-
Journal of Veterinary Internal Medicine 2024Salbutamol and hyoscine butylbromide (HBB) are commonly used bronchodilators in horses with severe asthma (SA). (Comparative Study)
Comparative Study
BACKGROUND
Salbutamol and hyoscine butylbromide (HBB) are commonly used bronchodilators in horses with severe asthma (SA).
OBJECTIVE
To compare the bronchodilation potency, duration, and adverse effects of salbutamol and HBB in SA.
ANIMALS
Six horses in exacerbation of SA.
METHODS
The effects of inhaled salbutamol (1000 μg) and HBB (150 mg, IV) were compared in a randomized, blinded, crossover experiment. Lung function, intestinal borborygmi and heart rate were assessed before and sequentially until 180 minutes after drug administration, and analyzed with 2-way repeated-measures ANOVA and Dunnett's multiple comparison tests.
RESULTS
Both treatments caused a similar improvement in lung function. Pulmonary resistance and reactance returned to baseline values within 30 minutes after HBB administration, whereas salbutamol improved reactance until 180 minutes (mean improvement at 180 minutes of 0.040 Kpa/L/s, 95% CI = 0.004 to 0.076; P = .02 for salbutamol and of 0.009 Kpa/L/s, 95% CI = -0.028 to 0.045; P = .98 for HBB for the resistance at 3 Hz and of 0.040 Kpa/L/s, 95% CI = 0.007 to 0.074; P = .01 for salbutamol and of 0.009 Kpa/L/s, 95% CI = -0.024 to 0.042; P = .97 for HBB for the reactance at 7 Hz). From 5 to 30 minutes after HBB administration, the heart rate accelerated (mean increase of 3.3 beats per minute, 95% CI = -6.6 to 13.1; P = .92 for salbutamol, and of 13.0 beats per minute, 95% CI = 3.6 to 22.4; P = .002 for HBB at 30 minutes) and the gut sounds decreased (mean reduction of 1.3, 95% CI = -0.1 to 2.8; P = .09 for salbutamol and of 2.8 for the gastrointestinal auscultation score, 95% CI = 1.4 to 4.3; P < .0001 for HBB at 30 minutes).
CONCLUSIONS AND CLINICAL IMPORTANCE
Both drugs have a similar bronchodilator potency but with a longer duration for salbutamol. Gastrointestinal and cardiovascular effects were noted only with HBB, suggesting the preferential use of salbutamol to relieve bronchoconstriction in horses with asthma.
Topics: Animals; Horses; Albuterol; Asthma; Horse Diseases; Bronchodilator Agents; Cross-Over Studies; Butylscopolammonium Bromide; Male; Female; Heart Rate; Administration, Inhalation
PubMed: 38609079
DOI: 10.1111/jvim.17057 -
PLoS Medicine Mar 2024Prolonged labor is a common condition associated with maternal and perinatal complications. The standard treatment with oxytocin for augmentation of labor increases the... (Randomized Controlled Trial)
Randomized Controlled Trial
BACKGROUND
Prolonged labor is a common condition associated with maternal and perinatal complications. The standard treatment with oxytocin for augmentation of labor increases the risk of adverse outcomes. Hyoscine butylbromide is a spasmolytic drug with few side effects shown to shorten labor when used in a general population of laboring women. However, research on its effect on preventing prolonged labor is lacking. We aimed to assess the effect of hyoscine butylbromide on the duration of labor in nulliparous women showing early signs of slow labor.
METHODS AND FINDINGS
In this double-blind randomized placebo-controlled trial, we included 249 nulliparous women at term with 1 fetus in cephalic presentation and spontaneous start of labor, showing early signs of prolonged labor by crossing the alert line of the World Health Organization (WHO) partograph. The trial was conducted at Oslo University Hospital in Norway from May 2019 to December 2021. One hundred and twenty-five participants were randomized to receive 1 ml hyoscine butylbromide (Buscopan) (20 mg/ml), while 124 received 1 ml sodium chloride intravenously. Randomization was computer-generated, with allocation concealment by opaque sequentially numbered sealed envelopes. The primary outcome was duration of labor from administration of the investigational medicinal product (IMP) to vaginal delivery, which was analyzed by Weibull regression to estimate the cause-specific hazard ratio (HR) of vaginal delivery between the 2 treatment groups, with associated 95% confidence interval (CI). A wide range of secondary maternal and perinatal outcomes were also evaluated. Time-to-event outcomes were analyzed by Weibull regression, whereas continuous and dichotomous outcomes were analyzed by median regression and logistic regression, respectively. All main analyses were based on the modified intention-to-treat (ITT) set of eligible women with signed informed consent receiving either of the 2 treatments. The follow-up period lasted during the postpartum hospital stay. All personnel, participants, and researchers were blinded to the treatment allocation. Median (mean) labor duration from IMP administration to vaginal delivery was 401 (440.8) min in the hyoscine butylbromide group versus 432.5 (453.6) min in the placebo group. We found no statistically significant association between IMP and duration of labor from IMP administration to vaginal delivery: cause-specific HR of 1.00 (95% CI [0.77, 1.29]; p = 0.993). Among 255 randomized women having received 1 dose of IMP, 169 women (66.3%) reported a mild adverse event: 75.2% in the hyoscine butylbromide group and 57.1% in the placebo group (Pearson's chi-square test: p = 0.002). More than half of eligible women were not included in the study because they did not wish to participate or were not included upon admission. The participants might have represented a selected group of women reducing the external validity of the study.
CONCLUSIONS
One intravenous dose of 20 mg hyoscine butylbromide was not found to be superior to placebo in preventing slow labor progress in a population of first-time mothers at risk of prolonged labor. Further research is warranted to answer whether increased and/or repeated doses of hyoscine butylbromide might have an effect on duration of labor.
TRIAL REGISTRATION
ClinicalTrials.gov (NCT03961165) EudraCT (2018-002338-19).
Topics: Female; Humans; Pregnancy; Butylscopolammonium Bromide; Double-Blind Method; Hydrocarbons, Brominated; Labor, Obstetric; Parasympatholytics; Scopolamine
PubMed: 38547322
DOI: 10.1371/journal.pmed.1004352 -
Journal of Veterinary Internal Medicine 2024Echocardiographic measurements are important prognostic indicators but might be influenced by heart rate and blood pressure. This is particularly important when...
BACKGROUND
Echocardiographic measurements are important prognostic indicators but might be influenced by heart rate and blood pressure. This is particularly important when comparing repeated examinations.
HYPOTHESIS
To determine the effect of physiological stress at mildly increased heart rates and pharmacological challenge using IV administration of N-butylscopolammonium bromide and metamizol sodium on heart rate, blood pressure, and echocardiographic measurements.
ANIMALS
Twenty healthy Warmblood horses.
METHODS
Randomized crossover study. Horses were examined echocardiographically by 2-dimensional, M-mode, pulsed wave (PW) Doppler, and PW tissue Doppler imaging with simultaneous ECG recording and noninvasive blood pressure measurements during rest, physiological stress, and pharmacological challenge. Cardiac dimensions and functions were measured by a blinded observer. Data were analyzed using repeated-measures analysis of variance.
RESULTS
Mean heart rate and arterial blood pressure were significantly higher during physiological stress (46 ± 2 bpm, 93 ± 16 mm Hg) and pharmacological challenge (62 ± 13 bpm, 107 ± 17 mm Hg) compared with rest (34 ± 3 bpm, 86 ± 12 mm Hg; P < .05). Compared with rest, physiological stress resulted in increased left atrial fractional area change (34.3 ± 7.5 vs 27.3 ± 5.1%; P = .01) and left ventricular late diastolic radial wall motion velocity (13 ± 3 vs 10 ± 2 cm/s; P = .01) but had no significant effect on most other echocardiographic variables. Compared with rest, pharmacological challenge led to significantly decreased left atrial and diastolic ventricular dimensions (left ventricular internal diameter: 10.3 ± 0.9 vs 10.7 ± 0.8 cm; P = .01), increased aortic and pulmonary diameters, and ventricular wall thickness.
CONCLUSIONS AND CLINICAL IMPORTANCE
Physiological stress at mildly increased heart rates significantly enhanced atrial pump function. Larger heart rate and blood pressure increases during pharmacological challenge resulted in altered cardiac dimensions. This should be taken into account when evaluating echocardiographic measurements at increased heart rates.
Topics: Horses; Animals; Heart Rate; Blood Pressure; Cross-Over Studies; Echocardiography; Heart Ventricles; Tachycardia; Horse Diseases
PubMed: 38174810
DOI: 10.1111/jvim.16967 -
BMC Emergency Medicine Sep 2023BACKGROUND: Treatment of acute pain is an essential element of pre-hospital care for injured and critically ill patients. Clinical studies indicate the need for...
ABSTRAC
BACKGROUND: Treatment of acute pain is an essential element of pre-hospital care for injured and critically ill patients. Clinical studies indicate the need for improvement in the prehospital analgesia.
OBJECTIVE
The aim of this study is to assess the current situation in out of hospital pain management in Germany regarding the substances, indications, dosage and the delegation of the use of analgesics to emergency medical service (EMS) staff.
MATERIAL AND METHODS
A standardized survey of the medical directors of the emergency services (MDES) in Germany was carried out using an online questionnaire. The anonymous results were evaluated using the statistical software SPSS (Chi-squared test, Mann-Whitney-U test).
RESULTS
Seventy-seven MDES responsible for 989 rescue stations and 397 EMS- physician bases in 15 federal states took part in this survey. Morphine (98.7%), Fentanyl (85.7%), Piritramide (61%), Sufentanil (18.2%) and Nalbuphine (14,3%) are provided as opioid analgesics. The non-opioid analgesics (NOA) including Ketamine/Esketamine (98,7%), Metamizole (88.3%), Paracetamol (66,2%), Ibuprofen (24,7%) and COX-2-inhibitors (7,8%) are most commonly available. The antispasmodic Butylscopolamine is available (81,8%) to most rescue stations. Fentanyl is the most commonly provided opioid analgesic for treatment of a traumatic pain (70.1%) and back pain (46.8%), Morphine for visceral colic-like (33.8%) and non-colic pain (53.2%). In cases of acute coronary syndrome is Morphine (85.7%) the leading analgesic substance. Among the non-opioid analgesics is Ketamine/Esketamine (90.9%) most frequently provided to treat traumatic pain, Metamizole for visceral colic-like (70.1%) and non-colic (68.6%) as well as back pain (41.6%). Butylscopolamine is the second most frequently provided medication after Metamizole for "visceral colic-like pain" (55.8%). EMS staff (with or without a request for presence of the EMS physician on site) are permitted to use the following: Morphine (16.9%), Piritramide (13.0%) and Nalbuphine (10.4%), and of NOAs for (Es)Ketamine (74.1%), Paracetamol (53.3%) and Metamizole (35.1%). The dosages of the most important and commonly provided analgesic substances permitted to independent treatment by the paramedics are often below the recommended range for adults (RDE). The majority of medical directors (78.4%) of the emergency services consider the independent application of analgesics by paramedics sensible. The reason for the relatively rare authorization of opioids for use by paramedics is mainly due to legal (in)certainty (53.2%).
CONCLUSION
Effective analgesics are available for EMS staff in Germany, the approach to improvement lies in the area of application. For this purpose, the adaptations of the legal framework as well as the creation of a guideline for prehospital analgesia are useful.
Topics: Adult; Humans; Ketamine; Analgesics, Non-Narcotic; Dipyrone; Acetaminophen; Nalbuphine; Pirinitramide; Butylscopolammonium Bromide; Physician Executives; Analgesics; Analgesics, Opioid; Fentanyl; Germany; Acute Pain; Morphine Derivatives
PubMed: 37710177
DOI: 10.1186/s12873-023-00878-8 -
PloS One 2022First-time mothers are prone to prolonged labor, defined as the crossing of partograph alert or action lines. Prolonged labor may occur among as many as one out of five...
Study protocol for the BUSCopan in LABor (BUSCLAB) study: A randomized placebo-controlled trial investigating the effect of butylscopolamine bromide to prevent prolonged labor.
BACKGROUND
First-time mothers are prone to prolonged labor, defined as the crossing of partograph alert or action lines. Prolonged labor may occur among as many as one out of five women, and is associated with a range of adverse birth outcomes. Oxytocin is the standard treatment for prolonged labor, but has a narrow therapeutic window, several adverse effects and limited efficacy. Despite poor evidence, labor wards often use antispasmodic agents to treat prolonged labor. The antispasmodic drug butylscopolamine bromide (Buscopan®) may shorten duration of labor, but studies on prevention of prolonged labor are lacking. In this randomized double-blind placebo-controlled clinical trial, we aim to evaluate the effect of butylscopolamine bromide on duration of labor in first-time mothers showing first signs of slow labor progress by crossing the World Health Organization partograph alert line.
METHODS AND ANALYSIS
The study is a single center study at Oslo University Hospital, Oslo, Norway. We will recruit 250 primiparous women with spontaneous labor start at term. Women are included in the first stage of labor if they show signs of slow labor progress, defined as the crossing of the partograph alert line with a cervical dilation between 3-9 cm. Participants are randomized 1:1 to either 20 mg intravenous butylscopolamine bromide or intravenous placebo (1 mL sodium chlorine 9 mg/mL). We considered a mean difference of 60 minutes in labor duration clinically relevant. The primary outcome is duration of labor from the provision of the investigational medicinal product to vaginal delivery. The secondary outcomes include change in labor pain, use of oxytocin augmentation, delivery mode, and maternal birth experience. The primary data for the statistical analysis will be the full analysis set and will occur on completion of the study as per the prespecified statistical analysis plan. The primary outcome will be analyzed using Weibull regression, and we will treat cesarean delivery as a censoring event.
Topics: Pregnancy; Female; Humans; Butylscopolammonium Bromide; Oxytocin; Bromides; Labor, Obstetric; Delivery, Obstetric; Randomized Controlled Trials as Topic
PubMed: 36327275
DOI: 10.1371/journal.pone.0276613 -
Scientific Reports Jun 2022Hyoscine-N-butylbromide (HBB) is the most used antiperistaltic agent during esophagogastroduodenoscopy (EGD). However, almost half of the elderly have a contraindication... (Randomized Controlled Trial)
Randomized Controlled Trial
Hyoscine-N-butylbromide (HBB) is the most used antiperistaltic agent during esophagogastroduodenoscopy (EGD). However, almost half of the elderly have a contraindication to HBB. We aimed to evaluate L-menthol's antiperistaltic effect and safety for EGD in the elderly with contraindication to HBB. This prospective, randomized, double-blind, placebo-controlled study screened 86 elderly patients (≥ 65 years old) scheduled to undergo EGD, and 52 of them with contraindication to HBB were enrolled. The participants were randomized to receive L-menthol (n = 26) or a placebo (n = 26), which was locally sprayed on the gastric antrum endoscopically. The proportion of patients with no or mild peristalsis after medication and at the end of EGD was significantly higher in the L-menthol group (76.9%) than in the placebo group (11.5%, p < 0.001). L-Menthol administration significantly reduced peristaltic grade, improved contraction parameters, and eased intragastric examination relative to the placebo (p < 0.001, respectively). Hemodynamic changes, adverse events, and discomfort levels of patients were similar between the two groups. L-Menthol is an effective and safe alternative antiperistaltic medication for EGD in elderly patients with contraindication to HBB. Further large, randomized trials are required to clarify whether L-menthol can lead to better detection yield in the elderly.Clinical trial registration: The study was registered at ClinicalTrials.gov (NCT04593836).
Topics: Aged; Antidiarrheals; Butylscopolammonium Bromide; Contraindications; Double-Blind Method; Endoscopy, Digestive System; Humans; Hydrocarbons, Brominated; Menthol; Prospective Studies; Scopolamine
PubMed: 35729250
DOI: 10.1038/s41598-022-14693-x -
Journal of Pain and Symptom Management May 2022A need exists for studies investigating symptom relief at the end of life. Randomised controlled trials (RCTs) are the gold standard for demonstrating efficacy of... (Review)
Review
A need exists for studies investigating symptom relief at the end of life. Randomised controlled trials (RCTs) are the gold standard for demonstrating efficacy of medication, but they are difficult to perform at the end of life due to barriers such as the vulnerability of patients, and gatekeeping by healthcare professionals. We analyzed and reflected on recruitment, participation, and strategies used in an RCT at the end of life. The SILENCE study, performed in six inpatient hospice facilities, was a placebo-controlled trial to study the effect of ScopolamIne butyLbromidE giveN prophylactiCally for dEath rattle in dying patients. We addressed patients' vulnerability by using an advance consent procedure, and potential gatekeeping by extensive training of health care professionals and the appointment of hospice doctors as daily responsible researchers. In almost three years, 1097 patients were admitted of whom 626 were eligible at first assessment. Of these, 119 (19%) dropped out because of physical deterioration before they could be informed about the study (44) or sign informed consent (75). Twenty-five (4%) patients were not asked to participate. In 24 cases (4%), relatives advised against the patient participating. Overall, 229 patients (37%) gave informed consent to participate. The vulnerability of patients was the most important barrier in this medication study at the end of life. Gatekeeping by HCPs and relatives occurred in a small number of patients. The robust design and applied strategies to facilitate patient recruitment in this study resulted in a successful study with sufficient participants.
Topics: Butylscopolammonium Bromide; Death; Hospice Care; Hospitalization; Humans; Informed Consent; Multicenter Studies as Topic; Randomized Controlled Trials as Topic
PubMed: 34954069
DOI: 10.1016/j.jpainsymman.2021.12.018 -
JAMA Oct 2021Death rattle, defined as noisy breathing caused by the presence of mucus in the respiratory tract, is relatively common among dying patients. Although clinical... (Randomized Controlled Trial)
Randomized Controlled Trial
IMPORTANCE
Death rattle, defined as noisy breathing caused by the presence of mucus in the respiratory tract, is relatively common among dying patients. Although clinical guidelines recommend anticholinergic drugs to reduce the death rattle after nonpharmacological measures fail, evidence regarding their efficacy is lacking. Given that anticholinergics only decrease mucus production, it is unknown whether prophylactic application may be more appropriate.
OBJECTIVE
To determine whether administration of prophylactic scopolamine butylbromide reduces the death rattle.
DESIGN, SETTING, AND PARTICIPANTS
A multicenter, randomized, double-blind, placebo-controlled trial was performed in 6 hospices in the Netherlands. Patients with a life expectancy of 3 or more days who were admitted to the participating hospices were asked to give advance informed consent from April 10, 2017, through December 31, 2019. When the dying phase was recognized, patients fulfilling the eligibility criteria were randomized. Of the 229 patients who provided advance informed consent, 162 were ultimately randomized. The date of final follow-up was January 31, 2020.
INTERVENTIONS
Administration of subcutaneous scopolamine butylbromide, 20 mg four times a day (n = 79), or placebo (n = 78).
MAIN OUTCOMES AND MEASURES
The primary outcome was the occurrence of a grade 2 or higher death rattle as defined by Back (range, 0-3; 0, no rattle; 3, rattle audible standing in the door opening) measured at 2 consecutive time points with a 4-hour interval. Secondary outcomes included the time between recognizing the dying phase and the onset of a death rattle and anticholinergic adverse events.
RESULTS
Among 162 patients who were randomized, 157 patients (97%; median age, 76 years [IQR, 66-84 years]; 56% women) were included in the primary analyses. A death rattle occurred in 10 patients (13%) in the scopolamine group compared with 21 patients (27%) in the placebo group (difference, 14%; 95% CI, 2%-27%, P = .02). Regarding secondary outcomes, an analysis of the time to death rattle yielded a subdistribution hazard ratio (HR) of 0.44 (95% CI, 0.20-0.92; P = .03; cumulative incidence at 48 hours: 8% in the scopolamine group vs 17% in the placebo group). In the scopolamine vs placebo groups, restlessness occurred in 22 of 79 patients (28%) vs 18 of 78 (23%), dry mouth in 8 of 79 (10%) vs 12 of 78 (15%), and urinary retention in 6 of 26 (23%) vs 3 of 18 (17%), respectively.
CONCLUSIONS AND RELEVANCE
Among patients near the end of life, prophylactic subcutaneous scopolamine butylbromide, compared with placebo, significantly reduced the occurrence of the death rattle.
TRIAL REGISTRATION
trialregister.nl Identifier: NTR6264.
Topics: Aged; Aged, 80 and over; Butylscopolammonium Bromide; Cholinergic Antagonists; Confidence Intervals; Death; Double-Blind Method; Drug Administration Schedule; Female; Hospice Care; Humans; Incidence; Informed Consent; Injections, Subcutaneous; Life Expectancy; Male; Middle Aged; Netherlands; Placebos; Proportional Hazards Models; Respiratory Sounds; Treatment Outcome
PubMed: 34609452
DOI: 10.1001/jama.2021.14785 -
Indian Journal of Pharmacology 2021Preliminary data indicates there is a cholinergic basis to insulin secretion. (Observational Study)
Observational Study
BACKGROUND
Preliminary data indicates there is a cholinergic basis to insulin secretion.
AIMS & OBJECTIVE
To investigate the impact of oral anticholinergics on insulin secretion in subjects with impaired glucose tolerance (IGT), in comparison with volunteers having normal glucose tolerance (NGT). Material & Methods: This prospective observational study recruited 10 IGT and 10 NGT subjects. An oral glucose tolerance test (OGTT) was conducted twice in the absence and presence of hyoscine butyl-bromide (HBB). The plasma glucose (PG) and insulin levels were serially estimated at 30-min increments for 2 h after the OGTT. Early (ΔI30/ΔPG30) & late (insulin/PGAUC 60-120) phase insulin activity were assessed subsequently.
RESULTS
The study constituted of 10 IGT (4M/6F, BMI: 28.80 ± 2.30) and 10 NGT (5M/5F, BMI: 23.00 ± 0.80) subjects. In the NGT group, the pre-HBB mean glucose levels (0-120 min) were comparable with those recorded after HBB intake. However, after HBBB, the mean insulin levels decreased significantly at t = 90 and 120min, confirmed by attenuated late phase insulin activity in IGT (P = 0.023) & NGT (P = 0.006) group. On the other hand, in the IGT group, however, HBB did not impact on the mean PG and insulin levels (0-120 min).
CONCLUSIONS
Our study findings indicate that insulin secretion is influenced by cholinergic system and that oral anticholinergics may attenuate the late phase insulin activity in varying degrees of glycemic status.
Topics: Administration, Oral; Adult; Aged; Blood Glucose; Butylscopolammonium Bromide; Cholinergic Antagonists; Female; Glucose; Glucose Intolerance; Humans; Insulin Secretion; Insulin-Secreting Cells; Male; Middle Aged; Prospective Studies
PubMed: 34414907
DOI: 10.4103/ijp.IJP_792_19 -
Journal of Nuclear Medicine : Official... May 2022This article reports the preliminary results of a phase II clinical trial investigating the use of the estrogen receptor (ER)-targeting PET tracer...
This article reports the preliminary results of a phase II clinical trial investigating the use of the estrogen receptor (ER)-targeting PET tracer 4-fluoro-11β-methoxy-16α-F-fluoroestradiol (F-4FMFES) and F-FDG PET in endometrial cancers. In parallel, noninvasive interventions were attempted to slow progression of F-4FMFES metabolites in the intestines to reduce abdominal background uptake. In an ongoing study, 25 patients who received prior pathologic confirmation of an ER-positive endometrial cancer or endometrial intraepithelial neoplasia agreed to participate in the ongoing clinical trial. Patients were scheduled for F-FDG and F-4FMFES PET/CT imaging in random order and within 2 wk. Patients were administered either 4 mg of loperamide orally before F-4FMFES tracer injection or repeated intravenous injection of 20 mg of hyoscine -butylbromide during F-4FMFES PET/CT. Regions of interest covering the whole abdomen and excluding the liver, bladder, and uterus were drawn for the F-4FMFES PET images, and an SUV threshold of more than 4 was applied. The volume of the resulting region was compared between the different interventions to estimate the extent of the intestinal background uptake. Repeated injection of hyoscine -butylbromide substantially reduced the intestinal background volume, whereas loperamide had a significant but moderate effect. F-4FMFES tumor SUV ranged from 3.0 to 14.4 (9.4 ± 3.2), whereas F-FDG SUV ranged from 0 to 22.0 (7.5 ± 5.1). Tumor-to-background ratio was significantly higher for F-4FMFES (16.4 ± 5.4) than for F-FDG (7.4 ± 4.6). Significant differences were observed between grade 1 and higher-grade tumors concerning F-4FMFES uptake and contrast, F-FDG uptake, and the F-FDG/F-4FMFES uptake ratio. It is possible to improve F-4FMFES abdominal background using hyoscine -butylbromide. Both F-FDG and F-4FMFES PET are suitable for detection of ER-positive endometrial cancers, although F-4FMFES yielded a better tumor contrast than did F-FDG.
Topics: Butylscopolammonium Bromide; Endometrial Neoplasms; Estradiol; Female; Fluorodeoxyglucose F18; Humans; Loperamide; Positron Emission Tomography Computed Tomography; Receptors, Estrogen
PubMed: 34413142
DOI: 10.2967/jnumed.121.262617