Procedures for measuring and verifying gastric tube placement in newborns: an integrative review

A Nurse-Driven Protocol for Neonatal Enteral Access Device Placement Confirmation

BACKGROUND

Preterm infants require the use of nasogastric and orogastric enteral access devices (EADs) to provide nutrition and medications. Confirmation of the location of the tip of the EAD is essential to minimize complications. At the study site, EAD location was limited to verifying the centimeter marking at the lip/nares and nonevidence-based methods of visual observation of aspirate and auscultation.

PURPOSE

Implement an evidenced-based EAD placement confirmation protocol, and by 90 days post-education and implementation, achieve adherence of 90%.

METHODS

This quality improvement project implemented a nurse-driven evidence-based protocol for EAD verification. The intervention was based on the New Opportunities for Verification of Enteral Tube Location best practice recommendations. Prior to implementation, education sessions focused on insertion measurement technique and gastric pH measurement. Radiographs, insertion measurement technique, centimeter marking, and gastric pH measurement were used for EAD location confirmation. To determine compliance with the protocol, audits were conducted and questionnaires assessing current practice regarding EAD confirmation were administered pre- and postimplementation.

RESULTS

The protocol increased nursing knowledge regarding evidence-based EAD insertion and verification procedures, incorporated pH measurement into practice, and reduced use of auscultation for confirmation. Nursing adherence to the protocol was 92%.

IMPLICATIONS FOR PRACTICE AND RESEARCH

This provides a model for how to successfully implement and achieve adherence to an evidence-based EAD placement confirmation nurse-driven protocol. Further research is needed to verify the effectiveness of the protocol and establish consensus on approaches specifically for the neonatal population.

Indications, Measurements, and Complications of Ten Essential Neonatal Procedures

About 10% of newborns require some degree of assistance to begin their breathing, and 1% necessitates extensive resuscitation. Sick neonates are exposed to a number of invasive life-saving procedures as part of their management, either for investigation or for treatment. In order to support the neonates with the maximum possible benefits and reduce iatrogenic morbidity, health-care providers performing these procedures must be familiar with their indications, measurements, and potential complications. Hence, the aim of this review is to summarise ten of the main neonatal intensive care procedures with highlighting of their indications, measurements, and complications. They include the umbilical venous and arterial catheterizations and the intraosseous line which represent the principal postnatal emergency vascular accesses; the peripherally inserted central catheter for long-term venous access; the endotracheal tube and laryngeal mask airway for airway control and ventilation; chest tube for drainage of air and fluid from the thorax; and the nasogastric/orogastric tube for enteral feeding. Furthermore, lumber puncture and heel stick were included in this review as very important and frequently performed diagnostic procedures in the neonatal intensive care unit.

A Randomized Clinical Trial to Compare Three Different Methods for Estimating Orogastric Tube Insertion Length in Newborns: A Single-Center Experience in China

Background: Orogastric (OG) and nasogastric (NG) tubes are frequently used in the NICU. Obtaining a relatively accurate estimated length before insertion could significantly reduce complications. While previous studies have mainly focused on the NG tube, OG tubes are more commonly used in China. Purpose: The objective was to determine whether there were differences in the rate of accurate placement among the adapted nose-ear-xiphoid (NEX) method, nose-ear-midway to the umbilicus (NEMU) method, and weight-based (WB) equation in estimating the OG tube insertion distance. Methods: A randomized, controlled, open-label clinical trial to compare the three methods was conducted in a single center. After enrollment, newborns were randomly assigned into three groups. By radiological assessment, the anatomical region for OG tube placement was analyzed. The primary metric was the tip within the gastric body, and the second metric was strictly accurate placement defined as the tube was not looped back within the stomach and the end was located more than 2 cm but less than 5 cm into the stomach, referred to as T10. Results: This study recruited 156 newborns with the majority being preterm infants (n = 96; 61.5 percent), with an average birth weight of 2,200.8 ± 757.8 g. For the WB equation, 96.2 percent (50 cases) of the OG tubes were placed within the stomach, and the rates were 78.8 percent (41 cases) in the adapted NEX and NEMU methods. The strictly accurate placement rates were highest for the WB equation at 80.8 percent (42/52), followed by the adapted NEX method at 65.4 percent (34/52), and the NEMU method at 57.7 percent (30/52). Conclusion: The WB equation for estimating the insertion depth of the OG tube in newborn infants resulted in more precise placement compared to the adapted NEX and NEMU methods.

Assessment the knowledge, care, and experiences of neonatal nurses about enteral nutrition

Enteral-feeding refers to any nutritional method throughout the gastrointestinal tract, including oral feeding. This qualitative study examined the information, experiences, and records of neonatal nurses of enterally fed patients. The study was conducted between 05.04.2018 and 05.05.2018 with 22 nurses (73.3%) working in the neonatal intensive care clinic of Çukurova University Balcali Hospital, Adana, Turkey. The data were collected by "Observation and Interview Form" developed based on the literature. Nurses were observed, and interviews were conducted depending on their appointments. Data were collected by observing each nurse on 2 different days. In all observations; it was determined that the nurses changed the feeding set daily, regularly checked the location of the feeding tube and amount of residue, and administered medication through the feeding tube. In 22.7% of the observations, nurses did not securely fix the feeding tube, 27.2% did not write a daily date on the injector with the residual volume measured, and 31.8% did not wash the injector. All the nurses recorded the amount of feed, residual amounts, and content. At the end of the interviews, 9% of the nurses stated that they had experienced aspiration among the complications encountered during enteral feeding. During the interview, they stated that all nurses were educated about enteral nutrition, had control of whether the probe was in place before feeding, performed residual control, washed their hands before the procedure, fixed the food injector to 1 place, and allowed the food injector to flow spontaneously with negative pressure. According to the results of the interviews and observations, nurses could not reflect on their nursing practices correctly. Nurses working in neonatal intensive care units should be regularly trained to share the results of evidence-based studies on enteral nutrition.

Orogastric Tube Insertion in Extremely Low Birth-Weight Infants

BACKGROUND

Orogastric (OG) tube insertion is a frequent practice performed by nurses in the neonatal intensive care unit (NICU). Combining the nose-ear-mid-umbilicus (NEMU) method with a birth weight (BW)-based method to determine optimal insertion length of OG tubes could reduce misplacement in extremely low birth-weight (ELBW) infants.

PURPOSE

The objective of this study was to determine whether combining the NEMU method with a BW-based method to determine insertion length of OG tubes reduces misplacement of OG tubes in ELBW infants younger than 6 hours.

METHODS

The study included 129 ELBW infants in the NICU younger than 6 hours. We compared the frequency of OG tube misplacements in ELBW infants during 2 different time periods. In period I, the insertion length of OG tubes was estimated with the NEMU method alone. In period II, the insertion length of OG tubes was estimated by combining the NEMU method with a BW-based method. OG tubes were considered misplaced if the tip was above the diaphragm (high) or near the pylorus (low) in radiographs obtained after placement.

RESULTS

Infants who had OG tubes placed by combining both methods were less likely to have low OG tubes (53% in period I vs 34% in period II; P < .05). The BW-based method alone predicted optimal OG tube insertion length in 57 of 89 infants (64%).

IMPLICATIONS FOR PRACTICE AND RESEARCH

Combining the NEMU method with the BW-based method increases the probability of optimal OG tube placement in ELBW infants. Additional studies across multiple centers would validate the diagnostic accuracy of this method.Video abstract available athttps://journals.lww.com/advancesinneonatalcare/Pages/videogallery.aspx .

Nasogastric Bridles are Associated with Improved Tube-Related Outcomes in Children

OBJECTIVE

To compare tube-related outcomes in children with standard tape versus nasal bridle securement of nasogastric tubes (NGTs).

STUDY DESIGN

Single-center, retrospective, correlational study of outcomes from the time of NGT placement until full oral feeds or durable-tube placement. Outcomes of interest included NGT dislodgements, length of stay, emergency department (ED) encounters, radiographic exposures, and adverse skin outcomes. Negative binomial regression and logistic regression were used to analyze differences between groups.

RESULTS

582 children had NGTs secured traditionally [43% female; age at therapy initiation 2.6 months (SD 8.1)] and 173 received nasal bridles [55.5% female; age at therapy initiation 8.4 months (SD 11.8)]. Children with bridled NGTs were 16.67 times less likely to experience ≥1 dislodgement (OR=0.06, 95% CI 0.04, 0.09); 2.5 times less likely to have one more ED visit (OR=0.4, 95% CI 0.19, 0.82), and 4.76 times less likely to require one more radiographic exposure (OR=0.21, 95% CI 0.14, 0.33) than their non-bridled NGT counterparts (all p values <0.02). The mean initial hospital length of stay was 28 and 54 days in the bridled and standard care group respectively (p<0.001). Overall, 62.4% children with bridled NGTs and 77.1% children with unbridled NGTs progressed to full oral feedings and required no further therapy (p<0.001). Adverse skin outcomes were rare in both groups.

CONCLUSION

Children with bridled NGTs experienced fewer dislodgements, days in the hospital, ED encounters, and radiographic exposures than children with traditionally secured NGTs. The majority of children in both groups progressed to full oral feedings. This article is protected by copyright. All rights reserved.

Reining in Nasogastric Tubes: Implementation of a Pediatric Bridle Program

Nasogastric tubes (NG) used for enteral nutrition support of medically complex children (MCC) are often inadvertently removed, risking frequent replacements. Bridles have been shown to provide a safe securement method for NGs in adult patients, but are not widely used in pediatrics. Furthermore, nutritional management of MCC is often fragmented. We established a pediatric NG bridle program to bridge the gap amongst disciplines and improve patient outcomes. In January 2018, a multidisciplinary work group involving nurses, physicians, clinical dietitians, advanced practice providers, and speech-language pathologists was established to develop criteria for patient referral and policies, procedures, and order sets for nutritional management of MCC children with bridled NG tubes. Formal teaching sessions engaged clinicians and administrators to participate in building a successful program. Relevant outcomes of interest are tracked continuously for process performance improvement measures and are reviewed quarterly by the core work group. Patient enrollment began in May 2018 and to date, 244 patients have been enrolled. Adhering to strict enrollment criteria, competency modules and review of patient status provided a solid core for the program and process review. Successful implementation of an NG Bridle program was achieved. Outcomes of interest continue to be monitored for process improvement. Balancing measures are also being tracked for potential downstream effects.

A Cross-sectional Survey of Enteral Feeding Tube Placement and Gastric Residual Aspiration Practices: Need for an Evidence-Based Clinical Practice Guideline

BACKGROUND

Preterm infants routinely require enteral feeding via nasogastric or orogastric tubes as an alternative to oral feeding to meet their nutritional needs. Anecdotal evidence suggests variations in practice related to correct tube placement and assessment of feed intolerance.

PURPOSE

To determine the current practices of enteral feeding tube placement confirmation and gastric residual (GR) aspiration of neonatal clinicians in Australia.

METHODS

A cross-sectional online survey comprising 24 questions was distributed to nursing and medical health professionals working in Australian neonatal care units through 2 e-mail listservs made available by professional organizations.

FINDINGS

The survey was completed by 129 clinicians. A single method was practiced by 50% of the clinicians in confirming tube placement, and most common practice was assessing the pH of GR aspirate. The majority of respondents (96%) reported that they relied on GR aspiration and clinical signs to determine feeding tolerance and subsequent decisions such as ceasing or decreasing feeds. However, the frequency of aspiration, the amount and color of aspirate considered to be normal/abnormal, and decisions on whether to replace gastric aspirate or whether aspiration should be performed during continuous tube feeding varied.

IMPLICATION FOR PRACTICE

This study demonstrated considerable variability in clinical practice for enteral feeding tube placement confirmation and GR aspiration despite most respondents reporting using a unit-based clinical practice guideline. Our study findings highlight the need for not only developing evidence-based practice guidelines for safe and consistent clinical practice but also ensuring that these guidelines are followed by all clinicians.

IMPLICATION FOR RESEARCH

Further research is needed to establish evidence-based methods both for enteral feeding tube placement confirmation and for the assessment of feeding intolerance during tube feeding. In addition, the reasons why evidence-based methods are not followed must be investigated.

Randomized Clinical Trial Comparing Two Methods of Measuring Insertion Length of Nasogastric Tubes in Newborns

INTRODUCTION

The selection of a method for measuring the insertion length of nasogastric tubes in newborns is an important factor in establishing the safe use of this device.

OBJECTIVE

The objective was to verify whether there is a difference in the proportion of correctly placed nasogastric tubes when using the nose, earlobe, mid-umbilicus (NEMU) method and the weight-based equation for measuring the insertion length.

METHODS

This study is a randomized, controlled, blinded study comparing 2 methods of nasogastric insertion at a neonatal unit, with intensive and intermediate care, on 162 randomized individuals. Radiological assessment and pH test were conducted to verify tube placement. Data were collected on sex, birth weight, gestational age, and days of life. A log-binomial model was used to verify whether there were placement differences between investigated methods.

RESULTS

Of the patients, 56.1% were male, who had a mean birth weight of 1886.8 g and gestational age of 32.9 weeks and were 10.8 days old. Radiological images demonstrated that tubes were properly placed in the gastric body in 67.5% of patients using the NEMU method and in 91.5% using the weight-based equation: the weight-based equation was superior to the NEMU method, with a prevalence ratio of 1.36 (95% CI, 1.15-1.44). There was no difference between the 2 methods, according to pH test (P-value: .7179).

CONCLUSION

Based on radiographic confirmation, the weight-based equation for measuring the insertion length of the nasogastric tube in newborns resulted in significantly more nasogastric tubes being placed in the correct intragastric location.

The Use of Ultrasonography for Verifying Gastric Tube Placement in Newborns

BACKGROUND

The use of gastric tubes in newborns admitted to a neonatal intensive care unit is fairly high, and there is a risk of serious complications related to this procedure.

PURPOSE

Considering the need to find a method that does not involve the patient's exposure to radiation, this study aimed to evaluate the diagnostic accuracy of ultrasonography for verifying gastric tube placement in newborns.

METHODS

This was a prospective, double-blind, observational study performed in a neonatal intensive care unit, in which 159 infants had gastric intubation using ultrasound examination and radiological imaging, to verify positioning. Results were analyzed in terms of diagnostic accuracy.

RESULTS

The tubes were correctly positioned in 157 cases (98.7%), according to radiological images, and in 156 cases (98.1%), according to ultrasound. The sensitivity analysis was 0.98 and the positive predictive value was 0.99. It was not possible to perform a specificity analysis, as there were not enough negative cases in the sample.

IMPLICATIONS FOR PRACTICE

The use of ultrasonography to identify correct positioning of gastric tubes in infants and newborns shows good sensitivity.

IMPLICATIONS FOR RESEARCH

It was not possible to evaluate the ultrasonography specificity; further studies with greater samples are probably necessary, so that this objective can be achieved.Video Abstract available at https://journals.lww.com/advancesinneonatalcare/Pages/videogallery.aspx?videoId=29&autoPlay=true.

Lose the Whoosh: An Evidence-Based Project to Improve NG Tube Placement Verification in Infants and Children in the Hospital Setting

PURPOSE

The purpose of this EBP project was to align NG and OG tube placement and verification practices with evidence-based recommendations for children.

PRACTICE CHANGE

An evidence-based NG/OG Tube Placement Algorithm was developed. The algorithm provided an individualized approach based on patient condition as well as a tiered approach that incorporated radiographs, tube measurement and marking, and pH testing.

METHODS

A systematic appraisal of literature identified 40 studies supporting the development of the practice change. A 9-item questionnaire was administered to nurses across five pediatric units to assess current tube verification practices. Education was provided in participating units through a Competency Fair. Post-implementation evaluation included re-administering the practice survey and conducting a chart audit of NG/OG events occurring in the year following the practice change.

RESULTS

Seventy-one nurses completed the pre-implementation survey; 64 nurses completed the post-implementation survey. Strategies for checking NG/OG placement varied across units prior to implementation; however, auscultation was the most likely to be used strategy and assessing pH was the least likely to be used strategy across units. Post-implementation, aspiration and checking pH were the most frequently endorsed assessment strategy, and auscultation was the least endorsed strategy. The post-implementation chart audit revealed that 73% of NG/OG tubes were checked for placement on insertion with radiograph or aspirate pH.

CONCLUSIONS

Implementation of an NG/OG Tube Placement Algorithm standardized NG/OG care across five pediatric units. Additional efforts are underway to further improve adherence to protocol in order to ensure safe, evidence-based practice for children with NG/OG tubes.