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To explore the effects of pre-treatment with methylene blue on reduced perioperative vascular resistance in patients with obstructive jaundice.
Hemodynamic characteristics of patients with obstructive jaundice are high cardiac output, low peripheral vascular resistance. The molecular basis for this feature is the increased production of NO. Methylene blue can increase peripheral resistance, the mechanism is: methylene blue is an oxidoreductase inhibitor, can inhibit the increased production of NO in the vascular endothelium, thereby increasing peripheral vascular resistance.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Methylene blue | Experimental | 2mg / Kg of methylene blue in volume of 50ml is administrated I.V before anesthesia induction. |
|
| saline | No Intervention | 50ml of saline is administrated I.V before anesthesia induction. |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Methylene Blue | Drug | 2mg / Kg of methylene blue in volume of 50ml is administrated I.V before anesthesia induction. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Peripheral vascular resistance | the dose of vasoconstrictors used to Maintain Peripheral vascular resistance in the normal range (800 ~ 1200dyns / cm5) | through operation completion, an average of 6 hours |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Ning Jiaolin, Doctor | Contact | 0086-15808014085 | Njiaolin1976@126.com |
| Name | Affiliation | Role |
|---|---|---|
| Zheng ShuGuo | MD Study Director Institute of Hepatobiliary Surgery ,Southwest Hospital ,Third Military Medical University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Southwest Hospital | Recruiting | Chongqing | Chongqing Municipality | 400038 | China |
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| ID | Term |
|---|---|
| D041781 | Jaundice, Obstructive |
| ID | Term |
|---|---|
| D007565 | Jaundice |
| D006932 | Hyperbilirubinemia |
| D010335 | Pathologic Processes |
| D013568 | Pathological Conditions, Signs and Symptoms |
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| ID | Term |
|---|---|
| D008751 | Methylene Blue |
| ID | Term |
|---|---|
| D010640 | Phenothiazines |
| D013457 | Sulfur Compounds |
| D009930 | Organic Chemicals |
| D006575 | Heterocyclic Compounds, 3-Ring |
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| Southwest Hospital | Recruiting | Chongqing | Chongqing Municipality | 400038 | China |
|
| D012877 | Skin Manifestations |
| D012816 | Signs and Symptoms |
| D000072471 |
| Heterocyclic Compounds, Fused-Ring |
| D006571 | Heterocyclic Compounds |