Correct usage
A simple mnemonic to facilitate use of the JADA VHCD is “120/80”—fill the vaginal balloon with 120 mL of sterile fluid and attach the tubing to a source that is set to provide 80 mm Hg of vacuum with an in-line collection cannister. The VHCD may not work correctly if there is a substantial amount of blood in the uterus. Clinical experts advise that an important step prior to placing the elliptical loop in the uterus is to perform a sweep of the uterine cavity with a hand or instrument to remove clots and ensure there is no retained placental tissue. It is preferable to assemble the suction tubing, syringe, sterile fluid, and other instruments (eg, forceps, speculum) needed to insert the device prior to attempting to place the VHCD. When the elliptical loop is compressed for insertion, it is about 2 cm in diameter, necessitating that the cervix be dilated sufficiently to accommodate the device.
Immediately after placing the VHCD, contractions can be monitored by physical examination and the amount of ongoing bleeding can be estimated by observing the amount of blood accumulating in the cannister. Rapid onset of a palpable increase in uterine tone is a prominent feature of successful treatment of PPH with the VHCD. The VHCD should be kept in the uterus with active suction for at least 1 hour. Taping the tubing to the inner thigh may help stabilize the device. Once bleeding is controlled, prior to removing the device, the vacuum should be discontinued, and bleeding activityshould be assessed for at least 30 minutes. If the patient is stable, the vaginal balloon can be deflated, followed by removal of the device. The VHCD should be removed within 24 hours of placement.6
The JADA VHCD system should not be used with ongoing intrauterine pregnancy, untreated uterine rupture, unresolved uterine inversion, current cervical cancer, or serious infection of the uterus.6 The VHCD has not been evaluated for effectiveness in the treatment of placenta accreta or coagulopathy. The VHCD has not been specifically evaluated for safety and effectiveness in patients < 34 weeks’ duration, but clinicians report successful use of the device in cases of PPH that have occurred in the second and early-third trimesters. If the device can be appropriately placed with the elliptical loop in the uterus and the balloon in the vagina, it is theoretically possible to use the device for cases of PPH occurring before 34 weeks’ gestation.
When using the JADA VHCD system, it is important to simultaneously provide cardiovascular support, appropriate transfusion of blood products and timely surgical intervention, if indicated. All obstetricians know that in complicated cases of PPH, where conservative measures have not worked, uterine artery embolization or hysterectomy may be the only interventions that will prevent serious patient morbidity.
Effectiveness data
The VHCD has not been evaluated against an alternative approach, such as UBT, in published randomized clinical trials. However, prospective cohort studies have reported that the JADA is often successful in the treatment of PPH.7-10
In a multicenter cohort study of 107 patients with PPH, including 91 vaginal and 16 cesarean births, 100 patients (93%) were successfully treated with the JADA VHCD.7 Median blood loss before application of the system was 870 mL with vaginal birth and 1,300 mL with cesarean birth. Definitive control of the hemorrhage was observed at a median of 3 minutes after initiation of the intrauterine vacuum. In this study, 32% of patients had reproductive tract lacerations that needed to be repaired, and 2 patients required a hysterectomy. Forty patients required a blood transfusion.
Two patients were treated with a Bakri UBT when the VHCD did not resolve the PPH. In this cohort, the vacuum was applied for a median duration of 144 minutes, and a median total device dwell time was 191 minutes. Compared with UBT, the JADA VHCD intrauterine dwell time was shorter, facilitating patient progression and early transfer to the postpartum unit. The physicians who participated in the study reported that the device was easy to use. The complications reported in this cohort were minor and included endometritis (5 cases), vaginal infection (2 cases), and disruption of a vaginal laceration repair (1 case).7
Novel approaches to generating an intrauterine vacuum to treat PPH
The JADA VHCD is the only vacuum device approved by the US Food and Drug Administration (FDA) for treatment of PPH. However, clinical innovators have reported alternative approaches to generating an intrauterine vacuum using equipment designed for other purposes. In one study, a Bakri balloon was used to generate intrauterine vacuum tamponade to treat PPH.11 In this study, a Bakri balloon was inserted into the uterus, and the balloon was inflated to 50 mL to 100 mL to seal the vacuum. The main Bakri port was attached to a suction aspiration device set to generate a vacuum of 450 mm Hg to 525 mm Hg, a much greater vacuum than used with the JADA VHCD. This study included 44 cases of PPH due to uterine atony and 22 cases due to placental pathology, with successful treatment of PPH in 86% and 73% of the cases, respectively.
Another approach to generate intrauterine vacuum tamponade involves using a Levin stomach tube (FG24 or FG36), which has an open end and 4 side ports near the open tip.12-14 The Levin stomach tube is low cost and has many favorable design features, including a rounded tip, wide-bore, and circumferentially placed side ports. The FG36 Levin stomach tube is 12 mm in diameter and has 10 mm side ports. A vacuum device set to deliver 100 mm Hg to 200 mm Hgwas used in some of the studies evaluating the Levin stomach tube for the treatment of PPH. In 3 cases of severe PPH unresponsive to standard interventions, creation of vacuum tamponade with flexible suction tubing with side ports was successful in controlling the hemorrhage.13
Dr. T.N. Vasudeva Panicker invented an intrauterine cannula 12 mm in diameter and 25 cm in length, with dozens of 4 mm side ports over the distal 12 cm of the cannula.15 The cannula, which is made of stainless steel or plastic, is inserted into the uterus and 700 mm Hgvacuum is applied, a level much greater than the 80 mm Hg vacuum recommended for use with the JADA VHCD. When successful, the high suction clears the uterus of blood and causes uterine contraction. In 4 cases of severe PPH, the device successfully controlled the hemorrhage. In 2 of the 4 cases the device that was initially placed became clogged with blood and needed to be replaced.
UBT vs VHCD
To date there are no published randomized controlled trials comparing Bakri UBT to the JADA VHCD. In one retrospective study, the frequency of massive transfusion of red blood cells (RBCs), defined as the transfusion of 4 units or greater of RBCs, was assessed among 78 patients treated with the Bakri UBT and 36 patients treated with the JADA VHCD.9 In this study, at baseline there was a non ̶ statistically significant trend for JADA VHCD to be used more frequently than the Bakri UBT in cases of PPH occurring during repeat cesarean delivery (33% vs 14%). The Bakri UBT was used more frequently than the JADA VHCD among patients having a PPH following a vaginal delivery (51% vs 31%). Both devices were used at similar rates for operative vaginal delivery (6%) and primary cesarean birth (31% VHCD and 28% UBT).
In this retrospective study, the percentage of patients treated with VHCD or UBT who received 4 or more units of RBCs was 3% and 21%, respectively (P < .01). Among patients treated with VHCD and UBT, the estimated median blood loss was 1,500 mL and 1,850 mL (P=.02), respectively. The median hemoglobin concentration at discharge was similar in the VHCD and UBT groups, 8.8 g/dL and 8.6 g/dL, respectively.9 A randomized controlled trial is necessary to refine our understanding of the comparative effectiveness of UBT and VHCD in controlling PPH following vaginal and cesarean birth.
A welcome addition to treatment options
Every obstetrician knows that, in the next 12 months of their practice, they will encounter multiple cases of PPH. One or two of these cases may require the physician to use every medication and procedure available for the treatment of PPH to save the life of the patient. To prepare to treat the next case of PPH rapidly and effectively, it is important for every obstetrician to develop a standardized cognitive plan for using all available treatmentmodalities in an appropriate and timely sequence, including both the Bakri balloon and the JADA VHCD. The insight that inducing an intrauterine vacuum causes uterine contraction, which may resolve PPH, is an important discovery. The JADA VHCD is a welcome addition to our armamentarium of treatments for PPH. ●