An interventional study of Glycopyrrolate and normal saline in Glycopyrrolate, sponsored by Zhuan Zhang. Completed at 1 site in China. Open to participants aged 65 Years and older. Per ClinicalTrials.gov, last updated 2026-05-08.
Sponsored by Zhuan Zhang · Not applicable, Interventional, and Prevention
Gastrointestinal tumor is one of the highest incidence of malignant tumors in our country, with the incidence increasing year by year. Laparoscopic gastrointestinal surgery ,due to having less bleeding ,small trauma ,Rapid recovery ,has become the main means for the treatment of gastrointestinal surgery. Under general anesthesia, mechanical ventilation can lead to repeated mechanical dilation of alveoli, which can lead to mechanical injury of alveolar epithelium, reduce lung compliance, affect lung function, and increase postoperative complications and hospital stay of patients. Glycopyrrolate acts selectively on M1 and M3 receptors, and is 3-5 times more selective to M3 and M1 receptors than M2 receptors. Therefore, as preoperative medication for elderly patients, it has less effect on the cardiovascular system and can stabilize the heart rate,compared with atropine.However, its influence on the respiratory system in the field of anesthesia is only limited to the study of inhibiting glandular secretion at present, and there are no clear reports on the study of respiratory mechanics. The objective of this study was to evaluate the effect of glycopyrrolate on oxygenation index in elderly patients undergoing radical surgery for gastrointestinal malignant tumor.
Zhuan Zhang is the lead sponsor of 16 studies on the registry; 4 are open to participants now.
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Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
ASA physical status
The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECG (electrocardiogram)
A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Drug: Glycopyrrolate
Other: normal saline
At 10 minutes after endotracheal intubation, the Glycopyrrolate group was injected intravenously with 0.006mg/kg glycopyrrolate.
At 10 minutes after endotracheal intubation, the Control group was intravenously injected with equal dose of normal saline.
the oxygenation index
the oxygenation index(PaO₂ / FiO₂) is calculated and recorded accordingly.
Time frame: at the end of surgery
the oxygenation index
the oxygenation index(PaO₂ / FiO₂) is calculated and recorded accordingly.
Time frame: immediately before the intravenous administration of glycopyrrolate or normal saline, 10 minutes after the establishment of CO2 pneumoperitoneum, and 1 hour after the initiation of CO2 pneumoperitoneum
dynamic lung compliance
Time frame: immediately before the intravenous administration of glycopyrrolate or normal saline, 10 minutes after the establishment of CO₂ pneumoperitoneum, 1 hour after the initiation of CO₂ pneumoperitoneum, and at the end of surgery
the alveolar-arterial oxygen gradient
Time frame: immediately before the intravenous administration of glycopyrrolate or normal saline, 10 minutes after the establishment of CO₂ pneumoperitoneum, 1 hour after the initiation of CO₂ pneumoperitoneum, and at the end of surgery
clara cell secretory protein 16 (CC16)
Time frame: Baseline (prior to the induction of general anesthesia), and at the end of surgery
transforming growth factor-β1 (TGF-β1)
Time frame: Baseline (prior to the induction of general anesthesia), and at the end of surgery
This study is completed, as verified in Apr 2026. You cannot join it, but the record below documents what was studied.
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Studies of the drug tested here: Glycopyrrolate
Zhuan Zhang