You will be shown the abstract of a medical clinical trial report. Your task is to extract all the findings from this report into a JSON array. Each finding should contain the following five elements:

- Intervention: The medical intervention being tested. This should be a text span copied from the input passage.
- Comparator: The baseline against which the intervention is being evaluated. This should be a text span copied from the input passage. If no comparator is reported, set to `null`.
- Outcome: The medical outcome whose effect is being measured. This should be a text span copied from the input passage.
- Effect: The effect of the intervention on the outcome, relative to the comparator. The effect should be one of the following three values: ("significantly increased", "significantly decreased", "no significant difference").
- Evidence: The evidence for the effect. This should be a text span copied from the input passage.

Please format your output as a JSON array. Each entry in the output should be an array containing the 5 elements listed above, in the following order: [<intervention>, <comparator>, <outcome>, <effect>, <evidence>].

For example, an output with two findings might read:
```
[["aspirin", "placebo", "headache severity", "significantly decreased", "Mean headache severity was significantly decreased in the aspirin group compared to the placebo group (p < 0.05)."], ["aspirin", "placebo", "weight loss", "no significant difference", "We did not observe any difference in weight loss between the group given aspirin relative to the control group"]]
```

There are 6 finding(s) in the abstract below. Please extract them. Output only the JSON array with these 6 findings. Do not include any additional text.

Abstract:
ABSTRACT.BACKGROUND: Results of previous reports on ischemic postconditioning in animals and humans were very encouraging. Although ischemic postconditioning possessed a wide prospect of clinical application, debates on the precise ischemic postconditioning algorithm to use in clinical settings were ongoing. In this regard, pharmacological strategies were possible alternative methods. Accumulating data demonstrated that pharmacological postconditioning with morphine conferred cardioprotection in animals. This trial aimed to evaluate the effect of morphine-induced postconditioning on protection against myocardial ischemia/reperfusion injury in patients undergoing corrections of Tetralogy of Fallot (TOF).

ABSTRACT.METHODS: Eight-nine consecutive children scheduled for corrections of TOF were enrolled and randomly assigned to either a postconditioning group (patients received a dose of morphine (0.1 mg/kg) injected via a cardioplegia needle into the aortic root for direct and focused delivery to the heart within 1 minute starting at 3 min before aorta cross-clamp removal, n=44) or a control group (the same protocol was performed as in the postconditioning group except that patients received the same volume of saline instead, n=45). The peri-operative relevant data were investigated and analyzed, and the cardiac troponin I (cTnI) was assayed preoperatively, and then 4 h, 8 h, 12 h, 24 h and 48 h after reperfusion.

ABSTRACT.RESULTS: Morphine-induced postconditioning reduced postoperative peak cTnI release as compared to the control group (0.57 ± 0.15 versus 0.75 ± 0.20 ng/mL, p<0.0001). Morphine-induced postconditioned patients had lower peak inotropic score (5.7 ± 2.4 versus 8.4 ± 3.6, p<0.0001) and shorter duration of mechanical ventilation as well as ICU stay (20.6 ± 6.8 versus 28.5 ± 8.3 hours, p<0.0001 and 40.4 ± 10.3 versus 57.8 ± 15.2 hours, p<0.0001, respectively), while higher left ventricular ejection fraction as well as cardiac output (0.57±0.15 versus 0.51±0.13, p=0.0467 and 1.39 ± 0.25 versus 1.24 ± 0.21 L/min, p=0.0029, respectively) as compared to the control group during the first postoperative 24 hours.

ABSTRACT.CONCLUSIONS: Morphine-induced postconditioning may provide enhanced cardioprotection against ischemia/reperfusion injury in children undergoing corrections of TOF.

Findings:
[["morphine (0.1 mg/kg) injected via a cardioplegia needle into the aortic root", "control group (the same protocol was performed as in the postconditioning group except that patients received the same volume of saline instead", "postoperative peak cTnI release", "significantly decreased", "Morphine-induced postconditioning reduced postoperative peak cTnI release as compared to the control group (0.57 \u00b1 0.15 versus 0.75 \u00b1 0.20 ng/mL, p\u0026lt;0.0001)."], ["morphine (0.1 mg/kg) injected via a cardioplegia needle into the aortic root", "control group (the same protocol was performed as in the postconditioning group except that patients received the same volume of saline instead", "postoperative peak cTnI release", "significantly decreased", "Morphine-induced postconditioning reduced postoperative peak cTnI release as compared to the control group (0.57 \u00b1 0.15 versus 0.75 \u00b1 0.20 ng/mL, p\u003c0.0001)."], ["morphine (0.1 mg/kg) injected via a cardioplegia needle into the aortic root", "control group (the same protocol was performed as in the postconditioning group except that patients received the same volume of saline instead", "peak inotropic score ; duration of mechanical ventilation as well as ICU stay", "significantly decreased", "Morphine-induced postconditioned patients had lower peak inotropic score (5.7 \u00b1 2.4 versus 8.4 \u00b1 3.6, p\u0026lt;0.0001) and shorter duration of mechanical ventilation as well as ICU stay (20.6 \u00b1 6.8 versus 28.5 \u00b1 8.3 hours, p\u0026lt;0.0001 and 40.4 \u00b1 10.3 versus 57.8 \u00b1 15.2 hours, p\u0026lt;0.0001, respectively)"], ["morphine (0.1 mg/kg) injected via a cardioplegia needle into the aortic root", "control group (the same protocol was performed as in the postconditioning group except that patients received the same volume of saline instead", "peak inotropic score ; duration of mechanical ventilation as well as ICU stay", "significantly decreased", "Morphine-induced postconditioned patients had lower peak inotropic score (5.7 \u00b1 2.4 versus 8.4 \u00b1 3.6, p\u003c0.0001) and shorter duration of mechanical ventilation as well as ICU stay (20.6 \u00b1 6.8 versus 28.5 \u00b1 8.3 hours, p\u003c0.0001 and 40.4 \u00b1 10.3 versus 57.8 \u00b1 15.2 hours, p\u003c0.0001, respectively),"], ["morphine (0.1 mg/kg) injected via a cardioplegia needle into the aortic root", "control group (the same protocol was performed as in the postconditioning group except that patients received the same volume of saline instead", "left ventricular ejection fraction; cardiac output", "significantly increased", "while higher left ventricular ejection fraction as well as cardiac output (0.57\u00b10.15 versus 0.51\u00b10.13, p=0.0467 and 1.39 \u00b1 0.25 versus 1.24 \u00b1 0.21 L/min, p=0.0029, respectively) as compared to the control group during the first postoperative 24 hours."], ["morphine (0.1 mg/kg) injected via a cardioplegia needle into the aortic root", "control group (the same protocol was performed as in the postconditioning group except that patients received the same volume of saline instead", "left ventricular ejection fraction; cardiac output", "significantly increased", ". Morphine-induced postconditioned patients had lower peak inotropic score (5.7 \u00b1 2.4 versus 8.4 \u00b1 3.6, p\u003c0.0001) and shorter duration of mechanical ventilation as well as ICU stay (20.6 \u00b1 6.8 versus 28.5 \u00b1 8.3 hours, p\u003c0.0001 and 40.4 \u00b1 10.3 versus 57.8 \u00b1 15.2 hours, p\u003c0.0001, respectively), while higher left ventricular ejection fraction as well as cardiac output (0.57\u00b10.15 versus 0.51\u00b10.13, p=0.0467 and 1.39 \u00b1 0.25 versus 1.24 \u00b1 0.21 L/min, p=0.0029, respectively) as compared to the control group"]]