Table 2.

Prearrest electrocardiographic characteristics and contributors

Case	Rhythm	Rate (beats/min)		Intervals (ms)	ST/T-wave changes	Pressors	Antiarrhythmics	QT-prolonging drugs
1	Sinus tachycardia	130	PR – 148 QRSd – 102 QT – 304 QTc – 447		Peaked T waves	None	Metoprolol	Chlordiazepoxide Hydromorphone
2	Sinus rhythm	66	PR – 142 QRSd – 92 QT – 420 QTc – 440		Nonspecific	None	None	Hydroxychloroquine Azithromycin Hydromorphone
3	Sinus rhythm	99	PR – 138 QRSd – 78 QT – 344 QTc – 441		None	Norepinephrine Vasopressin	None	Hydroxychloroquine Chlordiazepoxide Hydromorphone
4	Sinus tachycardia	107	PR – 154 QRSd – 90 QT – 338 QTc – 451		None	Epinephrine Norepinephrine Vasopressin	Amiodarone	Hydroxychloroquine Azithromycin
5	Sinus rhythm	90	PR – 122 QRSd – 82 QT – 394 QTc – 481		Lateral ST depressions	None	None	None