Abstract
Objective The study focused on the application value of iteration reconstruction algorithm-based ultrasound and spiral computed tomography (CT) examinations, and the safety of dexmedetomidine anesthesia in acute abdominal surgery. Methods 80 cases having the acute abdomen surgery were selected as the research subjects. They were divided into group A (40 cases) and group B (40 cases) according to the anesthetic drugs used in the later period. The experimental group was injected with propofol, remifentanil, and atracurium combined with dexmedetomidine; the control group was injected with propofol, remifentanil, and atracurium only. After the operation, the patient was for observed for the pain, agitation, adverse reactions, heart rate (HR), and blood pressure. All patients received ultrasound and spiral CT examinations, and based on the characteristics of the back-projection algorithm, an accelerated algorithm was established and used to process the image, and according to which, the patient's condition and curative effects were evaluated. Results After image reconstruction, the ultrasound and spiral CT images were clearer with less noise and more prominent lesions than before reconstruction. Before image reconstruction, the accuracy rates of ultrasound and spiral CT in diagnosing acute abdomen were 92.3% and 91.1%, respectively. After reconstruction, the corresponding numbers were 96.3% and 98.1%, respectively. After reconstruction, the accuracy of the two methods in diagnosing acute abdomen was significantly improved compared with that before reconstruction, and the difference was statistically significant (P < 0.05). The Ramsay score of the experimental group was significantly higher than that of the control group at each time period, P < 0.05; the agitation score and visual analogue scale (VAS) score of the experimental group were significantly lower than the control group at each time period after waking up, P < 0.05. Conclusion Reconstruction algorithm-based ultrasound and spiral CT images have high application value in the diagnosis of patients with acute abdomen, and dexmedetomidine has good safety in anesthesia surgery.
Highlights
Acute abdomen is a common disease in clinic, divided into traumatic and nontraumatic ones
The experimental group was injected with propofol (4~6 mg/kg), remifentanil (0.15~0.2 mg/kg), and atracurium combined (0.1~0.15 mg/kg) with dexmedetomidine; the control group was injected with propofol (4~6 mg/kg), remifentanil (0.15~0.2 mg/kg), and atracurium alone (0.1~0.15 mg/kg)
The anesthesia machine was connected for intermittent positive pressure ventilation, the breathing rate was set to 12-15 times/min, the tidal volume was set to 8-10 mL/kg, the inspiratoryexpiratory ratio was set to 1 : 2, and the fresh oxygen was inhaled at 2 L/min
Summary
Acute abdomen is a common disease in clinic, divided into traumatic and nontraumatic ones. It is a general term for diseases mainly manifesting as acute pain in different parts of the abdomen. It has the characteristics of rapid onset, rapid progress, and many changes. The diagnosis of acute abdomen and the evaluation of curative effects rely on the rich experience of doctors and the imaging examination is commonly performed. Ultrasound and spiral computed tomography (CT) examinations are the preferred imaging methods for diagnosis and evaluation of acute abdomen [3]. With a variety of ultrasound-sensitive probes being developed, ultrasound can display
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