Article Figures & Data
Figures
- FIGURE 1.
Comparison of prior survey vs. current survey results: compliance with 14 individual protocol variables from prior study (2) and current evaluation. Highest-compliance variables in current study included instructions on taking nothing by mouth for 4 h before procedure at 97%, and variable with lowest compliance was provision of blood glucose instructions at 3%. Overall average of compliance across all variables increased from 43% in 2017 to 54% currently.
- FIGURE 2.
Number of variables compliant with guidelines per laboratory in current and previous 2016 studies. Smaller percentage of laboratories was compliant with all 14 variables. However, greater percentage of laboratories was compliant with more guideline variables.
Tables
Variable Category Frequency (n) % Laboratory type Hospital-based 82 69.5 Nonhospital 36 30.5 First time vs. reaccreditation application First time 3 2.5 Reaccredited 115 97.5 Mean Median Range Gastrointestinal study annual volume 426 306 6–1,736 General nuclear medicine annual volume 1,623 1,180 45–9,077 Number of medical staff 12 9.5 1–77 Number of technical staff 6.8 7 1–31 Number of γ-cameras 3.6 2 0–20 Category Variable Definition Patient preparation Medication withholding Prokinetic agents: metoclopramide, tegaserod (Zelnorm; Alfasigma USA, Inc.), domperidone, erythromycin, and cisapride; opiates; anticholinergic and antispasmodic agents; atropine, nifedipine, progesterone, octreotide, theophylline, benzodiazepine, and phentolamine Withholding time Two days Blood glucose Testing of blood glucose level before study to ensure level is <200 mg/dL Blood glucose recording Recording of blood glucose level and including it in final report Meal Consensus meal Proper preparation of meal with all 4 listed ingredients and no other ingredients (e.g., no butter or juice): 118 mL (4 oz) of liquid egg whites, 120 mL of water, 2 slices of toast, 30 g of jam or jelly Nothing by mouth No food or water by mouth for minimum of 4 h Meal ingestion time Consumption of meal as quickly as possible and in less than 10 min Partial meal Instructions in cases of vomiting or if patient ingests only a portion of meal Radiopharmaceutical dose 18.5–37 MBq (0.5–1.0 mCi) of 99mTc sulfur colloid Acquisition Image projections Acquisition of both anterior and posterior images Image frequency Acquisition of images immediately on meal completion and hourly until 4 h Processing Geometric mean Calculation of geometric mean using anterior and posterior projections (geometric mean = √ (anterior counts × posterior counts) Decay-corrected Decay correction of counts in region of interest Percentage retention Reporting of final measurements as percentage gastric retention at each time point Meal type Ingredients Full consensus Egg white, white toast, jelly, and water Partial Partial components of consensus meal Consensus plus Consensus meal with addition of nonstandard ingredients such as egg yolk (whole eggs) Oatmeal Oatmeal alone or with other ingredients Other Unusual meals such as burrito or peanut butter sandwich Meal type Frequency (n) % Full consensus 74 62.7% Partial 27 22.8% Consensus plus 6 5.1% Oatmeal 10 8.5% Other 3 2.5%
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