in positive calls on questioned bloodstains (65.6 versus 36.2%) and dried seminal stains (16.4 versus 13.1%) compared with the Group I system.
Example Output: Subtyping phosphoglucomutase-1 in semen stains and bloodstains: a report on the method.

Example Input: Abstract: A considerable amount of literature has been devoted to compromise of the right ventricle in spontaneous myocardial infarction. Little information is available regarding disproportionate dysfunction of the right ventricle associated with cardiac operation and the recovery period therefrom. Recognition of the problem is of paramount importance, if support measures are to be implemented. A great deal has yet to be learned regarding the appropriate support for the acutely failing right ventricle. Much remains to be accomplished regarding the assessment of right ventricle reserve, defining the role of risk factors, and quantitating the value of measures to optimally protect the right ventricle from injury during the perioperative period. Recognizing that the integrity of the right ventricle can be altered by numerous preoperative, perioperative and postoperative factors will provide an enlightened disposition on the part of the surgical team. Awareness of these considerations in the planning and conduct of surgical procedures should reduce morbidity and mortality from perioperative right ventricular failure. The imposition of new or unexpected morbidity during operation on a relatively unrelated problem represents surgical imperfection. Appropriate effort toward minimizing insult of the right ventricle could result in significantly decreasing the incidence and severity of perioperative right ventricular failure before the impetus of the continuing clinical problem dictates improvement in techniques to more appropriately treat this frequently preventable problem.
Example Output: Perioperative right heart failure: etiology and pathophysiology.

Example Input: Abstract: Patients with essential hypernatremia maintain urinary concentrating ability despite plasma hyperosmolality and low plasma vasopressin concentrations. We investigated renal sensitivity to ultralow dose vasopressin infusions in two patients with a syndrome of hypodipsia, hypernatremia with selective osmoreceptor dysfunction, early puberty, and aggressive behavior. The patients were water loaded until a hypotonic diuresis was established. Vasopressin was infused in stepwise increments from 0.4-12 fmol/kg X min. Both patients had increased renal sensitivity to vasopressin, achieving negative free water clearance at infusion rates of 0.4 and 4 fmol/kg X min (normal greater than or equal to 6). Treatment for 3 months with 1-desamino-8-D-arginine vasopressin (DDAVP) led to an improvement in behavior and the reporting, for the first time, of a sensation of thirst. After DDAVP therapy both patients had a reduction of their renal sensitivity to infused vasopressin. We conclude that untreated patients with essential hypernatremia have increased renal sensitivity to vasopressin which is reduced by DDAVP administration.
Example Output:
Increased renal sensitivity to vasopressin in two patients with essential hypernatremia.