Table 3.

Perioperative hemodynamic data in 13 patients with postural orthostatic tachycardia syndrome undergoing general anesthesia

Patient and procedure (positioning)	Preoperative		Induction				Maintenance
	BP (mmHg)	HR (bpm)	MinHR (bpm)	BP(mmHg)	MaxHR (bpm)	BP(mmHg)	MinHR (bpm)	BP(mmHg)	MaxHR (bpm)	BP(mmHg)
Patient 1 Lipoma excision (supine)	150/80	110	100	145/70	105	145/95	100	145/70	105	145/95
Patient 2 Decompressive lumbar laminectomy (prone)	120/80	76	62	70/28	98	117/77	62	117/77	98	70/28
Patient 3 Right thoracic sympathectomy (left lateral)	120/80	88	75	100/50	105	110/60	75	100/50	105	110/60
Patient 4 Exploratory laparotomy (Trendelenburg)	110/75	73	67	94/50	108	127/72	85	121/70	90	121/74
Patient 5 Cystoscopy (lithotomy)	125/75	70	71	123/83	91	140/81	71	123/83	91	140/81
Patient 6 Hysteroscopy, D&C, cystoscopy, laparoscopy (lithotomy)	130/80	70	70	130/65	70	125/75	70	130/65	70	125/75
Patient 7 Resection cervical rib (supine)	120/80	70	70	115/70	80	115/70	70	115/70	80	115/70
Patient 8 Left thyroid lobectomy (reverse Trendelenburg)	106/60	45	48	102/60	52	102/75	48	102/60	52	102/75
Patient 9 ORIF frontal sinus fracture (supine)	110/55	61	57	106/42	66	89/36	57	106/42	66	89/36
Patient 10 Laparoscopy & hysteroscopy (Trendelenburg)	104/56	74	75	91/56	147	108/64	75	91/56	147	108/64
Patient 11 Atrial pacemaker lead extraction (supine)	110/68	64	85	121/70	90	121/74	67	94/50	108	127/72
Patient 12 Removal spinal cord stimulator and cable (right lateral)	143/71	59	54	156/58	62	156/58	54	156/58	62	156/58
Patient 13 Excision perimandibular lymph node (supine)	130/80	Unkown	83	101/58	90	113/60	83	101/58	90	113/60

Intraoperative hemodynamics given as minimum heart rate (HR) with corresponding blood pressure (BP) and maximum HR with corresponding BP.

D&C=dilatation and curettage, ORIF=open reduction internal fixation.