Crioanalgesia toracoscópica: nueva estrategia para el control del dolor postoperatorio en cirugía del pectus excavatum / Thoracoscopic cryoanalgesia: A new strategy for postoperative pain control in minimally invasive pectus excavatum repair

Introducción: Publicaciones recientes reportaron el alta temprana y bajos requerimientos de opioides para el control del dolor postope-ratorio en la reparación mínimamente invasiva del pectus excavatumtras crioablación bilateral de nervios intercostales. Nuestro objetivo es describir nuestra experiencia inicial con esta técnica. Material y métodos: Análisis retrospectivo de historias clínicas de pacientes sometidos a crioanalgesia toracoscópica bilateral durante la reparación mínimamente invasiva del pectus excavatum en nuestra institución desde septiembre de 2018 a marzo de 2019. Técnica: Se aplicó una criosonda a -70°C bajo visión toracoscópica durante 2 minutos del 3º al 7º espacio intercostal, de manera bilateral. El dolor postoperatorio fue evaluado con una Escala Visual Analógica. Resultados: Se incluyeron 21 pacientes, de los cuales el 90% era de sexo masculino con una edad media de 15,2 ± 4,29 años y un peso de 53,6 ± 15,33 kg. El índice de Haller promedio fue de 5,1 ± 2,97 y el índice de corrección de 37,6 ± 13,77%. El número promedio de implantes fue de 2,55 ± 0,74. La duración media de la crioanalgesia fue de 39,9 ± 21,1 minutos. Ninguno recibió anestesia peridural. El tiempo de internación postquirúrgico fue de 1,64 ± 0,73. La necesidad de rescate con opiáceos fue menor a 1 dosis en el 71,3%. La puntuación de dolor en los días postoperatorios 1, 3, 7 y 21 fue, en promedio, de 2,55; 2,01; 0,5 y 0,06, respectivamente. Conclusiones: El empleo de la crioanalgesia toracoscópica bilateral permitió el alta hospitalaria temprana y buen control del dolor postoperatorio en todos los casos, convirtiéndose en el método analgésico de elección en nuestra práctica clínica

Objective: Recent publications report early discharge and low opioid requirements after minimally invasive pectus excavatum repair treated with bilateral intercostal nerve cryoablation. Our aim is to report our initial experience with this technique. Materials and methods: Retrospective analysis of medical records of patients undergoing bilateral thoracoscopic cryoanalgesia during minimally invasive pectus excavatum repair within our institution from September 2018 to March 2019. Technique: A cryoprobe was applied at -70 ºC for 2 minutes each from the 3rd to the 7th intercostal nerves bilaterally under thoracoscopic control. Postoperative pain was assessed using a visual analogue scale (VAS). Results: Twenty-one patients were included. Ninety percent were male, the mean age being 15.2 ± 4.29 years, and the mean weight being 53.6 ± 15.33 kg. The average Haller index was 5.1 ± 2.97, and the mean repair index was 37.6 ± 13.77%. The mean number of implants intro-duced was 2.55 ± 0.74. The mean duration of cryoanalgesia was 39.9 ± 21.1. No patients received epidural anesthesia. Mean postoperative stay was 1.64 ± 0.73 days. Seventy-one percent of the patients required 1 dose of opioids at the most for postoperative pain control. According to the VAS, the average pain score on postoperative days 1, 3, 7, and 21 was 2.55, 2.01, 0.5, and 0.06, respectively. Conclusions: Bilateral thoracoscopic cryoanalgesia during minimally invasive pectus excavatum repair leads to early discharge and good postoperative pain control in all cases. Cryoanalgesia has become our treatment of choice for pain control in the thoracoscopic repair of pectus excavatum

Alternativas anestésicas a la inyección de amidas por vía subcutánea en punciones arteriales para gasometría: una revisión sistemática / Alternatives to subcutaneous injection of amino-amide or amino-ester anesthetics before arterial puncture for blood gas analysis: a systematic review

Introducción y objetivo: La punción arterial para gasometría es una técnica dolorosa. La estrategia anestésica de elección consiste en la inyección local de amidas o esteres por vía subcutánea, pero resulta poco frecuente en algunos ámbitos asistenciales, como los servicios de urgencias. El objetivo de este trabajo es en describir las estrategias anestésicas distintas a la técnica clásica de inyección local de amidas o esteres y evaluar su eficacia en la punción arterial para gasometría. Método: Se realizó una revisión sistemática de la literatura a través de 6 bases de datos bibliográficas. Fueron seleccionados ensayos clínicos publicados entre 2000 y 2018, en inglés o español, que comparasen el dolor autopercibido por el paciente inmediatamente después de una punción arterial para gasometría en función de si se les aplicó alguna medida anestésica diferente a la inyección subcutánea de amidas o esteres frente a otro procedimiento anestésico local, un placebo o ninguna intervención anestésica. Resultados: Se localizaron 16 ensayos clínicos aleatorizados: 4 evaluaron la aplicación de anestésicos tópicos compuestos a base de esteres o amidas, 2 la punción ecoguiada, 4 el empleo de agujas de pequeño calibre o jeringuillas especiales, 1 el uso de inyectores a presión sin aguja y 5 la crioanestesia mediante hielo o aerosoles. Conclusión: Tan sólo el uso de agujas de calibre muy fino, la sustitución de jeringuillas clásicas por inyectores a presión sin aguja para la administración de amidas o esteres subcutáneas o la aplicación previa de hielo durante al menos 3 minutos se mostraron eficaces en la reducción del dolor derivado de la punción arterial para gasometría

Background and objective: Arterial puncture for blood gas analysis is a painful procedure in the emergency department (ED). Local subcutaneous injection of anesthetics containing amino amides or esters is the usual painrelief technique applied before arterial puncture, but it is little used in some care settings, such as the ED. We aimed to analyze the literature on anesthetic approaches other than the traditional one of local injection of amino-amide or amino-ester compounds for pain relief during arterial puncture and to assess the efficacy of the alternatives. Methods: A systematic review of the literature was conducted in 6 bibliographic databases. We selected randomized clinical trials (RCTs) published in English or Spanish between 2000 and 2018. The trials compared self-reported pain immediately after arterial puncture for blood gas analysis. Some form of anesthesia other than local injection of an amino-amide or -ester compound was compared to another anesthetic technique, placebo, or no anesthetic. Results: We found 16 RCTs. Four compared the effect of topical anesthetic creams containing amino amides and/or amino esters, two assessed ultrasound-guided puncture, four used small-caliber needles or special syringes, one used a needle-free high-pressure anesthetic injection system, and five studied cryoanesthesia by application of ice or aerosols. Conclusion: The only effective alternative approaches to pain relief during arterial puncture for blood gas analysis were the use of very fine-caliber needles, the use of needle-free pressure injectors for subcutaneous delivery of amino amides, and the application of ice for at least 3 minutes

Cryoanalgesia in Patients Undergoing Nuss Repair of Pectus Excavatum: Technique Modification and Early Results.

PURPOSE: The Nuss procedure for surgical correction of pectus excavatum often causes severe postoperative pain. Cryoanalgesia of intercostal nerves is an alternative modality for pain control. We describe our modification of the cryoICE™ probe that allows for nerve ablation through the ipsilateral chest along with early results utilizing this technique. METHODS: To allow for ipsilateral nerve ablation, a 20-French chest tube was cut and secured to the cryoICE probe, thus providing insulation for the malleable end of the probe. A 3-year retrospective review of patients undergoing Nuss repair at our institution was performed. Patients who received cryoanalgesia (cryo, n = 6) were compared with a historical control cohort who did not receive cryoanalgesia (nocryo, n = 13) during Nuss repair. Hospital length of stay, postoperative narcotic requirement (PNR), and highest postoperative pain score were collected. RESULTS: Both cohorts were similar regarding age, BMI, and pectus index. The cryo group had a significantly less PNR (6.4 versus 17.9 doses, P = .05) and was discharged on average >1 day earlier than nocryo patients (3.7 versus 2.2 days, P = .01). No complications occurred in either group. CONCLUSIONS: Our technique modification simplifies previously described approaches to intercostal nerve cryoablation. Patients undergoing this adjunct benefit with less PNR and a faster discharge time.

Topical cryoanesthesia for the relief of pain caused by steroid injections used to treat hypertrophic scars and keloids.

Intralesional steroid injections are the standard treatment for hypertrophic scars and keloids. The procedure is, however, quite painful and is unpopular with patients because of this. Topical application of anesthetic creams, such as Ametop gel (tetracaine) and EMLA cream (lidocaine and prilocaine), has limited efficacy because of poor drug penetration. The onset of the analgesic effect is also slow, which means that the use of topical anesthetics is time-consuming in clinical practice.We hypothesized that a commercially available cryotip could be used to provide fast-acting topical cryoanesthesia that would reduce the pain associated with steroid injections.Thirty patients with hypertrophic scars or keloids were enrolled in the study. Scars were injected with the steroid, triamcinolone acetonide, with or without prior application of the cryotip (-10 °C) for 15 seconds. The degree of pain was evaluated in each case using the visual analogue scale (VAS) and the verbal descriptor scale (VDS), together with any side-effects caused by application of the cryotip.The VAS pain scores showed a statistically significant (P < .01) difference between the pretreated and the control scars (pain scores 7.87 ±â€Š1.31 and 2.7 ±â€Š1.37, respectively). The VDS pain scores also showed a statistically significant (P < .01) difference between the pretreated and the control scars. And its average scores were 7.89 ±â€Š0.32 and 2.68 ±â€Š0.25, respectively.Application of the cryotip before injection could provide a rapid and effective means of reducing the pain associated with steroid injections. Painless would result in better therapeutic effect.

Ethyl chloride as a cryoanalgesic in pediatrics for venipuncture.

INTRODUCTION: Ethyl chloride can be used as a cryoanalgesic, but with the availability of alternative and relatively safer topical analgesics, its use has decreased. However, it still has the advantage of being quicker to apply compared with other topical analgesics, making it ideal for use in the outpatient departments. We wanted to compare the effectiveness of ethyl chloride as an analgesic during venipuncture in children. METHODS: Venipuncture was carried out using either no analgesia (NO), ethyl chloride spray (EC), or application of the topical anesthetic Ametop (TA) on children attending the phlebotomy outpatient service by experienced pediatric phlebotomists. A pain score was recorded using either the Faces scoring system or the Faces, Legs, Activity, Cry Consolability scoring system. RESULTS: A total of 55 patients were included in the study, 18 from group EC, 18 from group TA, and 19 from group NO. Thirteen patients from both groups EC and TA and 17 from group NO scored 2 or less on the pain scores. DISCUSSION: The use of ethyl chloride was as effective as topical anesthetics in preventing distress to children in venipuncture. However, in the appropriate situations, the use of NO could also be comfortable to the child if venipuncture was done by specialist pediatric phlebotomists.

Providing pain relief for laser resurfacing: effectiveness of the CoolAnalgesia device.

Laser resurfacing is a painful procedure, and is therefore usually carried out under general anaesthetic or local anaesthetic with sedation. However, the small but significant risk of adverse events from either of these methods has resulted in an effort to develop other methods of controlling the pain associated with the use of lasers. This trial describes of the use of a cooling device (the CoolAnalgesia device) with a carbon dioxide laser. The only anaesthetic used was a eutectic mixture of lidocaine anaesthetic (EMLA) applied as a cream to the face at least 60 min prior to the procedure. Twenty consecutive patients attending two laser centres for facial resurfacing were recruited. Each patient was asked to assess the level of pain on a visual analogue scale from 1-10 every 2 min during lasering. Only one of the patients had a mean pain score for the duration of the treatment of above five, four patients recorded a pain score of above five at some stage during their treatment, but none requested that the treatment be stopped. It would appear that the CoolAnalgesia device in combination with EMLA cream provides a level of anaesthesia sufficient to allow laser resurfacing without the use of local anaesthetic injections or intra-venous agents.