Resistant Priapism in Hemodialysis Patient: A Rare Case.
Priapism is a penis erection that lasts longer than 4 h without sexual stimulation and is a urological emergency that requires immediate intervention. The incidence of priapism is 15 per 100,000 males per year, and this pathological condition can occur at any age (1).
There are many risk factors in the etiology of priapism: alcohol and drug abuse, hematologic dyscrasias (thalassemia, thrombophilia, and sickle cell anemia), thrombotic disease (asplenia and erythropoietin use), trauma, hematologic malignancies, metastatic malignancies, intracavernous injections for erectile dysfunction, spinal cord injury, and use of certain oral antipsychotics and phosphodiesterase type 5 inhibitors (2).
Herein, we present a case of a 47-year-old man with persistent priapism who underwent hemodialysis.
A 47-year-old man was admitted to the emergency department due to priapism with a painful erection starting at approximately 5 h after hemodialysis treatment and persisting for approximately 30 h. The patient had undergone hemodialysis for 2 months due to end-stage renal disease. There was no history of trauma, sickle cell anemia, illegal drug use, nitrate use, sexual intercourse, any psychostimulant use, and vasoactive agent or phosphodiesterase inhibitor use. The penis was painful and rigid. Laboratory examination revealed blood urea nitrogen (BUN) BUN: 89 mg/dL, Cr: 6.23 mg/dL, and Hb: 10.8 g/dL, and blood gas analysis of blood from the corpus cavernosum revealed pH: 7.3, pC[O.sub.2]: 49.1 mmHg, and p[O.sub.2]: 51 mmHg. The patient was diagnosed with ischemic priapism. The patient had subsequently undergone a failed conservative management, which involved multiple corporal aspiration with a 16-G butterfly needle. Intracavernous injection of sympathomimetic phenylephrine up to 1,000 mg in aliquots of 200-250 mg was administered to the patient under local anesthesia (penile block). Despite the removal of approximately 150 cc venous blood within 30 min, no detumescence was achieved (Figure 1a). We decided to perform a T-shunt combined with corporal tunneling. A small incision was made in the glans penis, and an Surgical Scalpel Blade No.11P. Swann-Morton Ltd 11 blade was passed from the spongy glandular tissue into the corpora. We passed sequential Hegar dilators bilaterally across the entire corporal body (Figures 1b and 1c). During the procedure, a urethral catheter was placed to avoid urethral injury. The penis was manually manipulated (milking maneuver), and blood in the corpus cavernosa was drained (Figures 1d and 1e). Afterwards, the incision lines in the glans penis were closed with a 3.0 polyglactin 910 suture (Figure 1f ). The penis was wrapped with a bandage (Figure 1g). In the follow-up visits, it was found that the patient was unable to achieve penile detumescence (Figures 1h and 1i). We planned to perform early implantation of a penile prosthesis due to necrosis, fibrosis, and permanent loss of erection. The patient was informed about his results, and written consent for publishing this case report was obtained.
Priapism is divided into three main types: ischemic, non-ischemic, and stuttering (3). Ischemic priapism accounts for 95% of all cases; it is the most common type and is an urological emergency (2). Ischemic priapism is a persistent erection in which there is little or no arterial inflow to the corpus cavernosum. Progressive hypoxia, hypercarbia, and acidosis was observed together with time-dependent changes in the corporal metabolic environment. Immediate intervention is required for penile compartment syndrome. Therefore, if timely intervention is not provided, permanent tissue damage can occur (4). Herein, the patient was diagnosed with ischemic persistent priapism with hypoxia, hypercarbia, and acidosis in the blood gas from the corpus cavernosum.
Previous studies have reported priapism during or after hemodialysis caused by several etiological factors: (a) inadequate heparinization, (b) sickle cell disease (2), (c) the process of dysregulation at the penile tissue level, and (d) dialysis-induced acidosis and hypoxemia (5-7). Conversely, heparin-induced priapism is a special type of pharmacologically induced prolonged erection, but its pathophysiological principles remain unclear. Heparin-induced platelet antibodies can lead to the accumulation of platelets, thereby obstructing the flow of penile blood, resulting in low-flow priapism. Alternatively, this can be explained by the initial high-flow priapism, which later transforms into ischemic priapism. The question is whether hemorrhage with subsequent organisation of the hematoma and late fibrosis constitutes a pathogenetic factor. It remains unclear whether hematoma and late fibrosis are regulated by hemorrhage or whether it is a pathogenetic factor for bleeding (8). The dialysis program for our patient was occasionally performed without the use of heparin; thus, we thought that priapism occurred due to insufficient heparinization and dialysis-induced acidosis and hypoxemia.
Given the severity of this consequence, early recognition of the situation and prompt management are important. Ischemic priapism is typically managed with first-line treatments, including blood aspiration and intracavernosal sympathomimetic drug injections, by intracavernous injection of an alpha-adrenergic agent, such as diluted phenylephrine, in the first 24 h (9). Patients can be saved from an invasive intervention particularly if they respond to the administration of symptomatic medications (such as terbutaline, salbutamol, and pseudoephedrine) during the first intervention in the emergency room (10).
Surgical intervention is usually necessary for patients who fail conservative treatment after 24 hours. Typically, a distal shunt between the corpus cavernosum and the glans penis is created using a percutaneous procedure (Ebbehoj or Winter, T-shunt) or an open (Al-Ghorab) procedure in second-line treatment (9). A T-shunt combined with corporal tunneling is currently the most popular surgery (3). In our case, we performed a T-shunt procedure with corporal tunneling.
Immediate implantation of a penile prosthesis is recommended for patients who present 48-72 h after the onset of a priapism episode (2). Early implantation 2 weeks after ischemic priapism causes early postoperative complications such as erosion or infection; delaying implantation for 2 months or more can cause patients to generally encounter more satisfaction and less penile shortening (11). In our case, the treatment protocols were progressively performed, but the patient could not achieve detumescence. Therefore, we suggested implantation of a penile prosthesis.
Priapism is a urological emergency and can be observed in rare cases after hemodialysis. The mechanism of priapism in our hemodialysis patient is suggested to be inadequate heparinization and dialysis-induced hypoxemia and acidosis. Priapism causes erectile dysfunction if not treated early. First-line treatment for priapism in the emergency department is very important. However, there is a need for more advanced studies due to lack of sufficient cases.
Informed Consent: Written informed consent was obtained from patients who participated in this study.
Peer-review: Externally peer-reviewed.
Author Contributions: Concept - M.G.Y., Y.A.; Design - Y.A., K.G.S.; Supervision - A.S.,V.T.; Resources - M.G.Y., Y.A., K.G.S.; Materials - Y.A., K.G.S.; Data Collection and/or Processing - A.S., Y.A.; Analysis and/or Interpretation - M.G.Y., V.T.; Literature Search - Y.A., K.G.S.; Writing Manuscript - Y.A., K.G.S., M.G.Y.; Critical Review - A.S., V.T.
Conflict of Interest: The authors have no conflict of interest to declare.
Financial Disclosure: The authors declared that this study has received no financial support.
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Mustafa Gurkan Yenice, Yusuf Arikan, Kamil Gokhan Seker, Abdulmuttalip Simsek, Volkan Tugcu
Department of Urology, Bakirkoy Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey
Address for Correspondence:
Yusuf Arikan, Department of Urology, Bakirkoy Dr. Sadi Konuk Training and Research Hospital, Istanbul, Turkey
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|Author:||Yenice, Mustafa Gurkan; Arikan, Yusuf; Seker, Kamil Gokhan; Simsek, Abdulmuttalip; Tugcu, Volkan|
|Publication:||Journal of Emergency Medicine Case Reports|
|Article Type:||Case study|
|Date:||Jul 1, 2018|
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