Pediatric extracorporeal cardiopulmonary resuscitation: single-center study

Background/aim: Extracorporeal cardiopulmonary resuscitation (ECPR) is defined as the venoarterial extracorporeal membrane oxygenation (VA-ECMO) support in a patient who experienced a sudden pulseless condition attributable to cessation of cardiac mechanical activity and circulation. We aimed to evaluate the clinical outcomes of our ECPR experience in a pediatric patient population. Materials and methods: Between September 2014 and November 2017, 15 children were supported with ECPR following in-hospital cardiac arrest (IHCA) in our hospitals. VA-ECMO setting was established for all patients. Pediatric cerebral performance category (PCPC) scales and long-term neurological prognosis of the survivors were assessed. Results: The median age of the study population was 60 (4­156) months. The median weight was 18 (4.8­145) kg, height was 115 (63­172) cm, and body surface area was 0.73 (0.27­2.49) m2. The cause of cardiac arrest was a cardiac and circulatory failure in 12 patients (80%) and noncardiac causes in 20%. Dysrhythmia was present in 46%, septic shock in 13%, bleeding in 6%, low cardiac output syndrome in 13%, and airway disease in 6% of the study population. Median low-flow time was 95 (range 20­320) min. Central VA- ECMO cannulation was placed in only 2 (13.3%) cases. However, the return of spontaneous circulation (ROSC) was obtained in 10 (66.6%) patients, and 5 (50%) of them survived. Overall, 5 patients were discharged from the hospital. Finally, survival following ECPR was 33.3%, and all survivors were neurologically intact at hospital-discharge. Conclusion: ECPR can be a life-saving therapeutic strategy using a promising technology in the pediatric IHCA population. Early initiation and a well-coordinated, skilled, and dedicated ECMO team are the mainstay for better survival rates.

A Randomized, Double-Blind, Graded Dose-Response Study of Norepinephrine Administration for Prevention of Post-Spinal Hypotension during Elective Cesarean Delivery.

Norepinephrine has been recently introduced for prophylaxis against post-spinal hypotension during cesarean delivery; however, no data are available regarding its optimum dosing scheme. The primary objective of this study is to compare three different infusion and bolus dose combinations of norepinephrine for prophylaxis against post-spinal hypotension during cesarean delivery. This randomized, double-blind study was performed between February 2021 and May 2022. The study protocol was registered at Clinicaltrials.gov with the identification number NCT04701190. A total of 192 parturients were enrolled into this study. Patients were assigned to three groups-Zero-Bolus High-Infusion (Group ZBHI, 0 µg/0.1 µg kg-1 min-1, n = 61), Moderate-Bolus Moderate-Infusion (Group MBMI, 5 µg/0.075 µg kg-1 min-1, n = 61) and High-Bolus Low-Infusion (Group HBLI, 10 µg/0.05 µg kg-1 min-1, n = 61)-according to different combinations of norepinephrine infusion and bolus doses. All patients received spinal anesthesia with 10 mg hyperbaric bupivacaine plus 12.5 µg fentanyl. Immediately after cerebrospinal fluid was obtained, patients underwent a norepinephrine protocol corresponding to the randomized group. The primary outcome was the incidence of post-spinal hypotension. Secondary outcomes were post-delivery hypotension, frequency of post-spinal hypertension and bradycardia, and neonatal outcomes. The incidence of post-spinal hypotension was 11.7% in Group HBLI, 6.7% in Group ZBHI and 1.7% in Group MBMI (p = 0.1). The overall incidence of post-delivery hypotension in parturients was 41.1% (p = 0.797). The lowest frequency of post-spinal bradycardia (8.3%) and hypertension (11.7%) was seen in Group HBLI. The neonatal APGAR scores at 1st minute were higher in Group MBMI than in Group ZBHI (8.58 vs. 8.23, p = 0.001). All three infusion and bolus dose combinations of norepinephrine effectively reduced the incidence of post-spinal hypotension. However, high-dose bolus (10 µg) followed by low-dose infusion (0.05 µg kg-1 min-1) of norepinephrine can be preferred due to the reduced frequency of bradycardia and hypertension during cesarean delivery under spinal anesthesia.

An indirect effect of COVID-19 pandemic: Increased pediatric perforated appendicitis rate due to delayed admission.

Objectives: Appendicitis is a common surgical emergency among children. The coronavirus pandemic affected the system of hospitals more than any other field, and great amount of people were concerned about visiting the hospitals for any reason. In this study, it was aimed to evaluate the profile of appendicitis by emphasizing perforated and acute appendicitis in the pandemic period and to compare the rates with previous three years. Material and Methods: Charts of the children who underwent laparoscopic appendectomy due to appendicitis between March 11-September 30 between 2017-2020 were retrospectively analyzed in terms of demographic data, duration of symptoms, duration between hospital admission and surgery, radiologic imaging and perioperative outcomes. Results: This study includes 467 children who underwent laparoscopic appendectomy. There were 97 procedures in 2020, 111 in 2019, 146 in 2018 and 113 in 2017. Multiple comparison tests revealed that age did not show difference; but onset of symptoms in admission (p= 0.004), hospitalization time before surgery (p <0.001), total hospitalization time (p <0.001) showed statistically significant difference between years. Pairwise comparisons showed that these parameters were increased in 2020 compared to other years. Perforated appendicitis rate was significantly increased in 2020 when compared to previous years. Conclusion: Although there is no direct relation between appendicitis and COVID-19 infection in the current knowledge, perforated appendicitis was found to be increased in children during the COVID pandemic. Reason of the higher rate of perforated appendicitis may be multifactorial; however, the pandemic appears to have a role in increased morbidity in children with appendicitis indirectly due to delay of hospital admissions.

Use of ultrasonography as a noninvasive decisive tool to determine the accurate endotracheal tube size in anesthetized children. / Uso de la ecografía como una herramienta no invasiva decisiva para determinar el tamaño preciso del tubo endotraqueal en niños anestesiados.

BACKGROUND: It is hard to determine the appropriate size and correct tracheal position of endotracheal tube (ETT) in children. The aim of this study is to determine tracheal diameter in children by using ultrasonography technique as objective tool and compare it with commonly used aged based formulas for the ETT size estimation. PATIENTS AND METHODS: Patients undergoing elective surgery in a tertiary children's hospital were prospectively enrolled. The subglottic transverse tracheal diameter was determined by ultrasonography. An anesthesiologist who was blind to ultrasonographic examination, determined the tube size and performed intubation by evaluating the space between vocal cords with the help of a direct laryngoscopic view. Ultrasonographically measured tracheal diameter, tube diameters, leak/pressure controls, and results of age-based tube size calculations were recorded. RESULTS: A total of 61 patients, mean age of 12 ± 4.21 (2- 17) years and mean weight of 38 ± 22.94 (10-106) kg were enrolled. The diameter of trachea measured by ultsonography was 13.0 (11.4-15.1). Outer diameter (mm) of the ETT determined by anesthesiologist was 8.42 ± 1.43; calculated by Cole formula was 9.0 ± 1,42; calculated by Khine formula was 7.67 ± 1.46; calculated by Motoyama formula was 8.33 ± 1.42. ETT cuff was inflated after ETT placement due to leak in 31 (47.7%) patients. Tube was replaced by a larger tube due to excessive leak in one patient. Poor intraclass correlation was found between ultrasonographically determined tracheal diameter and aged based tube diameter calculations (tracheal diameter vs Cole [0.273], Khine [0.207], and Motoyama [0.230]). CONCLUSION: Ultrasonographical determination of transverse tracheal diameter is a suitable method for determining the correct endotracheal tube size when compared with the age based formulas.

Introducción. Es difícil determinar el tamaño adecuado y la posición traqueal correcta del tubo endotraqueal (TET) en los niños. El objetivo de este estudio fue determinar el diámetro traqueal en los niños mediante el uso de la técnica ecográfica como herramienta objetiva y compararlo con fórmulas de uso frecuente basadas en la edad para calcular el tamaño del TET. Pacientes y métodos. Se inscribió de forma prospectiva a pacientes a los que se les iba a practicar una cirugía programada en un hospital pediátrico de alta complejidad. Se determinó el diámetro traqueal transversal infraglótico mediante ecografía. Un anestesista, que no podía ver el examen ecográfico, determinó el tamaño del tubo y realizó la intubación evaluando el espacio entre las cuerdas vocales con la ayuda de la vista directa de un laringoscopio. Se registraron los diámetros traqueales medidos con las ecografías, los diámetros de los tubos, los controles de presión/ pérdida de aire y los resultados de los cálculos del tamaño de los tubos basados en la edad. Resultados. Se inscribieron en total 61 pacientes con una media de edad de 12 ± 4,21 (2-17) y un peso medio de 38 ± 22,94 (10-106). El diámetro de la tráquea en la medición ecográfica fue de 13,0 (11,4-15,1). El diámetro externo del TET determinado por el anestesista fue de 8,42 ± 1,43, el calculado por la fórmula de Cole fue de 9,0 ± 1,42, el calculado por la fórmula de Khine fue de 7,67 ± 1,46 y el calculado por la fórmula de Motoyama fue de 8,33 ± 1,42. En 31 (47,7%) pacientes, se insufló el manguito después de la colocación del TET debido a la pérdida de aire. El tubo tuvo que reemplazarse por uno más grande a causa de la pérdida excesiva de aire en un paciente. Se halló una correlación intraclase deficiente entre los cálculos del diámetro traqueal determinado por ecografía y los cálculos del diámetro del tubo basado en la edad (diámetro traqueal frente a Cole [0,273], Khine [0,207] y Motoyama [0,230]). Conclusión. La medición ecográfica del diámetro traqueal transversal es un método adecuado para determinar el tamaño correcto del tubo endotraqueal en comparación con las fórmulas basadas en la edad.

Uso de la ecografía como una herramienta no invasiva decisiva para determinar el tamaño preciso del tubo endotraqueal en niños anestesiados / Use of ultrasonography as a noninvasive decisive tool to determine the accurate endotracheal tube size in anesthetized children

Introducción. Es difícil determinar el tamaño adecuado y la posición traqueal correcta del tubo endotraqueal (TET) en los niños. El objetivo de este estudio fue determinar el diámetro traqueal en los niños mediante el uso de la técnica ecográfica como herramienta objetiva y compararlo con fórmulas de uso frecuente basadas en la edad para calcular el tamaño del TET. Pacientes y métodos. Se inscribió de forma prospectiva a pacientes a los que se les iba a practicar una cirugía programada en un hospital pediátrico de alta complejidad. Se determinó el diámetro traqueal transversal infraglótico mediante ecografía. Un anestesista, que no podía ver el examen ecográfico, determinó el tamaño del tubo y realizó la intubación evaluando el espacio entre las cuerdas vocales con la ayuda de la vista directa de un laringoscopio. Se registraron los diámetros traqueales medidos con las ecografías, los diámetros de los tubos, los controles de presión/pérdida de aire y los resultados de los cálculos del tamaño de los tubos basados en la edad. Resultados. Se inscribieron en total 61 pacientes con una media de edad de 12 ± 4,21 (2-17) y un peso medio de 38 ± 22,94 (10-106). El diámetro de la tráquea en la medición ecográfica fue de 13.0 (11,4-15,1). El diámetro externo del TET determinado por el anestesista fue de 8,42 ± 1,43, el calculado por la fórmula de Cole fue de 9.0 ± 1,42, el calculado por la fórmula de Khine fue de 7,67 ± 1,46 y el calculado por la fórmula de Motoyama fue de 8,33 ± 1,42. En 31 (47,7%) pacientes, se insufló el manguito después de la colocación del TET debido a la pérdida de aire. El tubo tuvo que reemplazarse por uno más grande a causa de la pérdida excesiva de aire en un paciente. Se halló una correlación intraclase deficiente entre los cálculos del diámetro traqueal determinado por ecografía y los cálculos del diámetro del tubo basado en la edad (diámetro traqueal frente a Cole -amp;#91;0,273-amp;#93;, Khine -amp;#91;0,207-amp;#93; y Motoyama -amp;#91;0,230-amp;#93;). Conclusión. La medición ecográfica del diámetro traqueal transversal es un método adecuado para determinar el tamaño correcto del tubo endotraqueal en comparación con las fórmulas basadas en la edad.

Background. It is hard to determine the appropriate size and correct tracheal position of endotracheal tube (ETT) in children. The aim of this study is to determine tracheal diameter in children by using ultrasonography technique as objective tool and compare it with commonly used aged based formulas for the ETT size estimation. Patients and methods. Patients undergoing elective surgery in a tertiary children's hospital were prospectively enrolled. The subglottic transverse tracheal diameter was determined by ultrasonography. An anesthesiologist who was blind to ultrasonographic examination, determined the tube size and performed intubation by evaluating the space between vocal cords with the help of a direct laryngoscopic view. Ultrasonographically measured tracheal diameter, tube diameters, leak/pressure controls, and results of age-based tube size calculations were recorded. Results. A total of 61 patients, mean age of 12 ± 4.21 (217) years and mean weight of 38 ± 22.94 (10-106) kg were enrolled. The diameter of trachea measured by ultsonography was 13.0 (11.4-15.1). Outer diameter (mm) of the ETT determined by anesthesiologist was 8.42 ± 1.43; calculated by Cole formula was 9.0 ± 1,42; calculated by Khine formula was 7.67 ± 1.46; calculated by Motoyama formula was 8.33 ± 1.42. ETT cuff was inflated after ETT placement due to leak in 31 (47.7%) patients. Tube was replaced by a larger tube due to excessive leak in one patient. Poor intraclass correlation was found between ultrasonographically determined tracheal diameter and aged based tube diameter calculations (tracheal diameter vs Cole -amp;#91;0.273-amp;#93;, Khine -amp;#91;0.207-amp;#93;, and Motoyama -amp;#91;0.230-amp;#93;). Conclusion. Ultrasonographical determination of transverse tracheal diameter is a suitable method for determining the correct endotracheal tube size when compared with the age based formulas.