Retrograde intra renal surgery (RIRS): the most minimally invasive stone surgery, its safety and efficacy in patient with sickle cell anemia. A case report and review of literature for the optimal peri-operative management in sickle cell patients | Jineshkumar Jain | Uro-Technology Journal

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Retrograde intra renal surgery (RIRS): the most minimally invasive stone surgery, its safety and efficacy in patient with sickle cell anemia. A case report and review of literature for the optimal peri-operative management in sickle cell patients


Ravi Jineshkumar Jaina,*, Dhameliya Jatina, Brahmbhatt Hardika

a Department of Urology and Renal Transplantation, GCS Medical College and Research Centre, Asarwa, Ahmedabad, India.

* Corresponding author: Ravi Jineshkumar Jain
Mailing address: Department of Urology and Renal Transplantation, GCS Medical College and Research Centre, Asarwa, Ahmedabad, India.
Email: imshahiduro@gmail.com

This article belongs to the Special Issue: Nightmare and complex cases in Urology

Received: 14 March 2024 / Revised: 07 April 2024 / Accepted: 16 April 2024 / Published: 27 June 2024

DOI: 10.31491/UTJ.2024.06.021

Abstract

Sickle cell anemia (SCA) is a genetic hematologic disorder characterized by repeated hemolytic and vasoocclusive episodes. Surgical procedures in such patients carry the risk of bleeding and coagulation problems. Kidney stone is a common health problem in India. Optimal management depends on various stone-related factors (stone burden, location, hardness, degree of hydronephrosis) and patient-related factors. Kidney stone surgery in patients with bleeding disorders can be challenging. Extracorporeal shock wave lithotripsy and percutaneous nephrolithotomy are minimally invasive procedures. However, they carry a risk of bleeding and are relatively contraindicated in patients with bleeding disorders. Retrograde intra renal surgery (RIRS) is the most minimally invasive modality for upper tract calculi due to the lowest risk of bleeding. Since there is no puncture of the kidney, it is relatively safe in patients with bleeding disorders, cardiac patients on antiplatelet therapy, recurrent stone formers, solitary kidneys, and stones in anatomically abnormal kidneys. Our patient presented with a 13 × 12 mm upper ureteral calculus with hydronephrosis. He was diagnosed with SCA during pre-operative work up. We achieved complete stone clearance with RIRS. No postoperative complications such as bleeding, urosepsis, sickling crisis, renal infarction, etc. were observed. The patient was discharged within 48 hours and is doing well. To date, there is no reported case of RIRS for renal stone management in patients with SCA. We aim to report this case and review the literature for the ideal perioperative management of SCA patients.

Keywords

Sickle cell disease, sickle cell anemia, retrograde intra renal surgery, kidney stone, percutaneous lithotomy, extra corporeal shock wave lithotripsy


Introduction

Sickle cell disease (SCD) is the most common genetically inherited hematologic disorder. Sickle cell anemia (SCA) represents the most severe form of SCD due to its renal manifestations. It is characterized by the mutant sickle β-globin resulting from the replacement of valine for glutamic acid at the sixth amino acid position. Sickle cell hemoglobin (HbS) polymerizes when the concentration of its deoxygenated form (deoxyHbS) is exceeded, leading to vaso-occlusive crisis and repeated hemolytic episodes [1]. Sickling of red blood cells (RBCs) can lead to clumping and early destruction of RBCs. Sickle cell nephropathy can cause myriad of complications such as hematuria, proteinuria, renal papillary necrosis, renal tubular disorder, acute and chronic renal injury, sickle cell glomerulopathy, renal medullary carcinoma, etc. [2, 3].
Kidney stones are a common urological problem worldwide, especially in India. Various modalities are available for optimal management of upper tract calculi such as extra corporeal shock wave lithotripsy (ESWL), percutaneous nephrolithotomy (PCNL), mini PCNL (MPCNL) and retrograde intra renal surgery (RIRS). The kidneys receive almost 25% of cardiac output (1.1 L/min). Therefore, any puncture of the kidney may carry the risk of bleeding requiring major blood transfusion (0-20%, mean 7%) [4]. Unlike PCNL and ESWL, RIRS is a completely endoscopic procedure that does not require an incision in the body or a puncture of the kidney. During the procedure, a flexible ureteroscope is passed directly from the urethra to the pelvicalyceal system (PCS) in the kidney. Following this, the stone in the kidney is fragmented or dusted with the help of laser. A double J stent (DJ stent) is deployed at the end of procedure which is removed after 2-4 weeks. The available literature shows that RIRS has the lowest risk of bleeding compared to MPCNL [5-8]. Bleeding, dehydration, hypoxia, etc. can trigger sickling crisis and must be avoided in SCA patients [9-11]. RIRS is considered the safest modality for patients with bleeding disorders, patients on antiplatelet therapy, solitary kidney, anatomically abnormal kidney, and recurrent stone formers [5-7]. Most complications of RIRS are of lower Clavien grade and major complications are rare [12]. To date, RIRS for stone management in SCA patients has not been reported in the literature.

Case report

A 45-year-old man presented with 2 months of right flank pain, hematuria, and dysuria. On examination, he was found to have a 15 × 13 mm impacted hard upper ureteral stone (Hounsfield value 1400 HU) just distal to the pelviureteric junction (PUJ). His blood investigations revealed anemia with a hemoglobin (Hb) of 7 g/dL. Rest investigations were normal. Urine culture was sterile. A hematologist's opinion was obtained and he was diagnosed with SCA based on hemoglobin electrophoresis (Figure 1). Under the expert guidance of the hematologist, the patient was transfused with 1 unit of packed cell volume (PCV) and the patient was pre-stented. Two weeks later, his preoperative Hb was 9 g/dL and he was scheduled for RIRS. During RIRS, it was extremely difficult to reach the upper ureteral stone despite pre-stenting. A semi-rigid ureteroscope (6.5/8 Fr) followed by a disposable digital ureteroscope (7.5 Fr) was passed to the level of the upper ureteral stone using two gliding wires (Figure 2A). A thulium fiber laser (IPGTM 35 watt) was used. The upper ureteral stone was first fragmented using laser settings of 0.8-1.0 joules and a frequency of 10-15 hertz. The stone was fragmented from the center to the periphery, safeguarding the ureteral mucosa. Gentle hand-held irrigation with a 100 cm extension tube was used. Once the stone was dis-impacted, it was pushed into the PCS. The ureteral access sheath (10/12 Fr, 35 cm) was then deployed to the upper ureter. A limited-use digital disposable ureteroscope (SeeshenTM) was used for RIRS. The stone was completely dusted into fine golden dust (Figure 2B). Intra renal laser settings were 1.0-1.2 joules and 30-35 hertz for dusting. Finally, popcorn settings of 0.05-0.1 joules and 200 hertz were used. Complete on-table stone clearance was observed. Post-procedure contrast study in the form of retrograde pyelography was normal. A DJ stent (5 Fr/26 cm) was routinely placed. Total ureteroscopy time was 40 minutes. No complications in the form of sepsis or bleeding were noted. The stent was removed after 2 weeks.


Figure 1. Hemoglobin Electrophoresis showing positive sickling test.

Figure 2. (A) Semi-rigid ureteroscope negotiated up to the level of the upper ureteral stone with difficulty with double gliding wire. (B) Complete stone clearance with RIRS.

Discussion

Normal adult Hb, hemoglobin A (HbA), is composed of two α and two β globin chains (αβ) located on chromosomes 16 and 11. HbS results from the substitution of valine for glutamic acid at position 6 of the β globin chain [1]. The resulting HbS polymerizes in response to stress, dehydration, hypothermia, hypovolemia, acidosis, etc. and causes sickling of RBC and early destruction. SCD is characterized by recurrent vaso-occlusion [2, 13].
Surgery in SCA patients can be challenging due to the high risk of complications. SCA patients are at high risk for perioperative mortality, acute chest syndrome, congestive heart failure, sepsis, etc. [9]. Surgical management of SCA patients requires multidisciplinary team management involving urologist, hematologist, pathologist and nursing staff. Preoperative anemia is crucial for any surgery. There are various schools of thought regarding preoperative blood transfusion in SCA patients undergoing surgery. The Cooperative Study of SCD conducted the largest cohort study of surgery in SCD patients. They concluded a beneficial effect of preoperative transfusion in Hb SC patients for all surgical procedures [9, 10]. However, few studies refute the role of preoperative transfusion. It is important to avoid the triggering factors of sickle cell crisis such as dehydration, hypoxia, hypovolemia, hypothermia, stress, infection, vascular stasis and increased blood viscosity [9-11].
Renal stone disease is a common urological problem worldwide. Mini PCNL and RIRS are currently the mainstay of management of upper tract calculi. According to the European Association of Urology (EAU) guidelines, RIRS is the first-line modality for non-lower pole renal stones up to 20 mm [12]. RIRS scores over MPCNL in terms of safety due to a lower risk of bleeding, pain and hospital stay. The risk of bleeding requiring blood transfusion after PCNL can be up to 20% (mean 7%), while it is negligible with RIRS [4-8, 14]. RIRS is equally effective for stone clearance of 1.5-2 cm upper tract calculi. Newer lasers such as the thulium fiber laser (TFL) are proving to be a game changer for RIRS. With the TFL laser, there has been a significant improvement in stone clearance, decreased operative time, and larger stone loads can be successfully treated with RIRS [15]. Therefore, RIRS is the modality of choice in high-risk patients, such as those with bleeding disorders, with excellent outcomes and minimal morbidity.

Conclusions

RIRS is a safe, effective, and minimally invasive modality for upper tract calculi management. It is the procedure of choice in patients with hematological disorders such as SCA. Appropriate perioperative management of these patients is required to prevent major complications.

Declarations

Financial support and sponsorship

None.

Conflict of interest statement

No conflict of interest.

Ethical approval and informed consent

The patient has provided an informed consent for publication of images and information in this study.

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