1. Deglutition Syncope with Coexistent Carotid Sinus Hypersensitivity
Yaron Shapira, M.D., Boris Strasberg, M.D., Tuvia Ben-Gal, M.D. 
CHEST 
Volume 99, Issue 6, Pages (June 1991)
DOI: /chest
Copyright © 1991 The American College of Chest Physicians Terms and Conditions

2. Figure 1
Electrocardiogram during swallowing of carlonated beverage while the patient was still receiving atenolol and verapamil. Monitor lead shows paroxysmal A-V block with asystole of 7.1 s. Arrows at nonconducted P waves.
CHEST  , DOI: ( /chest )
Copyright © 1991 The American College of Chest Physicians Terms and Conditions

3. Figure 2
Time line (TL), leads 1, 2, 4, and V1, His bundle (HBE), and radial artery (RA) recording during swallowing. There is sinus slowing and 2:1 intranodal A-V block.
CHEST  , DOI: ( /chest )
Copyright © 1991 The American College of Chest Physicians Terms and Conditions

4. Figure 3
Time line (TL), leads 1, 2, 3, and V1, radial artery (RA), and atrial electrogram (AE) recording during right carotid massage. There is sudden sinus slowing, paroxysmal A-V block lasting 3.66 s, and significant decrease in blood pressure with slow recovery.
CHEST  , DOI: ( /chest )
Copyright © 1991 The American College of Chest Physicians Terms and Conditions