Acute and Critical Care

Randomized Controlled Trial

Optimal Timing of Topical Lidocaine Spray on the Hemodynamic Change of Tracheal Intubation: Keun Seok Lee, Hyun Jung Shin, Yang Ju Tak, Sang Tae Kim; Korean J Crit Care Med. 2011;26(2):89-93.; DOI: https://doi.org/10.4266/kjccm.2011.26.2.89

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Abstract PDF: BACKGROUND
Tracheal intubation stimulates the sympathetic nervous system, resulting in hypertension, tachycardia and sometimes critical complications, especially in patients with underlying hypertension, cardiovascular disease or cerebrovascular disease. In this study, we sprayed 4% lidocaine into the trachea before intubation, and observed the hemodynamic changes after tracheal intubation.
METHODS
We randomly allocated 87 patients, whose ASA physical status was I or II, into three groups. The 4% topical lidocaine was sprayed before intubation at the following specific times: just before intubation (group 0), or 1 minute (group 1) and 2 minutes before intubation (group 2). For maintenance of anesthesia, TIVA (total intravenous anesthesia; propofol-remifentanil infusion with orchestra(R)) was used. We observed hemodynamic changes between the groups just after the intubation, as well as 1, 3 and 5 minutes after the intubation. Hemodynamic changes were also monitored in the same group.
RESULTS
When the patients arrived at the operating room, we found no significant difference in heart rate and arterial pressure between the groups. However, heart rate after intubation in group 1 was significantly lower than group 0. The diastolic and mean arterial pressure just after intubation were lower in group 1 and 2 than in group 0.
CONCLUSIONS
Spraying lidocaine 1 or 2 minutes before intubation was more effective than spraying it just before intubation for reducing hypertensive responses after intubation.

Original Articles

A Study on Estimating the Blood Pressure by Using the Pulse Wave Transit Time in Shock Patients Who Received Vasopressor Drugs: Gyeong Nam Park, Won Young Sung, Sang Won Seo, Sung Youp Hong, Young Mo Yang, Jang Young Lee, Nak Jin Sung, Hee Bum Yang; Korean J Crit Care Med. 2009;24(1):11-16.; DOI: https://doi.org/10.4266/kjccm.2009.24.1.11

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1 Crossref

BACKGROUND
Blood pressure is clinically used for monitoring shock patients and as a therapeutic indicator for them. Non-invasive blood pressure measurement has weak points such as the use of a cuff and it is a discontinuous measurement. A method of measuring the blood pressure by using the PWTT (pulse wave transit time) has been studied to make up for those weak points. If blood pressure monitoring can be done by using the difference of the PWTT between different points in the body, then this method will be a quite useful to monitor the BP of seriously ill patients. This study aimed to verify whether or not the PWTT has a significant correlation with the blood pressure of shock patients who received vasopressor infusion and whether this method is clinically applicable.
METHODS
The study subjects were 20 shock patients who were hospitalized in intensive care units and they had received vasopressor, and we measured the PWTT and we analyzed its correlation with the SBP (systolic blood pressure) and DBP (diastolic blood pressure), as measured by non-invasive monitoring. We then determined the effects of the PWTT on the SBP and DBP.
RESULTS
From the results of correlation analysis between the PWTT and the SBP and DBP, the SBP displayed a statistically significant negative correlation with the PWTT of 18 patients, while no significant correlation between the PWTT and DBP was observed. At the same time, from the results of the regression analysis of the blood pressures and the PWTT of each patient, it was found that the PWTT had a negative effect on the SBP of all the patients, except two.
CONCLUSIONS
The PWTT has a negative correlation with the SBP of the patients who received vasopressor infusion.

Citations

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Development of Blood Pressure Simulator for Test of the Arm-type Automatic Blood Pressure Monitor
S.H. Kim, S.U. Yun, M.H. Cho, S.J. Lee, M.H. Lim, S.Y. Seo, G.R. Jeon
Journal of Sensor Science and Technology.2015; 24(4): 239. CrossRef

Intraoperative Carotid Sinus Hypersensitivity and Postoperative Complication of Radical Neck Dissection Retrospective Study: Tae Il Kim, Hae Ja Lim, Seong Ho Chang, Nan Sook Kim; Korean J Crit Care Med. 1998;13(1):49-54.

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Abstract PDF: BACKGOUND: Postoperative complications in the geriatric patients undergoing radical neck dissection are generally considered to be more severe than young patients. The incidence of carotid sinus hypersensitivity in elderly patients is also considered to be higher than the young. The comparison between old (above 65 years) and young (below 65 years) aged groups about intraoperative carotid sinus hypersensitivity and postoperative complication is necessary for safe anesthesia.
METHODS
Sixty five adult patients, of either sex, regardless of age, given radical neck dissection from January 1990 to January 1998, were investigated for the incidence of intraoperative carotid sinus hypersensitivity and postoperative hypertension by way of retrospective chart review. The authors also examined the postoperative complications such as high fever, pulmonary, cardiac and renal complications, cerebrovascular diseases and neurologic injuries.
RESULTS
The incidence of intraoperative carotid sinus hypersensitivity were 28% in elderly patients (n=25), 10% in young patients (n=40) but there was no statistical significance. The incidence of postoperative hypertension were 79.1% in patients with hypertension history, 34.1% in patients without hypertension history and there was statistical significance between the two groups (P=0.001). The incidence of postoperative pulmonary complication were 44% in elderly patients, 20% in young patients, and there was also statistical significance between the two groups (P=0.038). There was no statistical significance in the incidence of postoperative high fever above 38.5degrees C between the two groups (p=0.059).
CONCLUSION
After the radical neck dissection, the geriatric patients had a greater incidence of postoperative pulmonary complications than young patients and the most relating factor to postoperative hypertension was previous history of hypertension. Therefore optimal preoperative preparations for the hypertensive patients and the prevention and immediate treatment of the postoperative pulmonary complications in geriatric patients are very important during the radical neck dissection.

Hemodynamic Changes during Isolated Liver Hemoperfusion of Hepatoma: Seong Jo Ha, Yoon Jin Hwang, Dong Gun Lim; Korean J Crit Care Med. 2004;19(2):115-120.

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Abstract PDF: BACKGROUND
To analyze hemodynamic changes during single catheter technique of hepatic venous isolation and extracorporeal charcoal hemoperfusion for malignant liver tumor. METHODS: Drugs for chemotherapy were infused to the liver through hepatic artery. With 4-lumen- 2-balloon (4L-2B) catheter, hepatic venous blood was circulated to the extracorporeal charcoal system. During extracorporeal charcoal system circulation, drugs were eliminated and the blood was reinfused to supra-hepatic vein-IVC. At the same time, IVC was clamped. Systemic vascular resistance index (SVRI), cardiac index (CI), stroke volume index (SVI), mean arterial pressure (MAP), heart rate (HR) and arterial blood gas were measured after 4L-2B catheter insertion (T1), during test circulation (T2), after 20min chemotherapy (T3) and after 10min reperfusion (T4). RESULTS: MAP was decreased at T3 compared to T1 and increased at T4 compared to T3. CI was decreased at T3 and increased at T4 compared to T1. SVRI was decreased at T4 compared to T1. HR was increased at T2 and T3 compared to T1. SVI was decreased at T2 and T3 compared to T1. CONCLUSIONS: During clamping of IVC, MAP is decreased by decreased SVI in spite of increased HR. After IVC is released and the stagnated blood of lower extremity is recirculated, the MAP is returned to the value of after catheter insertion by increased SVI in spite of decreased SVRI.

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