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Table 1 Trial inclusion and exclusion criteria

From: Recruiting and consenting into a peripartum trial in an emergency setting: a qualitative study of the experiences and views of women and healthcare professionals

Inclusion criteria
 Women with a retained placenta
 Women aged 16 or over
 Women having a vaginal delivery (including women with a previous caesarean section)
 Haemodynamic stability (systolic blood pressure more than 100 mmHg and pulse less than 110 beats per min)
 Over 14 weeks’ gestation
Exclusion criteria
 Unable to give informed consent
 Suspected placenta accreta/increta/percreta
 Multiple pregnancy
 Women undergoing an instrumental vaginal delivery in theatre
 Allergy or hypersensitivity to nitrates or any other constituent of the formulation
 Taken alcohol in the last 24 hours
 Concomitant use of phosphodiesterase inhibitors (such as sildenafil, tadalafil, or vardenafil)
 Contra-indication due to one of the following: severe anaemia, constrictive pericarditis, extreme bradycardia, incipient glaucoma, glucose-6-phosphate dehydrogenase deficiency, cerebral haemorrhage and brain trauma, aortic and/or mitral stenosis and angina caused by hypertrophic obstructive cardiomyopathy, circulatory collapse, cardiogenic shock and toxic pulmonary oedema
 Currently participating in another CTIMP