Low-pressure tamponade due to hemothorax after transcatheter edge-to-edge repair of the mitral valve

Table 1 Vital signs, vasoactive medications, fluid totals, and blood gas data prior to induction of general anesthesia, in the operating room, upon extubation, and in the post-procedure care unit

	Pre-induction	Operating room	Extubation	PCU 0-10 minutes	PCU 20 minutes	PCU post
Heart rate (beats/min)	67	62→70	64	90	95-100	90
Blood pressure (mmHg)	177/83	140-150/75-88	95/55	80/40	80/45	95/60
Norepinephrine (mcg/min)		2-4	0	0-8	8-10	2
Respiratory Rate (breaths/min)	15	12	18	28	30	25
SaO2 (%)	100	100	98	85	95	98
Respiratory mode	Spont	Vent	Vent→Spont	Spont	BiPAP	Vent
Hgb (gm/dL)	11			8.7		11
Fluids (mL)		500 mL LR		500 mL LR; 1050 mL PRBCs
pH					6.99	7.32
PaCO2 (mmHg)					98	37
PaO2 (mmHg)					> 400	252

Hgb: Hemoglobin; SaO₂: Arterial oxygen saturation; BiPAP: Bi-level positive airway pressure; PaCO₂: Partial pressure of carbon dioxide in arterial blood; PaO₂: Partial pressure of oxygen in arterial blood; PCU: Post-procedure care unit; PRBC: Packed red blood cells; LR: Lactated ringers.