title: Head-Up Tilt Test (HUTT) in Patients with Episodic Bradycardia and Hypotension Following Percutaneous Coronary Interventions.
abstract: We investigated the possible association of post catheterization hypotension/bradycardia and neurocardiogenic syncope. Head up tilt test (HUTT) was performed in 12 consecutive patients (age 32Ð65 years) who developed transient hypotension (systolic blood pressure < 80 mmHg) and/or bradycardia (heart rate < 50/min) with or without syncope following a percutaneous coronary intervention. Ten patients had undergone percutaneous transluminal coronary angioplasty (PTCA) with stent implantation and one each PTCA alone and diagnostic coronary angiography. This event occurred at the time of sheath removal in 7 patients (58%). HUTT was performed with and without intravenous edrophonium (10 mg intravenous). The tilt test was negative in all patients. Post-catheterization hypotension/bradycardia responds promptly to conservative measures and it is unclear whether this is related to neurocardiogenic syncope.
authors.affiliation: Department of Cardiology, Cardiothoracic Sciences Center, All India Institute of Medical Sciences, New Delhi, India.
authors.initials: R
authors.lastname: Agarwal
authors.initials: RD
authors.lastname: Yadave
authors.initials: B
authors.lastname: Bhargava
authors.initials: R
authors.lastname: Narang
authors.initials: U
authors.lastname: Kaul
authors.initials: SC
authors.lastname: Manchanda