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Background Percutaneous nephrolithotomy (PCNL) is one of the most frequently used methods of treating large and/or complex kidney stones. Despite the growing interest in this area, there are relatively few papers that report studies of the changes in hemodynamics in the perioperative period and the potential factors that might influence the patient’s condition. This aspect, however, has not been well described in the current literature, although fluctuations in blood pressure, temperature, and electrolyte balance during surgery may also lead to development of complications. Objectives In this study, variations in vital signs during surgery and between surgeries of 134 patients who underwent PCNL were analyzed in relation to other predisposing factors such as hypothermia and the need for blood transfusion. Methods Biochemical data such as systolic blood pressure (SBP) and diastolic blood pressure (DBP), temperature, hemoglobin (Hb), hematocrit (Hct), and serum sodium and potassium were assessed at admission, during PCNL, and at 24 hours after surgery in 134 patients. In this study logistic regression was used to assess the influence of factors such as age, BMI (body mass index), surgery duration, volume of irrigation fluid, number of tracts, estimated blood loss, hypothermia, and requirement of red blood cell transfusions. Results The mean arterial pressure declined during surgery as compared to the preoperative value, reaching a value of 97.34 during the operation. The monitored mean temperature of the patient during the perioperative period was therefore reduced, with a small increase towards the end of the surgery. In the plasma concentrations, there was a decrease compared to pre- and postoperative values, and there was also a decline in 48-hour Hb, Hct, and sodium values. The analysis identified the volume of irrigation fluid as a predictor of mild hypothermia risk. A longer surgery time along with more tracts and worse condition of the patient meant that the patient needed more blood transfusion. It was also noted that none of them influenced the amount of Hb that was lost. Conclusion Variability in the recorded ABCs (airway, breathing, and circulation) before and after PCNL procedures was normative. Despite hypothermia being associated with the volume of irrigation fluids used in surgeries, most of the transfusions were administered in patient-complicated operations and critical states. This suggested that there was potential in defining the modifiable factors that worsen clinically reported outcomes to assist in enhancing protocol.
Background Percutaneous nephrolithotomy (PCNL) is one of the most frequently used methods of treating large and/or complex kidney stones. Despite the growing interest in this area, there are relatively few papers that report studies of the changes in hemodynamics in the perioperative period and the potential factors that might influence the patient’s condition. This aspect, however, has not been well described in the current literature, although fluctuations in blood pressure, temperature, and electrolyte balance during surgery may also lead to development of complications. Objectives In this study, variations in vital signs during surgery and between surgeries of 134 patients who underwent PCNL were analyzed in relation to other predisposing factors such as hypothermia and the need for blood transfusion. Methods Biochemical data such as systolic blood pressure (SBP) and diastolic blood pressure (DBP), temperature, hemoglobin (Hb), hematocrit (Hct), and serum sodium and potassium were assessed at admission, during PCNL, and at 24 hours after surgery in 134 patients. In this study logistic regression was used to assess the influence of factors such as age, BMI (body mass index), surgery duration, volume of irrigation fluid, number of tracts, estimated blood loss, hypothermia, and requirement of red blood cell transfusions. Results The mean arterial pressure declined during surgery as compared to the preoperative value, reaching a value of 97.34 during the operation. The monitored mean temperature of the patient during the perioperative period was therefore reduced, with a small increase towards the end of the surgery. In the plasma concentrations, there was a decrease compared to pre- and postoperative values, and there was also a decline in 48-hour Hb, Hct, and sodium values. The analysis identified the volume of irrigation fluid as a predictor of mild hypothermia risk. A longer surgery time along with more tracts and worse condition of the patient meant that the patient needed more blood transfusion. It was also noted that none of them influenced the amount of Hb that was lost. Conclusion Variability in the recorded ABCs (airway, breathing, and circulation) before and after PCNL procedures was normative. Despite hypothermia being associated with the volume of irrigation fluids used in surgeries, most of the transfusions were administered in patient-complicated operations and critical states. This suggested that there was potential in defining the modifiable factors that worsen clinically reported outcomes to assist in enhancing protocol.
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